./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_bf6b261c-b1b7-4737-bf58-6c5092717065/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf6b261c-b1b7-4737-bf58-6c5092717065/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf6b261c-b1b7-4737-bf58-6c5092717065/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf6b261c-b1b7-4737-bf58-6c5092717065/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf6b261c-b1b7-4737-bf58-6c5092717065/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf6b261c-b1b7-4737-bf58-6c5092717065/bin/utaipan-gh47qXpMRh --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 3f11976cf57fe8d65e71fe2317840ceb817472b70b756607274947c31f43df4d --- 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-2329fc7 [2022-12-14 08:45:03,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:45:03,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:45:03,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:45:03,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:45:03,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:45:03,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:45:03,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:45:03,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:45:03,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:45:03,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:45:03,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:45:03,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:45:03,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:45:03,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:45:03,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:45:03,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:45:03,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:45:03,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:45:03,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:45:03,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:45:03,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:45:03,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:45:03,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:45:03,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:45:03,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:45:03,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:45:03,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:45:03,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:45:03,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:45:03,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:45:03,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:45:03,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:45:03,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:45:03,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:45:03,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:45:03,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:45:03,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:45:03,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:45:03,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:45:03,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:45:03,661 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf6b261c-b1b7-4737-bf58-6c5092717065/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 08:45:03,680 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:45:03,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:45:03,680 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:45:03,680 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:45:03,681 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:45:03,681 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:45:03,681 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:45:03,682 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:45:03,682 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:45:03,682 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:45:03,682 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:45:03,682 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:45:03,682 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:45:03,682 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:45:03,683 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:45:03,683 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:45:03,683 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:45:03,683 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:45:03,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:45:03,684 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:45:03,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:45:03,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:45:03,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:45:03,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:45:03,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:45:03,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:45:03,685 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:45:03,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:45:03,685 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:45:03,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:45:03,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:45:03,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:45:03,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:45:03,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:45:03,686 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:45:03,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:45:03,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:45:03,687 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:45:03,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:45:03,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:45:03,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:45:03,687 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_bf6b261c-b1b7-4737-bf58-6c5092717065/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf6b261c-b1b7-4737-bf58-6c5092717065/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f11976cf57fe8d65e71fe2317840ceb817472b70b756607274947c31f43df4d [2022-12-14 08:45:03,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:45:03,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:45:03,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:45:03,887 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:45:03,888 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:45:03,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf6b261c-b1b7-4737-bf58-6c5092717065/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c [2022-12-14 08:45:06,434 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:45:06,667 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:45:06,667 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf6b261c-b1b7-4737-bf58-6c5092717065/sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c [2022-12-14 08:45:06,679 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf6b261c-b1b7-4737-bf58-6c5092717065/bin/utaipan-gh47qXpMRh/data/6cd70595a/9cad2cbd994b4fb8bf51d2e3d1e97656/FLAGa64f2fbc0 [2022-12-14 08:45:06,693 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf6b261c-b1b7-4737-bf58-6c5092717065/bin/utaipan-gh47qXpMRh/data/6cd70595a/9cad2cbd994b4fb8bf51d2e3d1e97656 [2022-12-14 08:45:06,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:45:06,696 