./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product03.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product03.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d8d329904ea0b1d6316e01ffefe794d3e2b31dff55810a28221762d0c9b0f86 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:33:46,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:33:46,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:33:46,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:33:46,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:33:46,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:33:46,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:33:46,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:33:46,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:33:46,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:33:46,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:33:46,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:33:46,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:33:46,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:33:46,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:33:46,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:33:46,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:33:46,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:33:46,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:33:46,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:33:46,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:33:46,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:33:46,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:33:46,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:33:46,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:33:46,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:33:46,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:33:46,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:33:46,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:33:46,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:33:46,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:33:46,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:33:46,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:33:46,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:33:46,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:33:46,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:33:46,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:33:46,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:33:46,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:33:46,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:33:46,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:33:46,631 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:33:46,672 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:33:46,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:33:46,674 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:33:46,674 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:33:46,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:33:46,675 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:33:46,676 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:33:46,676 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:33:46,676 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:33:46,677 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:33:46,678 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:33:46,678 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:33:46,678 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:33:46,679 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:33:46,679 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:33:46,679 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:33:46,680 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:33:46,680 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:33:46,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:33:46,681 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:33:46,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:33:46,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:33:46,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:33:46,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:33:46,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:33:46,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:33:46,683 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:33:46,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:33:46,684 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:33:46,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:33:46,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:33:46,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:33:46,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:33:46,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:33:46,686 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:33:46,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:33:46,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:33:46,687 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:33:46,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:33:46,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:33:46,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:33:46,695 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_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d8d329904ea0b1d6316e01ffefe794d3e2b31dff55810a28221762d0c9b0f86 [2022-11-22 02:33:47,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:33:47,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:33:47,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:33:47,095 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:33:47,096 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:33:47,097 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/product-lines/elevator_spec1_product03.cil.c [2022-11-22 02:33:50,249 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:33:50,665 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:33:50,666 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/sv-benchmarks/c/product-lines/elevator_spec1_product03.cil.c [2022-11-22 02:33:50,684 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/data/a63715ff7/5205263d441f4f03914c68f2ecd22bf6/FLAGcb8256c58 [2022-11-22 02:33:50,699 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/data/a63715ff7/5205263d441f4f03914c68f2ecd22bf6 [2022-11-22 02:33:50,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:33:50,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:33:50,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:33:50,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:33:50,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:33:50,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:33:50" (1/1) ... [2022-11-22 02:33:50,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78d4b2f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:33:50, skipping insertion in model container [2022-11-22 02:33:50,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:33:50" (1/1) ... [2022-11-22 02:33:50,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:33:50,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:33:51,296 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_4b728e40-0719-462b-a0ca-401bf60d7159/sv-benchmarks/c/product-lines/elevator_spec1_product03.cil.c[49188,49201] [2022-11-22 02:33:51,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:33:51,411 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:33:51,518 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_4b728e40-0719-462b-a0ca-401bf60d7159/sv-benchmarks/c/product-lines/elevator_spec1_product03.cil.c[49188,49201] [2022-11-22 