./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 4e7fbc69 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_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/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_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW --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-4e7fbc6 [2022-11-23 13:50:00,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:50:00,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:50:00,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:50:00,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:50:00,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:50:00,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:50:00,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:50:00,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:50:00,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:50:00,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:50:00,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:50:00,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:50:00,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:50:00,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:50:00,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:50:00,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:50:00,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:50:00,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:50:00,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:50:00,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:50:00,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:50:00,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:50:00,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:50:00,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:50:00,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:50:00,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:50:00,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:50:00,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:50:00,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:50:00,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:50:00,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:50:00,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:50:00,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:50:00,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:50:00,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:50:00,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:50:00,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:50:00,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:50:00,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:50:00,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:50:00,729 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 13:50:00,755 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:50:00,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:50:00,756 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:50:00,756 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:50:00,757 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:50:00,757 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:50:00,757 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:50:00,758 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:50:00,758 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:50:00,758 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:50:00,758 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:50:00,759 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:50:00,759 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:50:00,759 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:50:00,759 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:50:00,760 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:50:00,760 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:50:00,760 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:50:00,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:50:00,761 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 13:50:00,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:50:00,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 13:50:00,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:50:00,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:50:00,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:50:00,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:50:00,763 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 13:50:00,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:50:00,763 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:50:00,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:50:00,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:50:00,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:50:00,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:50:00,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:50:00,765 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:50:00,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:50:00,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:50:00,765 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:50:00,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:50:00,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:50:00,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:50:00,766 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_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b02d53de4cc8dbaebc187e8fa236234211af4eca5416c7869304d04f0d61a0bd [2022-11-23 13:50:01,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:50:01,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:50:01,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:50:01,090 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:50:01,092 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:50:01,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c [2022-11-23 13:50:04,229 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:50:04,624 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:50:04,625 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c [2022-11-23 13:50:04,656 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/data/45e4d12f8/45081c9a1340414c89699f9d8f5aded3/FLAG1434785ca [2022-11-23 13:50:04,679 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/data/45e4d12f8/45081c9a1340414c89699f9d8f5aded3 [2022-11-23 13:50:04,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:50:04,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:50:04,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:50:04,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:50:04,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:50:04,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:50:04" (1/1) ... [2022-11-23 13:50:04,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb8d7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:04, skipping insertion in model container [2022-11-23 13:50:04,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:50:04" (1/1) ... [2022-11-23 13:50:04,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:50:04,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:50:05,217 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_d7fbb2e6-7f05-4045-917e-95464c8302de/sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c[40071,40084] [2022-11-23 13:50:05,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:50:05,410 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:50:05,479 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_d7fbb2e6-7f05-4045-917e-95464c8302de/sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c[40071,40084] [2022-11-23 13:50:05,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:50:05,584 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:50:05,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:05 WrapperNode [2022-11-23 13:50:05,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:50:05,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:50:05,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:50:05,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:50:05,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:05" (1/1) ... [2022-11-23 13:50:05,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:05" (1/1) ... [2022-11-23 13:50:05,683 INFO L138 Inliner]: procedures = 92, calls = 339, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 861 [2022-11-23 13:50:05,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:50:05,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:50:05,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:50:05,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:50:05,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:05" (1/1) ... [2022-11-23 13:50:05,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:05" (1/1) ... [2022-11-23 13:50:05,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:05" (1/1) ... [2022-11-23 13:50:05,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:05" (1/1) ... [2022-11-23 13:50:05,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:05" (1/1) ... [2022-11-23 13:50:05,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:05" (1/1) ... [2022-11-23 13:50:05,769 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:05" (1/1) ... [2022-11-23 13:50:05,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:05" (1/1) ... [2022-11-23 13:50:05,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:50:05,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:50:05,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:50:05,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:50:05,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:05" (1/1) ... [2022-11-23 