./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/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_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/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_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/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 b02d53de4cc8dbaebc187e8fa236234211af4eca5416c7869304d04f0d61a0bd --- 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 02:27:10,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:27:10,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:27:10,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:27:10,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:27:10,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:27:10,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:27:10,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:27:10,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:27:10,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:27:10,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:27:10,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:27:10,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:27:10,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:27:10,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:27:10,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:27:10,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:27:10,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:27:10,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:27:10,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:27:10,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:27:10,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:27:10,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:27:10,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:27:10,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:27:10,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:27:10,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:27:10,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:27:10,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:27:10,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:27:10,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:27:10,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:27:10,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:27:10,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:27:10,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:27:10,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:27:10,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:27:10,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:27:10,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:27:10,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:27:10,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:27:10,618 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:27:10,661 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:27:10,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:27:10,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:27:10,663 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:27:10,664 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:27:10,664 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:27:10,664 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:27:10,665 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:27:10,665 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:27:10,665 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:27:10,666 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:27:10,667 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:27:10,667 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:27:10,667 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:27:10,667 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:27:10,667 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:27:10,668 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:27:10,668 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:27:10,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:27:10,669 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:27:10,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:27:10,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:27:10,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:27:10,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:27:10,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:27:10,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:27:10,671 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:27:10,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:27:10,671 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:27:10,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:27:10,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:27:10,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:27:10,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:27:10,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:27:10,673 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:27:10,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:27:10,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:27:10,673 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:27:10,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:27:10,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:27:10,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:27:10,676 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_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b02d53de4cc8dbaebc187e8fa236234211af4eca5416c7869304d04f0d61a0bd [2022-11-22 02:27:10,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:27:11,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:27:11,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:27:11,023 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:27:11,026 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:27:11,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c [2022-11-22 02:27:14,110 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:27:14,569 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:27:14,570 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c [2022-11-22 02:27:14,598 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/data/9161aa98f/b74a423c753c4d729239158d2a6dda13/FLAG6348e2bc3 [2022-11-22 02:27:14,614 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/data/9161aa98f/b74a423c753c4d729239158d2a6dda13 [2022-11-22 02:27:14,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:27:14,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:27:14,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:27:14,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:27:14,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:27:14,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:27:14" (1/1) ... [2022-11-22 02:27:14,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d84f3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:14, skipping insertion in model container [2022-11-22 02:27:14,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:27:14" (1/1) ... [2022-11-22 02:27:14,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:27:14,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:27:15,190 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_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c[40071,40084] [2022-11-22 02:27:15,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:27:15,310 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:27:15,382 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_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c[40071,40084] [2022-11-22 02:27:15,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:27:15,450 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:27:15,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:15 WrapperNode [2022-11-22 02:27:15,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:27:15,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:27:15,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:27:15,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:27:15,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:15" (1/1) ... [2022-11-22 02:27:15,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:15" (1/1) ... [2022-11-22 02:27:15,550 INFO L138 Inliner]: procedures = 92, calls = 339, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 861 [2022-11-22 02:27:15,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:27:15,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:27:15,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:27:15,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:27:15,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:15" (1/1) ... [2022-11-22 02:27:15,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:15" (1/1) ... [2022-11-22 02:27:15,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:15" (1/1) ... [2022-11-22 02:27:15,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:15" (1/1) ... [2022-11-22 02:27:15,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:15" (1/1) ... [2022-11-22 02:27:15,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:15" (1/1) ... [2022-11-22 02:27:15,668 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:15" (1/1) ... [2022-11-22 02:27:15,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:15" (1/1) ... [2022-11-22 02:27:15,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:27:15,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:27:15,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:27:15,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:27:15,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:15" (1/1) ... [2022-11-22 02:27:15,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:27:15,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:27:15,739 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:27:15,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:27:15,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:27:15,808 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-22 02:27:15,808 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-22 02:27:15,808 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-22 02:27:15,809 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-22 02:27:15,809 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-22 02:27:15,809 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-22 02:27:15,809 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-22 02:27:15,809 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-22 02:27:15,809 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-22 02:27:15,809 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-22 02:27:15,810 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-22 02:27:15,810 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-22 02:27:15,810 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-22 02:27:15,810 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-22 02:27:15,810 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-22 02:27:15,811 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-22 02:27:15,811 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-22 02:27:15,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-22 02:27:15,811 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-22 02:27:15,812 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-22 02:27:15,812 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-22 02:27:15,812 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-22 02:27:15,813 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-22 02:27:15,813 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-22 