./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product23.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_f8d88f44-fe46-40b6-b02d-91072c507c9c/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8d88f44-fe46-40b6-b02d-91072c507c9c/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_f8d88f44-fe46-40b6-b02d-91072c507c9c/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8d88f44-fe46-40b6-b02d-91072c507c9c/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8d88f44-fe46-40b6-b02d-91072c507c9c/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_f8d88f44-fe46-40b6-b02d-91072c507c9c/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 be08b04703653fc518e8f41dc63d028f83e90f3984633a298492c10e4ad9cfd9 --- 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 02:10:55,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:10:55,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:10:55,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:10:55,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:10:55,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:10:55,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:10:55,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:10:55,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:10:55,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:10:55,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:10:55,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:10:55,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:10:55,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:10:55,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:10:55,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:10:55,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:10:55,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:10:55,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:10:55,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:10:55,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:10:55,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:10:55,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:10:55,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:10:55,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:10:55,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:10:55,637 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:10:55,638 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:10:55,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:10:55,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:10:55,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:10:55,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:10:55,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:10:55,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:10:55,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:10:55,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:10:55,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:10:55,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:10:55,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:10:55,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:10:55,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:10:55,655 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8d88f44-fe46-40b6-b02d-91072c507c9c/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:10:55,688 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:10:55,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:10:55,689 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:10:55,689 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:10:55,690 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:10:55,690 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:10:55,691 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:10:55,691 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:10:55,691 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:10:55,691 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:10:55,691 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:10:55,692 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:10:55,692 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:10:55,692 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:10:55,692 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:10:55,692 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:10:55,693 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:10:55,693 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:10:55,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:10:55,694 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:10:55,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:10:55,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:10:55,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:10:55,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:10:55,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:10:55,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:10:55,695 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:10:55,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:10:55,696 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:10:55,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:10:55,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:10:55,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:10:55,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:10:55,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:10:55,697 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:10:55,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:10:55,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:10:55,697 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:10:55,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:10:55,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:10:55,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:10:55,698 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_f8d88f44-fe46-40b6-b02d-91072c507c9c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8d88f44-fe46-40b6-b02d-91072c507c9c/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be08b04703653fc518e8f41dc63d028f83e90f3984633a298492c10e4ad9cfd9 [2022-11-22 02:10:55,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:10:55,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:10:55,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:10:55,990 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:10:55,992 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:10:55,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8d88f44-fe46-40b6-b02d-91072c507c9c/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c [2022-11-22 02:10:59,011 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:10:59,350 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:10:59,351 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8d88f44-fe46-40b6-b02d-91072c507c9c/sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c [2022-11-22 02:10:59,380 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8d88f44-fe46-40b6-b02d-91072c507c9c/bin/utaipan-g80aRyZoba/data/997b201e1/38bd6bf58af241eaa0eeb5c7d7472742/FLAG842cee4a3 [2022-11-22 02:10:59,399 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8d88f44-fe46-40b6-b02d-91072c507c9c/bin/utaipan-g80aRyZoba/data/997b201e1/38bd6bf58af241eaa0eeb5c7d7472742 [2022-11-22 02:10:59,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:10:59,408 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:10:59,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:10:59,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:10:59,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:10:59,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:10:59" (1/1) ... [2022-11-22 02:10:59,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c9e515b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:59, skipping insertion in model container [2022-11-22 02:10:59,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:10:59" (1/1) ... [2022-11-22 02:10:59,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:10:59,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:11:00,102 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_f8d88f44-fe46-40b6-b02d-91072c507c9c/sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c[58338,58351] [2022-11-22 02:11:00,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:11:00,149 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:11:00,285 