02:33:51,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:33:51,572 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:33:51,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:33:51 WrapperNode [2022-11-22 02:33:51,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:33:51,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:33:51,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:33:51,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:33:51,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:33:51" (1/1) ... [2022-11-22 02:33:51,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:33:51" (1/1) ... [2022-11-22 02:33:51,701 INFO L138 Inliner]: procedures = 92, calls = 337, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 1060 [2022-11-22 02:33:51,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:33:51,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:33:51,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:33:51,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:33:51,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:33:51" (1/1) ... [2022-11-22 02:33:51,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:33:51" (1/1) ... [2022-11-22 02:33:51,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:33:51" (1/1) ... [2022-11-22 02:33:51,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:33:51" (1/1) ... [2022-11-22 02:33:51,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:33:51" (1/1) ... [2022-11-22 02:33:51,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:33:51" (1/1) ... [2022-11-22 02:33:51,774 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:33:51" (1/1) ... [2022-11-22 02:33:51,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:33:51" (1/1) ... [2022-11-22 02:33:51,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:33:51,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:33:51,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:33:51,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:33:51,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:33:51" (1/1) ... [2022-11-22 02:33:51,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:33:51,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:33:51,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:33:51,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:33:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-22 02:33:51,885 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-22 02:33:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:33:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-22 02:33:51,885 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-22 02:33:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-22 02:33:51,886 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-22 02:33:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-11-22 02:33:51,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-11-22 02:33:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-22 02:33:51,886 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-22 02:33:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-22 02:33:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-22 02:33:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-22 02:33:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-22 02:33:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-22 02:33:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-22 02:33:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-22 02:33:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-22 02:33:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-22 02:33:51,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-22 02:33:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-22 02:33:51,889 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-22 02:33:51,889 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-22 02:33:51,890 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-22 02:33:51,890 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-22 02:33:51,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-22 02:33:51,891 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-22 02:33:51,891 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-22 02:33:51,891 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-22 02:33:51,893 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-22 02:33:51,893 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-22 02:33:51,893 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-22 02:33:51,894 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-22 02:33:51,895 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-22 02:33:51,895 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-22 02:33:51,895 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-22 02:33:51,895 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-22 02:33:51,895 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-22 02:33:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2022-11-22 02:33:51,896 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2022-11-22 02:33:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:33:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-22 02:33:51,896 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-22 02:33:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-22 02:33:51,897 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-22 02:33:51,898 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-22 02:33:51,898 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-22 02:33:51,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:33:51,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:33:51,900 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-22 02:33:51,900 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-22 02:33:52,096 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:33:52,099 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:33:53,504 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:33:54,253 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:33:54,253 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:33:54,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:33:54 BoogieIcfgContainer [2022-11-22 02:33:54,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:33:54,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:33:54,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:33:54,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:33:54,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:33:50" (1/3) ... [2022-11-22 02:33:54,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f3c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:33:54, skipping insertion in model container [2022-11-22 02:33:54,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:33:51" (2/3) ... [2022-11-22 02:33:54,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f3c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:33:54, skipping insertion in model container [2022-11-22 02:33:54,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:33:54" (3/3) ... [2022-11-22 02:33:54,272 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product03.cil.c [2022-11-22 02:33:54,295 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:33:54,295 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:33:54,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:33:54,393 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;@1029eb02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:33:54,393 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:33:54,400 INFO L276 IsEmpty]: Start isEmpty. Operand has 375 states, 252 states have (on average 1.5952380952380953) internal successors, (402), 