02:27:15,814 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-22 02:27:15,814 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-22 02:27:15,815 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-22 02:27:15,815 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-22 02:27:15,815 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-22 02:27:15,815 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-22 02:27:15,815 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-22 02:27:15,815 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-22 02:27:15,816 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-22 02:27:15,816 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-22 02:27:15,816 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-22 02:27:15,816 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-22 02:27:15,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:27:15,817 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-22 02:27:15,817 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-22 02:27:15,817 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-22 02:27:15,817 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-22 02:27:15,818 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-22 02:27:15,818 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-22 02:27:15,818 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-22 02:27:15,818 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-22 02:27:15,819 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-11-22 02:27:15,820 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-11-22 02:27:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:27:15,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:27:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-22 02:27:15,821 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-22 02:27:16,035 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:27:16,037 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:27:17,489 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:27:18,323 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:27:18,323 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:27:18,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:27:18 BoogieIcfgContainer [2022-11-22 02:27:18,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:27:18,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:27:18,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:27:18,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:27:18,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:27:14" (1/3) ... [2022-11-22 02:27:18,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231fb45d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:27:18, skipping insertion in model container [2022-11-22 02:27:18,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:15" (2/3) ... [2022-11-22 02:27:18,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231fb45d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:27:18, skipping insertion in model container [2022-11-22 02:27:18,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:27:18" (3/3) ... [2022-11-22 02:27:18,345 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product21.cil.c [2022-11-22 02:27:18,367 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:27:18,367 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:27:18,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:27:18,460 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;@6e65c8b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:27:18,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:27:18,468 INFO L276 IsEmpty]: Start isEmpty. Operand has 374 states, 253 states have (on average 1.5968379446640317) internal successors, (404), 274 states have internal predecessors, (404), 95 states have call successors, (95), 24 states have call predecessors, (95), 24 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-22 02:27:18,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-22 02:27:18,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:18,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:18,509 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:27:18,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:18,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1083051689, now seen corresponding path program 1 times [2022-11-22 02:27:18,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:18,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403266108] [2022-11-22 02:27:18,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:18,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:19,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:27:19,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:19,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403266108] [2022-11-22 02:27:19,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403266108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:19,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:27:19,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:27:19,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440547051] [2022-11-22 02:27:19,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:19,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:27:19,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:19,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:27:19,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:27:19,590 INFO L87 Difference]: Start difference. First operand has 374 states, 253 states have (on average 1.5968379446640317) internal successors, (404), 274 states have internal predecessors, (404), 95 states have call successors, (95), 24 states have call predecessors, (95), 24 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 02:27:20,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:20,230 INFO L93 Difference]: Finished difference Result 844 states and 1368 transitions. [2022-11-22 02:27:20,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:27:20,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 65 [2022-11-22 02:27:20,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:20,257 INFO L225 Difference]: With dead ends: 844 [2022-11-22 02:27:20,257 INFO L226 Difference]: Without dead ends: 483 [2022-11-22 02:27:20,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:27:20,272 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 282 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:20,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 2322 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:27:20,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-22 02:27:20,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 373. [2022-11-22 02:27:20,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 254 states have (on average 1.578740157480315) internal successors, (401), 273 states have internal predecessors, (401), 95 states have call successors, (95), 24 states have call predecessors, (95), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2022-11-22 02:27:20,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 586 transitions. [2022-11-22 02:27:20,363 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 586 transitions. Word has length 65 [2022-11-22 02:27:20,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:20,366 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 586 transitions. [2022-11-22 02:27:20,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 02:27:20,367 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 586 transitions. [2022-11-22 02:27:20,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-22 02:27:20,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:20,376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:27:20,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:27:20,377 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:27:20,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:20,378 INFO L85 PathProgramCache]: Analyzing trace with hash 178267563, now seen corresponding path program 1 times [2022-11-22 02:27:20,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:20,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584513911] [2022-11-22 02:27:20,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:20,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:20,997 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 02:27:20,997 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:20,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584513911] [2022-11-22 02:27:20,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584513911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:20,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:27:20,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-22 02:27:20,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148248563] [2022-11-22 02:27:20,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:21,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 02:27:21,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:21,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 02:27:21,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:27:21,002 INFO L87 Difference]: Start difference. First operand 373 states and 586 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 6 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-22 02:27:24,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:24,703 INFO L93 Difference]: Finished difference Result 1280 states and 2045 transitions. [2022-11-22 02:27:24,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-22 02:27:24,704 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 6 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 68 [2022-11-22 02:27:24,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:24,716 INFO L225 Difference]: With dead ends: 1280 [2022-11-22 02:27:24,716 INFO L226 Difference]: Without dead ends: 923 [2022-11-22 02:27:24,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:27:24,728 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 1733 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 3924 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1799 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 4508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 3924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:24,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1799 Valid, 2525 Invalid, 4508 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [584 Valid, 3924 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-22 02:27:24,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2022-11-22 02:27:24,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 867. [2022-11-22 02:27:24,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 611 states have (on average 1.5973813420621932) internal successors, (976), 642 states have internal predecessors, (976), 203 states have call successors, (203), 48 states have call predecessors, (203), 52 states have return successors, (210), 201 states have call predecessors, (210), 198 states have call successors, (210) [2022-11-22 02:27:24,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1389 transitions. [2022-11-22 02:27:24,873 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1389 transitions. Word has length 68 [2022-11-22 02:27:24,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:24,874 INFO L495 AbstractCegarLoop]: Abstraction has 867 states and 1389 transitions. [2022-11-22 02:27:24,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 6 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-22 02:27:24,875 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1389 transitions. [2022-11-22 