./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI --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 8333bf118d61dc3e3ddedc658c9d6fef28fa288c9b6abdc361c7a0f5f6e109b7 --- 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-5e519f3 [2022-11-03 01:58:21,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:58:21,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:58:21,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:58:21,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:58:21,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:58:21,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:58:21,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:58:21,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:58:21,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:58:21,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:58:21,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:58:21,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:58:21,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:58:21,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:58:21,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:58:21,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:58:21,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:58:21,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:58:21,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:58:21,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:58:21,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:58:21,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:58:21,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:58:21,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:58:21,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:58:21,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:58:21,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:58:21,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:58:21,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:58:21,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:58:21,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:58:21,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:58:21,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:58:21,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:58:21,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:58:21,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:58:21,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:58:21,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:58:21,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:58:21,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:58:21,897 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 01:58:21,936 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:58:21,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:58:21,944 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:58:21,945 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:58:21,945 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:58:21,946 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:58:21,946 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:58:21,946 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:58:21,946 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:58:21,947 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:58:21,948 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:58:21,948 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:58:21,948 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:58:21,948 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:58:21,949 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:58:21,949 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:58:21,949 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:58:21,949 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:58:21,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:58:21,950 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:58:21,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:58:21,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:58:21,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:58:21,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:58:21,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:58:21,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:58:21,952 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:58:21,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:58:21,952 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:58:21,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:58:21,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:58:21,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:58:21,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:58:21,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:58:21,954 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:58:21,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:58:21,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:58:21,955 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:58:21,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:58:21,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:58:21,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:58:21,956 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_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8333bf118d61dc3e3ddedc658c9d6fef28fa288c9b6abdc361c7a0f5f6e109b7 [2022-11-03 01:58:22,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:58:22,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:58:22,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:58:22,276 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:58:22,278 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:58:22,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c [2022-11-03 01:58:22,376 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/data/addd0cda4/d7e2c4e019ab4f2d9f78bb0899012ecb/FLAG9ebc54663 [2022-11-03 01:58:23,018 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:58:23,019 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c [2022-11-03 01:58:23,041 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/data/addd0cda4/d7e2c4e019ab4f2d9f78bb0899012ecb/FLAG9ebc54663 [2022-11-03 01:58:23,332 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/data/addd0cda4/d7e2c4e019ab4f2d9f78bb0899012ecb [2022-11-03 01:58:23,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:58:23,341 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:58:23,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:58:23,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:58:23,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:58:23,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:58:23" (1/1) ... [2022-11-03 01:58:23,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41bf4133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:23, skipping insertion in model container [2022-11-03 01:58:23,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:58:23" (1/1) ... [2022-11-03 01:58:23,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:58:23,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:58:24,077 WARN L230 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_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c[75121,75134] [2022-11-03 01:58:24,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:58:24,095 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:58:24,229 WARN L230 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_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c[75121,75134] [2022-11-03 01:58:24,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:58:24,256 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:58:24,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24 WrapperNode [2022-11-03 01:58:24,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:58:24,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:58:24,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:58:24,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:58:24,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24" (1/1) ... [2022-11-03 01:58:24,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24" (1/1) ... [2022-11-03 01:58:24,362 INFO L138 Inliner]: procedures = 96, calls = 359, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 966 [2022-11-03 01:58:24,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:58:24,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:58:24,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:58:24,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:58:24,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24" (1/1) ... [2022-11-03 