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:45:06,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:45:06,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:45:06,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:45:06,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:45:06" (1/1) ... [2022-12-14 08:45:06,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69d10a21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:45:06, skipping insertion in model container [2022-12-14 08:45:06,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:45:06" (1/1) ... [2022-12-14 08:45:06,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:45:06,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:45:07,085 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_bf6b261c-b1b7-4737-bf58-6c5092717065/sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c[45414,45427] [2022-12-14 08:45:07,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:45:07,160 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:45:07,238 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_bf6b261c-b1b7-4737-bf58-6c5092717065/sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c[45414,45427] [2022-12-14 08:45:07,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:45:07,287 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:45:07,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:45:07 WrapperNode [2022-12-14 08:45:07,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:45:07,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:45:07,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:45:07,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:45:07,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:45:07" (1/1) ... [2022-12-14 08:45:07,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:45:07" (1/1) ... [2022-12-14 08:45:07,352 INFO L138 Inliner]: procedures = 96, calls = 347, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 1123 [2022-12-14 08:45:07,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:45:07,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:45:07,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:45:07,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:45:07,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:45:07" (1/1) ... [2022-12-14 08:45:07,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:45:07" (1/1) ... [2022-12-14 08:45:07,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:45:07" (1/1) ... [2022-12-14 08:45:07,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:45:07" (1/1) ... [2022-12-14 08:45:07,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:45:07" (1/1) ... [2022-12-14 08:45:07,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:45:07" (1/1) ... [2022-12-14 08:45:07,402 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:45:07" (1/1) ... [2022-12-14 08:45:07,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:45:07" (1/1) ... [2022-12-14 08:45:07,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:45:07,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:45:07,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:45:07,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:45:07,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:45:07" (1/1) ... [2022-12-14 08:45:07,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:45:07,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf6b261c-b1b7-4737-bf58-6c5092717065/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:45:07,447 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf6b261c-b1b7-4737-bf58-6c5092717065/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:45:07,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf6b261c-b1b7-4737-bf58-6c5092717065/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:45:07,483 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-12-14 08:45:07,483 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-12-14 08:45:07,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:45:07,483 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-12-14 08:45:07,483 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-12-14 08:45:07,484 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-12-14 08:45:07,484 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-12-14 08:45:07,484 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2022-12-14 08:45:07,484 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2022-12-14 08:45:07,484 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-12-14 08:45:07,484 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-12-14 08:45:07,484 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-12-14 08:45:07,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-12-14 08:45:07,485 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-12-14 08:45:07,485 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-12-14 08:45:07,485 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-12-14 08:45:07,485 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-12-14 08:45:07,485 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-14 08:45:07,485 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-14 08:45:07,486 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-14 08:45:07,486 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-14 08:45:07,486 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-12-14 08:45:07,486 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-12-14 08:45:07,486 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-14 08:45:07,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-14 08:45:07,486 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-12-14 08:45:07,487 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-12-14 08:45:07,487 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-12-14 08:45:07,487 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-12-14 08:45:07,487 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-12-14 08:45:07,487 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-12-14 08:45:07,487 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-12-14 08:45:07,488 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-12-14 08:45:07,488 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-12-14 08:45:07,488 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-12-14 08:45:07,488 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-12-14 08:45:07,488 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-12-14 08:45:07,488 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-12-14 08:45:07,488 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-12-14 08:45:07,489 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-12-14 08:45:07,489 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-12-14 08:45:07,489 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-12-14 08:45:07,489 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-12-14 08:45:07,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:45:07,489 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-12-14 08:45:07,489 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-12-14 08:45:07,490 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-12-14 08:45:07,490 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-12-14 08:45:07,490 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-12-14 08:45:07,490 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-12-14 08:45:07,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:45:07,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:45:07,490 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-12-14 08:45:07,490 