./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4b59d10-a10a-4cde-9635-cda67df9ba50/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4b59d10-a10a-4cde-9635-cda67df9ba50/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4b59d10-a10a-4cde-9635-cda67df9ba50/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4b59d10-a10a-4cde-9635-cda67df9ba50/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4b59d10-a10a-4cde-9635-cda67df9ba50/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4b59d10-a10a-4cde-9635-cda67df9ba50/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 09d600be73ca435c113b9c0e8e087d96a910d62ea2126c235d6963c00b3a91c2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 00:18:52,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:18:52,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:18:52,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:18:52,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:18:52,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:18:52,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:18:52,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:18:52,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:18:52,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:18:52,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:18:52,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:18:52,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:18:52,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:18:52,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:18:52,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:18:52,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:18:52,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:18:52,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:18:52,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:18:52,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:18:52,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:18:52,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:18:52,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:18:52,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:18:52,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:18:52,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:18:52,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:18:52,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:18:52,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:18:52,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:18:52,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:18:52,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:18:52,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:18:52,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:18:52,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:18:52,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:18:52,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:18:52,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:18:52,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:18:52,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:18:52,893 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4b59d10-a10a-4cde-9635-cda67df9ba50/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 00:18:52,917 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:18:52,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:18:52,918 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:18:52,918 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:18:52,919 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:18:52,920 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:18:52,920 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:18:52,920 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:18:52,920 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:18:52,921 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:18:52,921 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:18:52,921 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:18:52,922 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:18:52,922 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:18:52,922 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:18:52,923 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:18:52,923 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:18:52,923 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:18:52,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:18:52,924 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 00:18:52,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:18:52,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 00:18:52,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:18:52,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:18:52,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:18:52,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:18:52,926 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 00:18:52,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:18:52,927 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:18:52,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:18:52,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:18:52,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:18:52,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:18:52,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:18:52,929 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:18:52,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:18:52,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:18:52,930 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:18:52,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:18:52,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:18:52,930 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:18:52,931 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_f4b59d10-a10a-4cde-9635-cda67df9ba50/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4b59d10-a10a-4cde-9635-cda67df9ba50/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09d600be73ca435c113b9c0e8e087d96a910d62ea2126c235d6963c00b3a91c2 [2022-11-22 00:18:53,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:18:53,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:18:53,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:18:53,216 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:18:53,216 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:18:53,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4b59d10-a10a-4cde-9635-cda67df9ba50/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c [2022-11-22 00:18:56,232 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:18:56,639 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:18:56,640 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4b59d10-a10a-4cde-9635-cda67df9ba50/sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c [2022-11-22 00:18:56,660 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4b59d10-a10a-4cde-9635-cda67df9ba50/bin/utaipan-g80aRyZoba/data/148b62143/c040e15df56949c09b7a322eb9fea233/FLAGe80f3b499 [2022-11-22 00:18:56,674 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4b59d10-a10a-4cde-9635-cda67df9ba50/bin/utaipan-g80aRyZoba/data/148b62143/c040e15df56949c09b7a322eb9fea233 [2022-11-22 00:18:56,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:18:56,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:18:56,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:18:56,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:18:56,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:18:56,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:18:56" (1/1) ... [2022-11-22 00:18:56,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a860f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:56, skipping insertion in model container [2022-11-22 00:18:56,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:18:56" (1/1) ... [2022-11-22 