13:50:05,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:50:05,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:50:05,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:50:05,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:50:05,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:50:05,913 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-23 13:50:05,913 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-23 13:50:05,914 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-23 13:50:05,914 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-23 13:50:05,914 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-23 13:50:05,914 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-23 13:50:05,914 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-23 13:50:05,915 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-23 13:50:05,915 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-23 13:50:05,915 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-23 13:50:05,915 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-23 13:50:05,915 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-23 13:50:05,916 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-23 13:50:05,916 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-23 13:50:05,916 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-23 13:50:05,916 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-23 13:50:05,916 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-23 13:50:05,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-23 13:50:05,917 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-23 13:50:05,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-23 13:50:05,917 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-23 13:50:05,918 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-23 13:50:05,918 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-23 13:50:05,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-23 13:50:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-23 13:50:05,920 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-23 13:50:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-23 13:50:05,920 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-23 13:50:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-23 13:50:05,921 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-23 13:50:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-23 13:50:05,921 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-23 13:50:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-23 13:50:05,922 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-23 13:50:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-23 13:50:05,923 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-23 13:50:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:50:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-23 13:50:05,923 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-23 13:50:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-23 13:50:05,924 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-23 13:50:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-23 13:50:05,924 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-23 13:50:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-23 13:50:05,925 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-23 13:50:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-11-23 13:50:05,926 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-11-23 13:50:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:50:05,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:50:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-23 13:50:05,927 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-23 13:50:06,164 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:50:06,180 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:50:07,521 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:50:08,391 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:50:08,392 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 13:50:08,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:50:08 BoogieIcfgContainer [2022-11-23 13:50:08,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:50:08,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:50:08,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:50:08,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:50:08,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:50:04" (1/3) ... [2022-11-23 13:50:08,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2685416a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:50:08, skipping insertion in model container [2022-11-23 13:50:08,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:05" (2/3) ... [2022-11-23 13:50:08,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2685416a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:50:08, skipping insertion in model container [2022-11-23 13:50:08,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:50:08" (3/3) ... [2022-11-23 13:50:08,409 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product21.cil.c [2022-11-23 13:50:08,429 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:50:08,430 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 13:50:08,507 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:50:08,516 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;@137f405f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:50:08,517 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 13:50:08,524 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) [2022-11-23 13:50:08,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-23 13:50:08,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:08,560 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] [2022-11-23 13:50:08,561 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:50:08,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:08,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1083051689, now seen corresponding path program 1 times [2022-11-23 13:50:08,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:08,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114810454] [2022-11-23 13:50:08,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:08,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:09,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:50:09,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:09,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114810454] [2022-11-23 13:50:09,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114810454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:09,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:50:09,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 13:50:09,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277103348] [2022-11-23 13:50:09,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:09,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:50:09,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:09,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:50:09,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:50:09,453 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) [2022-11-23 13:50:10,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:10,010 INFO L93 Difference]: Finished difference Result 844 states and 1368 transitions. [2022-11-23 13:50:10,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:50:10,012 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 [2022-11-23 13:50:10,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:10,028 INFO L225 Difference]: With dead ends: 844 [2022-11-23 13:50:10,028 INFO L226 Difference]: Without dead ends: 483 [2022-11-23 13:50:10,035 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 [2022-11-23 13:50:10,038 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 [2022-11-23 13:50:10,039 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] [2022-11-23 13:50:10,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-23 13:50:10,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 373. [2022-11-23 13:50:10,111 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) [2022-11-23 13:50:10,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 586 transitions. [2022-11-23 13:50:10,118 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 586 transitions. Word has length 65 [2022-11-23 13:50:10,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:10,120 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 586 transitions. [2022-11-23 13:50:10,120 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) [2022-11-23 13:50:10,120 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 586 transitions. [2022-11-23 13:50:10,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-23 13:50:10,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:10,133 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] [2022-11-23 13:50:10,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:50:10,133 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:50:10,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:10,134 INFO L85 PathProgramCache]: Analyzing trace with hash 178267563, now seen corresponding path program 1 times [2022-11-23 13:50:10,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:10,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2163149] [2022-11-23 