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-12-14 08:45:07,491 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-12-14 08:45:07,491 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-12-14 08:45:07,610 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:45:07,612 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:45:08,347 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:45:08,922 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:45:08,922 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 08:45:08,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:45:08 BoogieIcfgContainer [2022-12-14 08:45:08,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:45:08,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:45:08,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:45:08,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:45:08,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:45:06" (1/3) ... [2022-12-14 08:45:08,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8ed47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:45:08, skipping insertion in model container [2022-12-14 08:45:08,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:45:07" (2/3) ... [2022-12-14 08:45:08,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8ed47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:45:08, skipping insertion in model container [2022-12-14 08:45:08,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:45:08" (3/3) ... [2022-12-14 08:45:08,931 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product20.cil.c [2022-12-14 08:45:08,945 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:45:08,946 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 08:45:08,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:45:09,001 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;@1740c8d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:45:09,002 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 08:45:09,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 390 states, 260 states have (on average 1.5846153846153845) internal successors, (412), 283 states have internal predecessors, (412), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 95 states have call predecessors, (102), 102 states have call successors, (102) [2022-12-14 08:45:09,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 08:45:09,017 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:45:09,017 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:45:09,018 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:45:09,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:45:09,022 INFO L85 PathProgramCache]: Analyzing trace with hash -676483192, now seen corresponding path program 1 times [2022-12-14 08:45:09,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:45:09,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912284808] [2022-12-14 08:45:09,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:45:09,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:45:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:45:09,709 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 08:45:09,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:45:09,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912284808] [2022-12-14 08:45:09,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912284808] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:45:09,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:45:09,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 08:45:09,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804444716] [2022-12-14 08:45:09,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:45:09,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 08:45:09,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:45:09,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 08:45:09,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:45:09,739 INFO L87 Difference]: Start difference. First operand has 390 states, 260 states have (on average 1.5846153846153845) internal successors, (412), 283 states have internal predecessors, (412), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 95 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-12-14 08:45:11,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:45:11,406 INFO L93 Difference]: Finished difference Result 1260 states and 2036 transitions. [2022-12-14 08:45:11,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 08:45:11,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 54 [2022-12-14 08:45:11,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:45:11,424 INFO L225 Difference]: With dead ends: 1260 [2022-12-14 08:45:11,424 INFO L226 Difference]: Without dead ends: 887 [2022-12-14 08:45:11,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:45:11,433 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 1236 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1304 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:45:11,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1304 Valid, 1121 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-14 08:45:11,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-12-14 08:45:11,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 800. [2022-12-14 08:45:11,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 559 states have (on average 1.5992844364937389) internal successors, (894), 589 states have internal predecessors, (894), 195 states have call successors, (195), 44 states have call predecessors, (195), 45 states have return successors, (197), 179 states have call predecessors, (197), 190 states have call successors, (197) [2022-12-14 08:45:11,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1286 transitions. [2022-12-14 08:45:11,545 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1286 transitions. Word has length 54 [2022-12-14 08:45:11,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:45:11,546 INFO L495 AbstractCegarLoop]: Abstraction has 800 states and 1286 transitions. [2022-12-14 08:45:11,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-12-14 08:45:11,546 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1286 transitions. [2022-12-14 08:45:11,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-14 08:45:11,555 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:45:11,555 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] [2022-12-14 08:45:11,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:45:11,556 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:45:11,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:45:11,556 INFO L85 PathProgramCache]: Analyzing trace with hash 534240897, now seen corresponding path program 1 times [2022-12-14 08:45:11,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:45:11,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757751841] [2022-12-14 08:45:11,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:45:11,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:45:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:45:12,001 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 08:45:12,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:45:12,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757751841] [2022-12-14 08:45:12,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757751841] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:45:12,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:45:12,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 