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_f8d88f44-fe46-40b6-b02d-91072c507c9c/sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c[58338,58351] [2022-11-22 02:11:00,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:11:00,342 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:11:00,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:00 WrapperNode [2022-11-22 02:11:00,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:11:00,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:11:00,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:11:00,345 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:11:00,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:00" (1/1) ... [2022-11-22 02:11:00,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:00" (1/1) ... [2022-11-22 02:11:00,486 INFO L138 Inliner]: procedures = 96, calls = 348, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 911 [2022-11-22 02:11:00,497 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:11:00,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:11:00,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:11:00,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:11:00,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:00" (1/1) ... [2022-11-22 02:11:00,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:00" (1/1) ... [2022-11-22 02:11:00,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:00" (1/1) ... [2022-11-22 02:11:00,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:00" (1/1) ... [2022-11-22 02:11:00,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:00" (1/1) ... [2022-11-22 02:11:00,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:00" (1/1) ... [2022-11-22 02:11:00,594 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:00" (1/1) ... [2022-11-22 02:11:00,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:00" (1/1) ... [2022-11-22 02:11:00,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:11:00,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:11:00,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:11:00,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:11:00,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:00" (1/1) ... [2022-11-22 02:11:00,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:11:00,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8d88f44-fe46-40b6-b02d-91072c507c9c/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:11:00,710 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8d88f44-fe46-40b6-b02d-91072c507c9c/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:11:00,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8d88f44-fe46-40b6-b02d-91072c507c9c/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:11:00,753 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-22 02:11:00,753 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-22 02:11:00,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:11:00,753 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-11-22 02:11:00,753 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-11-22 02:11:00,753 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-22 02:11:00,754 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-22 02:11:00,754 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-22 02:11:00,754 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-22 02:11:00,754 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-22 02:11:00,754 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-22 02:11:00,754 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-11-22 02:11:00,754 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-11-22 02:11:00,754 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-22 02:11:00,754 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-22 02:11:00,754 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-22 02:11:00,755 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-22 02:11:00,755 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-22 02:11:00,755 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-22 02:11:00,755 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-22 02:11:00,755 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-22 02:11:00,755 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-22 02:11:00,755 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-22 02:11:00,755 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-22 02:11:00,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-22 02:11:00,755 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-22 02:11:00,756 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-22 02:11:00,756 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-22 02:11:00,756 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-22 02:11:00,756 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-22 02:11:00,756 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-22 02:11:00,756 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-22 02:11:00,756 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-22 02:11:00,756 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-22 02:11:00,756 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-22 02:11:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-22 02:11:00,757 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-22 02:11:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-22 02:11:00,757 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-22 02:11:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-22 02:11:00,757 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-22 02:11:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-22 02:11:00,757 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-22 02:11:00,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:11:00,758 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-22 02:11:00,758 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-22 02:11:00,758 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-22 02:11:00,758 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-22 02:11:00,758 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-22 02:11:00,758 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-22 02:11:00,759 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-22 02:11:00,759 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-22 02:11:00,759 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-11-22 02:11:00,759 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-11-22 02:11:00,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:11:00,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:11:00,760 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-22 02:11:00,760 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-22 02:11:00,935 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:11:00,937 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:11:02,118 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:11:02,939 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:11:02,939 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:11:02,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:11:02 BoogieIcfgContainer [2022-11-22 02:11:02,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:11:02,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:11:02,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:11:02,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:11:02,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:10:59" (1/3) ... [2022-11-22 02:11:02,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4296e53c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:11:02, skipping insertion in model container [2022-11-22 02:11:02,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:00" (2/3) ... [2022-11-22 02:11:02,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4296e53c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:11:02, skipping insertion in model container [2022-11-22 02:11:02,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:11:02" (3/3) ... [2022-11-22 02:11:02,952 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product23.cil.c [2022-11-22 02:11:02,972 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:11:02,973 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:11:03,033 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:11:03,040 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;@79e00c7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:11:03,041 