01:58:24,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24" (1/1) ... [2022-11-03 01:58:24,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24" (1/1) ... [2022-11-03 01:58:24,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24" (1/1) ... [2022-11-03 01:58:24,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24" (1/1) ... [2022-11-03 01:58:24,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24" (1/1) ... [2022-11-03 01:58:24,423 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24" (1/1) ... [2022-11-03 01:58:24,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24" (1/1) ... [2022-11-03 01:58:24,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:58:24,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:58:24,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:58:24,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:58:24,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24" (1/1) ... [2022-11-03 01:58:24,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:58:24,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:24,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:58:24,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:58:24,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:58:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-11-03 01:58:24,577 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-11-03 01:58:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-11-03 01:58:24,577 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-11-03 01:58:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-03 01:58:24,578 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-03 01:58:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-03 01:58:24,578 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-03 01:58:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-11-03 01:58:24,578 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-11-03 01:58:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-03 01:58:24,579 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-03 01:58:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-11-03 01:58:24,579 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-11-03 01:58:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-03 01:58:24,579 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-03 01:58:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-03 01:58:24,580 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-03 01:58:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-03 01:58:24,580 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-03 01:58:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-03 01:58:24,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-03 01:58:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-03 01:58:24,581 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-03 01:58:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-03 01:58:24,581 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-03 01:58:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-03 01:58:24,581 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-03 01:58:24,582 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-03 01:58:24,583 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-03 01:58:24,584 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-11-03 01:58:24,584 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-11-03 01:58:24,584 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-03 01:58:24,584 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-03 01:58:24,584 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-11-03 01:58:24,584 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-11-03 01:58:24,585 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-03 01:58:24,585 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-03 01:58:24,585 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-03 01:58:24,585 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-03 01:58:24,585 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-03 01:58:24,586 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-03 01:58:24,586 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-03 01:58:24,587 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-03 01:58:24,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:58:24,588 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-03 01:58:24,589 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-03 01:58:24,589 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-03 01:58:24,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-03 01:58:24,590 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-03 01:58:24,591 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-03 01:58:24,591 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-03 01:58:24,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-03 01:58:24,592 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-11-03 01:58:24,592 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-11-03 01:58:24,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:58:24,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:58:24,592 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-03 01:58:24,593 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-03 01:58:24,593 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-11-03 01:58:24,593 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-11-03 01:58:24,879 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:58:24,882 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:58:26,228 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:58:27,062 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:58:27,063 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:58:27,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:58:27 BoogieIcfgContainer [2022-11-03 01:58:27,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:58:27,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:58:27,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:58:27,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:58:27,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:58:23" (1/3) ... [2022-11-03 01:58:27,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e3dc70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:58:27, skipping insertion in model container [2022-11-03 01:58:27,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24" (2/3) ... [2022-11-03 01:58:27,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e3dc70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:58:27, skipping insertion in model container [2022-11-03 01:58:27,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:58:27" (3/3) ... [2022-11-03 01:58:27,076 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product24.cil.c [2022-11-03 01:58:27,094 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:58:27,095 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:58:27,154 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:58:27,161 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;@6a3e70e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:58:27,161 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:58:27,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 434 states, 288 states have (on average 1.5555555555555556) internal successors, (448), 308 states have internal predecessors, (448), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) [2022-11-03 01:58:27,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-03 01:58:27,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:27,179 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:27,180 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:27,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:27,185 INFO L85 PathProgramCache]: Analyzing trace with hash -951121915, now seen corresponding path program 1 times [2022-11-03 01:58:27,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:27,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824273668] [2022-11-03 01:58:27,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:27,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:28,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:58:28,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:28,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824273668] [2022-11-03 01:58:28,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824273668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:28,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:28,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:58:28,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352021016] [2022-11-03 