273 states have internal predecessors, (402), 97 states have call successors, (97), 24 states have call predecessors, (97), 24 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-22 02:33:54,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-22 02:33:54,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:33:54,422 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 02:33:54,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:33:54,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:33:54,428 INFO L85 PathProgramCache]: Analyzing trace with hash 532773280, now seen corresponding path program 1 times [2022-11-22 02:33:54,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:33:54,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692305972] [2022-11-22 02:33:54,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:33:54,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:33:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:33:55,068 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 02:33:55,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:33:55,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692305972] [2022-11-22 02:33:55,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692305972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:33:55,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:33:55,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:33:55,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889544876] [2022-11-22 02:33:55,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:33:55,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 02:33:55,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:33:55,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 02:33:55,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:33:55,129 INFO L87 Difference]: Start difference. First operand has 375 states, 252 states have (on average 1.5952380952380953) internal successors, (402), 273 states have internal predecessors, (402), 97 states have call successors, (97), 24 states have call predecessors, (97), 24 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-22 02:33:55,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:33:55,341 INFO L93 Difference]: Finished difference Result 393 states and 623 transitions. [2022-11-22 02:33:55,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 02:33:55,345 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 87 [2022-11-22 02:33:55,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:33:55,373 INFO L225 Difference]: With dead ends: 393 [2022-11-22 02:33:55,373 INFO L226 Difference]: Without dead ends: 371 [2022-11-22 02:33:55,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:33:55,388 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:33:55,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 556 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:33:55,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-11-22 02:33:55,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2022-11-22 02:33:55,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 250 states have (on average 1.584) internal successors, (396), 269 states have internal predecessors, (396), 97 states have call successors, (97), 24 states have call predecessors, (97), 23 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2022-11-22 02:33:55,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 585 transitions. [2022-11-22 02:33:55,511 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 585 transitions. Word has length 87 [2022-11-22 02:33:55,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:33:55,515 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 585 transitions. [2022-11-22 02:33:55,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-22 02:33:55,516 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 585 transitions. [2022-11-22 02:33:55,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-22 02:33:55,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:33:55,535 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 02:33:55,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:33:55,536 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:33:55,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:33:55,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1092938559, now seen corresponding path program 1 times [2022-11-22 02:33:55,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:33:55,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644131859] [2022-11-22 02:33:55,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:33:55,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:33:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:33:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 02:33:56,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:33:56,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644131859] [2022-11-22 02:33:56,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644131859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:33:56,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:33:56,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 02:33:56,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445997047] [2022-11-22 02:33:56,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:33:56,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:33:56,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:33:56,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:33:56,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:33:56,412 INFO L87 Difference]: Start difference. First operand 371 states and 585 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 6 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-22 02:33:59,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:33:59,834 INFO L93 Difference]: Finished difference Result 1255 states and 2013 transitions. [2022-11-22 02:33:59,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-22 02:33:59,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 6 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 88 [2022-11-22 02:33:59,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:33:59,848 INFO L225 Difference]: With dead ends: 1255 [2022-11-22 02:33:59,848 INFO L226 Difference]: Without dead ends: 907 [2022-11-22 02:33:59,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:33:59,864 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1956 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 3009 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2022 SdHoareTripleChecker+Valid, 2141 SdHoareTripleChecker+Invalid, 3595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 3009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:33:59,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2022 Valid, 2141 Invalid, 3595 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [586 Valid, 3009 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-22 02:33:59,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2022-11-22 02:34:00,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 849. [2022-11-22 02:34:00,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 594 states have (on average 1.6094276094276094) internal successors, (956), 629 states have internal predecessors, (956), 204 states have call successors, (204), 48 states have call predecessors, (204), 50 states have return successors, (205), 196 states have call predecessors, (205), 199 states have call successors, (205) [2022-11-22 02:34:00,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1365 transitions. [2022-11-22 02:34:00,033 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1365 transitions. Word has length 88 [2022-11-22 