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:11:03,047 INFO L276 IsEmpty]: Start isEmpty. Operand has 404 states, 270 states have (on average 1.5703703703703704) internal successors, (424), 291 states have internal predecessors, (424), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 99 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-22 02:11:03,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-22 02:11:03,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:03,081 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] [2022-11-22 02:11:03,081 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:11:03,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:03,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1891006212, now seen corresponding path program 1 times [2022-11-22 02:11:03,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:03,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555319950] [2022-11-22 02:11:03,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:03,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:03,676 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 02:11:03,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:11:03,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555319950] [2022-11-22 02:11:03,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555319950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:03,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:03,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:11:03,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609433086] [2022-11-22 02:11:03,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:03,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 02:11:03,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:11:03,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 02:11:03,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:11:03,739 INFO L87 Difference]: Start difference. First operand has 404 states, 270 states have (on average 1.5703703703703704) internal successors, (424), 291 states have internal predecessors, (424), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 99 states have call predecessors, (105), 105 states have call successors, (105) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-22 02:11:03,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:03,943 INFO L93 Difference]: Finished difference Result 422 states and 661 transitions. [2022-11-22 02:11:03,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 02:11:03,949 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 88 [2022-11-22 02:11:03,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:03,964 INFO L225 Difference]: With dead ends: 422 [2022-11-22 02:11:03,965 INFO L226 Difference]: Without dead ends: 400 [2022-11-22 02:11:03,968 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 02:11:03,972 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:03,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 589 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:11:03,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-11-22 02:11:04,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2022-11-22 02:11:04,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 268 states have (on average 1.5597014925373134) internal successors, (418), 287 states have internal predecessors, (418), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2022-11-22 02:11:04,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 623 transitions. [2022-11-22 02:11:04,054 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 623 transitions. Word has length 88 [2022-11-22 02:11:04,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:04,056 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 623 transitions. [2022-11-22 02:11:04,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-22 02:11:04,057 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 623 transitions. [2022-11-22 02:11:04,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-22 02:11:04,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:04,064 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 02:11:04,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:11:04,065 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:11:04,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:04,066 INFO L85 PathProgramCache]: Analyzing trace with hash 841970578, now seen corresponding path program 1 times [2022-11-22 02:11:04,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:04,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815855860] [2022-11-22 02:11:04,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:04,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:04,777 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 02:11:04,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:11:04,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815855860] [2022-11-22 02:11:04,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815855860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:04,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:04,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:11:04,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284136977] [2022-11-22 02:11:04,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:04,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:11:04,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:11:04,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:11:04,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:11:04,784 INFO L87 Difference]: Start difference. First operand 400 states and 623 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 02:11:07,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:07,544 INFO L93 Difference]: Finished difference Result 1217 states and 1930 transitions. [2022-11-22 02:11:07,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:11:07,545 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 02:11:07,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:07,552 INFO L225 Difference]: With dead ends: 1217 [2022-11-22 02:11:07,552 INFO L226 Difference]: Without dead ends: 840 [2022-11-22 02:11:07,557 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 02:11:07,558 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 1216 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 2702 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 3159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 2702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:07,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 1608 Invalid, 3159 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [457 Valid, 2702 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-22 02:11:07,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-11-22 02:11:07,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 791. [2022-11-22 02:11:07,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 540 states have (on average 1.5740740740740742) internal successors, (850), 573 states have internal predecessors, (850), 201 states have call successors, (201), 49 states have call predecessors, (201), 49 states have return successors, (202), 193 states have call predecessors, (202), 196 states have call successors, (202) [2022-11-22 02:11:07,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1253 transitions. [2022-11-22 02:11:07,646 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1253 transitions. Word has length 89 [2022-11-22 02:11:07,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:07,647 INFO L495 AbstractCegarLoop]: Abstraction has 791 states and 1253 transitions. [2022-11-22 02:11:07,647 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 02:11:07,647 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1253 transitions. [2022-11-22 02:11:07,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-22 02:11:07,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:07,652 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 02:11:07,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:11:07,652 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:11:07,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:07,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1641248, now seen corresponding path program 1 times [2022-11-22 02:11:07,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:07,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686626517] [2022-11-22 