00:18:56,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:18:56,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:18:57,143 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_f4b59d10-a10a-4cde-9635-cda67df9ba50/sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c[27470,27483] [2022-11-22 00:18:57,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:18:57,398 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:18:57,469 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_f4b59d10-a10a-4cde-9635-cda67df9ba50/sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c[27470,27483] [2022-11-22 00:18:57,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:18:57,600 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:18:57,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:57 WrapperNode [2022-11-22 00:18:57,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:18:57,602 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:18:57,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:18:57,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:18:57,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:57" (1/1) ... [2022-11-22 00:18:57,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:57" (1/1) ... [2022-11-22 00:18:57,691 INFO L138 Inliner]: procedures = 90, calls = 333, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 791 [2022-11-22 00:18:57,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:18:57,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:18:57,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:18:57,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:18:57,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:57" (1/1) ... [2022-11-22 00:18:57,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:57" (1/1) ... [2022-11-22 00:18:57,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:57" (1/1) ... [2022-11-22 00:18:57,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:57" (1/1) ... [2022-11-22 00:18:57,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:57" (1/1) ... [2022-11-22 00:18:57,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:57" (1/1) ... [2022-11-22 00:18:57,747 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:57" (1/1) ... [2022-11-22 00:18:57,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:57" (1/1) ... [2022-11-22 00:18:57,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:18:57,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:18:57,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:18:57,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:18:57,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:57" (1/1) ... [2022-11-22 00:18:57,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:18:57,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4b59d10-a10a-4cde-9635-cda67df9ba50/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:18:57,798 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4b59d10-a10a-4cde-9635-cda67df9ba50/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:18:57,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4b59d10-a10a-4cde-9635-cda67df9ba50/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:18:57,889 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-22 00:18:57,889 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-22 00:18:57,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:18:57,889 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-22 00:18:57,890 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-22 00:18:57,890 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-22 00:18:57,890 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-22 00:18:57,890 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-22 00:18:57,890 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-22 00:18:57,891 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-22 00:18:57,891 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-22 00:18:57,891 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-22 00:18:57,891 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-22 00:18:57,891 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-22 00:18:57,892 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-22 00:18:57,892 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-22 00:18:57,892 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-22 00:18:57,892 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-22 00:18:57,892 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-22 00:18:57,893 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-22 00:18:57,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-22 00:18:57,893 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-22 00:18:57,894 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-22 00:18:57,894 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-22 00:18:57,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-22 00:18:57,895 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-22 00:18:57,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-22 00:18:57,896 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-22 00:18:57,896 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-22 00:18:57,896 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-22 00:18:57,898 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-22 00:18:57,898 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-22 00:18:57,899 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-22 00:18:57,899 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-22 00:18:57,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-22 00:18:57,899 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-22 00:18:57,899 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-22 00:18:57,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:18:57,900 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-22 00:18:57,900 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-22 00:18:57,900 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-22 00:18:57,900 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-22 00:18:57,901 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-22 00:18:57,901 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-22 00:18:57,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:18:57,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:18:57,902 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-22 00:18:57,902 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-22 00:18:58,138 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:18:58,140 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:18:59,375 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:19:00,195 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:19:00,195 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 00:19:00,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:19:00 BoogieIcfgContainer [2022-11-22 00:19:00,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:19:00,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:19:00,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:19:00,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:19:00,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:18:56" (1/3) ... [2022-11-22 00:19:00,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e2775a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:19:00, skipping insertion in model container [2022-11-22 00:19:00,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:18:57" (2/3) ... [2022-11-22 00:19:00,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e2775a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:19:00, skipping insertion in model container [2022-11-22 00:19:00,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:19:00" (3/3) ... [2022-11-22 00:19:00,209 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product17.cil.c [2022-11-22 00:19:00,232 