02:27:24,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-22 02:27:24,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:24,879 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, 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 02:27:24,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:27:24,879 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:27:24,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:24,880 INFO L85 PathProgramCache]: Analyzing trace with hash 314891806, now seen corresponding path program 1 times [2022-11-22 02:27:24,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:24,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181917821] [2022-11-22 02:27:24,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:24,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:26,157 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 02:27:26,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:26,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181917821] [2022-11-22 02:27:26,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181917821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:26,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:27:26,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:27:26,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649158487] [2022-11-22 02:27:26,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:26,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:27:26,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:26,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:27:26,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:27:26,161 INFO L87 Difference]: Start difference. First operand 867 states and 1389 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 6 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-22 02:27:30,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:30,592 INFO L93 Difference]: Finished difference Result 3556 states and 5794 transitions. [2022-11-22 02:27:30,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 02:27:30,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 6 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 73 [2022-11-22 02:27:30,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:30,619 INFO L225 Difference]: With dead ends: 3556 [2022-11-22 02:27:30,620 INFO L226 Difference]: Without dead ends: 2706 [2022-11-22 02:27:30,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:27:30,637 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 2165 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 3185 mSolverCounterSat, 928 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2237 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 4113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 928 IncrementalHoareTripleChecker+Valid, 3185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:30,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2237 Valid, 1674 Invalid, 4113 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [928 Valid, 3185 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-22 02:27:30,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2022-11-22 02:27:30,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 2502. [2022-11-22 02:27:30,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 1794 states have (on average 1.596432552954292) internal successors, (2864), 1885 states have internal predecessors, (2864), 563 states have call successors, (563), 128 states have call predecessors, (563), 144 states have return successors, (614), 549 states have call predecessors, (614), 558 states have call successors, (614) [2022-11-22 02:27:30,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 4041 transitions. [2022-11-22 02:27:30,963 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 4041 transitions. Word has length 73 [2022-11-22 02:27:30,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:30,963 INFO L495 AbstractCegarLoop]: Abstraction has 2502 states and 4041 transitions. [2022-11-22 02:27:30,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 6 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-22 02:27:30,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 4041 transitions. [2022-11-22 02:27:30,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-22 02:27:30,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:30,968 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, 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 02:27:30,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:27:30,968 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:27:30,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:30,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1649083650, now seen corresponding path program 1 times [2022-11-22 02:27:30,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:30,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458129169] [2022-11-22 02:27:30,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:30,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:31,311 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 02:27:31,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:31,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458129169] [2022-11-22 02:27:31,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458129169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:31,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:27:31,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:27:31,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30557094] [2022-11-22 02:27:31,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:31,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:27:31,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:31,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:27:31,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:27:31,316 INFO L87 Difference]: Start difference. First operand 2502 states and 4041 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-22 02:27:31,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:31,753 INFO L93 Difference]: Finished difference Result 4303 states and 6959 transitions. [2022-11-22 02:27:31,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:27:31,753 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 72 [2022-11-22 02:27:31,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:31,782 INFO L225 Difference]: With dead ends: 4303 [2022-11-22 02:27:31,783 INFO L226 Difference]: Without dead ends: 2769 [2022-11-22 02:27:31,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 02:27:31,796 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 41 mSDsluCounter, 2905 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3503 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:31,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 3503 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:27:31,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2022-11-22 02:27:32,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 2575. [2022-11-22 02:27:32,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2575 states, 1845 states have (on average 1.5799457994579946) internal successors, (2915), 1938 states have internal predecessors, (2915), 563 states have call successors, (563), 128 states have call predecessors, (563), 166 states have return successors, (661), 569 states have call predecessors, (661), 558 states have call successors, (661) [2022-11-22 02:27:32,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 4139 transitions. [2022-11-22 02:27:32,112 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 4139 transitions. Word has length 72 [2022-11-22 02:27:32,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:32,120 INFO L495 AbstractCegarLoop]: Abstraction has 2575 states and 4139 transitions. [2022-11-22 02:27:32,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-22 02:27:32,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 4139 transitions. [2022-11-22 02:27:32,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-22 02:27:32,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:32,125 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, 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 02:27:32,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:27:32,125 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:27:32,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:32,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1857049602, now seen corresponding path program 1 times [2022-11-22 02:27:32,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:32,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723156828] [2022-11-22 02:27:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:32,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:32,464 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 02:27:32,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:32,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723156828] [2022-11-22 02:27:32,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723156828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:32,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:27:32,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:27:32,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379613517] [2022-11-22 02:27:32,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:32,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:27:32,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:32,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:27:32,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:27:32,467 INFO L87 Difference]: Start difference. First operand 2575 states and 4139 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-22 02:27:32,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:32,923 INFO L93 Difference]: Finished difference Result 4401 states and 7082 transitions. [2022-11-22 02:27:32,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:27:32,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 73 [2022-11-22 02:27:32,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:32,949 INFO L225 Difference]: With dead ends: 4401 [2022-11-22 02:27:32,949 INFO L226 Difference]: Without dead ends: 2820 [2022-11-22 02:27:32,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 02:27:32,960 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 42 mSDsluCounter, 2886 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 3479 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:32,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 3479 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:27:32,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2820 states. [2022-11-22 02:27:33,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2820 to 2586. [2022-11-22 02:27:33,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2586 states, 1856 states have (on average 1.5765086206896552) internal successors, (2926), 1938 states have internal predecessors, (2926), 563 states have call successors, (563), 128 states have call predecessors, (563), 166 states have return successors, (661), 580 states have call predecessors, (661), 558 states have call successors, (661) [2022-11-22 02:27:33,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 4150 transitions. [2022-11-22 02:27:33,266 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 4150 transitions. Word has length 73 [2022-11-22 02:27:33,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:33,267 INFO L495 AbstractCegarLoop]: Abstraction has 2586 states and 4150 transitions. [2022-11-22 02:27:33,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-22 02:27:33,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 