08:45:12,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786114552] [2022-12-14 08:45:12,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:45:12,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 08:45:12,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:45:12,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 08:45:12,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:45:12,005 INFO L87 Difference]: Start difference. First operand 800 states and 1286 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-12-14 08:45:14,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:45:14,222 INFO L93 Difference]: Finished difference Result 2754 states and 4471 transitions. [2022-12-14 08:45:14,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 08:45:14,223 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 98 [2022-12-14 08:45:14,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:45:14,236 INFO L225 Difference]: With dead ends: 2754 [2022-12-14 08:45:14,236 INFO L226 Difference]: Without dead ends: 1977 [2022-12-14 08:45:14,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-12-14 08:45:14,242 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 1367 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 4486 mSolverCounterSat, 708 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 2161 SdHoareTripleChecker+Invalid, 5194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 708 IncrementalHoareTripleChecker+Valid, 4486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-14 08:45:14,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1443 Valid, 2161 Invalid, 5194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [708 Valid, 4486 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-14 08:45:14,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2022-12-14 08:45:14,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1790. [2022-12-14 08:45:14,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1790 states, 1214 states have (on average 1.57166392092257) internal successors, (1908), 1286 states have internal predecessors, (1908), 482 states have call successors, (482), 81 states have call predecessors, (482), 93 states have return successors, (501), 455 states have call predecessors, (501), 477 states have call successors, (501) [2022-12-14 08:45:14,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1790 states to 1790 states and 2891 transitions. [2022-12-14 08:45:14,372 INFO L78 Accepts]: Start accepts. Automaton has 1790 states and 2891 transitions. Word has length 98 [2022-12-14 08:45:14,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:45:14,372 INFO L495 AbstractCegarLoop]: Abstraction has 1790 states and 2891 transitions. [2022-12-14 08:45:14,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-12-14 08:45:14,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1790 states and 2891 transitions. [2022-12-14 08:45:14,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-14 08:45:14,375 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:45:14,375 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:45:14,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 08:45:14,376 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:45:14,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:45:14,376 INFO L85 PathProgramCache]: Analyzing trace with hash -307169288, now seen corresponding path program 1 times [2022-12-14 08:45:14,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:45:14,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670451530] [2022-12-14 08:45:14,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:45:14,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:45:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:45:14,681 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 08:45:14,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:45:14,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670451530] [2022-12-14 08:45:14,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670451530] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:45:14,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:45:14,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 08:45:14,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640618796] [2022-12-14 08:45:14,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:45:14,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 08:45:14,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:45:14,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 08:45:14,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:45:14,683 INFO L87 Difference]: Start difference. First operand 1790 states and 2891 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-12-14 08:45:16,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:45:16,242 INFO L93 Difference]: Finished difference Result 4525 states and 7322 transitions. [2022-12-14 08:45:16,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 08:45:16,243 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 99 [2022-12-14 08:45:16,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:45:16,256 INFO L225 Difference]: With dead ends: 4525 [2022-12-14 08:45:16,256 INFO L226 Difference]: Without dead ends: 2760 [2022-12-14 08:45:16,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-14 08:45:16,265 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1165 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 2564 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 3008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:45:16,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 1667 Invalid, 3008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2564 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 08:45:16,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2022-12-14 08:45:16,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 2642. [2022-12-14 08:45:16,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2642 states, 1818 states have (on average 1.5792079207920793) internal successors, (2871), 1917 states have internal predecessors, (2871), 672 states have call successors, (672), 131 states have call predecessors, (672), 151 states have return successors, (719), 637 states have call predecessors, (719), 667 states have call successors, (719) [2022-12-14 08:45:16,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 4262 transitions. [2022-12-14 08:45:16,396 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 4262 transitions. Word has length 99 [2022-12-14 08:45:16,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:45:16,397 INFO L495 AbstractCegarLoop]: Abstraction has 2642 states and 4262 transitions. [2022-12-14 08:45:16,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-12-14 08:45:16,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 4262 transitions. [2022-12-14 08:45:16,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-14 08:45:16,399 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:45:16,399 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:45:16,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 08:45:16,399 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:45:16,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:45:16,400 INFO L85 PathProgramCache]: Analyzing trace with hash -559231047, now seen corresponding path program 1 times [2022-12-14 08:45:16,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:45:16,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442950934] [2022-12-14 