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:19:00,233 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 00:19:00,310 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:19:00,318 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;@25211945, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:19:00,319 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 00:19:00,326 INFO L276 IsEmpty]: Start isEmpty. Operand has 354 states, 239 states have (on average 1.6150627615062763) internal successors, (386), 260 states have internal predecessors, (386), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-22 00:19:00,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-22 00:19:00,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:19:00,347 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:19:00,347 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:19:00,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:19:00,353 INFO L85 PathProgramCache]: Analyzing trace with hash -975839384, now seen corresponding path program 1 times [2022-11-22 00:19:00,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:19:00,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823004837] [2022-11-22 00:19:00,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:19:00,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:19:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:19:01,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 00:19:01,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:19:01,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823004837] [2022-11-22 00:19:01,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823004837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:19:01,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:19:01,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:19:01,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786093530] [2022-11-22 00:19:01,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:19:01,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 00:19:01,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:19:01,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 00:19:01,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:19:01,503 INFO L87 Difference]: Start difference. First operand has 354 states, 239 states have (on average 1.6150627615062763) internal successors, (386), 260 states have internal predecessors, (386), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-22 00:19:04,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:19:04,483 INFO L93 Difference]: Finished difference Result 1177 states and 1929 transitions. [2022-11-22 00:19:04,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 00:19:04,486 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 62 [2022-11-22 00:19:04,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:19:04,516 INFO L225 Difference]: With dead ends: 1177 [2022-11-22 00:19:04,516 INFO L226 Difference]: Without dead ends: 840 [2022-11-22 00:19:04,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-11-22 00:19:04,532 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 1636 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 3039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:19:04,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1699 Valid, 1676 Invalid, 3039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-22 00:19:04,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-11-22 00:19:04,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 791. [2022-11-22 00:19:04,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 558 states have (on average 1.636200716845878) internal successors, (913), 593 states have internal predecessors, (913), 188 states have call successors, (188), 42 states have call predecessors, (188), 44 states have return successors, (189), 180 states have call predecessors, (189), 183 states have call successors, (189) [2022-11-22 00:19:04,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1290 transitions. [2022-11-22 00:19:04,697 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1290 transitions. Word has length 62 [2022-11-22 00:19:04,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:19:04,698 INFO L495 AbstractCegarLoop]: Abstraction has 791 states and 1290 transitions. [2022-11-22 00:19:04,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-22 00:19:04,698 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1290 transitions. [2022-11-22 00:19:04,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-22 00:19:04,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:19:04,703 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:19:04,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:19:04,704 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:19:04,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:19:04,705 INFO L85 PathProgramCache]: Analyzing trace with hash -2018824679, now seen corresponding path program 1 times [2022-11-22 00:19:04,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:19:04,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858592200] [2022-11-22 00:19:04,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:19:04,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:19:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:19:05,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 00:19:05,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:19:05,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858592200] [2022-11-22 00:19:05,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858592200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:19:05,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:19:05,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:19:05,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924600236] [2022-11-22 00:19:05,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:19:05,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:19:05,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:19:05,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:19:05,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:19:05,076 INFO L87 Difference]: Start difference. First operand 791 states and 1290 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-22 00:19:05,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:19:05,309 INFO L93 Difference]: Finished difference Result 1327 states and 2172 transitions. [2022-11-22 00:19:05,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:19:05,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 67 [2022-11-22 00:19:05,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:19:05,318 INFO L225 Difference]: With dead ends: 1327 [2022-11-22 00:19:05,319 INFO L226 Difference]: Without dead ends: 861 [2022-11-22 00:19:05,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:19:05,327 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 41 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:19:05,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 2193 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:19:05,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2022-11-22 00:19:05,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 803. [2022-11-22 00:19:05,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 567 states have (on average 1.6261022927689595) internal successors, (922), 602 states have internal predecessors, (922), 188 states have call successors, (188), 42 states have call predecessors, (188), 47 states have return successors, (195), 183 states have call predecessors, (195), 183 states have call successors, (195) [2022-11-22 00:19:05,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1305 transitions. [2022-11-22 00:19:05,415 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1305 transitions. Word has length 67 [2022-11-22 00:19:05,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:19:05,416 