02:34:00,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:34:00,036 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1365 transitions. [2022-11-22 02:34:00,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 6 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-22 02:34:00,037 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1365 transitions. [2022-11-22 02:34:00,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-22 02:34:00,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:34:00,043 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:34:00,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:34:00,044 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:34:00,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:34:00,054 INFO L85 PathProgramCache]: Analyzing trace with hash -786635683, now seen corresponding path program 1 times [2022-11-22 02:34:00,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:34:00,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295706720] [2022-11-22 02:34:00,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:34:00,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:34:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:34:00,625 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-22 02:34:00,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:34:00,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295706720] [2022-11-22 02:34:00,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295706720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:34:00,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:34:00,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:34:00,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79443835] [2022-11-22 02:34:00,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:34:00,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:34:00,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:34:00,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:34:00,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:34:00,629 INFO L87 Difference]: Start difference. First operand 849 states and 1365 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-22 02:34:02,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:34:02,931 INFO L93 Difference]: Finished difference Result 1476 states and 2376 transitions. [2022-11-22 02:34:02,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:34:02,932 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), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 89 [2022-11-22 02:34:02,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:34:02,939 INFO L225 Difference]: With dead ends: 1476 [2022-11-22 02:34:02,939 INFO L226 Difference]: Without dead ends: 974 [2022-11-22 02:34:02,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:34:02,942 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 1142 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:34:02,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 1608 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-22 02:34:02,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2022-11-22 02:34:03,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 865. [2022-11-22 02:34:03,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 604 states have (on average 1.6026490066225165) internal successors, (968), 642 states have internal predecessors, (968), 206 states have call successors, (206), 51 states have call predecessors, (206), 54 states have return successors, (213), 196 states have call predecessors, (213), 201 states have call successors, (213) [2022-11-22 02:34:03,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1387 transitions. [2022-11-22 02:34:03,039 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1387 transitions. Word has length 89 [2022-11-22 02:34:03,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:34:03,040 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 1387 transitions. [2022-11-22 02:34:03,040 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), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-22 02:34:03,040 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1387 transitions. [2022-11-22 02:34:03,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-22 02:34:03,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:34:03,044 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:34:03,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:34:03,045 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:34:03,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:34:03,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1603519150, now seen corresponding path program 1 times [2022-11-22 02:34:03,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:34:03,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352390055] [2022-11-22 02:34:03,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:34:03,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:34:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:34:03,424 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-22 02:34:03,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:34:03,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352390055] [2022-11-22 02:34:03,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352390055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:34:03,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:34:03,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:34:03,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657744960] [2022-11-22 02:34:03,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:34:03,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:34:03,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:34:03,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:34:03,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:34:03,427 INFO L87 Difference]: Start difference. First operand 865 states and 1387 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-22 02:34:03,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:34:03,991 INFO L93 Difference]: Finished difference Result 936 states and 1499 transitions. [2022-11-22 02:34:03,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:34:03,992 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 93 [2022-11-22 02:34:03,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:34:04,006 INFO L225 Difference]: With dead ends: 936 [2022-11-22 02:34:04,007 INFO L226 Difference]: Without dead ends: 921 [2022-11-22 02:34:04,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:34:04,016 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 678 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:34:04,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 1464 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:34:04,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2022-11-22 02:34:04,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 869. [2022-11-22 02:34:04,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 608 states have (on average 1.5986842105263157) internal successors, (972), 646 states have internal predecessors, (972), 206 states have call successors, (206), 51 states have call predecessors, (206), 54 states have return successors, (213), 196 states have call predecessors, (213), 201 states have call successors, (213) [2022-11-22 02:34:04,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1391 transitions. [2022-11-22 02:34:04,092 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1391 transitions. Word has length 93 [2022-11-22 02:34:04,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:34:04,093 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1391 transitions. [2022-11-22 