08:45:16,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:45:16,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:45:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:45:16,619 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 08:45:16,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:45:16,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442950934] [2022-12-14 08:45:16,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442950934] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:45:16,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:45:16,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 08:45:16,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133513556] [2022-12-14 08:45:16,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:45:16,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 08:45:16,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:45:16,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 08:45:16,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:45:16,621 INFO L87 Difference]: Start difference. First operand 2642 states and 4262 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 08:45:17,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:45:17,196 INFO L93 Difference]: Finished difference Result 2743 states and 4428 transitions. [2022-12-14 08:45:17,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:45:17,196 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 103 [2022-12-14 08:45:17,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:45:17,206 INFO L225 Difference]: With dead ends: 2743 [2022-12-14 08:45:17,206 INFO L226 Difference]: Without dead ends: 2728 [2022-12-14 08:45:17,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:45:17,208 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 698 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:45:17,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 1872 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 08:45:17,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2728 states. [2022-12-14 08:45:17,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2728 to 2648. [2022-12-14 08:45:17,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2648 states, 1824 states have (on average 1.5773026315789473) internal successors, (2877), 1923 states have internal predecessors, (2877), 672 states have call successors, (672), 131 states have call predecessors, (672), 151 states have return successors, (719), 637 states have call predecessors, (719), 667 states have call successors, (719) [2022-12-14 08:45:17,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2648 states to 2648 states and 4268 transitions. [2022-12-14 08:45:17,325 INFO L78 Accepts]: Start accepts. Automaton has 2648 states and 4268 transitions. Word has length 103 [2022-12-14 08:45:17,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:45:17,326 INFO L495 AbstractCegarLoop]: Abstraction has 2648 states and 4268 transitions. [2022-12-14 08:45:17,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 08:45:17,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2648 states and 4268 transitions. [2022-12-14 08:45:17,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-14 08:45:17,328 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:45:17,328 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:45:17,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 08:45:17,328 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:45:17,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:45:17,329 INFO L85 PathProgramCache]: Analyzing trace with hash -2036457504, now seen corresponding path program 1 times [2022-12-14 08:45:17,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:45:17,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473701329] [2022-12-14 08:45:17,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:45:17,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:45:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:45:17,710 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 08:45:17,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:45:17,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473701329] [2022-12-14 08:45:17,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473701329] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:45:17,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:45:17,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 08:45:17,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628555026] [2022-12-14 08:45:17,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:45:17,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 08:45:17,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:45:17,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 08:45:17,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-12-14 08:45:17,713 INFO L87 Difference]: Start difference. First operand 2648 states and 4268 transitions. Second operand has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) [2022-12-14 08:45:21,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:45:21,474 INFO L93 Difference]: Finished difference Result 3073 states and 4910 transitions. [2022-12-14 08:45:21,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-14 08:45:21,475 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) Word has length 108 [2022-12-14 08:45:21,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:45:21,486 INFO L225 Difference]: With dead ends: 3073 [2022-12-14 08:45:21,486 INFO L226 Difference]: Without dead ends: 3056 [2022-12-14 08:45:21,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=375, Invalid=2277, Unknown=0, NotChecked=0, Total=2652 [2022-12-14 08:45:21,489 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 2669 mSDsluCounter, 3408 mSDsCounter, 0 mSdLazyCounter, 8821 mSolverCounterSat, 1580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2695 SdHoareTripleChecker+Valid, 3965 SdHoareTripleChecker+Invalid, 10401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1580 IncrementalHoareTripleChecker+Valid, 8821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:45:21,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2695 Valid, 3965 Invalid, 10401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1580 Valid, 8821 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-12-14 08:45:21,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3056 states. [2022-12-14 08:45:21,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3056 to 2836. [2022-12-14 08:45:21,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2836 states, 1966 states have (on average 1.5768056968463886) internal successors, (3100), 2063 states have internal predecessors, (3100), 689 states have call successors, (689), 161 states have call predecessors, (689), 180 states have return successors, (740), 655 states have call predecessors, (740), 684 states have call successors, (740) [2022-12-14 08:45:21,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2836 states to 2836 states and 4529 transitions. [2022-12-14 08:45:21,633 INFO L78 Accepts]: Start accepts. Automaton has 2836 states and 4529 transitions. Word has length 108 [2022-12-14 08:45:21,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:45:21,633 INFO L495 AbstractCegarLoop]: Abstraction has 2836 states and 4529 transitions. [2022-12-14 08:45:21,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) [2022-12-14 08:45:21,634 INFO L276 IsEmpty]: Start isEmpty. Operand 2836 states and 4529 transitions. [2022-12-14 