13:50:10,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:10,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:10,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 13:50:10,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:10,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2163149] [2022-11-23 13:50:10,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2163149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:10,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:50:10,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 13:50:10,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243945046] [2022-11-23 13:50:10,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:10,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 13:50:10,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:10,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 13:50:10,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 13:50:10,707 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) [2022-11-23 13:50:14,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:14,440 INFO L93 Difference]: Finished difference Result 1280 states and 2045 transitions. [2022-11-23 13:50:14,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 13:50:14,441 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 [2022-11-23 13:50:14,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:14,453 INFO L225 Difference]: With dead ends: 1280 [2022-11-23 13:50:14,453 INFO L226 Difference]: Without dead ends: 923 [2022-11-23 13:50:14,461 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 [2022-11-23 13:50:14,464 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 1733 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 3918 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1799 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 4504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 3918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-23 13:50:14,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1799 Valid, 2525 Invalid, 4504 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [586 Valid, 3918 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-23 13:50:14,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2022-11-23 13:50:14,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 867. [2022-11-23 13:50:14,607 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) [2022-11-23 13:50:14,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1389 transitions. [2022-11-23 13:50:14,614 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1389 transitions. Word has length 68 [2022-11-23 13:50:14,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:14,615 INFO L495 AbstractCegarLoop]: Abstraction has 867 states and 1389 transitions. [2022-11-23 13:50:14,616 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) [2022-11-23 13:50:14,616 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1389 transitions. [2022-11-23 13:50:14,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 13:50:14,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:14,622 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] [2022-11-23 13:50:14,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 13:50:14,623 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:50:14,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:14,633 INFO L85 PathProgramCache]: Analyzing trace with hash 314891806, now seen corresponding path program 1 times [2022-11-23 13:50:14,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:14,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164126252] [2022-11-23 13:50:14,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:14,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 13:50:15,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:15,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164126252] [2022-11-23 13:50:15,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164126252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:15,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:50:15,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 13:50:15,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219597046] [2022-11-23 13:50:15,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:15,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 13:50:15,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:15,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 13:50:15,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:50:15,911 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) [2022-11-23 13:50:20,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:20,348 INFO L93 Difference]: Finished difference Result 3556 states and 5794 transitions. [2022-11-23 13:50:20,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 13:50:20,349 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 [2022-11-23 13:50:20,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:20,386 INFO L225 Difference]: With dead ends: 3556 [2022-11-23 13:50:20,386 INFO L226 Difference]: Without dead ends: 2706 [2022-11-23 13:50:20,394 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 [2022-11-23 13:50:20,395 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 2165 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 3185 mSolverCounterSat, 928 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s 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 [2022-11-23 13:50:20,396 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] [2022-11-23 13:50:20,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2022-11-23 13:50:20,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 2502. [2022-11-23 13:50:20,663 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) [2022-11-23 13:50:20,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 4041 transitions. [2022-11-23 13:50:20,686 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 4041 transitions. Word has length 73 [2022-11-23 13:50:20,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:20,688 INFO L495 AbstractCegarLoop]: Abstraction has 2502 states and 4041 transitions. [2022-11-23 13:50:20,689 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) [2022-11-23 13:50:20,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 4041 transitions. [2022-11-23 13:50:20,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-23 13:50:20,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:20,693 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] [2022-11-23 13:50:20,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 13:50:20,694 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:50:20,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:20,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1649083650, now seen corresponding path program 1 times [2022-11-23 13:50:20,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:20,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9794730] [2022-11-23 13:50:20,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:20,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:20,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 13:50:20,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:20,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9794730] [2022-11-23 13:50:20,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9794730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:20,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:50:20,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 13:50:20,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739693122] [2022-11-23 13:50:21,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:21,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 13:50:21,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:21,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 13:50:21,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:50:21,003 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) [2022-11-23 13:50:21,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:21,529 INFO L93 Difference]: Finished difference Result 4303 states and 6959 transitions. [2022-11-23 13:50:21,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 13:50:21,530 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 [2022-11-23 13:50:21,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:21,548 INFO L225 Difference]: With dead ends: 4303 [2022-11-23 13:50:21,548 INFO L226 Difference]: Without dead ends: 2769 [2022-11-23 13:50:21,555 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 [2022-11-23 13:50:21,557 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 41 mSDsluCounter, 2905 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-11-23 13:50:21,557 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] [2022-11-23 13:50:21,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2022-11-23 13:50:21,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 2575. [2022-11-23 13:50:21,843 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) [2022-11-23 13:50:21,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 4139 transitions. [2022-11-23 13:50:21,863 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 4139 transitions. Word has length 72 [2022-11-23 13:50:21,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:21,863 INFO L495 AbstractCegarLoop]: Abstraction has 2575 states and 4139 transitions. [2022-11-23 13:50:21,864 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) [2022-11-23 13:50:21,864 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 4139 transitions. [2022-11-23 13:50:21,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 