02:34:04,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-22 02:34:04,094 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1391 transitions. [2022-11-22 02:34:04,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-22 02:34:04,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:34:04,103 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:34:04,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:34:04,104 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:34:04,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:34:04,104 INFO L85 PathProgramCache]: Analyzing trace with hash -270144010, now seen corresponding path program 1 times [2022-11-22 02:34:04,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:34:04,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476866964] [2022-11-22 02:34:04,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:34:04,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:34:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:34:04,517 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-22 02:34:04,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:34:04,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476866964] [2022-11-22 02:34:04,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476866964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:34:04,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:34:04,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:34:04,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585826829] [2022-11-22 02:34:04,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:34:04,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:34:04,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:34:04,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:34:04,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:34:04,520 INFO L87 Difference]: Start difference. First operand 869 states and 1391 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-22 02:34:04,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:34:04,708 INFO L93 Difference]: Finished difference Result 888 states and 1415 transitions. [2022-11-22 02:34:04,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:34:04,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) Word has length 98 [2022-11-22 02:34:04,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:34:04,715 INFO L225 Difference]: With dead ends: 888 [2022-11-22 02:34:04,716 INFO L226 Difference]: Without dead ends: 873 [2022-11-22 02:34:04,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:34:04,720 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 41 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 2724 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:34:04,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 2724 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:34:04,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2022-11-22 02:34:04,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 869. [2022-11-22 02:34:04,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 608 states have (on average 1.5953947368421053) internal successors, (970), 646 states have internal predecessors, (970), 206 states have call successors, (206), 51 states have call predecessors, (206), 54 states have return successors, (213), 196 states have call predecessors, (213), 201 states have call successors, (213) [2022-11-22 02:34:04,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1389 transitions. [2022-11-22 02:34:04,802 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1389 transitions. Word has length 98 [2022-11-22 02:34:04,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:34:04,803 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1389 transitions. [2022-11-22 02:34:04,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-22 02:34:04,803 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1389 transitions. [2022-11-22 02:34:04,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-22 02:34:04,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:34:04,806 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:34:04,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:34:04,807 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:34:04,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:34:04,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1025183326, now seen corresponding path program 1 times [2022-11-22 02:34:04,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:34:04,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444449172] [2022-11-22 02:34:04,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:34:04,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:34:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:34:10,917 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 02:34:10,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:34:10,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444449172] [2022-11-22 02:34:10,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444449172] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:34:10,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343077941] [2022-11-22 02:34:10,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:34:10,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:34:10,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:34:10,922 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:34:10,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:34:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:34:11,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 02:34:11,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:34:11,543 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-22 02:34:11,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:34:11,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343077941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:34:11,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:34:11,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [29] total 31 [2022-11-22 02:34:11,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538763528] [2022-11-22 02:34:11,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:34:11,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:34:11,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:34:11,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:34:11,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2022-11-22 02:34:11,546 INFO L87 Difference]: Start difference. First operand 869 states and 1389 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-22 02:34:11,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:34:11,750 INFO L93 Difference]: Finished difference Result 952 states and 1513 transitions. [2022-11-22 02:34:11,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:34:11,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 105 [2022-11-22 02:34:11,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:34:11,756 INFO L225 Difference]: With dead ends: 952 [2022-11-22 02:34:11,757 INFO L226 Difference]: Without dead ends: 937 [2022-11-22 02:34:11,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=897, Unknown=0, NotChecked=0, Total=992 [2022-11-22 02:34:11,759 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 44 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:34:11,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 1717 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:34:11,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-11-22 02:34:11,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 873. [2022-11-22 02:34:11,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 612 states have (on average 1.591503267973856) internal