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1305 transitions. [2022-11-22 00:19:05,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-22 00:19:05,416 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1305 transitions. [2022-11-22 00:19:05,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-22 00:19:05,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:19:05,422 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:19:05,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:19:05,423 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:19:05,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:19:05,432 INFO L85 PathProgramCache]: Analyzing trace with hash 520511617, now seen corresponding path program 1 times [2022-11-22 00:19:05,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:19:05,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639715646] [2022-11-22 00:19:05,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:19:05,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:19:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:19:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 00:19:05,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:19:05,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639715646] [2022-11-22 00:19:05,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639715646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:19:05,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:19:05,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 00:19:05,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584463337] [2022-11-22 00:19:05,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:19:05,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:19:05,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:19:05,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:19:05,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:19:05,967 INFO L87 Difference]: Start difference. First operand 803 states and 1305 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-22 00:19:08,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:19:08,345 INFO L93 Difference]: Finished difference Result 1822 states and 2958 transitions. [2022-11-22 00:19:08,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 00:19:08,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 71 [2022-11-22 00:19:08,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:19:08,357 INFO L225 Difference]: With dead ends: 1822 [2022-11-22 00:19:08,357 INFO L226 Difference]: Without dead ends: 1248 [2022-11-22 00:19:08,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-22 00:19:08,368 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 1588 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 2205 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 2839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 2205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:19:08,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1735 Valid, 1368 Invalid, 2839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 2205 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-22 00:19:08,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2022-11-22 00:19:08,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1154. [2022-11-22 00:19:08,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 803 states have (on average 1.5815691158156913) internal successors, (1270), 855 states have internal predecessors, (1270), 276 states have call successors, (276), 66 states have call predecessors, (276), 74 states have return successors, (292), 269 states have call predecessors, (292), 271 states have call successors, (292) [2022-11-22 00:19:08,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1838 transitions. [2022-11-22 00:19:08,478 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1838 transitions. Word has length 71 [2022-11-22 00:19:08,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:19:08,479 INFO L495 AbstractCegarLoop]: Abstraction has 1154 states and 1838 transitions. [2022-11-22 00:19:08,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-22 00:19:08,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1838 transitions. [2022-11-22 00:19:08,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-22 00:19:08,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:19:08,482 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:19:08,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:19:08,482 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:19:08,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:19:08,483 INFO L85 PathProgramCache]: Analyzing trace with hash 565361145, now seen corresponding path program 1 times [2022-11-22 00:19:08,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:19:08,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907024497] [2022-11-22 00:19:08,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:19:08,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:19:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:19:08,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 00:19:08,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:19:08,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907024497] [2022-11-22 00:19:08,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907024497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:19:08,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:19:08,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:19:08,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298824726] [2022-11-22 00:19:08,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:19:08,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:19:08,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:19:08,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:19:08,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:19:08,675 INFO L87 Difference]: Start difference. First operand 1154 states and 1838 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-22 00:19:08,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:19:08,963 INFO L93 Difference]: Finished difference Result 2223 states and 3599 transitions. [2022-11-22 00:19:08,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:19:08,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 74 [2022-11-22 00:19:08,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:19:08,972 INFO L225 Difference]: With dead ends: 2223 [2022-11-22 00:19:08,972 INFO L226 Difference]: Without dead ends: 1154 [2022-11-22 00:19:08,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:19:08,978 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 210 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:19:08,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 1419 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:19:08,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-11-22 00:19:09,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1154. [2022-11-22 00:19:09,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 803 states have (on average 1.5417185554171855) internal successors, (1238), 855 states have internal predecessors, (1238), 276 states have call successors, (276), 66 states have call predecessors, (276), 74 states have return successors, (292), 269 states have call predecessors, (292), 271 states have call successors, (292) [2022-11-22 00:19:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1806 transitions. [2022-11-22 00:19:09,059 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1806 transitions. Word has length 74 [2022-11-22 00:19:09,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:19:09,060 INFO L495 AbstractCegarLoop]: Abstraction has 1154 states and 1806 transitions. [2022-11-22 00:19:09,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-22 00:19:09,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1806 transitions. [2022-11-22 