./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 04ae9a4eaad9b026cab167b9d875c53fcb305c3c3f2af8aa4a0b048c8b5ef4cb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 11:18:31,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:18:31,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:18:31,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:18:31,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:18:31,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:18:31,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:18:31,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:18:31,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:18:31,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:18:31,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:18:31,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:18:31,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:18:31,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:18:31,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:18:31,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:18:31,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:18:31,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:18:31,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:18:31,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:18:31,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:18:31,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:18:31,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:18:31,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:18:31,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:18:31,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:18:31,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:18:31,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:18:31,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:18:31,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:18:31,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:18:31,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:18:31,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:18:31,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:18:31,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:18:31,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:18:31,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:18:31,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:18:31,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:18:31,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:18:31,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:18:31,724 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 11:18:31,743 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:18:31,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:18:31,743 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:18:31,743 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:18:31,744 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:18:31,744 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:18:31,744 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:18:31,744 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:18:31,745 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:18:31,745 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:18:31,745 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:18:31,745 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:18:31,745 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:18:31,745 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:18:31,745 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:18:31,746 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:18:31,746 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:18:31,746 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:18:31,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:18:31,747 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:18:31,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:18:31,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:18:31,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:18:31,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:18:31,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:18:31,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:18:31,748 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:18:31,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:18:31,748 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:18:31,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:18:31,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:18:31,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:18:31,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:18:31,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:18:31,749 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:18:31,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:18:31,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:18:31,750 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:18:31,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:18:31,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:18:31,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:18:31,750 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_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04ae9a4eaad9b026cab167b9d875c53fcb305c3c3f2af8aa4a0b048c8b5ef4cb [2022-12-14 11:18:31,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:18:31,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:18:31,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:18:31,959 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:18:31,960 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:18:31,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c [2022-12-14 11:18:34,655 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:18:34,958 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:18:34,958 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c [2022-12-14 11:18:34,975 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/data/50ad6d3a4/59dc2ad75c7e4391875b20ace62848c3/FLAG5981667f0 [2022-12-14 11:18:34,985 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/data/50ad6d3a4/59dc2ad75c7e4391875b20ace62848c3 [2022-12-14 11:18:34,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:18:34,988 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:18:34,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:18:34,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:18:34,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:18:34,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:18:34" (1/1) ... [2022-12-14 11:18:34,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b0f1aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:34, skipping insertion in model container [2022-12-14 11:18:34,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:18:34" (1/1) ... [2022-12-14 11:18:34,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:18:35,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:18:35,240 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c[11232,11245] [2022-12-14 11:18:35,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:18:35,449 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:18:35,479 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c[11232,11245] [2022-12-14 11:18:35,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:18:35,599 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:18:35,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:35 WrapperNode [2022-12-14 11:18:35,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:18:35,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:18:35,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:18:35,601 