13:50:21,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:21,867 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] [2022-11-23 13:50:21,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 13:50:21,867 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:50:21,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:21,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1857049602, now seen corresponding path program 1 times [2022-11-23 13:50:21,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:21,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840648009] [2022-11-23 13:50:21,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:21,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 13:50:22,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:22,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840648009] [2022-11-23 13:50:22,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840648009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:22,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:50:22,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 13:50:22,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327777802] [2022-11-23 13:50:22,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:22,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 13:50:22,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:22,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 13:50:22,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:50:22,148 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) [2022-11-23 13:50:22,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:22,629 INFO L93 Difference]: Finished difference Result 4401 states and 7082 transitions. [2022-11-23 13:50:22,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 13:50:22,630 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 [2022-11-23 13:50:22,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:22,650 INFO L225 Difference]: With dead ends: 4401 [2022-11-23 13:50:22,650 INFO L226 Difference]: Without dead ends: 2820 [2022-11-23 13:50:22,658 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 [2022-11-23 13:50:22,659 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 [2022-11-23 13:50:22,660 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] [2022-11-23 13:50:22,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2820 states. [2022-11-23 13:50:22,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2820 to 2586. [2022-11-23 13:50:22,913 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) [2022-11-23 13:50:22,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 4150 transitions. [2022-11-23 13:50:22,929 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 4150 transitions. Word has length 73 [2022-11-23 13:50:22,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:22,930 INFO L495 AbstractCegarLoop]: Abstraction has 2586 states and 4150 transitions. [2022-11-23 13:50:22,930 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) [2022-11-23 13:50:22,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 4150 transitions. [2022-11-23 13:50:22,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-23 13:50:22,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:22,933 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] [2022-11-23 13:50:22,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 13:50:22,934 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:50:22,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:22,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1744562315, now seen corresponding path program 1 times [2022-11-23 13:50:22,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:22,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699685257] [2022-11-23 13:50:22,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:22,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:23,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 13:50:23,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:23,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699685257] [2022-11-23 13:50:23,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699685257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:23,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:50:23,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 13:50:23,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342516163] [2022-11-23 13:50:23,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:23,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 13:50:23,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:23,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 13:50:23,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-23 13:50:23,245 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) [2022-11-23 13:50:26,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:26,373 INFO L93 Difference]: Finished difference Result 5886 states and 9503 transitions. [2022-11-23 13:50:26,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 13:50:26,374 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 [2022-11-23 13:50:26,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:26,403 INFO L225 Difference]: With dead ends: 5886 [2022-11-23 13:50:26,403 INFO L226 Difference]: Without dead ends: 3938 [2022-11-23 13:50:26,459 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 [2022-11-23 13:50:26,461 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 2927 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 2213 mSolverCounterSat, 1310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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, 2.6s IncrementalHoareTripleChecker+Time [2022-11-23 13:50:26,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3091 Valid, 1194 Invalid, 3523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1310 Valid, 2213 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-23 13:50:26,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2022-11-23 13:50:26,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 3762. [2022-11-23 13:50:26,841 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) [2022-11-23 13:50:26,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3762 states to 3762 states and 5932 transitions. [2022-11-23 13:50:26,860 INFO L78 Accepts]: Start accepts. Automaton has 3762 states and 5932 transitions. Word has length 80 [2022-11-23 13:50:26,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:26,861 INFO L495 AbstractCegarLoop]: Abstraction has 3762 states and 5932 transitions. [2022-11-23 13:50:26,861 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) [2022-11-23 13:50:26,861 INFO L276 IsEmpty]: Start isEmpty. Operand 3762 states and 5932 transitions. [2022-11-23 13:50:26,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-23 13:50:26,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:26,864 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] [2022-11-23 13:50:26,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 13:50:26,864 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:50:26,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:26,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1823694632, now seen corresponding path program 1 times [2022-11-23 13:50:26,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:26,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101756368] [2022-11-23 13:50:26,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:26,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:27,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 13:50:27,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:27,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101756368] [2022-11-23 13:50:27,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101756368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:27,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:50:27,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 13:50:27,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619833323] [2022-11-23 13:50:27,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:27,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 13:50:27,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:27,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 13:50:27,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:50:27,212 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) [2022-11-23 13:50:29,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:29,877 INFO L93 Difference]: Finished difference Result 7165 states and 11361 transitions. [2022-11-23 13:50:29,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 13:50:29,881 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 [2022-11-23 13:50:29,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:29,910 INFO L225 Difference]: With dead ends: 7165 [2022-11-23 13:50:29,911 INFO L226 Difference]: Without dead ends: 4268 [2022-11-23 13:50:29,926 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 [2022-11-23 13:50:29,929 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 991 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 2.