00:19:09,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-22 00:19:09,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:19:09,062 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:19:09,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:19:09,063 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:19:09,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:19:09,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1229553803, now seen corresponding path program 1 times [2022-11-22 00:19:09,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:19:09,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747932491] [2022-11-22 00:19:09,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:19:09,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:19:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:19:09,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 00:19:09,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:19:09,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747932491] [2022-11-22 00:19:09,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747932491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:19:09,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:19:09,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:19:09,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742632092] [2022-11-22 00:19:09,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:19:09,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 00:19:09,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:19:09,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 00:19:09,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:19:09,457 INFO L87 Difference]: Start difference. First operand 1154 states and 1806 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-22 00:19:11,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:19:11,634 INFO L93 Difference]: Finished difference Result 2210 states and 3477 transitions. [2022-11-22 00:19:11,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 00:19:11,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 76 [2022-11-22 00:19:11,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:19:11,643 INFO L225 Difference]: With dead ends: 2210 [2022-11-22 00:19:11,643 INFO L226 Difference]: Without dead ends: 1342 [2022-11-22 00:19:11,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-22 00:19:11,649 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 923 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 2683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:19:11,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1514 Invalid, 2683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-22 00:19:11,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2022-11-22 00:19:11,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1181. [2022-11-22 00:19:11,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 821 states have (on average 1.5347137637028014) internal successors, (1260), 877 states have internal predecessors, (1260), 277 states have call successors, (277), 71 states have call predecessors, (277), 82 states have return successors, (303), 269 states have call predecessors, (303), 272 states have call successors, (303) [2022-11-22 00:19:11,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1840 transitions. [2022-11-22 00:19:11,760 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1840 transitions. Word has length 76 [2022-11-22 00:19:11,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:19:11,762 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1840 transitions. [2022-11-22 00:19:11,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-22 00:19:11,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1840 transitions. [2022-11-22 00:19:11,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-22 00:19:11,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:19:11,766 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:19:11,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:19:11,766 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:19:11,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:19:11,767 INFO L85 PathProgramCache]: Analyzing trace with hash 611238602, now seen corresponding path program 1 times [2022-11-22 00:19:11,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:19:11,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336742852] [2022-11-22 00:19:11,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:19:11,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:19:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:19:12,061 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 00:19:12,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:19:12,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336742852] [2022-11-22 00:19:12,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336742852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:19:12,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:19:12,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 00:19:12,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796451013] [2022-11-22 00:19:12,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:19:12,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:19:12,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:19:12,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:19:12,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:19:12,064 INFO L87 Difference]: Start difference. First operand 1181 states and 1840 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-22 00:19:12,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:19:12,621 INFO L93 Difference]: Finished difference Result 1253 states and 1953 transitions. [2022-11-22 00:19:12,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:19:12,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 80 [2022-11-22 00:19:12,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:19:12,630 INFO L225 Difference]: With dead ends: 1253 [2022-11-22 00:19:12,630 INFO L226 Difference]: Without dead ends: 1238 [2022-11-22 00:19:12,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:19:12,633 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 640 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:19:12,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 1356 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 00:19:12,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2022-11-22 00:19:12,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1185. [2022-11-22 00:19:12,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 825 states have (on average 1.5321212121212122) internal successors, (1264), 881 states have internal predecessors, (1264), 277 states have call successors, (277), 71 states have call predecessors, (277), 82 states have return successors, (303), 269 states have call predecessors, (303), 272 states have call successors, (303) [2022-11-22 00:19:12,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1844 transitions. [2022-11-22 00:19:12,779 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1844 transitions. Word has length 80 [2022-11-22 00:19:12,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:19:12,780 INFO L495 AbstractCegarLoop]: Abstraction has 1185 states and 1844 transitions. [2022-11-22 00:19:12,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-22 00:19:12,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1844 transitions. [2022-11-22 00:19:12,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-22 00:19:12,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:19:12,788 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 00:19:12,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:19:12,788 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:19:12,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:19:12,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1340789007, now seen