01:58:28,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:28,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:58:28,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:28,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:58:28,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:58:28,128 INFO L87 Difference]: Start difference. First operand has 434 states, 288 states have (on average 1.5555555555555556) internal successors, (448), 308 states have internal predecessors, (448), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-03 01:58:29,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:29,378 INFO L93 Difference]: Finished difference Result 1240 states and 1966 transitions. [2022-11-03 01:58:29,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:58:29,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 49 [2022-11-03 01:58:29,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:29,413 INFO L225 Difference]: With dead ends: 1240 [2022-11-03 01:58:29,413 INFO L226 Difference]: Without dead ends: 808 [2022-11-03 01:58:29,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:58:29,425 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 576 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 3252 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:29,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 3252 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:58:29,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-11-03 01:58:29,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 800. [2022-11-03 01:58:29,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 533 states have (on average 1.4859287054409005) internal successors, (792), 567 states have internal predecessors, (792), 214 states have call successors, (214), 55 states have call predecessors, (214), 52 states have return successors, (217), 204 states have call predecessors, (217), 210 states have call successors, (217) [2022-11-03 01:58:29,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1223 transitions. [2022-11-03 01:58:29,571 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1223 transitions. Word has length 49 [2022-11-03 01:58:29,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:29,572 INFO L495 AbstractCegarLoop]: Abstraction has 800 states and 1223 transitions. [2022-11-03 01:58:29,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-03 01:58:29,574 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1223 transitions. [2022-11-03 01:58:29,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-03 01:58:29,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:29,578 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:29,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:58:29,579 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:29,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:29,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1102540507, now seen corresponding path program 1 times [2022-11-03 01:58:29,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:29,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562464116] [2022-11-03 01:58:29,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:29,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:29,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:58:29,994 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:29,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562464116] [2022-11-03 01:58:29,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562464116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:29,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:29,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:58:29,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460129580] [2022-11-03 01:58:29,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:29,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:29,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:29,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:29,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:29,998 INFO L87 Difference]: Start difference. First operand 800 states and 1223 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 01:58:30,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:30,357 INFO L93 Difference]: Finished difference Result 2370 states and 3657 transitions. [2022-11-03 01:58:30,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:30,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 50 [2022-11-03 01:58:30,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:30,371 INFO L225 Difference]: With dead ends: 2370 [2022-11-03 01:58:30,372 INFO L226 Difference]: Without dead ends: 1583 [2022-11-03 01:58:30,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:30,378 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 633 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:30,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1384 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:58:30,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2022-11-03 01:58:30,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1511. [2022-11-03 01:58:30,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1035 states have (on average 1.4985507246376812) internal successors, (1551), 1087 states have internal predecessors, (1551), 381 states have call successors, (381), 99 states have call predecessors, (381), 94 states have return successors, (401), 352 states have call predecessors, (401), 375 states have call successors, (401) [2022-11-03 01:58:30,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 2333 transitions. [2022-11-03 01:58:30,489 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 2333 transitions. Word has length 50 [2022-11-03 01:58:30,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:30,490 INFO L495 AbstractCegarLoop]: Abstraction has 1511 states and 2333 transitions. [2022-11-03 01:58:30,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 01:58:30,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 2333 transitions. [2022-11-03 01:58:30,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-03 01:58:30,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:30,497 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:30,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:58:30,498 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:30,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:30,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1387708293, now seen corresponding path program 1 times [2022-11-03 01:58:30,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:30,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438357863] [2022-11-03 01:58:30,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:30,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:30,968 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:58:30,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:30,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438357863] [2022-11-03 01:58:30,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438357863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:30,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:30,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:58:30,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917662748] [2022-11-03 01:58:30,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:30,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:58:30,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:30,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:58:30,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:58:30,971 INFO L87 Difference]: Start difference. First operand 1511 states and 2333 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-03 01:58:32,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:32,144 INFO L93 Difference]: Finished difference Result 3931 states and 6280 transitions. [2022-11-03 01:58:32,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:58:32,145 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 94 [2022-11-03 01:58:32,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:32,182 INFO L225 Difference]: With dead ends: 3931 [2022-11-03 01:58:32,182 INFO L226 Difference]: Without dead ends: 2432 [2022-11-03 01:58:32,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:58:32,194 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 710 mSDsluCounter, 2943 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 3595 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:32,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 3595 