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:50:29,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1067 Valid, 1610 Invalid, 2860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-23 13:50:29,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4268 states. [2022-11-23 13:50:30,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4268 to 3843. [2022-11-23 13:50:30,513 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) [2022-11-23 13:50:30,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3843 states to 3843 states and 6035 transitions. [2022-11-23 13:50:30,541 INFO L78 Accepts]: Start accepts. Automaton has 3843 states and 6035 transitions. Word has length 81 [2022-11-23 13:50:30,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:30,541 INFO L495 AbstractCegarLoop]: Abstraction has 3843 states and 6035 transitions. [2022-11-23 13:50:30,542 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) [2022-11-23 13:50:30,543 INFO L276 IsEmpty]: Start isEmpty. Operand 3843 states and 6035 transitions. [2022-11-23 13:50:30,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-23 13:50:30,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:30,545 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] [2022-11-23 13:50:30,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 13:50:30,546 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:50:30,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:30,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1646512634, now seen corresponding path program 1 times [2022-11-23 13:50:30,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:30,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760588990] [2022-11-23 13:50:30,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:30,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 13:50:30,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:30,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760588990] [2022-11-23 13:50:30,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760588990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:30,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:50:30,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 13:50:30,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120088781] [2022-11-23 13:50:30,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:30,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 13:50:30,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:30,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 13:50:30,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 13:50:30,795 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) [2022-11-23 13:50:31,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:31,594 INFO L93 Difference]: Finished difference Result 3947 states and 6197 transitions. [2022-11-23 13:50:31,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:50:31,595 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 [2022-11-23 13:50:31,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:31,622 INFO L225 Difference]: With dead ends: 3947 [2022-11-23 13:50:31,622 INFO L226 Difference]: Without dead ends: 3932 [2022-11-23 13:50:31,626 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 [2022-11-23 13:50:31,626 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 677 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-11-23 13:50:31,627 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] [2022-11-23 13:50:31,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3932 states. [2022-11-23 13:50:32,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3932 to 3849. [2022-11-23 13:50:32,120 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) [2022-11-23 13:50:32,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 6041 transitions. [2022-11-23 13:50:32,137 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 6041 transitions. Word has length 86 [2022-11-23 13:50:32,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:32,138 INFO L495 AbstractCegarLoop]: Abstraction has 3849 states and 6041 transitions. [2022-11-23 13:50:32,138 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) [2022-11-23 13:50:32,138 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 6041 transitions. [2022-11-23 13:50:32,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-23 13:50:32,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:32,141 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:50:32,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 13:50:32,142 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:50:32,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:32,142 INFO L85 PathProgramCache]: Analyzing trace with hash -362638526, now seen corresponding path program 1 times [2022-11-23 13:50:32,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:32,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518497551] [2022-11-23 13:50:32,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:32,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:32,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 13:50:32,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:32,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518497551] [2022-11-23 13:50:32,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518497551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:32,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:50:32,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 13:50:32,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062559011] [2022-11-23 13:50:32,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:32,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 13:50:32,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:32,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 13:50:32,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 13:50:32,459 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) [2022-11-23 13:50:33,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:33,059 INFO L93 Difference]: Finished difference Result 3870 states and 6068 transitions. [2022-11-23 13:50:33,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 13:50:33,060 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 [2022-11-23 13:50:33,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:33,085 INFO L225 Difference]: With dead ends: 3870 [2022-11-23 13:50:33,085 INFO L226 Difference]: Without dead ends: 3855 [2022-11-23 13:50:33,088 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 [2022-11-23 13:50:33,089 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 [2022-11-23 13:50:33,089 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] [2022-11-23 13:50:33,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2022-11-23 13:50:33,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 3849. [2022-11-23 13:50:33,567 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) [2022-11-23 13:50:33,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 6033 transitions. [2022-11-23 13:50:33,593 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 6033 transitions. Word has length 90 [2022-11-23 13:50:33,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:33,594 INFO L495 AbstractCegarLoop]: Abstraction has 3849 states and 6033 transitions. [2022-11-23 13:50:33,594 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) [2022-11-23 13:50:33,594 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 6033 transitions. [2022-11-23 13:50:33,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-23 13:50:33,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:33,598 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] [2022-11-23 13:50:33,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 13:50:33,599 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:50:33,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:33,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1646809079, now seen corresponding path program 1 times [2022-11-23 13:50:33,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:33,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76331511] [2022-11-23 13:50:33,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:33,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:33,892 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 13:50:33,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:33,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76331511] [2022-11-23 13:50:33,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76331511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:33,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:50:33,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:50:33,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769949281] [2022-11-23 13:50:33,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:33,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:50:33,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:33,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:50:33,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:50:33,898 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) [2022-11-23 13:50:36,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:36,145 INFO L93 Difference]: Finished difference Result 10848 states and 17263 transitions. [2022-11-23 13:50:36,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:50:36,148 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 [2022-11-23 13:50:36,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:36,191 INFO L225 Difference]: With dead ends: 10848 [2022-11-23 13:50:36,191 INFO L226 Difference]: Without dead ends: 7018 [2022-11-23 13:50:36,212 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 [2022-11-23 13:50:36,213 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 1163 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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 [2022-11-23 13:50:36,213 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] [2022-11-23 13:50:36,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7018 states. [2022-11-23 