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:18:35,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:35" (1/1) ... [2022-12-14 11:18:35,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:35" (1/1) ... [2022-12-14 11:18:35,678 INFO L138 Inliner]: procedures = 97, calls = 350, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 955 [2022-12-14 11:18:35,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:18:35,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:18:35,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:18:35,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:18:35,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:35" (1/1) ... [2022-12-14 11:18:35,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:35" (1/1) ... [2022-12-14 11:18:35,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:35" (1/1) ... [2022-12-14 11:18:35,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:35" (1/1) ... [2022-12-14 11:18:35,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:35" (1/1) ... [2022-12-14 11:18:35,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:35" (1/1) ... [2022-12-14 11:18:35,733 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:35" (1/1) ... [2022-12-14 11:18:35,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:35" (1/1) ... [2022-12-14 11:18:35,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:18:35,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:18:35,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:18:35,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:18:35,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:35" (1/1) ... [2022-12-14 11:18:35,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:18:35,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:18:35,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:18:35,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:18:35,813 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-12-14 11:18:35,813 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-12-14 11:18:35,813 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-12-14 11:18:35,813 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-12-14 11:18:35,813 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-12-14 11:18:35,813 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-12-14 11:18:35,814 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-12-14 11:18:35,814 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-12-14 11:18:35,814 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-14 11:18:35,814 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-14 11:18:35,814 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-12-14 11:18:35,814 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-12-14 11:18:35,814 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-12-14 11:18:35,814 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-12-14 11:18:35,815 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-12-14 11:18:35,815 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-12-14 11:18:35,815 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-12-14 11:18:35,815 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-12-14 11:18:35,815 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-12-14 11:18:35,815 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-12-14 11:18:35,815 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-12-14 11:18:35,816 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-12-14 11:18:35,816 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-12-14 11:18:35,816 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-12-14 11:18:35,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:18:35,816 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-12-14 11:18:35,816 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-12-14 11:18:35,816 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-12-14 11:18:35,817 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-12-14 11:18:35,817 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-12-14 11:18:35,817 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-12-14 11:18:35,817 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-12-14 11:18:35,817 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-12-14 11:18:35,817 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-14 11:18:35,817 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-14 11:18:35,818 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-12-14 11:18:35,818 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-12-14 11:18:35,818 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-14 11:18:35,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-14 11:18:35,818 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-12-14 11:18:35,818 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-12-14 11:18:35,818 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-12-14 11:18:35,819 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-12-14 11:18:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-12-14 11:18:35,819 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-12-14 11:18:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-12-14 11:18:35,819 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-12-14 11:18:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-12-14 11:18:35,819 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-12-14 11:18:35,820 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-12-14 11:18:35,820 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-12-14 11:18:35,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:18:35,820 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-12-14 11:18:35,820 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-12-14 11:18:35,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:18:35,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:18:35,820 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-12-14 11:18:35,821 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-12-14 11:18:35,943 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:18:35,945 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:18:36,712 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:18:37,250 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:18:37,250 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 11:18:37,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:18:37 BoogieIcfgContainer [2022-12-14 11:18:37,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:18:37,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:18:37,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:18:37,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:18:37,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:18:34" (1/3) ... [2022-12-14 11:18:37,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6574e4f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:18:37, skipping insertion in model container [2022-12-14 11:18:37,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:35" (2/3) ... [2022-12-14 11:18:37,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6574e4f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:18:37, skipping insertion in model container [2022-12-14 11:18:37,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:18:37" (3/3) ... [2022-12-14 11:18:37,260 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product31.cil.c [2022-12-14 11:18:37,276 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:18:37,277 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 11:18:37,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:18:37,332 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;@7be31ccf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:18:37,332 