08:45:21,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-14 08:45:21,635 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:45:21,636 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:45:21,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 08:45:21,636 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:45:21,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:45:21,636 INFO L85 PathProgramCache]: Analyzing trace with hash -711214323, now seen corresponding path program 1 times [2022-12-14 08:45:21,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:45:21,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563196028] [2022-12-14 08:45:21,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:45:21,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:45:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:45:24,430 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 08:45:24,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:45:24,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563196028] [2022-12-14 08:45:24,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563196028] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:45:24,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795978629] [2022-12-14 08:45:24,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:45:24,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:45:24,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf6b261c-b1b7-4737-bf58-6c5092717065/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:45:24,433 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf6b261c-b1b7-4737-bf58-6c5092717065/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:45:24,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf6b261c-b1b7-4737-bf58-6c5092717065/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 08:45:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:45:24,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 2087 conjuncts, 93 conjunts are in the unsatisfiable core [2022-12-14 08:45:24,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:45:25,417 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 08:45:25,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:45:25,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795978629] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:45:25,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 08:45:25,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [33] total 42 [2022-12-14 08:45:25,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392968284] [2022-12-14 08:45:25,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:45:25,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 08:45:25,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:45:25,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 08:45:25,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1595, Unknown=0, NotChecked=0, Total=1722 [2022-12-14 08:45:25,421 INFO L87 Difference]: Start difference. First operand 2836 states and 4529 transitions. Second operand has 11 states, 7 states have (on average 8.857142857142858) internal successors, (62), 9 states have internal predecessors, (62), 6 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-12-14 08:45:27,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:45:27,613 INFO L93 Difference]: Finished difference Result 5670 states and 9137 transitions. [2022-12-14 08:45:27,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 08:45:27,613 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 8.857142857142858) internal successors, (62), 9 states have internal predecessors, (62), 6 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 115 [2022-12-14 08:45:27,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:45:27,624 INFO L225 Difference]: With dead ends: 5670 [2022-12-14 08:45:27,624 INFO L226 Difference]: Without dead ends: 2861 [2022-12-14 08:45:27,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=174, Invalid=2276, Unknown=0, NotChecked=0, Total=2450 [2022-12-14 08:45:27,633 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 777 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 4131 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 4517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 4131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 08:45:27,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 662 Invalid, 4517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 4131 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 08:45:27,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2022-12-14 08:45:27,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 2784. [2022-12-14 08:45:27,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 1932 states have (on average 1.568840579710145) internal successors, (3031), 2028 states have internal predecessors, (3031), 671 states have call successors, (671), 161 states have call predecessors, (671), 180 states have return successors, (723), 638 states have call predecessors, (723), 667 states have call successors, (723) [2022-12-14 08:45:27,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 4425 transitions. [2022-12-14 08:45:27,787 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 4425 transitions. Word has length 115 [2022-12-14 08:45:27,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:45:27,787 INFO L495 AbstractCegarLoop]: Abstraction has 2784 states and 4425 transitions. [2022-12-14 08:45:27,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 8.857142857142858) internal successors, (62), 9 states have internal predecessors, (62), 6 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-12-14 08:45:27,788 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 4425 transitions. [2022-12-14 08:45:27,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-14 08:45:27,790 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:45:27,790 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:45:27,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf6b261c-b1b7-4737-bf58-6c5092717065/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 08:45:27,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf6b261c-b1b7-4737-bf58-6c5092717065/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:45:27,991 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:45:27,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:45:27,991 INFO L85 PathProgramCache]: Analyzing trace with hash -573094065, now seen corresponding path program 1 times [2022-12-14 08:45:27,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:45:27,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680836723] [2022-12-14 08:45:27,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:45:27,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:45:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:45:29,047 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 08:45:29,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:45:29,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680836723] [2022-12-14 08:45:29,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680836723] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:45:29,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:45:29,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-14 08:45:29,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501359877] [2022-12-14 08:45:29,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:45:29,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-14 