13:50:37,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7018 to 6568. [2022-11-23 13:50:37,017 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) [2022-11-23 13:50:37,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6568 states to 6568 states and 10400 transitions. [2022-11-23 13:50:37,050 INFO L78 Accepts]: Start accepts. Automaton has 6568 states and 10400 transitions. Word has length 97 [2022-11-23 13:50:37,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:37,050 INFO L495 AbstractCegarLoop]: Abstraction has 6568 states and 10400 transitions. [2022-11-23 13:50:37,051 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) [2022-11-23 13:50:37,051 INFO L276 IsEmpty]: Start isEmpty. Operand 6568 states and 10400 transitions. [2022-11-23 13:50:37,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-23 13:50:37,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:37,065 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] [2022-11-23 13:50:37,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 13:50:37,066 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:50:37,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:37,066 INFO L85 PathProgramCache]: Analyzing trace with hash -488662682, now seen corresponding path program 1 times [2022-11-23 13:50:37,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:37,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798647813] [2022-11-23 13:50:37,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:37,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:38,388 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 13:50:38,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:38,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798647813] [2022-11-23 13:50:38,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798647813] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:50:38,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751435839] [2022-11-23 13:50:38,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:38,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:50:38,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:50:38,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:50:38,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 13:50:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:38,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 1469 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 13:50:38,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:50:39,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 13:50:39,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:50:39,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751435839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:39,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:50:39,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 21 [2022-11-23 13:50:39,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965091730] [2022-11-23 13:50:39,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:39,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 13:50:39,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:39,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 13:50:39,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2022-11-23 13:50:39,748 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) [2022-11-23 13:50:43,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:43,321 INFO L93 Difference]: Finished difference Result 14380 states and 22728 transitions. [2022-11-23 13:50:43,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:50:43,322 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 [2022-11-23 13:50:43,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:43,404 INFO L225 Difference]: With dead ends: 14380 [2022-11-23 13:50:43,404 INFO L226 Difference]: Without dead ends: 7828 [2022-11-23 13:50:43,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2022-11-23 13:50:43,500 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, 2.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:50:43,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 1686 Invalid, 2358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-23 13:50:43,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7828 states. [2022-11-23 13:50:44,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7828 to 7778. [2022-11-23 13:50:44,348 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) [2022-11-23 13:50:44,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7778 states to 7778 states and 12257 transitions. [2022-11-23 13:50:44,388 INFO L78 Accepts]: Start accepts. Automaton has 7778 states and 12257 transitions. Word has length 98 [2022-11-23 13:50:44,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:44,389 INFO L495 AbstractCegarLoop]: Abstraction has 7778 states and 12257 transitions. [2022-11-23 13:50:44,389 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) [2022-11-23 13:50:44,389 INFO L276 IsEmpty]: Start isEmpty. Operand 7778 states and 12257 transitions. [2022-11-23 13:50:44,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-23 13:50:44,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:44,394 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] [2022-11-23 13:50:44,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 13:50:44,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:50:44,603 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:50:44,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:44,603 INFO L85 PathProgramCache]: Analyzing trace with hash 2013816114, now seen corresponding path program 1 times [2022-11-23 13:50:44,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:44,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135337426] [2022-11-23 13:50:44,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:44,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:44,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:45,380 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 13:50:45,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:45,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135337426] [2022-11-23 13:50:45,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135337426] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:50:45,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108115164] [2022-11-23 13:50:45,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:45,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:50:45,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:50:45,383 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:50:45,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 13:50:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:45,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 1474 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 13:50:45,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:50:48,244 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:50:48,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:50:51,124 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 13:50:51,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108115164] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:50:51,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [508953888] [2022-11-23 13:50:51,160 INFO L159 IcfgInterpreter]: Started Sifa with 95 locations of interest [2022-11-23 13:50:51,160 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:50:51,166 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:50:51,172 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:50:51,172 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:50:57,673 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 588 for LOIs [2022-11-23 13:52:15,984 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 588 for LOIs [2022-11-23 13:52:26,287 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 114 for LOIs [2022-11-23 13:52:26,881 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection__wrappee__weight with input of size 128 for LOIs [2022-11-23 13:52:27,520 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 51 for LOIs [2022-11-23 13:52:27,534 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 87 for LOIs [2022-11-23 13:52:27,553 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 99 for LOIs [2022-11-23 13:52:27,569 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 581 for LOIs [2022-11-23 13:52:31,123 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 585 for LOIs [2022-11-23 13:52:31,929 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 453 for LOIs [2022-11-23 13:52:32,195 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 91 for LOIs [2022-11-23 13:52:32,363 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 87 for LOIs [2022-11-23 13:52:32,371 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 513 for LOIs [2022-11-23 13:52:32,508 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:52:55,636 WARN L233 SmtUtils]: Spent 7.52s 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) [2022-11-23 13:53:04,005 WARN L233 SmtUtils]: Spent 7.99s 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) [2022-11-23 13:53:14,093 WARN L233 SmtUtils]: Spent 6.09s 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) [2022-11-23 13:54:20,392 WARN L233 SmtUtils]: Spent 6.56s 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) [2022-11-23 13:54:26,629 WARN L233 SmtUtils]: Spent 5.52s 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) [2022-11-23 13:54:32,872 WARN L233 SmtUtils]: Spent 5.48s 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) [2022-11-23 