corresponding path program 1 times [2022-11-22 00:19:12,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:19:12,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367755529] [2022-11-22 00:19:12,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:19:12,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:19:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:19:13,128 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 00:19:13,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:19:13,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367755529] [2022-11-22 00:19:13,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367755529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:19:13,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:19:13,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:19:13,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351416646] [2022-11-22 00:19:13,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:19:13,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 00:19:13,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:19:13,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 00:19:13,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:19:13,131 INFO L87 Difference]: Start difference. First operand 1185 states and 1844 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-22 00:19:13,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:19:13,455 INFO L93 Difference]: Finished difference Result 1204 states and 1868 transitions. [2022-11-22 00:19:13,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 00:19:13,456 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) Word has length 85 [2022-11-22 00:19:13,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:19:13,469 INFO L225 Difference]: With dead ends: 1204 [2022-11-22 00:19:13,471 INFO L226 Difference]: Without dead ends: 1189 [2022-11-22 00:19:13,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-22 00:19:13,473 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 257 mSDsluCounter, 2234 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 2736 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:19:13,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 2736 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:19:13,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2022-11-22 00:19:13,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1185. [2022-11-22 00:19:13,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 825 states have (on average 1.5284848484848486) internal successors, (1261), 881 states have internal predecessors, (1261), 277 states have call successors, (277), 71 states have call predecessors, (277), 82 states have return successors, (303), 269 states have call predecessors, (303), 272 states have call successors, (303) [2022-11-22 00:19:13,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1841 transitions. [2022-11-22 00:19:13,595 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1841 transitions. Word has length 85 [2022-11-22 00:19:13,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:19:13,596 INFO L495 AbstractCegarLoop]: Abstraction has 1185 states and 1841 transitions. [2022-11-22 00:19:13,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-22 00:19:13,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1841 transitions. [2022-11-22 00:19:13,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-22 00:19:13,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:19:13,598 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-22 00:19:13,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:19:13,599 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:19:13,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:19:13,599 INFO L85 PathProgramCache]: Analyzing trace with hash 280371306, now seen corresponding path program 1 times [2022-11-22 00:19:13,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:19:13,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283107442] [2022-11-22 00:19:13,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:19:13,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:19:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:19:14,674 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-22 00:19:14,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:19:14,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283107442] [2022-11-22 00:19:14,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283107442] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:19:14,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58663469] [2022-11-22 00:19:14,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:19:14,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:19:14,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4b59d10-a10a-4cde-9635-cda67df9ba50/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:19:14,678 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4b59d10-a10a-4cde-9635-cda67df9ba50/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:19:14,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4b59d10-a10a-4cde-9635-cda67df9ba50/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:19:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:19:15,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 1809 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-22 00:19:15,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:19:17,498 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 00:19:17,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:19:20,957 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 00:19:20,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58663469] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:19:20,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1497499956] [2022-11-22 00:19:20,984 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2022-11-22 00:19:20,984 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:19:20,989 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:19:20,994 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:19:20,995 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:19:27,936 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 584 for LOIs [2022-11-22 00:20:28,379 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 584 for LOIs [2022-11-22 00:20:30,838 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 88 for LOIs [2022-11-22 00:20:31,411 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 31 for LOIs [2022-11-22 00:20:31,423 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 591 for LOIs [2022-11-22 00:20:35,027 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 442 for LOIs [2022-11-22 00:20:35,280 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 84 for LOIs [2022-11-22 00:20:35,395 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 98 for LOIs [2022-11-22 00:20:35,415 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 554 for LOIs [2022-11-22 00:20:38,037 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 829 for LOIs [2022-11-22 00:21:58,879 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 656 for LOIs [2022-11-22 00:21:59,446 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:22:19,002 WARN L233 SmtUtils]: Spent 10.78s on a formula simplification. DAG size of input: 656 DAG size of output: 519 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:22:30,703 WARN L233 SmtUtils]: Spent 11.25s on a formula simplification. DAG size of input: 696 DAG size of output: 533 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:22:39,134 WARN L233 SmtUtils]: Spent 8.06s on a formula simplification. DAG size of input: 673 DAG size of output: 611 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:22:47,491 WARN L233 SmtUtils]: Spent 7.98s on a formula simplification. DAG size of input: 673 DAG size of output: 611 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:23:08,169 