08:45:29,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:45:29,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-14 08:45:29,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-12-14 08:45:29,050 INFO L87 Difference]: Start difference. First operand 2784 states and 4425 transitions. Second operand has 19 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 9 states have call successors, (22), 5 states have call predecessors, (22), 8 states have return successors, (21), 11 states have call predecessors, (21), 8 states have call successors, (21) [2022-12-14 08:45:38,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:45:38,728 INFO L93 Difference]: Finished difference Result 9606 states and 15353 transitions. [2022-12-14 08:45:38,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-12-14 08:45:38,729 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 9 states have call successors, (22), 5 states have call predecessors, (22), 8 states have return successors, (21), 11 states have call predecessors, (21), 8 states have call successors, (21) Word has length 116 [2022-12-14 08:45:38,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:45:38,744 INFO L225 Difference]: With dead ends: 9606 [2022-12-14 08:45:38,745 INFO L226 Difference]: Without dead ends: 4367 [2022-12-14 08:45:38,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2695 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1188, Invalid=7184, Unknown=0, NotChecked=0, Total=8372 [2022-12-14 08:45:38,760 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 3638 mSDsluCounter, 3759 mSDsCounter, 0 mSdLazyCounter, 22106 mSolverCounterSat, 2586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 4234 SdHoareTripleChecker+Invalid, 24692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2586 IncrementalHoareTripleChecker+Valid, 22106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:45:38,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3757 Valid, 4234 Invalid, 24692 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2586 Valid, 22106 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-12-14 08:45:38,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4367 states. [2022-12-14 08:45:39,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4367 to 4099. [2022-12-14 08:45:39,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4099 states, 2867 states have (on average 1.5563306592256714) internal successors, (4462), 2990 states have internal predecessors, (4462), 968 states have call successors, (968), 237 states have call predecessors, (968), 263 states have return successors, (1088), 926 states have call predecessors, (1088), 964 states have call successors, (1088) [2022-12-14 08:45:39,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4099 states to 4099 states and 6518 transitions. [2022-12-14 08:45:39,038 INFO L78 Accepts]: Start accepts. Automaton has 4099 states and 6518 transitions. Word has length 116 [2022-12-14 08:45:39,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:45:39,038 INFO L495 AbstractCegarLoop]: Abstraction has 4099 states and 6518 transitions. [2022-12-14 08:45:39,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 9 states have call successors, (22), 5 states have call predecessors, (22), 8 states have return successors, (21), 11 states have call predecessors, (21), 8 states have call successors, (21) [2022-12-14 08:45:39,039 INFO L276 IsEmpty]: Start isEmpty. Operand 4099 states and 6518 transitions. [2022-12-14 08:45:39,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-14 08:45:39,042 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:45:39,042 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:45:39,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 08:45:39,043 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:45:39,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:45:39,043 INFO L85 PathProgramCache]: Analyzing trace with hash -882286960, now seen corresponding path program 1 times [2022-12-14 08:45:39,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:45:39,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774779082] [2022-12-14 08:45:39,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:45:39,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:45:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:45:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 08:45:39,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:45:39,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774779082] [2022-12-14 08:45:39,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774779082] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:45:39,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:45:39,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:45:39,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817054455] [2022-12-14 08:45:39,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:45:39,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:45:39,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:45:39,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:45:39,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:45:39,218 INFO L87 Difference]: Start difference. First operand 4099 states and 6518 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-14 08:45:40,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:45:40,919 INFO L93 Difference]: Finished difference Result 11502 states and 18616 transitions. [2022-12-14 08:45:40,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 08:45:40,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 117 [2022-12-14 08:45:40,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:45:40,945 INFO L225 Difference]: With dead ends: 11502 [2022-12-14 08:45:40,945 INFO L226 Difference]: Without dead ends: 7444 [2022-12-14 08:45:40,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:45:40,960 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 1322 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 482 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 482 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:45:40,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1389 Valid, 921 Invalid, 2376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [482 Valid, 1894 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 08:45:40,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7444 states. [2022-12-14 08:45:41,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7444 to 6829. [2022-12-14 08:45:41,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6829 states, 4827 states have (on average 1.5574891236793038) internal successors, (7518), 5036 states have internal predecessors, (7518), 1555 states have call successors, (1555), 395 states have call predecessors, (1555), 446 states have return successors, (1843), 1477 states have call predecessors, (1843), 1551 states have call successors, (1843) [2022-12-14 08:45:41,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6829 states to 6829 states and 10916 transitions. [2022-12-14 08:45:41,400 INFO L78 Accepts]: Start accepts. Automaton has 6829 states and 10916 transitions. Word has length 117 [2022-12-14 08:45:41,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:45:41,400 INFO L495 AbstractCegarLoop]: Abstraction has 6829 states and 10916 transitions. [2022-12-14 08:45:41,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-14 08:45:41,401 INFO L276 IsEmpty]: Start isEmpty. Operand 6829 states and 10916 transitions. [2022-12-14 