13:54:50,443 WARN L233 SmtUtils]: Spent 5.87s 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) [2022-11-23 13:54:57,790 WARN L233 SmtUtils]: Spent 6.51s 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) [2022-11-23 13:55:04,962 WARN L233 SmtUtils]: Spent 6.34s 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) [2022-11-23 13:55:12,636 WARN L233 SmtUtils]: Spent 6.83s 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) [2022-11-23 13:55:20,398 WARN L233 SmtUtils]: Spent 6.87s 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) [2022-11-23 13:55:28,427 WARN L233 SmtUtils]: Spent 7.12s 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) [2022-11-23 13:55:28,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [508953888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:55:28,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:55:28,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [11, 12, 12] total 94 [2022-11-23 13:55:28,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788921326] [2022-11-23 13:55:28,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:55:28,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-11-23 13:55:28,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:55:28,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-11-23 13:55:28,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=696, Invalid=8046, Unknown=0, NotChecked=0, Total=8742 [2022-11-23 13:55:28,437 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) [2022-11-23 13:55:35,563 WARN L233 SmtUtils]: Spent 6.32s 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) [2022-11-23 13:55:42,459 WARN L233 SmtUtils]: Spent 6.52s 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) [2022-11-23 13:55:49,855 WARN L233 SmtUtils]: Spent 5.70s 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) [2022-11-23 13:55:56,165 WARN L233 SmtUtils]: Spent 5.98s 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) [2022-11-23 13:56:03,504 WARN L233 SmtUtils]: Spent 6.93s 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) [2022-11-23 13:56:10,960 WARN L233 SmtUtils]: Spent 6.94s 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) [2022-11-23 13:56:17,715 WARN L233 SmtUtils]: Spent 6.35s 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) [2022-11-23 13:56:24,760 WARN L233 SmtUtils]: Spent 6.65s 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) [2022-11-23 13:56:31,852 WARN L233 SmtUtils]: Spent 6.57s 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) [2022-11-23 13:56:39,175 WARN L233 SmtUtils]: Spent 6.82s 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) [2022-11-23 13:56:46,453 WARN L233 SmtUtils]: Spent 6.79s 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) [2022-11-23 13:56:53,808 WARN L233 SmtUtils]: Spent 6.85s 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) [2022-11-23 13:57:30,000 WARN L233 SmtUtils]: Spent 5.88s 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) [2022-11-23 13:57:35,463 WARN L233 SmtUtils]: Spent 5.26s 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) [2022-11-23 13:57:41,063 WARN L233 SmtUtils]: Spent 5.29s 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) [2022-11-23 13:57:56,061 WARN L233 SmtUtils]: Spent 5.07s 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) [2022-11-23 13:58:02,216 WARN L233 SmtUtils]: Spent 5.60s 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) [2022-11-23 13:58:17,552 WARN L233 SmtUtils]: Spent 5.30s 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) [2022-11-23 13:58:24,009 WARN L233 SmtUtils]: Spent 5.87s 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) [2022-11-23 13:58:30,372 WARN L233 SmtUtils]: Spent 6.03s 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) [2022-11-23 13:58:37,157 WARN L233 SmtUtils]: Spent 6.31s 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) [2022-11-23 13:59:30,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:59:30,482 INFO L93 Difference]: Finished difference Result 16378 states and 25777 transitions. [2022-11-23 13:59:30,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-23 13:59:30,483 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 [2022-11-23 13:59:30,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:59:30,524 INFO L225 Difference]: With dead ends: 16378 [2022-11-23 13:59:30,525 INFO L226 Difference]: Without dead ends: 8600 [2022-11-23 13:59:30,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 214 SyntacticMatches, 6 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5573 ImplicationChecksByTransitivity, 331.1s TimeCoverageRelationStatistics Valid=1093, Invalid=13913, Unknown=0, NotChecked=0, Total=15006 [2022-11-23 13:59:30,556 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 807 mSDsluCounter, 9526 mSDsCounter, 0 mSdLazyCounter, 22500 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.1s 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, 85.9s IncrementalHoareTripleChecker+Time [2022-11-23 13:59:30,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 10060 Invalid, 22698 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [198 Valid, 22500 Invalid, 0 Unknown, 0 Unchecked, 85.9s Time] [2022-11-23 13:59:30,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8600 states. [2022-11-23 13:59:31,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8600 to 8365. [2022-11-23 13:59:31,588 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) [2022-11-23 13:59:31,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8365 states to 8365 states and 13106 transitions. [2022-11-23 13:59:31,630 INFO L78 Accepts]: Start accepts. Automaton has 8365 states and 13106 transitions. Word has length 100 [2022-11-23 13:59:31,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:59:31,631 INFO L495 AbstractCegarLoop]: Abstraction has 8365 states and 13106 transitions. [2022-11-23 13:59:31,631 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) [2022-11-23 13:59:31,631 INFO L276 IsEmpty]: Start isEmpty. Operand 8365 states and 13106 transitions. [2022-11-23 13:59:31,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-23 13:59:31,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:59:31,635 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] [2022-11-23 13:59:31,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 13:59:31,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 13:59:31,844 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:59:31,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:59:31,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1533472626, now seen corresponding path program 1 times [2022-11-23 13:59:31,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:59:31,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916205414] [2022-11-23 13:59:31,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:59:31,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:59:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:59:32,222 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 13:59:32,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:59:32,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916205414] [2022-11-23 13:59:32,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916205414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:59:32,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:59:32,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 13:59:32,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710705111] [2022-11-23 13:59:32,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:59:32,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 13:59:32,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:59:32,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 13:59:32,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:59:32,225 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) [2022-11-23 13:59:33,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:59:33,976 INFO L93 Difference]: Finished difference Result 15249 states and 24123 transitions. [2022-11-23 13:59:33,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 13:59:33,977 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 [2022-11-23 13:59:33,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:59:34,016 INFO L225 Difference]: With dead ends: 15249 [2022-11-23 13:59:34,016 INFO L226 Difference]: Without dead ends: 9242 [2022-11-23 13:59:34,033 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 [2022-11-23 13:59:34,034 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 [2022-11-23 13:59:34,034 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] [2022-11-23 13:59:34,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9242 states. [2022-11-23 13:59:35,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9242 to 8601. [2022-11-23 13:59:35,234 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) [2022-11-23 13:59:35,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8601 states to 8601 states and 13413 transitions. [2022-11-23 13:59:35,271 INFO L78 Accepts]: Start accepts. Automaton has 8601 states and 13413 transitions. Word has length 109 [2022-11-23 13:59:35,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:59:35,271 INFO L495 AbstractCegarLoop]: Abstraction has 8601 states and 13413 transitions. [2022-11-23 13:59:35,272 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) [2022-11-23 13:59:35,272 INFO L276 IsEmpty]: Start isEmpty. Operand 8601 states and 13413 transitions. [2022-11-23 13:59:35,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-23 