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:58:32,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2022-11-03 01:58:32,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 2218. [2022-11-03 01:58:32,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2218 states, 1523 states have (on average 1.4917925147734734) internal successors, (2272), 1607 states have internal predecessors, (2272), 554 states have call successors, (554), 147 states have call predecessors, (554), 140 states have return successors, (623), 506 states have call predecessors, (623), 546 states have call successors, (623) [2022-11-03 01:58:32,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 3449 transitions. [2022-11-03 01:58:32,363 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 3449 transitions. Word has length 94 [2022-11-03 01:58:32,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:32,364 INFO L495 AbstractCegarLoop]: Abstraction has 2218 states and 3449 transitions. [2022-11-03 01:58:32,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-03 01:58:32,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 3449 transitions. [2022-11-03 01:58:32,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-03 01:58:32,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:32,369 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:32,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:58:32,370 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:32,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:32,371 INFO L85 PathProgramCache]: Analyzing trace with hash -2107044805, now seen corresponding path program 1 times [2022-11-03 01:58:32,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:32,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389202753] [2022-11-03 01:58:32,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:32,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 01:58:32,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:32,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389202753] [2022-11-03 01:58:32,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389202753] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:58:32,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346782968] [2022-11-03 01:58:32,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:32,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:32,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:32,792 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:32,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:58:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:33,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 1810 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:58:33,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:33,397 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 01:58:33,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:58:33,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346782968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:33,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:58:33,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-03 01:58:33,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666152329] [2022-11-03 01:58:33,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:33,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:33,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:33,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:33,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:58:33,411 INFO L87 Difference]: Start difference. First operand 2218 states and 3449 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 01:58:33,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:33,832 INFO L93 Difference]: Finished difference Result 6364 states and 10153 transitions. [2022-11-03 01:58:33,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:33,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 92 [2022-11-03 01:58:33,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:33,874 INFO L225 Difference]: With dead ends: 6364 [2022-11-03 01:58:33,875 INFO L226 Difference]: Without dead ends: 4158 [2022-11-03 01:58:33,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:58:33,901 INFO L413 NwaCegarLoop]: 1128 mSDtfsCounter, 596 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:33,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 1666 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:58:33,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4158 states. [2022-11-03 01:58:34,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4158 to 4040. [2022-11-03 01:58:34,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4040 states, 2789 states have (on average 1.5030476873431338) internal successors, (4192), 2959 states have internal predecessors, (4192), 987 states have call successors, (987), 264 states have call predecessors, (987), 263 states have return successors, (1156), 902 states have call predecessors, (1156), 979 states have call successors, (1156) [2022-11-03 01:58:34,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4040 states to 4040 states and 6335 transitions. [2022-11-03 01:58:34,237 INFO L78 Accepts]: Start accepts. Automaton has 4040 states and 6335 transitions. Word has length 92 [2022-11-03 01:58:34,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:34,238 INFO L495 AbstractCegarLoop]: Abstraction has 4040 states and 6335 transitions. [2022-11-03 01:58:34,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 01:58:34,238 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 6335 transitions. [2022-11-03 01:58:34,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-03 01:58:34,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:34,243 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:34,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:34,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:34,452 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:34,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:34,453 INFO L85 PathProgramCache]: Analyzing trace with hash -417977892, now seen corresponding path program 1 times [2022-11-03 01:58:34,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:34,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480757275] [2022-11-03 01:58:34,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:34,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:34,721 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 01:58:34,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:34,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480757275] [2022-11-03 01:58:34,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480757275] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:58:34,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877796310] [2022-11-03 01:58:34,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:34,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:34,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:34,724 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:34,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:58:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:35,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:58:35,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:35,231 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 01:58:35,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:58:35,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877796310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:35,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:58:35,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-03 01:58:35,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705477917] [2022-11-03 01:58:35,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:35,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:35,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:35,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:35,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:58:35,233 INFO L87 Difference]: Start difference. First operand 4040 states and 6335 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 01:58:35,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:35,716 INFO L93 Difference]: Finished difference Result 9064 states and 14368 transitions. [2022-11-03 01:58:35,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:35,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 94 [2022-11-03 01:58:35,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:35,760 INFO L225 Difference]: With dead ends: 9064 [2022-11-03 01:58:35,761 INFO L226 Difference]: Without dead ends: 5036 [2022-11-03 