4150 transitions. [2022-11-22 02:27:33,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-22 02:27:33,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:33,272 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, 1, 1, 1, 1, 1, 1, 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 02:27:33,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:27:33,272 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:27:33,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:33,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1744562315, now seen corresponding path program 1 times [2022-11-22 02:27:33,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:33,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022424793] [2022-11-22 02:27:33,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:33,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:33,580 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 02:27:33,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:33,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022424793] [2022-11-22 02:27:33,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022424793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:33,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:27:33,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 02:27:33,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535361552] [2022-11-22 02:27:33,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:33,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:27:33,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:33,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:27:33,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:27:33,583 INFO L87 Difference]: Start difference. First operand 2586 states and 4150 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 8 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-22 02:27:36,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:36,564 INFO L93 Difference]: Finished difference Result 5886 states and 9503 transitions. [2022-11-22 02:27:36,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:27:36,565 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 8 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 80 [2022-11-22 02:27:36,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:36,591 INFO L225 Difference]: With dead ends: 5886 [2022-11-22 02:27:36,591 INFO L226 Difference]: Without dead ends: 3938 [2022-11-22 02:27:36,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:27:36,605 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 2927 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 2213 mSolverCounterSat, 1310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3091 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 3523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1310 IncrementalHoareTripleChecker+Valid, 2213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:36,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3091 Valid, 1194 Invalid, 3523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1310 Valid, 2213 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-22 02:27:36,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2022-11-22 02:27:37,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 3762. [2022-11-22 02:27:37,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3762 states, 2652 states have (on average 1.5346907993966818) internal successors, (4070), 2783 states have internal predecessors, (4070), 847 states have call successors, (847), 210 states have call predecessors, (847), 262 states have return successors, (1015), 859 states have call predecessors, (1015), 842 states have call successors, (1015) [2022-11-22 02:27:37,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3762 states to 3762 states and 5932 transitions. [2022-11-22 02:27:37,070 INFO L78 Accepts]: Start accepts. Automaton has 3762 states and 5932 transitions. Word has length 80 [2022-11-22 02:27:37,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:37,071 INFO L495 AbstractCegarLoop]: Abstraction has 3762 states and 5932 transitions. [2022-11-22 02:27:37,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 8 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-22 02:27:37,071 INFO L276 IsEmpty]: Start isEmpty. Operand 3762 states and 5932 transitions. [2022-11-22 02:27:37,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-22 02:27:37,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:37,076 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, 1, 1, 1, 1, 1, 1, 1, 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 02:27:37,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:27:37,077 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:27:37,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:37,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1823694632, now seen corresponding path program 1 times [2022-11-22 02:27:37,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:37,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983536499] [2022-11-22 02:27:37,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:37,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:37,361 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 02:27:37,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:37,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983536499] [2022-11-22 02:27:37,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983536499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:37,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:27:37,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:27:37,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680142505] [2022-11-22 02:27:37,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:37,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:27:37,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:37,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:27:37,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:27:37,365 INFO L87 Difference]: Start difference. First operand 3762 states and 5932 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-22 02:27:40,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:40,062 INFO L93 Difference]: Finished difference Result 7165 states and 11361 transitions. [2022-11-22 02:27:40,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:27:40,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 81 [2022-11-22 02:27:40,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:40,098 INFO L225 Difference]: With dead ends: 7165 [2022-11-22 02:27:40,098 INFO L226 Difference]: Without dead ends: 4268 [2022-11-22 02:27:40,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:27:40,115 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 991 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1067 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 2860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:40,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1067 Valid, 1610 Invalid, 2860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-22 02:27:40,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4268 states. [2022-11-22 02:27:40,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4268 to 3843. [2022-11-22 02:27:40,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3843 states, 2706 states have (on average 1.5284552845528456) internal successors, (4136), 2849 states have internal predecessors, (4136), 850 states have call successors, (850), 225 states have call predecessors, (850), 286 states have return successors, (1049), 859 states have call predecessors, (1049), 845 states have call successors, (1049) [2022-11-22 02:27:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3843 states to 3843 states and 6035 transitions. [2022-11-22 02:27:40,674 INFO L78 Accepts]: Start accepts. Automaton has 3843 states and 6035 transitions. Word has length 81 [2022-11-22 02:27:40,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:40,675 INFO L495 AbstractCegarLoop]: Abstraction has 3843 states and 6035 transitions. [2022-11-22 02:27:40,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-22 02:27:40,676 INFO L276 IsEmpty]: Start isEmpty. Operand 3843 states and 6035 transitions. [2022-11-22 02:27:40,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-22 02:27:40,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:40,682 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:27:40,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:27:40,682 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:27:40,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:40,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1646512634, now seen corresponding path program 1 times [2022-11-22 02:27:40,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:40,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964751928] [2022-11-22 02:27:40,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:40,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:40,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 02:27:40,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:40,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964751928] [2022-11-22 02:27:40,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964751928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:40,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:27:40,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:27:40,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932236148] [2022-11-22 02:27:40,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:40,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:27:40,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:40,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:27:40,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:27:40,963 INFO L87 Difference]: Start difference. First operand 3843 states and 6035 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-22 02:27:41,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:41,849 INFO L93 Difference]: Finished difference Result 3947 states and 6197 transitions. [2022-11-22 02:27:41,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:27:41,850 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 86 [2022-11-22 02:27:41,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:41,875 INFO L225 Difference]: With dead ends: 3947 [2022-11-22 02:27:41,876 INFO L226 Difference]: Without dead ends: 3932 [2022-11-22 02:27:41,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:27:41,879 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 677 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:41,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1450 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:27:41,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3932 states. [2022-11-22 02:27:42,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3932 to 3849. [2022-11-22 02:27:42,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3849 states, 2712 states have (on average 1.5272861356932153) internal successors, (4142), 2855 states have internal predecessors, (4142), 850 states have call successors, (850), 225 states have call predecessors, (850), 286 states have return successors, (1049), 859 states have call predecessors, (1049), 845 states have call successors, (1049) [2022-11-22 02:27:42,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 6041 transitions. [2022-11-22 02:27:42,342 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 6041 transitions. Word has length 86 [2022-11-22 02:27:42,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:42,343 INFO L495 AbstractCegarLoop]: Abstraction has 3849 states and 