WARN L233 SmtUtils]: Spent 20.09s on a formula simplification. DAG size of input: 829 DAG size of output: 681 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:23:30,449 WARN L233 SmtUtils]: Spent 19.99s on a formula simplification. DAG size of input: 1034 DAG size of output: 822 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:24:33,994 WARN L233 SmtUtils]: Spent 10.63s on a formula simplification. DAG size of input: 514 DAG size of output: 469 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:24:45,241 WARN L233 SmtUtils]: Spent 10.57s on a formula simplification. DAG size of input: 516 DAG size of output: 473 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:24:56,964 WARN L233 SmtUtils]: Spent 10.99s on a formula simplification. DAG size of input: 519 DAG size of output: 476 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:25:07,130 WARN L233 SmtUtils]: Spent 8.76s on a formula simplification. DAG size of input: 442 DAG size of output: 427 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:25:16,870 WARN L233 SmtUtils]: Spent 9.05s on a formula simplification. DAG size of input: 446 DAG size of output: 431 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:25:29,439 WARN L233 SmtUtils]: Spent 11.69s on a formula simplification. DAG size of input: 528 DAG size of output: 469 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:25:42,807 WARN L233 SmtUtils]: Spent 12.51s on a formula simplification. DAG size of input: 528 DAG size of output: 489 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:25:56,116 WARN L233 SmtUtils]: Spent 12.41s on a formula simplification. DAG size of input: 531 DAG size of output: 478 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:26:08,017 WARN L233 SmtUtils]: Spent 11.08s on a formula simplification. DAG size of input: 534 DAG size of output: 478 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:26:20,355 WARN L233 SmtUtils]: Spent 11.39s on a formula simplification. DAG size of input: 540 DAG size of output: 484 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:26:32,818 WARN L233 SmtUtils]: Spent 11.56s on a formula simplification. DAG size of input: 556 DAG size of output: 494 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:26:32,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1497499956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:32,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:26:32,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [11, 12, 12] total 84 [2022-11-22 00:26:32,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068608691] [2022-11-22 00:26:32,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:32,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-22 00:26:32,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:32,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-22 00:26:32,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=568, Invalid=6404, Unknown=0, NotChecked=0, Total=6972 [2022-11-22 00:26:32,827 INFO L87 Difference]: Start difference. First operand 1185 states and 1841 transitions. Second operand has 58 states, 47 states have (on average 1.148936170212766) internal successors, (54), 37 states have internal predecessors, (54), 16 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (16), 16 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-22 00:26:43,514 WARN L233 SmtUtils]: Spent 9.86s on a formula simplification. DAG size of input: 640 DAG size of output: 594 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:26:53,846 WARN L233 SmtUtils]: Spent 9.89s on a formula simplification. DAG size of input: 652 DAG size of output: 601 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:27:01,043 WARN L233 SmtUtils]: Spent 6.52s on a formula simplification. DAG size of input: 744 DAG size of output: 660 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:27:09,785 WARN L233 SmtUtils]: Spent 7.59s on a formula simplification. DAG size of input: 603 DAG size of output: 557 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:27:18,025 WARN L233 SmtUtils]: Spent 7.81s on a formula simplification. DAG size of input: 615 DAG size of output: 564 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:27:30,177 WARN L233 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 595 DAG size of output: 587 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:27:36,344 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 607 DAG size of output: 599 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:27:43,349 WARN L233 SmtUtils]: Spent 6.45s on a formula simplification. DAG size of input: 649 DAG size of output: 622 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:28:26,809 WARN L233 SmtUtils]: Spent 8.33s on a formula simplification. DAG size of input: 433 DAG size of output: 430 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:28:35,254 WARN L233 SmtUtils]: Spent 8.19s on a formula simplification. DAG size of input: 446 DAG size of output: 443 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:29:41,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:29:41,700 INFO L93 Difference]: Finished difference Result 3010 states and 4710 transitions. [2022-11-22 00:29:41,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-22 00:29:41,701 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 47 states have (on average 1.148936170212766) internal successors, (54), 37 states have internal predecessors, (54), 16 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (16), 16 states have call predecessors, (16), 15 states have call successors, (16) Word has length 92 [2022-11-22 00:29:41,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:29:41,724 INFO L225 Difference]: With dead ends: 3010 [2022-11-22 00:29:41,724 INFO L226 Difference]: Without dead ends: 1848 [2022-11-22 00:29:41,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 202 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3229 ImplicationChecksByTransitivity, 358.7s TimeCoverageRelationStatistics Valid=710, Invalid=8410, Unknown=0, NotChecked=0, Total=9120 [2022-11-22 00:29:41,732 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 880 mSDsluCounter, 10399 mSDsCounter, 0 mSdLazyCounter, 22778 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 99.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 11159 SdHoareTripleChecker+Invalid, 22893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 22778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 102.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:29:41,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 11159 Invalid, 22893 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [115 Valid, 22778 Invalid, 0 Unknown, 0 Unchecked, 102.6s Time] [2022-11-22 00:29:41,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2022-11-22 00:29:42,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1712. [2022-11-22 00:29:42,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1712 states, 1215 states have (on average 1.5209876543209877) internal successors, (1848), 1287 states have internal predecessors, (1848), 381 states have call successors, (381), 99 states have call predecessors, (381), 115 states have return successors, (416), 374 states have call predecessors, (416), 376 states have call successors, (416) [2022-11-22 00:29:42,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 2645 transitions. [2022-11-22 00:29:42,350 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 2645 transitions. Word has length 92 [2022-11-22 00:29:42,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:29:42,351 INFO L495 AbstractCegarLoop]: Abstraction has 1712 states and 2645 transitions. [2022-11-22 00:29:42,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 47 states have (on average 1.148936170212766) internal successors, (54), 37 states have internal predecessors, (54), 16 