08:45:41,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-12-14 08:45:41,403 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:45:41,403 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:45:41,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 08:45:41,404 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:45:41,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:45:41,404 INFO L85 PathProgramCache]: Analyzing trace with hash 974274958, now seen corresponding path program 1 times [2022-12-14 08:45:41,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:45:41,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626675665] [2022-12-14 08:45:41,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:45:41,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:45:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:45:44,161 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-14 08:45:44,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:45:44,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626675665] [2022-12-14 08:45:44,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626675665] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:45:44,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779207601] [2022-12-14 08:45:44,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:45:44,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:45:44,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf6b261c-b1b7-4737-bf58-6c5092717065/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:45:44,162 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf6b261c-b1b7-4737-bf58-6c5092717065/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:45:44,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf6b261c-b1b7-4737-bf58-6c5092717065/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 08:45:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:45:44,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 2106 conjuncts, 125 conjunts are in the unsatisfiable core [2022-12-14 08:45:44,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:45:45,837 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 08:45:45,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:47:28,872 WARN L233 SmtUtils]: Spent 1.64m on a formula simplification. DAG size of input: 2889 DAG size of output: 109 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 08:49:13,985 WARN L233 SmtUtils]: Spent 1.74m on a formula simplification. DAG size of input: 2889 DAG size of output: 109 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 08:49:41,486 WARN L233 SmtUtils]: Spent 25.95s on a formula simplification. DAG size of input: 1454 DAG size of output: 64 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 08:50:08,871 WARN L233 SmtUtils]: Spent 26.88s on a formula simplification. DAG size of input: 1454 DAG size of output: 64 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 08:50:09,647 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 08:50:09,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779207601] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:50:09,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [677445124] [2022-12-14 08:50:09,663 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2022-12-14 08:50:09,663 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:50:09,666 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:50:09,669 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:50:09,670 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:50:14,192 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 594 for LOIs [2022-12-14 08:50:18,771 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 594 for LOIs [2022-12-14 08:50:23,522 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__executivefloor with input of size 578 for LOIs [2022-12-14 08:50:31,691 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 453 for LOIs [2022-12-14 08:50:34,259 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 509 for LOIs [2022-12-14 08:50:36,831 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 36 for LOIs [2022-12-14 08:50:36,839 INFO L197 IcfgInterpreter]: Interpreting procedure areDoorsOpen with input of size 445 for LOIs [2022-12-14 08:50:36,909 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 50 for LOIs [2022-12-14 08:50:36,914 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 599 for LOIs [2022-12-14 08:50:40,488 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 428 for LOIs [2022-12-14 08:50:40,555 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 459 for LOIs [2022-12-14 08:50:41,474 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 455 for LOIs [2022-12-14 08:50:41,549 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 562 for LOIs [2022-12-14 08:50:44,185 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 841 for LOIs [2022-12-14 08:51:03,957 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 668 for LOIs [2022-12-14 08:51:04,454 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:51:17,212 WARN L233 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 668 DAG size of output: 527 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:51:25,012 WARN L233 SmtUtils]: Spent 6.93s on a formula simplification. DAG size of input: 708 DAG size of output: 541 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:51:30,798 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 681 DAG size of output: 619 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:51:47,244 WARN L233 SmtUtils]: Spent 9.92s on a formula simplification. DAG size of input: 841 DAG size of output: 610 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:52:00,734 WARN L233 SmtUtils]: Spent 11.20s on a formula simplification. DAG size of input: 940 DAG size of output: 809 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:54:55,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [677445124] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:55,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:54:55,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [36, 21, 26] total 156 [2022-12-14 08:54:55,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451330360] [2022-12-14 08:54:55,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:55,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-12-14 08:54:55,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:55,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-12-14 08:54:55,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=22854, Unknown=0, NotChecked=0, Total=24180 [2022-12-14 08:54:55,113 INFO L87 Difference]: Start difference. First operand 6829 states and 10916 transitions. Second operand has 78 states, 60 states have (on average 1.1) internal successors, (66), 51 states have internal predecessors, (66), 22 states have call successors, (23), 15 states have call predecessors, (23), 15 states have return successors, (22), 22 states have call predecessors, (22), 21 states have call successors, (22) [2022-12-14 08:55:12,774 WARN L233 SmtUtils]: Spent 6.51s on a formula simplification. DAG size of input: 611 DAG size of output: 604 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:55:28,712 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 611 DAG size of output: 567 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:55:36,953 WARN L233 SmtUtils]: Spent 7.26s on a formula simplification. DAG size of input: 809 DAG size of output: 588 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)