6041 transitions. [2022-11-22 02:27:42,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-22 02:27:42,343 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 6041 transitions. [2022-11-22 02:27:42,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-22 02:27:42,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:42,346 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:27:42,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:27:42,347 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:27:42,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:42,347 INFO L85 PathProgramCache]: Analyzing trace with hash -362638526, now seen corresponding path program 1 times [2022-11-22 02:27:42,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:42,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150737947] [2022-11-22 02:27:42,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:42,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:42,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 02:27:42,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:42,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150737947] [2022-11-22 02:27:42,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150737947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:42,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:27:42,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:27:42,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155270178] [2022-11-22 02:27:42,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:42,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:27:42,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:42,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:27:42,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:27:42,668 INFO L87 Difference]: Start difference. First operand 3849 states and 6041 transitions. Second operand has 6 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-22 02:27:43,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:43,217 INFO L93 Difference]: Finished difference Result 3870 states and 6068 transitions. [2022-11-22 02:27:43,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:27:43,218 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) Word has length 90 [2022-11-22 02:27:43,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:43,316 INFO L225 Difference]: With dead ends: 3870 [2022-11-22 02:27:43,317 INFO L226 Difference]: Without dead ends: 3855 [2022-11-22 02:27:43,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:27:43,320 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 41 mSDsluCounter, 2146 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:43,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 2695 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:27:43,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2022-11-22 02:27:43,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 3849. [2022-11-22 02:27:43,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3849 states, 2712 states have (on average 1.5243362831858407) internal successors, (4134), 2855 states have internal predecessors, (4134), 850 states have call successors, (850), 225 states have call predecessors, (850), 286 states have return successors, (1049), 859 states have call predecessors, (1049), 845 states have call successors, (1049) [2022-11-22 02:27:43,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 6033 transitions. [2022-11-22 02:27:43,940 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 6033 transitions. Word has length 90 [2022-11-22 02:27:43,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:43,941 INFO L495 AbstractCegarLoop]: Abstraction has 3849 states and 6033 transitions. [2022-11-22 02:27:43,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-22 02:27:43,941 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 6033 transitions. [2022-11-22 02:27:43,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-22 02:27:43,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:43,945 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:27:43,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:27:43,946 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:27:43,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:43,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1646809079, now seen corresponding path program 1 times [2022-11-22 02:27:43,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:43,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025344010] [2022-11-22 02:27:43,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:43,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:44,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:27:44,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:44,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025344010] [2022-11-22 02:27:44,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025344010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:44,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:27:44,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:27:44,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870474471] [2022-11-22 02:27:44,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:44,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:27:44,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:44,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:27:44,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:27:44,167 INFO L87 Difference]: Start difference. First operand 3849 states and 6033 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 02:27:46,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:46,586 INFO L93 Difference]: Finished difference Result 10848 states and 17263 transitions. [2022-11-22 02:27:46,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:27:46,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 97 [2022-11-22 02:27:46,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:46,635 INFO L225 Difference]: With dead ends: 10848 [2022-11-22 02:27:46,635 INFO L226 Difference]: Without dead ends: 7018 [2022-11-22 02:27:46,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:27:46,656 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 1163 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:46,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1234 Valid, 709 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-22 02:27:46,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7018 states. [2022-11-22 02:27:47,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7018 to 6568. [2022-11-22 02:27:47,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6568 states, 4666 states have (on average 1.5327903986283755) internal successors, (7152), 4912 states have internal predecessors, (7152), 1417 states have call successors, (1417), 363 states have call predecessors, (1417), 484 states have return successors, (1831), 1414 states have call predecessors, (1831), 1412 states have call successors, (1831) [2022-11-22 02:27:47,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6568 states to 6568 states and 10400 transitions. [2022-11-22 02:27:47,525 INFO L78 Accepts]: Start accepts. Automaton has 6568 states and 10400 transitions. Word has length 97 [2022-11-22 02:27:47,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:47,526 INFO L495 AbstractCegarLoop]: Abstraction has 6568 states and 10400 transitions. [2022-11-22 02:27:47,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 02:27:47,526 INFO L276 IsEmpty]: Start isEmpty. Operand 6568 states and 10400 transitions. [2022-11-22 02:27:47,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-22 02:27:47,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:47,530 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:47,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:27:47,531 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:27:47,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:47,531 INFO L85 PathProgramCache]: Analyzing trace with hash -488662682, now seen corresponding path program 1 times [2022-11-22 02:27:47,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:47,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121725495] [2022-11-22 02:27:47,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:47,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:49,002 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 02:27:49,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:49,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121725495] [2022-11-22 02:27:49,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121725495] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:27:49,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290378079] [2022-11-22 02:27:49,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:49,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:27:49,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:27:49,010 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:27:49,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:27:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:49,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 1469 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 02:27:49,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:27:50,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:27:50,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:27:50,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290378079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:50,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:27:50,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 21 [2022-11-22 02:27:50,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118456409] [2022-11-22 02:27:50,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:50,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:27:50,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:50,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:27:50,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2022-11-22 02:27:50,453 INFO L87 Difference]: Start difference. First operand 6568 states and 10400 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-22 02:27:54,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:54,036 INFO L93 Difference]: Finished difference Result 14380 states and 22728 transitions. [2022-11-22 02:27:54,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:27:54,037 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 98 [2022-11-22 02:27:54,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:54,080 INFO L225 Difference]: With dead ends: 14380 [2022-11-22 02:27:54,080 INFO L226 Difference]: Without dead ends: 7828 [2022-11-22 02:27:54,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2022-11-22 02:27:54,109 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 837 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 2358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:54,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 1686 Invalid, 2358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-22 02:27:54,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7828 states. [2022-11-22 02:27:54,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7828 to 7778. [2022-11-22 02:27:54,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7778 states, 5532 states have (on average 1.5258496023138106) internal successors, (8441), 5806 states have internal predecessors, (8441), 1673 states have call successors, (1673), 436 states have call predecessors, (1673), 572 states have return successors, (2143), 1658 states have call predecessors, (2143), 1668 states have call successors, (2143) [2022-11-22 