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 11:18:37,338 INFO L276 IsEmpty]: Start isEmpty. Operand has 404 states, 270 states have (on average 1.5703703703703704) internal successors, (424), 291 states have internal predecessors, (424), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 99 states have call predecessors, (105), 105 states have call successors, (105) [2022-12-14 11:18:37,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-14 11:18:37,375 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:18:37,375 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:18:37,376 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:18:37,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:18:37,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1920168282, now seen corresponding path program 1 times [2022-12-14 11:18:37,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:18:37,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21577321] [2022-12-14 11:18:37,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:18:37,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:18:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:18:37,748 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:18:37,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:18:37,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21577321] [2022-12-14 11:18:37,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21577321] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:18:37,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:18:37,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:18:37,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042073466] [2022-12-14 11:18:37,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:18:37,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 11:18:37,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:18:37,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 11:18:37,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:18:37,784 INFO L87 Difference]: Start difference. First operand has 404 states, 270 states have (on average 1.5703703703703704) internal successors, (424), 291 states have internal predecessors, (424), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 99 states have call predecessors, (105), 105 states have call successors, (105) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-12-14 11:18:37,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:18:37,921 INFO L93 Difference]: Finished difference Result 422 states and 661 transitions. [2022-12-14 11:18:37,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 11:18:37,923 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 88 [2022-12-14 11:18:37,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:18:37,937 INFO L225 Difference]: With dead ends: 422 [2022-12-14 11:18:37,937 INFO L226 Difference]: Without dead ends: 400 [2022-12-14 11:18:37,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:18:37,942 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:18:37,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 589 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:18:37,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-12-14 11:18:37,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2022-12-14 11:18:38,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 268 states have (on average 1.5597014925373134) internal successors, (418), 287 states have internal predecessors, (418), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2022-12-14 11:18:38,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 623 transitions. [2022-12-14 11:18:38,005 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 623 transitions. Word has length 88 [2022-12-14 11:18:38,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:18:38,006 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 623 transitions. [2022-12-14 11:18:38,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-12-14 11:18:38,007 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 623 transitions. [2022-12-14 11:18:38,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-14 11:18:38,011 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:18:38,012 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:18:38,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:18:38,012 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:18:38,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:18:38,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1271020624, now seen corresponding path program 1 times [2022-12-14 11:18:38,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:18:38,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897042955] [2022-12-14 11:18:38,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:18:38,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:18:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:18:38,407 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:18:38,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:18:38,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897042955] [2022-12-14 11:18:38,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897042955] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:18:38,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:18:38,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 11:18:38,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828523618] [2022-12-14 11:18:38,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:18:38,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 11:18:38,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:18:38,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 11:18:38,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:18:38,411 INFO L87 Difference]: Start difference. First operand 400 states and 623 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-14 11:18:40,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:18:40,182 INFO L93 Difference]: Finished difference Result 1217 states and 1930 transitions. [2022-12-14 11:18:40,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 11:18:40,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 89 [2022-12-14 11:18:40,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:18:40,190 INFO L225 Difference]: With dead ends: 1217 [2022-12-14 11:18:40,190 INFO L226 Difference]: Without dead ends: 840 [2022-12-14 11:18:40,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-14 11:18:40,195 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 1216 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 2702 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 3159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 2702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-14 11:18:40,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 1608 Invalid, 3159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 2702 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-14 11:18:40,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-12-14 11:18:40,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 791. [2022-12-14 11:18:40,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 540 states have (on average 1.5740740740740742) internal successors, (850), 573 states have internal predecessors, (850), 201 states have call successors, (201), 49 states have call predecessors, (201), 49 states have return successors, (202), 193 states have call predecessors, (202), 196 states have call successors, (202) [2022-12-14 11:18:40,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1253 transitions. [2022-12-14 11:18:40,252 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1253 