01:58:35,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:58:35,791 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 594 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:35,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 1364 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:58:35,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5036 states. [2022-11-03 01:58:36,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5036 to 4972. [2022-11-03 01:58:36,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4972 states, 3443 states have (on average 1.5117629973860005) internal successors, (5205), 3656 states have internal predecessors, (5205), 1205 states have call successors, (1205), 321 states have call predecessors, (1205), 323 states have return successors, (1411), 1103 states have call predecessors, (1411), 1197 states have call successors, (1411) [2022-11-03 01:58:36,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4972 states to 4972 states and 7821 transitions. [2022-11-03 01:58:36,218 INFO L78 Accepts]: Start accepts. Automaton has 4972 states and 7821 transitions. Word has length 94 [2022-11-03 01:58:36,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:36,219 INFO L495 AbstractCegarLoop]: Abstraction has 4972 states and 7821 transitions. [2022-11-03 01:58:36,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 01:58:36,219 INFO L276 IsEmpty]: Start isEmpty. Operand 4972 states and 7821 transitions. [2022-11-03 01:58:36,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-03 01:58:36,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:36,225 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:36,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:36,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:36,441 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:36,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:36,441 INFO L85 PathProgramCache]: Analyzing trace with hash -11691783, now seen corresponding path program 1 times [2022-11-03 01:58:36,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:36,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255627541] [2022-11-03 01:58:36,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:36,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:37,266 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:58:37,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:37,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255627541] [2022-11-03 01:58:37,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255627541] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:58:37,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303064268] [2022-11-03 01:58:37,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:37,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:37,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:37,269 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:37,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:58:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:37,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 1837 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 01:58:37,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:37,797 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 01:58:37,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:58:37,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303064268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:37,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:58:37,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2022-11-03 01:58:37,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929390376] [2022-11-03 01:58:37,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:37,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:58:37,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:37,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:58:37,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:58:37,802 INFO L87 Difference]: Start difference. First operand 4972 states and 7821 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 01:58:38,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:38,355 INFO L93 Difference]: Finished difference Result 10962 states and 17214 transitions. [2022-11-03 01:58:38,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:58:38,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 99 [2022-11-03 01:58:38,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:38,395 INFO L225 Difference]: With dead ends: 10962 [2022-11-03 01:58:38,395 INFO L226 Difference]: Without dead ends: 6002 [2022-11-03 01:58:38,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:58:38,426 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 441 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:38,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 1868 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:58:38,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2022-11-03 01:58:38,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 5958. [2022-11-03 01:58:38,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5958 states, 4096 states have (on average 1.472900390625) internal successors, (6033), 4313 states have internal predecessors, (6033), 1412 states have call successors, (1412), 426 states have call predecessors, (1412), 449 states have return successors, (1751), 1324 states have call predecessors, (1751), 1401 states have call successors, (1751) [2022-11-03 01:58:38,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5958 states to 5958 states and 9196 transitions. [2022-11-03 01:58:38,934 INFO L78 Accepts]: Start accepts. Automaton has 5958 states and 9196 transitions. Word has length 99 [2022-11-03 01:58:38,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:38,934 INFO L495 AbstractCegarLoop]: Abstraction has 5958 states and 9196 transitions. [2022-11-03 01:58:38,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 01:58:38,935 INFO L276 IsEmpty]: Start isEmpty. Operand 5958 states and 9196 transitions. [2022-11-03 01:58:38,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-03 01:58:38,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:38,939 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:38,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:39,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:39,161 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:39,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:39,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1132720807, now seen corresponding path program 1 times [2022-11-03 01:58:39,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:39,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696728962] [2022-11-03 01:58:39,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:39,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:39,895 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:58:39,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:39,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696728962] [2022-11-03 01:58:39,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696728962] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:58:39,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165940298] [2022-11-03 01:58:39,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:39,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:39,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:39,900 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:39,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 01:58:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:40,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 1837 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 01:58:40,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:40,827 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 01:58:40,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:41,221 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:58:41,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165940298] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:58:41,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [851237866] [2022-11-03 01:58:41,251 INFO L159 IcfgInterpreter]: Started Sifa with 87 locations of interest [2022-11-03 01:58:41,251 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:58:41,256 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:58:41,261 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:58:41,262 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:58:47,287 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 582 for LOIs [2022-11-03 01:58:54,917 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 