02:27:55,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7778 states to 7778 states and 12257 transitions. [2022-11-22 02:27:55,104 INFO L78 Accepts]: Start accepts. Automaton has 7778 states and 12257 transitions. Word has length 98 [2022-11-22 02:27:55,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:55,104 INFO L495 AbstractCegarLoop]: Abstraction has 7778 states and 12257 transitions. [2022-11-22 02:27:55,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-22 02:27:55,105 INFO L276 IsEmpty]: Start isEmpty. Operand 7778 states and 12257 transitions. [2022-11-22 02:27:55,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-22 02:27:55,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:55,118 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:27:55,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 02:27:55,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-22 02:27:55,335 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:27:55,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:55,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2013816114, now seen corresponding path program 1 times [2022-11-22 02:27:55,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:55,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247071630] [2022-11-22 02:27:55,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:55,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:56,069 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:27:56,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:56,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247071630] [2022-11-22 02:27:56,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247071630] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:27:56,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86925433] [2022-11-22 02:27:56,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:56,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:27:56,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:27:56,072 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:27:56,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:27:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:56,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 1474 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-22 02:27:56,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:27:58,984 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:27:58,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:28:02,019 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 02:28:02,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86925433] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:28:02,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [766496312] [2022-11-22 02:28:02,052 INFO L159 IcfgInterpreter]: Started Sifa with 95 locations of interest [2022-11-22 02:28:02,053 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:28:02,058 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:28:02,064 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:28:02,065 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:28:08,190 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 588 for LOIs [2022-11-22 02:29:25,549 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 588 for LOIs [2022-11-22 02:29:35,403 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 114 for LOIs [2022-11-22 02:29:35,980 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection__wrappee__weight with input of size 128 for LOIs [2022-11-22 02:29:36,581 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 51 for LOIs [2022-11-22 02:29:36,597 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 87 for LOIs [2022-11-22 02:29:36,616 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 99 for LOIs [2022-11-22 02:29:36,629 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 581 for LOIs [2022-11-22 02:29:40,069 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 585 for LOIs [2022-11-22 02:29:40,662 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 453 for LOIs [2022-11-22 02:29:40,917 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 91 for LOIs [2022-11-22 02:29:41,072 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 87 for LOIs [2022-11-22 02:29:41,084 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 513 for LOIs [2022-11-22 02:29:41,236 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:30:04,064 WARN L233 SmtUtils]: Spent 7.37s 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 02:30:11,794 WARN L233 SmtUtils]: Spent 7.39s 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 02:30:20,932 WARN L233 SmtUtils]: Spent 5.53s 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 02:31:23,557 WARN L233 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 541 DAG size of output: 494 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:31:29,697 WARN L233 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 543 DAG size of output: 476 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:31:35,887 WARN L233 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 546 DAG size of output: 479 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:31:53,165 WARN L233 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 555 DAG size of output: 480 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:32:00,548 WARN L233 SmtUtils]: Spent 6.53s on a formula simplification. DAG size of input: 555 DAG size of output: 496 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:32:07,738 WARN L233 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 558 DAG size of output: 488 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:32:15,288 WARN L233 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 561 DAG size of output: 505 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:32:22,856 WARN L233 SmtUtils]: Spent 6.74s on a formula simplification. DAG size of input: 567 DAG size of output: 511 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:32:30,745 WARN L233 SmtUtils]: Spent 7.01s on a formula simplification. DAG size of input: 583 DAG size of output: 521 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:32:30,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [766496312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:32:30,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:32:30,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [11, 12, 12] total 94 [2022-11-22 02:32:30,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109505784] [2022-11-22 02:32:30,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:32:30,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-11-22 02:32:30,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:32:30,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-11-22 02:32:30,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=696, Invalid=8046, Unknown=0, NotChecked=0, Total=8742 [2022-11-22 02:32:30,753 INFO L87 Difference]: Start difference. First operand 7778 states and 12257 transitions. Second operand has 68 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 44 states have internal predecessors, (64), 17 states have call successors, (17), 13 states have call predecessors, (17), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-22 02:32:37,712 WARN L233 SmtUtils]: Spent 6.21s 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 02:32:44,399 WARN L233 SmtUtils]: Spent 6.33s 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 02:32:51,303 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 608 DAG size of output: 591 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:32:57,176 WARN L233 SmtUtils]: Spent 5.58s on a formula simplification. DAG size of input: 620 DAG size of output: 603 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:33:04,017 WARN L233 SmtUtils]: Spent 6.46s on a formula simplification. DAG size of input: 656 DAG size of output: 620 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:33:10,897 WARN L233 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 652 DAG size of output: 616 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:33:17,411 WARN L233 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 635 DAG size of output: 602 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:33:24,056 WARN L233 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 641 DAG size of output: 608 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:33:30,980 WARN L233 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 653 DAG size of output: 618 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:33:38,088 WARN L233 SmtUtils]: Spent 6.64s on a formula simplification. DAG size of input: 662 DAG size of output: 622 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:33:45,367 WARN L233 SmtUtils]: Spent 6.76s on a formula simplification. DAG size of input: 666 DAG size of output: 626 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:33:52,638 WARN L233 SmtUtils]: Spent 6.79s on a formula simplification. DAG size of input: 668 DAG size of output: 628 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:34:26,734 WARN L233 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 559 DAG size of output: 544 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:34:31,944 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 538 DAG size of output: 529 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:34:37,289 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 541 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:34:51,902 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 543 DAG size of output: 534 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:34:58,106 WARN L233 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 561 DAG size of output: 546 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:35:13,389 WARN L233 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 552 DAG size of output: 539 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:35:19,869 WARN L233 SmtUtils]: Spent 5.94s on a formula simplification. DAG size of input: 570 DAG size of output: 555 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:35:26,287 WARN L233 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 576 DAG size of output: 561 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:35:33,019 WARN L233 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 586 DAG size of output: 571 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:36:25,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:25,513 INFO L93 Difference]: Finished difference Result 16378 states and 25777 transitions. [2022-11-22 02:36:25,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-22 02:36:25,514 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 44 states have internal predecessors, (64), 17 states have call successors, (17), 13 states have call predecessors, (17), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 100 [2022-11-22 02:36:25,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:25,559 INFO L225 Difference]: With dead ends: 16378 [2022-11-22 02:36:25,559 INFO L226 Difference]: Without dead ends: 8600 [2022-11-22 02:36:25,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 214 SyntacticMatches, 6 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5573 ImplicationChecksByTransitivity, 320.5s TimeCoverageRelationStatistics Valid=1093, Invalid=13913, Unknown=0, NotChecked=0, Total=15006 [2022-11-22 02:36:25,592 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 807 mSDsluCounter, 9526 mSDsCounter, 0 mSdLazyCounter, 22500 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 10060 SdHoareTripleChecker+Invalid, 22698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 