transitions. Word has length 89 [2022-12-14 11:18:40,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:18:40,252 INFO L495 AbstractCegarLoop]: Abstraction has 791 states and 1253 transitions. [2022-12-14 11:18:40,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-14 11:18:40,252 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1253 transitions. [2022-12-14 11:18:40,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 11:18:40,254 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:18:40,254 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:18:40,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 11:18:40,255 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:18:40,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:18:40,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1811253800, now seen corresponding path program 1 times [2022-12-14 11:18:40,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:18:40,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888890519] [2022-12-14 11:18:40,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:18:40,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:18:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:18:40,431 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:18:40,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:18:40,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888890519] [2022-12-14 11:18:40,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888890519] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:18:40,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:18:40,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 11:18:40,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220462652] [2022-12-14 11:18:40,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:18:40,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:18:40,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:18:40,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:18:40,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:18:40,434 INFO L87 Difference]: Start difference. First operand 791 states and 1253 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 11:18:40,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:18:40,842 INFO L93 Difference]: Finished difference Result 862 states and 1365 transitions. [2022-12-14 11:18:40,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:18:40,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 93 [2022-12-14 11:18:40,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:18:40,847 INFO L225 Difference]: With dead ends: 862 [2022-12-14 11:18:40,847 INFO L226 Difference]: Without dead ends: 847 [2022-12-14 11:18:40,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:18:40,848 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 715 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:18:40,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 1547 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:18:40,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-12-14 11:18:40,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 795. [2022-12-14 11:18:40,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 544 states have (on average 1.5698529411764706) internal successors, (854), 577 states have internal predecessors, (854), 201 states have call successors, (201), 49 states have call predecessors, (201), 49 states have return successors, (202), 193 states have call predecessors, (202), 196 states have call successors, (202) [2022-12-14 11:18:40,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1257 transitions. [2022-12-14 11:18:40,893 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1257 transitions. Word has length 93 [2022-12-14 11:18:40,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:18:40,893 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1257 transitions. [2022-12-14 11:18:40,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 11:18:40,893 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1257 transitions. [2022-12-14 11:18:40,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-14 11:18:40,895 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:18:40,895 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:18:40,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 11:18:40,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:18:40,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:18:40,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1263631651, now seen corresponding path program 1 times [2022-12-14 11:18:40,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:18:40,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53150592] [2022-12-14 11:18:40,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:18:40,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:18:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:18:41,136 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:18:41,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:18:41,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53150592] [2022-12-14 11:18:41,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53150592] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:18:41,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:18:41,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 11:18:41,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743665187] [2022-12-14 11:18:41,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:18:41,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:18:41,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:18:41,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:18:41,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:18:41,139 INFO L87 Difference]: Start difference. First operand 795 states and 1257 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2022-12-14 11:18:41,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:18:41,300 INFO L93 Difference]: Finished difference Result 814 states and 1281 transitions. [2022-12-14 11:18:41,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 11:18:41,301 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) Word has length 98 [2022-12-14 11:18:41,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:18:41,305 INFO L225 Difference]: With dead ends: 814 [2022-12-14 11:18:41,305 INFO L226 Difference]: Without dead ends: 799 [2022-12-14 11:18:41,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:18:41,306 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 41 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:18:41,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 2889 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:18:41,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-12-14 11:18:41,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 795. [2022-12-14 11:18:41,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 544 states have (on average 1.5661764705882353) internal successors, (852), 577 states have internal predecessors, (852), 201 states have call successors, (201), 49 states have call predecessors, (201), 49 states have return successors, (202), 193 states have call predecessors, (202), 196 states have call successors, (202) [2022-12-14 11:18:41,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1255 transitions. [2022-12-14 11:18:41,340 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1255 transitions. Word has length 98 [2022-12-14 11:18:41,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:18:41,341 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1255 transitions. [2022-12-14 11:18:41,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2022-12-14 11:18:41,341 