511 for LOIs [2022-11-03 01:58:55,272 INFO L197 IcfgInterpreter]: Interpreting procedure initTopDown with input of size 607 for LOIs [2022-11-03 01:58:57,540 INFO L197 IcfgInterpreter]: Interpreting procedure initFloors with input of size 581 for LOIs [2022-11-03 01:58:57,729 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 445 for LOIs [2022-11-03 01:58:57,800 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 445 for LOIs [2022-11-03 01:58:57,883 INFO L197 IcfgInterpreter]: Interpreting procedure bobCall with input of size 581 for LOIs [2022-11-03 01:59:01,944 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 585 for LOIs [2022-11-03 01:59:02,698 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 513 for LOIs [2022-11-03 01:59:02,828 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:59:35,874 WARN L234 SmtUtils]: Spent 6.95s on a formula simplification. DAG size of input: 653 DAG size of output: 600 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:59:43,195 WARN L234 SmtUtils]: Spent 6.96s on a formula simplification. DAG size of input: 653 DAG size of output: 600 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:59:51,901 WARN L234 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 780 DAG size of output: 602 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:00:10,309 WARN L234 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 622 DAG size of output: 595 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:00:16,373 WARN L234 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 624 DAG size of output: 597 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:00:24,336 WARN L234 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 630 DAG size of output: 600 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:00:30,467 WARN L234 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 630 DAG size of output: 600 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:00:42,062 WARN L234 SmtUtils]: Spent 10.55s on a formula simplification. DAG size of input: 511 DAG size of output: 450 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:00:54,106 WARN L234 SmtUtils]: Spent 10.93s on a formula simplification. DAG size of input: 547 DAG size of output: 458 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:01:00,470 WARN L234 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 634 DAG size of output: 602 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:01:06,868 WARN L234 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 634 DAG size of output: 602 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:01:14,527 WARN L234 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 637 DAG size of output: 603 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:01:20,901 WARN L234 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 635 DAG size of output: 603 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:01:20,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [851237866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:20,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:01:20,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [10, 8, 10] total 51 [2022-11-03 02:01:20,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980066034] [2022-11-03 02:01:20,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:20,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-03 02:01:20,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:20,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-03 02:01:20,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=2172, Unknown=0, NotChecked=0, Total=2550 [2022-11-03 02:01:20,912 INFO L87 Difference]: Start difference. First operand 5958 states and 9196 transitions. Second operand has 29 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 17 states have internal predecessors, (53), 11 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2022-11-03 02:01:28,098 WARN L234 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 618 DAG size of output: 583 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:01:34,364 WARN L234 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 624 DAG size of output: 589 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:01:40,651 WARN L234 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 605 DAG size of output: 586 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:01:46,271 WARN L234 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 605 DAG size of output: 586 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:01:58,335 WARN L234 SmtUtils]: Spent 11.28s on a formula simplification. DAG size of input: 607 DAG size of output: 588 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:02:10,115 WARN L234 SmtUtils]: Spent 11.39s on a formula simplification. DAG size of input: 613 DAG size of output: 594 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:03:04,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:04,953 INFO L93 Difference]: Finished difference Result 12055 states and 18610 transitions. [2022-11-03 02:03:04,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-03 02:03:04,954 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 17 states have internal predecessors, (53), 11 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) Word has length 100 [2022-11-03 02:03:04,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:05,001 INFO L225 Difference]: With dead ends: 12055 [2022-11-03 02:03:05,001 INFO L226 Difference]: Without dead ends: 6109 [2022-11-03 02:03:05,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 253 SyntacticMatches, 7 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 184.5s TimeCoverageRelationStatistics Valid=460, Invalid=2732, Unknown=0, NotChecked=0, Total=3192 [2022-11-03 02:03:05,029 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 158 mSDsluCounter, 5627 mSDsCounter, 0 mSdLazyCounter, 9809 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 6247 SdHoareTripleChecker+Invalid, 9870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 9809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:05,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 6247 Invalid, 9870 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [61 Valid, 9809 Invalid, 0 Unknown, 0 Unchecked, 57.0s Time] [2022-11-03 02:03:05,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6109 states. [2022-11-03 02:03:05,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6109 to 6030. [2022-11-03 02:03:05,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6030 states, 4146 states have (on average 1.4688856729377713) internal successors, (6090), 4362 states have internal predecessors, (6090), 1427 states have call successors, (1427), 435 states have call predecessors, (1427), 456 states have return successors, (1767), 1338 states have call predecessors, (1767), 1416 states have call successors, (1767) [2022-11-03 02:03:05,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6030 states to 6030 states and 9284 transitions. [2022-11-03 02:03:05,639 INFO L78 Accepts]: Start accepts. Automaton has 6030 states and 9284 transitions. Word has length 100 [2022-11-03 02:03:05,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:05,639 INFO L495 AbstractCegarLoop]: Abstraction has 6030 states and 9284 transitions. [2022-11-03 02:03:05,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 17 states have internal predecessors, (53), 11 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2022-11-03 02:03:05,640 INFO L276 IsEmpty]: Start isEmpty. Operand 6030 states and 9284 transitions. [2022-11-03 02:03:05,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-03 02:03:05,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:05,643 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:05,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:05,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 02:03:05,856 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:05,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:05,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1741949641, now seen corresponding path program 1 times [2022-11-03 02:03:05,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:05,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857231517] [2022-11-03 02:03:05,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:05,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:06,230 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:03:06,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:06,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857231517] [2022-11-03 