22500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:25,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 10060 Invalid, 22698 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [198 Valid, 22500 Invalid, 0 Unknown, 0 Unchecked, 82.8s Time] [2022-11-22 02:36:25,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8600 states. [2022-11-22 02:36:26,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8600 to 8365. [2022-11-22 02:36:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8365 states, 5984 states have (on average 1.5182152406417113) internal successors, (9085), 6259 states have internal predecessors, (9085), 1762 states have call successors, (1762), 473 states have call predecessors, (1762), 618 states have return successors, (2259), 1755 states have call predecessors, (2259), 1757 states have call successors, (2259) [2022-11-22 02:36:26,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8365 states to 8365 states and 13106 transitions. [2022-11-22 02:36:26,828 INFO L78 Accepts]: Start accepts. Automaton has 8365 states and 13106 transitions. Word has length 100 [2022-11-22 02:36:26,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:26,829 INFO L495 AbstractCegarLoop]: Abstraction has 8365 states and 13106 transitions. [2022-11-22 02:36:26,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 44 states have internal predecessors, (64), 17 states have call successors, (17), 13 states have call predecessors, (17), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-22 02:36:26,830 INFO L276 IsEmpty]: Start isEmpty. Operand 8365 states and 13106 transitions. [2022-11-22 02:36:26,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-22 02:36:26,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:26,833 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:36:26,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-22 02:36:27,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-22 02:36:27,041 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:36:27,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:27,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1533472626, now seen corresponding path program 1 times [2022-11-22 02:36:27,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:27,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947947528] [2022-11-22 02:36:27,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:27,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:27,288 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 02:36:27,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:27,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947947528] [2022-11-22 02:36:27,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947947528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:36:27,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:36:27,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:36:27,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76957013] [2022-11-22 02:36:27,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:36:27,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:36:27,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:27,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:36:27,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:36:27,291 INFO L87 Difference]: Start difference. First operand 8365 states and 13106 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 02:36:29,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:29,076 INFO L93 Difference]: Finished difference Result 15249 states and 24123 transitions. [2022-11-22 02:36:29,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:36:29,077 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) Word has length 109 [2022-11-22 02:36:29,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:29,125 INFO L225 Difference]: With dead ends: 15249 [2022-11-22 02:36:29,126 INFO L226 Difference]: Without dead ends: 9242 [2022-11-22 02:36:29,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 02:36:29,151 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 37 mSDsluCounter, 2890 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3482 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:29,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3482 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:36:29,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9242 states. [2022-11-22 02:36:30,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9242 to 8601. [2022-11-22 02:36:30,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8601 states, 6152 states have (on average 1.50796488946684) internal successors, (9277), 6442 states have internal predecessors, (9277), 1772 states have call successors, (1772), 473 states have call predecessors, (1772), 676 states have return successors, (2364), 1808 states have call predecessors, (2364), 1767 states have call successors, (2364) [2022-11-22 02:36:30,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8601 states to 8601 states and 13413 transitions. [2022-11-22 02:36:30,300 INFO L78 Accepts]: Start accepts. Automaton has 8601 states and 13413 transitions. Word has length 109 [2022-11-22 02:36:30,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:30,300 INFO L495 AbstractCegarLoop]: Abstraction has 8601 states and 13413 transitions. [2022-11-22 02:36:30,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 02:36:30,301 INFO L276 IsEmpty]: Start isEmpty. Operand 8601 states and 13413 transitions. [2022-11-22 02:36:30,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-22 02:36:30,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:30,304 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:36:30,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 02:36:30,305 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:36:30,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:30,305 INFO L85 PathProgramCache]: Analyzing trace with hash -981974442, now seen corresponding path program 1 times [2022-11-22 02:36:30,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:30,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144170565] [2022-11-22 02:36:30,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:30,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:30,534 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 02:36:30,534 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:30,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144170565] [2022-11-22 02:36:30,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144170565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:36:30,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:36:30,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:36:30,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546358783] [2022-11-22 02:36:30,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:36:30,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:36:30,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:30,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:36:30,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:36:30,539 INFO L87 Difference]: Start difference. First operand 8601 states and 13413 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 02:36:32,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:32,147 INFO L93 Difference]: Finished difference Result 15505 states and 24429 transitions. [2022-11-22 02:36:32,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:36:32,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) Word has length 110 [2022-11-22 02:36:32,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:32,193 INFO L225 Difference]: With dead ends: 15505 [2022-11-22 02:36:32,193 INFO L226 Difference]: Without dead ends: 9314 [2022-11-22 02:36:32,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 02:36:32,220 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 36 mSDsluCounter, 2910 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3507 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:32,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3507 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:36:32,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9314 states. [2022-11-22 02:36:33,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9314 to 8602. [2022-11-22 02:36:33,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8602 states, 6177 states have (on average 1.5114133074307916) internal successors, (9336), 6422 states have internal predecessors, (9336), 1784 states have call successors, (1784), 469 states have call predecessors, (1784), 640 states have return successors, (2318), 1833 states have call predecessors, (2318), 1779 states have call successors, (2318) [2022-11-22 02:36:33,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8602 states to 8602 states and 13438 transitions. [2022-11-22 02:36:33,534 INFO L78 Accepts]: Start accepts. Automaton has 8602 states and 13438 transitions. Word has length 110 [2022-11-22 02:36:33,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:33,534 INFO L495 AbstractCegarLoop]: Abstraction has 8602 states and 13438 transitions. [2022-11-22 02:36:33,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 02:36:33,535 INFO L276 IsEmpty]: Start isEmpty. Operand 8602 states and 13438 transitions. [2022-11-22 02:36:33,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-22 02:36:33,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:33,539 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:36:33,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 02:36:33,540 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:36:33,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:33,540 INFO L85 PathProgramCache]: Analyzing trace with hash -758354937, now seen corresponding path program 1 times [2022-11-22 02:36:33,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:33,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130448583] [2022-11-22 02:36:33,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:33,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:34,126 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 02:36:34,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:34,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130448583] [2022-11-22 02:36:34,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130448583] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:36:34,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378918165] [2022-11-22 02:36:34,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:34,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:36:34,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:36:34,128 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:36:34,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:36:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:34,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 1568 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-22 02:36:34,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:36:34,774 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 02:36:34,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:36:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 02:36:35,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378918165] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:36:35,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1601032242] [2022-11-22 02:36:35,778 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2022-11-22 02:36:35,779 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:36:35,779 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:36:35,779 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:36:35,780 