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (16), 16 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-22 00:29:42,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 2645 transitions. [2022-11-22 00:29:42,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-22 00:29:42,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:29:42,354 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-22 00:29:42,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4b59d10-a10a-4cde-9635-cda67df9ba50/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 00:29:42,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4b59d10-a10a-4cde-9635-cda67df9ba50/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:29:42,563 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:29:42,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:29:42,564 INFO L85 PathProgramCache]: Analyzing trace with hash 231179816, now seen corresponding path program 1 times [2022-11-22 00:29:42,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:29:42,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064041657] [2022-11-22 00:29:42,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:29:42,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:29:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:29:42,712 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 00:29:42,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:29:42,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064041657] [2022-11-22 00:29:42,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064041657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:29:42,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:29:42,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:29:42,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083143506] [2022-11-22 00:29:42,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:29:42,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:29:42,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:29:42,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:29:42,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:29:42,717 INFO L87 Difference]: Start difference. First operand 1712 states and 2645 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-22 00:29:44,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:29:44,201 INFO L93 Difference]: Finished difference Result 4825 states and 7555 transitions. [2022-11-22 00:29:44,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:29:44,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 93 [2022-11-22 00:29:44,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:29:44,221 INFO L225 Difference]: With dead ends: 4825 [2022-11-22 00:29:44,221 INFO L226 Difference]: Without dead ends: 3260 [2022-11-22 00:29:44,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:29:44,229 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 499 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:29:44,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 1473 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:29:44,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2022-11-22 00:29:45,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 3257. [2022-11-22 00:29:45,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3257 states, 2313 states have (on average 1.5296152183311715) internal successors, (3538), 2451 states have internal predecessors, (3538), 726 states have call successors, (726), 185 states have call predecessors, (726), 217 states have return successors, (810), 718 states have call predecessors, (810), 721 states have call successors, (810) [2022-11-22 00:29:45,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3257 states to 3257 states and 5074 transitions. [2022-11-22 00:29:45,302 INFO L78 Accepts]: Start accepts. Automaton has 3257 states and 5074 transitions. Word has length 93 [2022-11-22 00:29:45,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:29:45,302 INFO L495 AbstractCegarLoop]: Abstraction has 3257 states and 5074 transitions. [2022-11-22 00:29:45,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-22 00:29:45,303 INFO L276 IsEmpty]: Start isEmpty. Operand 3257 states and 5074 transitions. [2022-11-22 00:29:45,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-22 00:29:45,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:29:45,305 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-22 00:29:45,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 00:29:45,306 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:29:45,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:29:45,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1937125490, now seen corresponding path program 1 times [2022-11-22 00:29:45,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:29:45,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345341806] [2022-11-22 00:29:45,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:29:45,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:29:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:29:46,277 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-22 00:29:46,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:29:46,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345341806] [2022-11-22 00:29:46,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345341806] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:29:46,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706247783] [2022-11-22 00:29:46,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:29:46,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:29:46,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4b59d10-a10a-4cde-9635-cda67df9ba50/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:29:46,279 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4b59d10-a10a-4cde-9635-cda67df9ba50/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:29:46,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4b59d10-a10a-4cde-9635-cda67df9ba50/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 00:29:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:29:46,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 1812 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-22 00:29:46,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:29:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 00:29:48,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:29:51,379 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 00:29:51,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706247783] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:29:51,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [891818443] [2022-11-22 00:29:51,383 INFO L159 IcfgInterpreter]: Started Sifa with 84 locations of interest [2022-11-22 00:29:51,383 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:29:51,384 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:29:51,384 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:29:51,384 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:29:56,439 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 584 for LOIs [2022-11-22 00:30:53,434 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 584 for LOIs [2022-11-22 00:30:55,609 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 88 for LOIs [2022-11-22 00:30:56,141 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 28 for LOIs [2022-11-22 00:30:56,152 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 591 for LOIs [2022-11-22 00:30:59,759 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 436 for LOIs [2022-11-22 00:31:00,014 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 84 for LOIs [2022-11-22 00:31:00,124 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 98 for LOIs [2022-11-22 00:31:00,143 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 554 for LOIs [2022-11-22 00:31:02,752 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 829 for LOIs