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1255 transitions. [2022-12-14 11:18:41,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-14 11:18:41,343 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:18:41,343 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:18:41,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 11:18:41,343 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:18:41,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:18:41,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1929179005, now seen corresponding path program 1 times [2022-12-14 11:18:41,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:18:41,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624975426] [2022-12-14 11:18:41,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:18:41,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:18:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:18:42,991 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-14 11:18:42,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:18:42,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624975426] [2022-12-14 11:18:42,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624975426] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:18:42,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323185765] [2022-12-14 11:18:42,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:18:42,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:18:42,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:18:42,993 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:18:42,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 11:18:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:18:43,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 1852 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 11:18:43,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:18:43,344 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 11:18:43,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:18:43,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323185765] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:18:43,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:18:43,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2022-12-14 11:18:43,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289513166] [2022-12-14 11:18:43,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:18:43,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:18:43,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:18:43,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:18:43,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-12-14 11:18:43,346 INFO L87 Difference]: Start difference. First operand 795 states and 1255 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-12-14 11:18:43,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:18:43,513 INFO L93 Difference]: Finished difference Result 878 states and 1379 transitions. [2022-12-14 11:18:43,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:18:43,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 105 [2022-12-14 11:18:43,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:18:43,517 INFO L225 Difference]: With dead ends: 878 [2022-12-14 11:18:43,517 INFO L226 Difference]: Without dead ends: 863 [2022-12-14 11:18:43,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-12-14 11:18:43,519 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 44 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:18:43,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 1816 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:18:43,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2022-12-14 11:18:43,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 799. [2022-12-14 11:18:43,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 548 states have (on average 1.562043795620438) internal successors, (856), 581 states have internal predecessors, (856), 201 states have call successors, (201), 49 states have call predecessors, (201), 49 states have return successors, (202), 193 states have call predecessors, (202), 196 states have call successors, (202) [2022-12-14 11:18:43,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1259 transitions. [2022-12-14 11:18:43,556 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1259 transitions. Word has length 105 [2022-12-14 11:18:43,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:18:43,557 INFO L495 AbstractCegarLoop]: Abstraction has 799 states and 1259 transitions. [2022-12-14 11:18:43,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-12-14 11:18:43,557 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1259 transitions. [2022-12-14 11:18:43,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-12-14 11:18:43,559 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:18:43,559 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:18:43,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:18:43,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:18:43,760 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:18:43,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:18:43,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1352453826, now seen corresponding path program 1 times [2022-12-14 11:18:43,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:18:43,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683286408] [2022-12-14 11:18:43,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:18:43,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:18:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:18:44,769 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-14 11:18:44,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:18:44,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683286408] [2022-12-14 11:18:44,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683286408] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:18:44,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707286380] [2022-12-14 11:18:44,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:18:44,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:18:44,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:18:44,771 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:18:44,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 11:18:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:18:45,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 1916 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-14 11:18:45,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:18:45,553 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 11:18:45,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:19:13,032 WARN L233 SmtUtils]: Spent 26.22s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 11:19:38,349 WARN L233 SmtUtils]: Spent 24.85s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 11:19:38,764 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-14 11:19:38,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707286380] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:19:38,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1705614614] [2022-12-14 11:19:38,780 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2022-12-14 11:19:38,780 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:19:38,782 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:19:38,786 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:19:38,786 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:19:44,137 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 435 for LOIs [2022-12-14 11:19:44,203 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 586 for LOIs [2022-12-14 11:19:46,623 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 