successors, (974), 650 states have internal predecessors, (974), 206 states have call successors, (206), 51 states have call predecessors, (206), 54 states have return successors, (213), 196 states have call predecessors, (213), 201 states have call successors, (213) [2022-11-22 02:34:11,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1393 transitions. [2022-11-22 02:34:11,831 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1393 transitions. Word has length 105 [2022-11-22 02:34:11,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:34:11,831 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1393 transitions. [2022-11-22 02:34:11,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-22 02:34:11,832 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1393 transitions. [2022-11-22 02:34:11,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-22 02:34:11,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:34:11,835 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:34:11,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:34:12,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:34:12,045 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:34:12,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:34:12,045 INFO L85 PathProgramCache]: Analyzing trace with hash 24407697, now seen corresponding path program 1 times [2022-11-22 02:34:12,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:34:12,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267713439] [2022-11-22 02:34:12,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:34:12,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:34:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:34:14,014 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-22 02:34:14,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:34:14,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267713439] [2022-11-22 02:34:14,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267713439] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:34:14,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140441950] [2022-11-22 02:34:14,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:34:14,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:34:14,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:34:14,016 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:34:14,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:34:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:34:14,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 1904 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-22 02:34:14,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:34:15,208 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-22 02:34:15,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:35:11,834 WARN L233 SmtUtils]: Spent 54.23s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 02:36:06,933 WARN L233 SmtUtils]: Spent 54.53s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 02:36:07,865 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-22 02:36:07,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140441950] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:36:07,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [784366760] [2022-11-22 02:36:07,897 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2022-11-22 02:36:07,898 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:36:07,902 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:36:07,909 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:36:07,909 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:36:16,547 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 433 for LOIs [2022-11-22 02:36:16,618 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 580 for LOIs [2022-11-22 02:36:20,298 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 580 for LOIs [2022-11-22 02:36:31,970 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 443 for LOIs [2022-11-22 02:36:34,694 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 493 for LOIs [2022-11-22 02:36:36,882 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 76 for LOIs [2022-11-22 02:36:36,902 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 85 for LOIs [2022-11-22 02:36:36,919 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 589 for LOIs [2022-11-22 02:36:40,730 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 28 for LOIs [2022-11-22 02:36:40,736 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 451 for LOIs [2022-11-22 02:36:41,759 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 445 for LOIs [2022-11-22 02:36:41,840 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 552 for LOIs [2022-11-22 02:36:44,561 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 825 for LOIs [2022-11-22 02:38:57,478 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 652 for LOIs [2022-11-22 02:38:57,951 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:39:18,751 WARN L233 SmtUtils]: Spent 10.50s on a formula simplification. DAG size of input: 652 DAG size of output: 517 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:39:29,920 WARN L233 SmtUtils]: Spent 10.70s on a formula simplification. DAG size of input: 692 DAG size of output: 531 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:39:37,965 WARN L233 SmtUtils]: Spent 7.65s on a formula simplification. DAG size of input: 671 DAG size of output: 609 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:39:46,056 WARN L233 SmtUtils]: Spent 7.67s on a formula simplification. DAG size of input: 671 DAG size of output: 609 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:39:57,274 WARN L233 SmtUtils]: Spent 10.54s on a formula simplification. DAG size of input: 825 DAG size of output: 678 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:40:29,720 WARN L233 SmtUtils]: Spent 28.70s on a formula simplification. DAG size of input: 1077 DAG size of output: 694 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:41:01,808 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 493 DAG size of output: 464 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:41:09,053 WARN L233 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 620 DAG size of output: 596 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:41:15,251 WARN L233 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 620 DAG size of output: 596 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:41:21,479 WARN L233 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 622 DAG size of output: 598 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:41:28,822 WARN L233 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 626 DAG size of output: 601 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:41:35,226 WARN L233 SmtUtils]: Spent 5.77s on a formula simplification. DAG size of input: 624 DAG size of output: 600 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:41:41,742 WARN L233 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 630 DAG size of output: 604 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:41:48,360 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 635 DAG size of output: 606 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:41:54,903 WARN L233 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 634 DAG size of output: 606 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:42:28,941 WARN L233 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 645 DAG size of output: 616 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:42:35,762 WARN L233 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 645 DAG size of output: 616 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:43:39,699 