02:11:07,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:07,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:07,989 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 02:11:07,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:11:07,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686626517] [2022-11-22 02:11:07,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686626517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:07,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:07,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:11:07,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669776361] [2022-11-22 02:11:07,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:07,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:11:07,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:11:07,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:11:07,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:11:07,997 INFO L87 Difference]: Start difference. First operand 791 states and 1253 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 02:11:08,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:08,518 INFO L93 Difference]: Finished difference Result 862 states and 1365 transitions. [2022-11-22 02:11:08,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:11:08,519 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 02:11:08,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:08,527 INFO L225 Difference]: With dead ends: 862 [2022-11-22 02:11:08,527 INFO L226 Difference]: Without dead ends: 847 [2022-11-22 02:11:08,532 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 02:11:08,536 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 716 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:08,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 1547 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:11:08,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-11-22 02:11:08,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 795. [2022-11-22 02:11:08,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 544 states have (on average 1.5698529411764706) internal successors, (854), 577 states have internal predecessors, (854), 201 states have call successors, (201), 49 states have call predecessors, (201), 49 states have return successors, (202), 193 states have call predecessors, (202), 196 states have call successors, (202) [2022-11-22 02:11:08,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1257 transitions. [2022-11-22 02:11:08,630 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1257 transitions. Word has length 93 [2022-11-22 02:11:08,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:08,631 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1257 transitions. [2022-11-22 02:11:08,632 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 02:11:08,632 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1257 transitions. [2022-11-22 02:11:08,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-22 02:11:08,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:08,635 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 02:11:08,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:11:08,636 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:11:08,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:08,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1200315626, now seen corresponding path program 1 times [2022-11-22 02:11:08,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:08,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025885359] [2022-11-22 02:11:08,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:08,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:09,152 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 02:11:09,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:11:09,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025885359] [2022-11-22 02:11:09,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025885359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:09,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:09,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:11:09,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192335591] [2022-11-22 02:11:09,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:09,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:11:09,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:11:09,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:11:09,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:11:09,155 INFO L87 Difference]: Start difference. First operand 795 states and 1257 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 02:11:09,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:09,352 INFO L93 Difference]: Finished difference Result 814 states and 1281 transitions. [2022-11-22 02:11:09,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:11:09,353 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 02:11:09,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:09,362 INFO L225 Difference]: With dead ends: 814 [2022-11-22 02:11:09,363 INFO L226 Difference]: Without dead ends: 799 [2022-11-22 02:11:09,364 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 02:11:09,374 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 41 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:09,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 2889 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:11:09,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-11-22 02:11:09,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 795. [2022-11-22 02:11:09,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 544 states have (on average 1.5661764705882353) internal successors, (852), 577 states have internal predecessors, (852), 201 states have call successors, (201), 49 states have call predecessors, (201), 49 states have return successors, (202), 193 states have call predecessors, (202), 196 states have call successors, (202) [2022-11-22 02:11:09,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1255 transitions. [2022-11-22 02:11:09,439 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1255 transitions. Word has length 98 [2022-11-22 02:11:09,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:09,439 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1255 transitions. [2022-11-22 02:11:09,440 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 02:11:09,441 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1255 transitions. [2022-11-22 02:11:09,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-22 02:11:09,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:09,450 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 02:11:09,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:11:09,450 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:11:09,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:09,451 INFO L85 PathProgramCache]: Analyzing trace with hash 826927623, now seen corresponding path program 1 times [2022-11-22 02:11:09,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:09,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810741850] [2022-11-22 02:11:09,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:09,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:12,715 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-22 02:11:12,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:11:12,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810741850] [2022-11-22 02:11:12,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810741850] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:11:12,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908234359] [2022-11-22 02:11:12,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:12,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:11:12,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8d88f44-fe46-40b6-b02d-91072c507c9c/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:11:12,723 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8d88f44-fe46-40b6-b02d-91072c507c9c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:11:12,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8d88f44-fe46-40b6-b02d-91072c507c9c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:11:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:13,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 