02:03:06,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857231517] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:03:06,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498551261] [2022-11-03 02:03:06,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:06,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:03:06,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:03:06,236 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:03:06,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:03:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:06,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 1853 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 02:03:06,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:06,952 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 02:03:06,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:03:07,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498551261] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:07,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1265739529] [2022-11-03 02:03:07,319 INFO L159 IcfgInterpreter]: Started Sifa with 91 locations of interest [2022-11-03 02:03:07,320 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:03:07,320 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:03:07,321 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:03:07,321 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:03:12,499 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 582 for LOIs [2022-11-03 02:03:21,702 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 64 for LOIs [2022-11-03 02:03:21,717 INFO L197 IcfgInterpreter]: Interpreting procedure initTopDown with input of size 607 for LOIs [2022-11-03 02:03:23,868 INFO L197 IcfgInterpreter]: Interpreting procedure initFloors with input of size 581 for LOIs [2022-11-03 02:03:24,059 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 445 for LOIs [2022-11-03 02:03:24,126 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 445 for LOIs [2022-11-03 02:03:24,192 INFO L197 IcfgInterpreter]: Interpreting procedure bobCall with input of size 581 for LOIs [2022-11-03 02:03:27,399 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 585 for LOIs [2022-11-03 02:03:27,941 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 513 for LOIs [2022-11-03 02:03:28,070 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:04:01,564 WARN L234 SmtUtils]: Spent 7.01s on a formula simplification. DAG size of input: 653 DAG size of output: 600 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:04:08,830 WARN L234 SmtUtils]: Spent 6.96s on a formula simplification. DAG size of input: 653 DAG size of output: 600 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:04:17,370 WARN L234 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 780 DAG size of output: 602 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:04:36,041 WARN L234 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 622 DAG size of output: 595 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:04:42,106 WARN L234 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 622 DAG size of output: 597 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:04:50,180 WARN L234 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 630 DAG size of output: 600 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:04:56,318 WARN L234 SmtUtils]: Spent 5.70s on a formula simplification. DAG size of input: 628 DAG size of output: 600 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:05:04,195 WARN L234 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 634 DAG size of output: 602 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:05:10,591 WARN L234 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 634 DAG size of output: 602 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:05:18,063 WARN L234 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 637 DAG size of output: 603 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:05:24,439 WARN L234 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 637 DAG size of output: 603 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:05:31,944 WARN L234 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 640 DAG size of output: 604 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:05:38,417 WARN L234 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 640 DAG size of output: 604 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:05:38,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1265739529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:05:38,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:05:38,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [10, 8, 10] total 50 [2022-11-03 02:05:38,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670161207] [2022-11-03 02:05:38,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:05:38,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-03 02:05:38,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:05:38,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-03 02:05:38,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=2067, Unknown=0, NotChecked=0, Total=2450 [2022-11-03 02:05:38,436 INFO L87 Difference]: Start difference. First operand 6030 states and 9284 transitions. Second operand has 31 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 18 states have internal predecessors, (56), 12 states have call successors, (21), 8 states have call predecessors, (21), 9 states have return successors, (19), 11 states have call predecessors, (19), 11 states have call successors, (19) [2022-11-03 02:05:45,308 WARN L234 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 618 DAG size of output: 583 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:05:51,622 WARN L234 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 624 DAG size of output: 589 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:05:57,643 WARN L234 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 605 DAG size of output: 586 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:06:03,189 WARN L234 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 605 DAG size of output: 586 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:06:08,835 WARN L234 SmtUtils]: Spent 5.00s on a formula simplification. DAG size of input: 605 DAG size of output: 585 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:06:14,207 WARN L234 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 611 DAG size of output: 591 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:06:59,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:59,318 INFO L93 Difference]: Finished difference Result 12033 states and 18572 transitions. [2022-11-03 02:06:59,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 02:06:59,318 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 18 states have internal predecessors, (56), 12 states have call successors, (21), 8 states have call predecessors, (21), 9 states have return successors, (19), 11 states have call predecessors, (19), 11 states have call successors, (19) Word has length 106 [2022-11-03 02:06:59,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:59,355 INFO L225 Difference]: With dead ends: 12033 [2022-11-03 02:06:59,356 INFO L226 Difference]: Without dead ends: 6099 [2022-11-03 02:06:59,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 268 SyntacticMatches, 11 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 163.7s TimeCoverageRelationStatistics Valid=462, Invalid=2618, Unknown=0, NotChecked=0, Total=3080 [2022-11-03 02:06:59,384 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 183 mSDsluCounter, 5289 mSDsCounter, 0 mSdLazyCounter, 8593 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 5917 SdHoareTripleChecker+Invalid, 8663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 8593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:59,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 5917 Invalid, 8663 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [70 Valid, 8593 Invalid, 0 Unknown, 0 Unchecked, 46.9s Time] [2022-11-03 02:06:59,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6099 states. [2022-11-03 02:06:59,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6099 to 6032. [2022-11-03 02:06:59,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6032 states, 4147 states have (on average 1.4685314685314685) internal successors, (6090), 4363 states have internal predecessors, (6090), 1427 states have call successors, (1427), 436 states have call predecessors, (1427), 457 states have return successors, (1767), 1338 states have call predecessors, (1767), 1416 states have call successors, (1767) [2022-11-03 