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16438#(and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (= (select |#length| 9) 21) (= (select (select |#memory_int| 28) 2) 105) (= 32 (select (select |#memory_int| 28) 0)) (= 30 (select |#length| 7)) (= (select |#valid| 30) 1) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select (select |#memory_int| 31) 2) 105) (= (select |#valid| 15) 1) (= ~executiveFloor~0 4) (<= 0 (+ ~currentFloorID~0 2147483648)) (= (select (select |#memory_int| 34) 2) 105) (= 32 (select (select |#memory_int| 34) 0)) (= ~floorButtons_3~0 0) (= 10 (select |#length| 16)) (= (select |#length| 33) 4) (= (select |#valid| 26) 1) (<= ~currentHeading~0 1) (= (select (select |#memory_int| 26) 3) 0) (= (select (select |#memory_int| 20) 2) 0) (= 3 (select |#length| 20)) (= (select |#valid| 35) 1) (= (select |#valid| 9) 1) (= (select (select |#memory_int| 24) 1) 73) (= (select (select |#memory_int| 23) 3) 110) (= 91 (select (select |#memory_int| 18) 0)) (= (select |#length| 12) 25) (= (select (select |#memory_int| 25) 3) 0) (= 91 (select (select |#memory_int| 17) 0)) (= (select (select |#memory_int| 30) 4) 58) (= (select |#valid| 11) 1) (= (select |#valid| 27) 1) (= (select |#valid| 33) 1) (= (select (select |#memory_int| 32) 2) 105) (= 30 (select |#length| 4)) (= (select (select |#memory_int| 29) 2) 105) (= (select |#length| 28) 4) (= 4 (select |#length| 31)) (= (select |#length| 27) 4) (= (select |#length| 22) 3) (<= ~currentFloorID~0 2147483647) (= ~calls_3~0 0) (= 4 (select |#length| 26)) (= 6 (select |#length| 30)) (= ~calls_0~0 0) (= 112 (select (select |#memory_int| 22) 1)) (= (select (select |#memory_int| 17) 2) 93) (= 31 (select |#length| 2)) (= (select (select |#memory_int| 27) 3) 0) (= 76 (select (select |#memory_int| 24) 2)) (= ~head~0.offset 0) (= (select (select |#memory_int| 32) 3) 0) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= (select (select |#memory_int| 28) 3) 0) (= (select (select |#memory_int| 29) 3) 0) (= 95 (select (select |#memory_int| 30) 2)) (= 32 (select (select |#memory_int| 30) 0)) (= (select (select |#memory_int| 30) 1) 70) (= 4 (select |#length| 25)) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= ~floorButtons_4~0 0) (= (select |#valid| 18) 1) (= ~calls_1~0 0) (= (select |#valid| 22) 1) (= 30 (select |#length| 13)) (= (select (select |#memory_int| 18) 3) 0) (= 2 (select |#length| 36)) (= (select (select |#memory_int| 26) 2) 105) (= (select (select |#memory_int| 34) 1) 37) (= (select (select |#memory_int| 19) 4) 0) (= (select |#valid| 24) 1) (= 30 (select |#length| 10)) (= (select (select |#memory_int| 29) 1) 37) (not (= ~landingButtons_spc1_0~0 0)) (= (select (select |#memory_int| 25) 1) 37) (= (select (select |#memory_int| 17) 3) 0) (= 4 (select |#length| 34)) (= (select |#valid| 12) 1) (= (select |#valid| 32) 1) (= (select (select |#memory_int| 31) 1) 37) (= ~floorButtons_2~0 0) (= (select |#valid| 28) 1) (= (select (select |#memory_int| 18) 2) 32) (= (select (select |#memory_int| 25) 2) 105) (= (select |#length| 17) 4) (= (select (select |#memory_int| 27) 1) 37) (= (select |#length| 35) 4) (= (select |#valid| 4) 1) (= 5 (select |#length| 23)) (= (select (select |#memory_int| 35) 3) 0) (= 119 (select (select |#memory_int| 23) 2)) (= 32 (select (select |#memory_int| 24) 0)) (= 32 (select (select |#memory_int| 26) 0)) (= (select (select |#memory_int| 32) 1) 37) (= (select (select |#memory_int| 28) 1) 37) (= (select (select |#memory_int| 30) 5) 0) (= (select (select |#memory_int| 22) 2) 0) (= (select (select |#memory_int| 20) 1) 105) (= (select (select |#memory_int| 33) 3) 0) (= (select |#valid| 1) 1) (= (select |#valid| 20) 1) (= 97 (select (select |#memory_int| 19) 1)) (= ~floorButtons_1~0 0) (= 32 (select (select |#memory_int| 35) 0)) (= (select |#length| 6) 21) (= (select (select |#memory_int| 36) 1) 0) (= (select (select |#memory_int| 23) 0) 100) (= (select |#valid| 21) 1) (= 7 (select |#length| 24)) (= 58 (select (select |#memory_int| 24) 5)) (= ~floorButtons_0~0 0) (= (select (select |#memory_int| 24) 6) 0) (= (select (select |#memory_int| 31) 0) 32) (= (select (select |#memory_int| 33) 1) 37) (= 32 (select (select |#memory_int| 27) 0)) (= (select |#valid| 14) 1) (= 95 (select (select |#memory_int| 24) 3)) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (= (select (select |#memory_int| 33) 0) 32) (= (select (select |#memory_int| 35) 1) 37) (= (select |#valid| 25) 1) (= 4 (select |#length| 18)) (= ~head~0.base 0) (= (select |#length| 32) 4) (= 112 (select (select |#memory_int| 24) 4)) (= (select (select |#memory_int| 17) 1) 95) (= (select (select |#memory_int| 34) 3) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select |#valid| 36) 1) (= 9 (select |#length| 11)) (= (select |#length| 29) 4) (= (select (select |#memory_int| 1) 0) 48) (= (select |#valid| 23) 1) (= 32 (select (select |#memory_int| 29) 0)) (= (select (select |#memory_int| 26) 1) 37) (= 112 (select (select |#memory_int| 30) 3)) (<= 0 ~currentHeading~0) (= (select (select |#memory_int| 23) 4) 0) (= (select |#valid| 19) 1) (= 32 (select (select |#memory_int| 19) 3)) (= (select |#valid| 31) 1) (= (select |#valid| 34) 1) (= (select (select |#memory_int| 33) 2) 105) (= (select (select |#memory_int| 27) 2) 105) (= (select |#valid| 16) 1) (= 111 (select (select |#memory_int| 23) 1)) (= 116 (select (select |#memory_int| 19) 2)) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 20) 0) 37) (= (select (select |#memory_int| 1) 1) 0) (= (select (select |#memory_int| 36) 0) 10) (= ~calls_2~0 0) (= ~calls_4~0 0) (= (select |#valid| 29) 1) (= (select (select |#memory_int| 22) 0) 117) (= (select (select |#memory_int| 25) 0) 32) (= (select (select |#memory_int| 31) 3) 0) (= (select |#length| 21) 10) (= (select |#valid| 17) 1) (= 93 (select (select |#memory_int| 18) 1)) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= 32 (select (select |#memory_int| 19) 0)) (= (select |#length| 19) 5) (= (select |#valid| 13) 1) (< 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 12) (= (select (select |#memory_int| 35) 2) 105) (= |#NULL.base| 0) (= 32 (select (select |#memory_int| 32) 0)))' at error location [2022-11-22 02:43:39,699 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:43:39,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:43:39,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 12] total 32 [2022-11-22 02:43:39,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400629433] [2022-11-22 02:43:39,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:43:39,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-22 02:43:39,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:43:39,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-22 02:43:39,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1146, Invalid=12426, Unknown=0, NotChecked=0, Total=13572 [2022-11-22 02:43:39,705 INFO L87 Difference]: Start difference. First operand 873 states and 1393 transitions. Second operand has 32 states, 23 states have (on average 7.260869565217392) internal successors, (167), 27 states have internal predecessors, (167), 14 states have call successors, (56), 7 states have call predecessors, (56), 19 states have return successors, (58), 19 states have call predecessors, (58), 13 states have call successors, (58) [2022-11-22 02:43:58,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:43:58,711 INFO L93 Difference]: Finished difference Result 5102 states and 8235 transitions. [2022-11-22 02:43:58,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-22 02:43:58,712 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 23 states have (on average 7.260869565217392) internal successors, (167), 27 states have internal predecessors, (167), 14 states have call