13:59:35,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:59:35,276 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] [2022-11-23 13:59:35,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 13:59:35,276 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:59:35,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:59:35,276 INFO L85 PathProgramCache]: Analyzing trace with hash -981974442, now seen corresponding path program 1 times [2022-11-23 13:59:35,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:59:35,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312497204] [2022-11-23 13:59:35,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:59:35,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:59:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:59:35,564 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 13:59:35,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:59:35,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312497204] [2022-11-23 13:59:35,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312497204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:59:35,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:59:35,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 13:59:35,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507608218] [2022-11-23 13:59:35,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:59:35,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 13:59:35,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:59:35,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 13:59:35,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:59:35,569 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) [2022-11-23 13:59:36,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:59:36,751 INFO L93 Difference]: Finished difference Result 15505 states and 24429 transitions. [2022-11-23 13:59:36,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 13:59:36,751 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 [2022-11-23 13:59:36,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:59:36,799 INFO L225 Difference]: With dead ends: 15505 [2022-11-23 13:59:36,799 INFO L226 Difference]: Without dead ends: 9314 [2022-11-23 13:59:36,822 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 [2022-11-23 13:59:36,823 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 [2022-11-23 13:59:36,823 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] [2022-11-23 13:59:36,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9314 states. [2022-11-23 13:59:38,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9314 to 8602. [2022-11-23 13:59:38,096 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) [2022-11-23 13:59:38,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8602 states to 8602 states and 13438 transitions. [2022-11-23 13:59:38,133 INFO L78 Accepts]: Start accepts. Automaton has 8602 states and 13438 transitions. Word has length 110 [2022-11-23 13:59:38,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:59:38,134 INFO L495 AbstractCegarLoop]: Abstraction has 8602 states and 13438 transitions. [2022-11-23 13:59:38,134 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) [2022-11-23 13:59:38,134 INFO L276 IsEmpty]: Start isEmpty. Operand 8602 states and 13438 transitions. [2022-11-23 13:59:38,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-23 13:59:38,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:59:38,139 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] [2022-11-23 13:59:38,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 13:59:38,140 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:59:38,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:59:38,140 INFO L85 PathProgramCache]: Analyzing trace with hash -758354937, now seen corresponding path program 1 times [2022-11-23 13:59:38,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:59:38,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49836902] [2022-11-23 13:59:38,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:59:38,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:59:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:59:38,774 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 13:59:38,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:59:38,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49836902] [2022-11-23 13:59:38,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49836902] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:59:38,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304433087] [2022-11-23 13:59:38,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:59:38,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:59:38,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:59:38,780 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:59:38,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fbb2e6-7f05-4045-917e-95464c8302de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 13:59:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:59:39,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 1568 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-23 13:59:39,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:59:39,418 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 13:59:39,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:59:40,343 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 13:59:40,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304433087] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:59:40,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1689923800] [2022-11-23 13:59:40,348 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2022-11-23 13:59:40,348 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:59:40,349 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:59:40,349 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:59:40,349 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:59:43,613 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 588 for LOIs [2022-11-23 13:59:44,840 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 588 for LOIs [2022-11-23 13:59:53,868 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 113 for LOIs [2022-11-23 13:59:54,989 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection__wrappee__weight with input of size 111 for LOIs [2022-11-23 13:59:55,556 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 101 for LOIs [2022-11-23 13:59:55,566 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 533 for LOIs [2022-11-23 13:59:55,781 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 87 for LOIs [2022-11-23 13:59:55,800 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 581 for LOIs [2022-11-23 13:59:59,268 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 585 for LOIs [2022-11-23 13:59:59,921 INFO L197 IcfgInterpreter]: Interpreting procedure getReverseHeading with input of size 87 for LOIs [2022-11-23 13:59:59,929 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 513 for LOIs [2022-11-23 14:00:00,071 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:00:22,725 WARN L233 SmtUtils]: Spent 7.26s 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) [2022-11-23 14:00:30,436 WARN L233 SmtUtils]: Spent 7.27s 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) [2022-11-23 14:00:39,662 WARN L233 SmtUtils]: Spent 5.56s 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) [2022-11-23 14:01:34,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1689923800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:01:34,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:01:34,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [13, 13, 13] total 72 [2022-11-23 14:01:34,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671902914] [2022-11-23 14:01:34,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:01:34,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-23 14:01:34,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:01:34,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-23 14:01:34,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=4623, Unknown=0, NotChecked=0, Total=5112 [2022-11-23 14:01:34,240 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) [2022-11-23 14:01:40,961 WARN L233 SmtUtils]: Spent 6.13s 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) [2022-11-23 14:01:47,601 WARN L233 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 624 DAG size of output: 589 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:01:56,579 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) [2022-11-23 14:02:04,934 WARN L233 SmtUtils]: Spent 7.93s 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) [2022-11-23 14:02:11,859 WARN L233 SmtUtils]: Spent 6.54s 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) [2022-11-23 14:02:18,779 WARN L233 SmtUtils]: Spent 6.49s 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) [2022-11-23 14:02:25,359 WARN L233 SmtUtils]: Spent 6.23s 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) [2022-11-23 14:02:32,069 WARN L233 SmtUtils]: Spent 6.34s 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) [2022-11-23 14:02:39,056 WARN L233 SmtUtils]: Spent 6.51s 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) [2022-11-23 14:02:46,195 WARN L233 SmtUtils]: Spent 6.70s 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) [2022-11-23 14:02:53,564 WARN L233 SmtUtils]: Spent 6.93s 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) [2022-11-23 14:03:01,102 WARN L233 SmtUtils]: Spent 7.06s 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)