1852 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-22 02:11:13,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:11:13,231 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 02:11:13,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:11:13,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908234359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:13,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:11:13,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [19] total 21 [2022-11-22 02:11:13,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025428530] [2022-11-22 02:11:13,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:13,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:11:13,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:11:13,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:11:13,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2022-11-22 02:11:13,235 INFO L87 Difference]: Start difference. First operand 795 states and 1255 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 02:11:13,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:13,437 INFO L93 Difference]: Finished difference Result 878 states and 1379 transitions. [2022-11-22 02:11:13,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:11:13,438 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 02:11:13,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:13,444 INFO L225 Difference]: With dead ends: 878 [2022-11-22 02:11:13,444 INFO L226 Difference]: Without dead ends: 863 [2022-11-22 02:11:13,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2022-11-22 02:11:13,446 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 44 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:13,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 1816 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:11:13,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2022-11-22 02:11:13,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 799. [2022-11-22 02:11:13,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 548 states have (on average 1.562043795620438) internal successors, (856), 581 states have internal predecessors, (856), 201 states have call successors, (201), 49 states have call predecessors, (201), 49 states have return successors, (202), 193 states have call predecessors, (202), 196 states have call successors, (202) [2022-11-22 02:11:13,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1259 transitions. [2022-11-22 02:11:13,497 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1259 transitions. Word has length 105 [2022-11-22 02:11:13,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:13,498 INFO L495 AbstractCegarLoop]: Abstraction has 799 states and 1259 transitions. [2022-11-22 02:11:13,498 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 02:11:13,498 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1259 transitions. [2022-11-22 02:11:13,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-22 02:11:13,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:13,502 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 02:11:13,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8d88f44-fe46-40b6-b02d-91072c507c9c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:11:13,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8d88f44-fe46-40b6-b02d-91072c507c9c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:11:13,712 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:11:13,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:13,712 INFO L85 PathProgramCache]: Analyzing trace with hash -205965631, now seen corresponding path program 1 times [2022-11-22 02:11:13,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:13,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378973926] [2022-11-22 02:11:13,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:13,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:15,768 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 02:11:15,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:11:15,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378973926] [2022-11-22 02:11:15,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378973926] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:11:15,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058537119] [2022-11-22 02:11:15,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:15,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:11:15,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8d88f44-fe46-40b6-b02d-91072c507c9c/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:11:15,775 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8d88f44-fe46-40b6-b02d-91072c507c9c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:11:15,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8d88f44-fe46-40b6-b02d-91072c507c9c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:11:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:16,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 1916 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-22 02:11:16,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:11:16,965 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 02:11:16,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:12:08,796 WARN L233 SmtUtils]: Spent 49.20s 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 02:12:58,165 WARN L233 SmtUtils]: Spent 48.74s 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 02:12:58,887 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 02:12:58,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058537119] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:12:58,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1974409505] [2022-11-22 02:12:58,911 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2022-11-22 02:12:58,911 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:12:58,915 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:12:58,921 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:12:58,922 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:13:11,385 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 475 for LOIs [2022-11-22 02:13:11,773 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 586 for LOIs [2022-11-22 02:13:26,861 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 586 for LOIs [2022-11-22 02:14:32,105 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 447 for LOIs [2022-11-22 02:14:34,379 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 501 for LOIs [2022-11-22 02:14:36,606 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 52 for LOIs [2022-11-22 02:14:36,626 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 109 for LOIs [2022-11-22 02:14:36,643 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 593 for LOIs [2022-11-22 02:14:40,461 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 50 for LOIs [2022-11-22 02:14:40,468 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 455 for LOIs [2022-11-22 02:14:41,449 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 449 for LOIs [2022-11-22 02:14:41,529 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 556 for LOIs [2022-11-22 02:14:44,379 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 833 for LOIs [2022-11-22 02:24:07,786 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 660 for LOIs [2022-11-22 02:24:08,317 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:24:13,694 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 475 DAG size of output: 450 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:24:33,207 WARN L233 SmtUtils]: Spent 10.86s on a formula simplification. DAG size of input: 660 DAG size of output: 521 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:24:44,863 WARN L233 SmtUtils]: Spent 11.15s on a formula simplification. DAG size of input: 700 DAG size of output: 535 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:24:53,164 WARN L233 SmtUtils]: Spent 7.89s on a formula simplification. DAG size of input: 675 DAG size of output: 613 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:25:01,717 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 675 DAG size of output: 613 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:25:13,451 WARN L233 SmtUtils]: Spent 11.05s on a formula simplification. DAG size of input: 833 DAG size of output: 684 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)