02:06:59,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6032 states to 6032 states and 9284 transitions. [2022-11-03 02:06:59,981 INFO L78 Accepts]: Start accepts. Automaton has 6032 states and 9284 transitions. Word has length 106 [2022-11-03 02:06:59,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:59,981 INFO L495 AbstractCegarLoop]: Abstraction has 6032 states and 9284 transitions. [2022-11-03 02:06:59,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 18 states have internal predecessors, (56), 12 states have call successors, (21), 8 states have call predecessors, (21), 9 states have return successors, (19), 11 states have call predecessors, (19), 11 states have call successors, (19) [2022-11-03 02:06:59,983 INFO L276 IsEmpty]: Start isEmpty. Operand 6032 states and 9284 transitions. [2022-11-03 02:06:59,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-03 02:06:59,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:59,989 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:07:00,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:07:00,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:00,204 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:00,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:00,205 INFO L85 PathProgramCache]: Analyzing trace with hash 555137121, now seen corresponding path program 1 times [2022-11-03 02:07:00,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:00,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672174038] [2022-11-03 02:07:00,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:00,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:00,642 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:07:00,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:00,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672174038] [2022-11-03 02:07:00,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672174038] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:07:00,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220546306] [2022-11-03 02:07:00,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:00,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:00,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:07:00,648 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:07:00,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b2cb81-4018-4bf1-96d7-6a0a00234cb1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:07:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:01,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 02:07:01,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:01,432 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:07:01,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:07:01,770 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:07:01,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220546306] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:07:01,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [664627924] [2022-11-03 02:07:01,774 INFO L159 IcfgInterpreter]: Started Sifa with 95 locations of interest [2022-11-03 02:07:01,774 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:07:01,775 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:07:01,775 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:07:01,775 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:07:06,113 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 582 for LOIs [2022-11-03 02:07:17,294 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 510 for LOIs [2022-11-03 02:07:17,492 INFO L197 IcfgInterpreter]: Interpreting procedure initTopDown with input of size 607 for LOIs [2022-11-03 02:07:19,521 INFO L197 IcfgInterpreter]: Interpreting procedure initFloors with input of size 581 for LOIs [2022-11-03 02:07:19,768 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 445 for LOIs [2022-11-03 02:07:19,845 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 445 for LOIs [2022-11-03 02:07:19,919 INFO L197 IcfgInterpreter]: Interpreting procedure bobCall with input of size 581 for LOIs [2022-11-03 02:07:23,271 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 585 for LOIs [2022-11-03 02:07:23,924 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 513 for LOIs [2022-11-03 02:07:24,054 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:07:56,134 WARN L234 SmtUtils]: Spent 6.89s on a formula simplification. DAG size of input: 653 DAG size of output: 600 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:08:03,344 WARN L234 SmtUtils]: Spent 6.91s on a formula simplification. DAG size of input: 653 DAG size of output: 600 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:08:11,859 WARN L234 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 780 DAG size of output: 602 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:08:29,793 WARN L234 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 622 DAG size of output: 595 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:08:35,646 WARN L234 SmtUtils]: Spent 5.46s on a formula simplification. DAG size of input: 622 DAG size of output: 597 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:08:43,605 WARN L234 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 630 DAG size of output: 600 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:08:49,643 WARN L234 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 628 DAG size of output: 600 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:05,685 WARN L234 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 634 DAG size of output: 602 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:11,860 WARN L234 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 632 DAG size of output: 602 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:19,301 WARN L234 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 637 DAG size of output: 603 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:25,615 WARN L234 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 637 DAG size of output: 603 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:33,097 WARN L234 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 640 DAG size of output: 604 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:39,478 WARN L234 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 638 DAG size of output: 604 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:47,144 WARN L234 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 643 DAG size of output: 606 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:53,590 WARN L234 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 641 DAG size of output: 605 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:53,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [664627924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:53,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:09:53,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [10, 8, 10] total 52 [2022-11-03 02:09:53,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269572713] [2022-11-03 02:09:53,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:53,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-03 02:09:53,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:53,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-03 02:09:53,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=2235, Unknown=0, NotChecked=0, Total=2652 [2022-11-03 02:09:53,600 INFO L87 Difference]: Start difference. First operand 6032 states and 9284 transitions. Second operand has 33 states, 25 states have (on average 2.36) internal successors, (59), 19 states have internal predecessors, (59), 13 states have call successors, (22), 8 states have call predecessors, (22), 9 states have return successors, (20), 12 states have call predecessors, (20), 12 states have call successors, (20) [2022-11-03 02:10:00,325 WARN L234 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 618 DAG size of output: 583 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:10:06,534 WARN L234 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 624 DAG size of output: 589 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:10:12,622 WARN L234 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 605 DAG size of output: 586 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:10:26,943 WARN L234 SmtUtils]: Spent 8.06s on a formula simplification. DAG size of input: 609 DAG size of output: 589 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:10:35,414 WARN L234 SmtUtils]: Spent 8.18s on a formula simplification. DAG size of input: 615 DAG size of output: 595 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)