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:36:39,114 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 588 for LOIs [2022-11-22 02:36:40,297 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 588 for LOIs [2022-11-22 02:36:49,567 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 113 for LOIs [2022-11-22 02:36:50,467 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection__wrappee__weight with input of size 111 for LOIs [2022-11-22 02:36:50,935 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 101 for LOIs [2022-11-22 02:36:50,945 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 533 for LOIs [2022-11-22 02:36:51,244 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 87 for LOIs [2022-11-22 02:36:51,268 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 581 for LOIs [2022-11-22 02:36:54,964 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 585 for LOIs [2022-11-22 02:36:55,628 INFO L197 IcfgInterpreter]: Interpreting procedure getReverseHeading with input of size 87 for LOIs [2022-11-22 02:36:55,637 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 513 for LOIs [2022-11-22 02:36:55,775 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:37:18,587 WARN L233 SmtUtils]: Spent 7.37s 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 02:37:26,389 WARN L233 SmtUtils]: Spent 7.46s 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 02:37:35,542 WARN L233 SmtUtils]: Spent 5.53s 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 02:38:29,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1601032242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:38:29,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:38:29,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [13, 13, 13] total 72 [2022-11-22 02:38:29,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203918981] [2022-11-22 02:38:29,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:38:29,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-22 02:38:29,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:38:29,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-22 02:38:29,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=4623, Unknown=0, NotChecked=0, Total=5112 [2022-11-22 02:38:29,615 INFO L87 Difference]: Start difference. First operand 8602 states and 13438 transitions. Second operand has 47 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 29 states have internal predecessors, (72), 14 states have call successors, (20), 11 states have call predecessors, (20), 10 states have return successors, (19), 11 states have call predecessors, (19), 14 states have call successors, (19) [2022-11-22 02:38:36,470 WARN L233 SmtUtils]: Spent 6.24s 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 02:38:43,174 WARN L233 SmtUtils]: Spent 6.36s 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 02:38:52,152 WARN L233 SmtUtils]: Spent 7.78s on a formula simplification. DAG size of input: 661 DAG size of output: 591 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:39:00,427 WARN L233 SmtUtils]: Spent 7.89s on a formula simplification. DAG size of input: 673 DAG size of output: 598 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:39:07,356 WARN L233 SmtUtils]: Spent 6.55s on a formula simplification. DAG size of input: 656 DAG size of output: 620 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:39:14,253 WARN L233 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 652 DAG size of output: 616 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:39:20,905 WARN L233 SmtUtils]: Spent 6.28s on a formula simplification. DAG size of input: 635 DAG size of output: 602 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:39:27,628 WARN L233 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 641 DAG size of output: 608 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:39:34,669 WARN L233 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 653 DAG size of output: 618 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:39:41,865 WARN L233 SmtUtils]: Spent 6.75s on a formula simplification. DAG size of input: 662 DAG size of output: 622 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:39:49,092 WARN L233 SmtUtils]: Spent 6.78s on a formula simplification. DAG size of input: 666 DAG size of output: 626 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:39:56,356 WARN L233 SmtUtils]: Spent 6.82s on a formula simplification. DAG size of input: 668 DAG size of output: 628 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:40:28,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:28,709 INFO L93 Difference]: Finished difference Result 14939 states and 23424 transitions. [2022-11-22 02:40:28,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-22 02:40:28,711 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 29 states have internal predecessors, (72), 14 states have call successors, (20), 11 states have call predecessors, (20), 10 states have return successors, (19), 11 states have call predecessors, (19), 14 states have call successors, (19) Word has length 123 [2022-11-22 02:40:28,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:28,746 INFO L225 Difference]: With dead ends: 14939 [2022-11-22 02:40:28,746 INFO L226 Difference]: Without dead ends: 8587 [2022-11-22 02:40:28,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 301 SyntacticMatches, 11 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2340 ImplicationChecksByTransitivity, 180.5s TimeCoverageRelationStatistics Valid=671, Invalid=6639, Unknown=0, NotChecked=0, Total=7310 [2022-11-22 02:40:28,768 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 222 mSDsluCounter, 5826 mSDsCounter, 0 mSdLazyCounter, 8917 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 6304 SdHoareTripleChecker+Invalid, 8967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 8917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:28,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 6304 Invalid, 8967 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 8917 Invalid, 0 Unknown, 0 Unchecked, 31.5s Time] [2022-11-22 02:40:28,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8587 states. [2022-11-22 02:40:29,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8587 to 8520. [2022-11-22 02:40:29,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8520 states, 6115 states have (on average 1.513818479149632) internal successors, (9257), 6361 states have internal predecessors, (9257), 1772 states have call successors, (1772), 465 states have call predecessors, (1772), 632 states have return successors, (2300), 1816 states have call predecessors, (2300), 1767 states have call successors, (2300) [2022-11-22 02:40:29,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8520 states to 8520 states and 13329 transitions. [2022-11-22 02:40:29,838 INFO L78 Accepts]: Start accepts. Automaton has 8520 states and 13329 transitions. Word has length 123 [2022-11-22 02:40:29,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:29,838 INFO L495 AbstractCegarLoop]: Abstraction has 8520 states and 13329 transitions. [2022-11-22 02:40:29,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 29 states have internal predecessors, (72), 14 states have call successors, (20), 11 states have call predecessors, (20), 10 states have return successors, (19), 11 states have call predecessors, (19), 14 states have call successors, (19) [2022-11-22 02:40:29,839 INFO L276 IsEmpty]: Start isEmpty. Operand 8520 states and 13329 transitions. [2022-11-22 02:40:29,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-22 02:40:29,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:29,843 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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 02:40:29,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:40:30,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:40:30,067 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:40:30,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:30,067 INFO L85 PathProgramCache]: Analyzing trace with hash -505928756, now seen corresponding path program 1 times [2022-11-22 02:40:30,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:30,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37886003] [2022-11-22 02:40:30,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:30,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:30,247 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-22 02:40:30,248 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:30,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37886003] [2022-11-22 02:40:30,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37886003] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:40:30,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814681049] [2022-11-22 02:40:30,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:30,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:40:30,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:40:30,250 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:40:30,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dfffeb-1af2-40f5-ad7d-2ecd87d16597/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:40:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:30,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 1535 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:40:30,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:40:30,620 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-22 02:40:30,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:40:30,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814681049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:30,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:40:30,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-11-22 02:40:30,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056793828] [2022-11-22 02:40:30,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:30,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:40:30,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:30,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:40:30,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:40:30,623 INFO L87 Difference]: Start difference. First operand 8520 states and 13329 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-22 02:40:31,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:31,804 INFO L93 Difference]: Finished difference Result 17201 states and 27377 transitions. [2022-11-22 02:40:31,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:40:31,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 119 [2022-11-22 02:40:31,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:31,841 INFO L225 Difference]: With dead ends: 17201 [2022-11-22 02:40:31,841 INFO L226 Difference]: Without dead ends: 9222 [2022-11-22 02:40:31,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:40:31,870 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 213 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:31,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1416 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:40:31,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9222 states. [2022-11-22 02:40:33,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9222 to 9222. [2022-11-22 02:40:33,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9222 states, 6799 states have (on average 1.5547874687454037) internal successors, (10571), 7045 states have internal predecessors, (10571), 1772 states have call successors, (1772), 483 states have call predecessors, (1772), 650 states have return successors, (2300), 1816 states have call predecessors, (2300), 1767 states have call successors, (2300)