successors, (56), 7 states have call predecessors, (56), 19 states have return successors, (58), 19 states have call predecessors, (58), 13 states have call successors, (58) Word has length 128 [2022-11-22 02:43:58,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:43:58,741 INFO L225 Difference]: With dead ends: 5102 [2022-11-22 02:43:58,741 INFO L226 Difference]: Without dead ends: 4258 [2022-11-22 02:43:58,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 301 SyntacticMatches, 4 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13031 ImplicationChecksByTransitivity, 286.8s TimeCoverageRelationStatistics Valid=2506, Invalid=31166, Unknown=0, NotChecked=0, Total=33672 [2022-11-22 02:43:58,756 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 7572 mSDsluCounter, 7361 mSDsCounter, 0 mSdLazyCounter, 19964 mSolverCounterSat, 4668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7620 SdHoareTripleChecker+Valid, 8023 SdHoareTripleChecker+Invalid, 24632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4668 IncrementalHoareTripleChecker+Valid, 19964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:43:58,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7620 Valid, 8023 Invalid, 24632 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4668 Valid, 19964 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2022-11-22 02:43:58,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4258 states. [2022-11-22 02:43:59,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4258 to 3545. [2022-11-22 02:43:59,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3545 states, 2547 states have (on average 1.595995288574794) internal successors, (4065), 2684 states have internal predecessors, (4065), 768 states have call successors, (768), 201 states have call predecessors, (768), 229 states have return successors, (844), 739 states have call predecessors, (844), 763 states have call successors, (844) [2022-11-22 02:43:59,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 5677 transitions. [2022-11-22 02:43:59,162 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 5677 transitions. Word has length 128 [2022-11-22 02:43:59,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:43:59,164 INFO L495 AbstractCegarLoop]: Abstraction has 3545 states and 5677 transitions. [2022-11-22 02:43:59,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 23 states have (on average 7.260869565217392) internal successors, (167), 27 states have internal predecessors, (167), 14 states have call successors, (56), 7 states have call predecessors, (56), 19 states have return successors, (58), 19 states have call predecessors, (58), 13 states have call successors, (58) [2022-11-22 02:43:59,164 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 5677 transitions. [2022-11-22 02:43:59,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-22 02:43:59,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:43:59,174 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:43:59,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:43:59,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:43:59,382 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:43:59,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:43:59,382 INFO L85 PathProgramCache]: Analyzing trace with hash -4694547, now seen corresponding path program 1 times [2022-11-22 02:43:59,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:43:59,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509424958] [2022-11-22 02:43:59,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:43:59,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:43:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:43:59,781 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-22 02:43:59,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:43:59,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509424958] [2022-11-22 02:43:59,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509424958] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:43:59,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015057810] [2022-11-22 02:43:59,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:43:59,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:43:59,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:43:59,787 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:43:59,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b728e40-0719-462b-a0ca-401bf60d7159/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:44:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:44:00,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 2230 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 02:44:00,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:44:00,547 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-11-22 02:44:00,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:44:00,966 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-11-22 02:44:00,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015057810] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:44:00,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [39928572] [2022-11-22 02:44:00,970 INFO L159 IcfgInterpreter]: Started Sifa with 95 locations of interest [2022-11-22 02:44:00,971 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:44:00,971 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:44:00,971 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:44:00,972 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:44:09,445 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 410 for LOIs [2022-11-22 02:44:09,507 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 580 for LOIs [2022-11-22 02:44:22,458 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 675 for LOIs [2022-11-22 02:44:26,478 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 37 for LOIs [2022-11-22 02:44:26,638 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 24 for LOIs [2022-11-22 02:44:26,665 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 49 for LOIs [2022-11-22 02:44:26,676 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 18 for LOIs [2022-11-22 02:44:26,678 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 589 for LOIs [2022-11-22 02:44:30,281 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 24 for LOIs [2022-11-22 02:44:30,282 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 31 for LOIs [2022-11-22 02:44:30,347 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 29 for LOIs [2022-11-22 02:44:30,349 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 552 for LOIs [2022-11-22 02:44:33,067 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 825 for LOIs [2022-11-22 02:45:48,531 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 652 for LOIs [2022-11-22 02:45:48,993 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:46:08,874 WARN L233 SmtUtils]: Spent 10.43s on a formula simplification. DAG size of input: 652 DAG size of output: 517 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:46:19,885 WARN L233 SmtUtils]: Spent 10.64s on a formula simplification. DAG size of input: 692 DAG size of output: 531 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:46:27,820 WARN L233 SmtUtils]: Spent 7.64s on a formula simplification. DAG size of input: 671 DAG size of output: 609 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:46:35,796 WARN L233 SmtUtils]: Spent 7.66s on a formula simplification. DAG size of input: 671 DAG size of output: 609 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:46:46,694 WARN L233 SmtUtils]: Spent 10.44s on a formula simplification. DAG size of input: 825 DAG size of output: 678 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)