586 for LOIs [2022-12-14 11:19:54,854 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 447 for LOIs [2022-12-14 11:19:56,879 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 501 for LOIs [2022-12-14 11:19:58,940 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 55 for LOIs [2022-12-14 11:19:58,952 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 73 for LOIs [2022-12-14 11:19:58,957 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 593 for LOIs [2022-12-14 11:20:02,454 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 31 for LOIs [2022-12-14 11:20:02,456 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 455 for LOIs [2022-12-14 11:20:03,372 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 449 for LOIs [2022-12-14 11:20:03,446 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 556 for LOIs [2022-12-14 11:20:06,008 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 833 for LOIs [2022-12-14 11:20:42,528 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 660 for LOIs [2022-12-14 11:20:43,023 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:20:55,301 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 660 DAG size of output: 521 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:21:02,128 WARN L233 SmtUtils]: Spent 6.47s on a formula simplification. DAG size of input: 700 DAG size of output: 535 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:21:18,847 WARN L233 SmtUtils]: Spent 7.11s on a formula simplification. DAG size of input: 833 DAG size of output: 684 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:21:32,211 WARN L233 SmtUtils]: Spent 12.09s on a formula simplification. DAG size of input: 961 DAG size of output: 797 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:23:30,354 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12518#(and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (= (select |#length| 9) 21) (= (select (select |#memory_int| 28) 2) 105) (= 32 (select (select |#memory_int| 28) 0)) (= 30 (select |#length| 7)) (= (select |#valid| 30) 1) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select (select |#memory_int| 31) 2) 105) (= (select |#valid| 15) 1) (= ~executiveFloor~0 4) (<= 0 (+ ~currentFloorID~0 2147483648)) (= (select (select |#memory_int| 34) 2) 105) (= 32 (select (select |#memory_int| 34) 0)) (= ~floorButtons_3~0 0) (= 10 (select |#length| 16)) (= (select |#length| 33) 4) (= (select |#valid| 26) 1) (<= ~currentHeading~0 1) (= (select (select |#memory_int| 26) 3) 0) (= (select (select |#memory_int| 20) 2) 0) (= 3 (select |#length| 20)) (= (select |#valid| 35) 1) (= (select |#valid| 9) 1) (= (select (select |#memory_int| 24) 1) 73) (= (select (select |#memory_int| 23) 3) 110) (= 91 (select (select |#memory_int| 18) 0)) (= (select |#length| 12) 25) (= (select (select |#memory_int| 25) 3) 0) (= 91 (select (select |#memory_int| 17) 0)) (= (select (select |#memory_int| 30) 4) 58) (= (select |#valid| 11) 1) (= (select |#valid| 27) 1) (= (select |#valid| 33) 1) (= (select (select |#memory_int| 32) 2) 105) (= 30 (select |#length| 4)) (= (select (select |#memory_int| 29) 2) 105) (= (select |#length| 28) 4) (= 4 (select |#length| 31)) (= (select |#length| 27) 4) (= (select |#length| 22) 3) (<= ~currentFloorID~0 2147483647) (= ~calls_3~0 0) (= 4 (select |#length| 26)) (= 6 (select |#length| 30)) (= ~calls_0~0 0) (= 112 (select (select |#memory_int| 22) 1)) (= (select (select |#memory_int| 17) 2) 93) (= 31 (select |#length| 2)) (= (select (select |#memory_int| 27) 3) 0) (= 76 (select (select |#memory_int| 24) 2)) (= ~head~0.offset 0) (= (select (select |#memory_int| 32) 3) 0) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= (select (select |#memory_int| 28) 3) 0) (= (select (select |#memory_int| 29) 3) 0) (= 95 (select (select |#memory_int| 30) 2)) (= 32 (select (select |#memory_int| 30) 0)) (= (select (select |#memory_int| 30) 1) 70) (= 4 (select |#length| 25)) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= ~floorButtons_4~0 0) (= (select |#valid| 18) 1) (= ~calls_1~0 0) (= (select |#valid| 22) 1) (= 30 (select |#length| 13)) (= (select (select |#memory_int| 18) 3) 0) (= 2 (select |#length| 36)) (= (select (select |#memory_int| 26) 2) 105) (= (select (select |#memory_int| 34) 1) 37) (= (select (select |#memory_int| 19) 4) 0) (= (select |#valid| 24) 1) (= 30 (select |#length| 10)) (= (select (select |#memory_int| 29) 1) 37) (not (= ~landingButtons_spc1_0~0 0)) (= (select (select |#memory_int| 25) 1) 37) (= (select (select |#memory_int| 17) 3) 0) (= 4 (select |#length| 34)) (= (select |#valid| 12) 1) (= (select |#valid| 32) 1) (= (select (select |#memory_int| 31) 1) 37) (= ~floorButtons_2~0 0) (= (select |#valid| 28) 1) (= (select (select |#memory_int| 18) 2) 32) (= (select (select |#memory_int| 25) 2) 105) (= (select |#length| 17) 4) (= (select (select |#memory_int| 27) 1) 37) (= (select |#length| 35) 4) (= (select |#valid| 4) 1) (= 5 (select |#length| 23)) (= (select (select |#memory_int| 35) 3) 0) (= 119 (select (select |#memory_int| 23) 2)) (= 32 (select (select |#memory_int| 24) 0)) (= 32 (select (select |#memory_int| 26) 0)) (= (select (select |#memory_int| 32) 1) 37) (= (select (select |#memory_int| 28) 1) 37) (= (select (select |#memory_int| 30) 5) 0) (= (select (select |#memory_int| 22) 2) 0) (= (select (select |#memory_int| 20) 1) 105) (= (select (select |#memory_int| 33) 3) 0) (= (select |#valid| 1) 1) (= (select |#valid| 20) 1) (= 97 (select (select |#memory_int| 19) 1)) (= ~floorButtons_1~0 0) (= 32 (select (select |#memory_int| 35) 0)) (= (select |#length| 6) 21) (= (select (select |#memory_int| 36) 1) 0) (= (select (select |#memory_int| 23) 0) 100) (= (select |#valid| 21) 1) (= 7 (select |#length| 24)) (= 58 (select (select |#memory_int| 24) 5)) (= ~floorButtons_0~0 0) (= (select (select |#memory_int| 24) 6) 0) (= (select (select |#memory_int| 31) 0) 32) (= (select (select |#memory_int| 33) 1) 37) (= 32 (select (select |#memory_int| 27) 0)) (= (select |#valid| 14) 1) (= 95 (select (select |#memory_int| 24) 3)) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (= (select (select |#memory_int| 33) 0) 32) (= (select (select |#memory_int| 35) 1) 37) (= (select |#valid| 25) 1) (= 4 (select |#length| 18)) (= ~head~0.base 0) (= (select |#length| 32) 4) (= 112 (select (select |#memory_int| 24) 4)) (= (select (select |#memory_int| 17) 1) 95) (= (select (select |#memory_int| 34) 3) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select |#valid| 36) 1) (= 9 (select |#length| 11)) (= (select |#length| 29) 4) (= (select (select |#memory_int| 1) 0) 48) (= (select |#valid| 23) 1) (= 32 (select (select |#memory_int| 29) 0)) (= (select (select |#memory_int| 26) 1) 37) (= 112 (select (select |#memory_int| 30) 3)) (<= 0 ~currentHeading~0) (= (select (select |#memory_int| 23) 4) 0) (= (select |#valid| 19) 1) (= 32 (select (select |#memory_int| 19) 3)) (= (select |#valid| 31) 1) (= (select |#valid| 34) 1) (= (select (select |#memory_int| 33) 2) 105) (= (select (select |#memory_int| 27) 2) 105) (= (select |#valid| 16) 1) (= 111 (select (select |#memory_int| 23) 1)) (= 116 (select (select |#memory_int| 19) 2)) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 20) 0) 37) (= (select (select |#memory_int| 1) 1) 0) (= (select (select |#memory_int| 36) 0) 10) (= ~calls_2~0 0) (= ~calls_4~0 0) (= (select |#valid| 29) 1) (= (select (select |#memory_int| 22) 0) 117) (= ~maximumWeight~0 100) (= (select (select |#memory_int| 25) 0) 32) (= (select (select |#memory_int| 31) 3) 0) (= (select |#length| 21) 10) (= (select |#valid| 17) 1) (= 93 (select (select |#memory_int| 18) 1)) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= 32 (select (select |#memory_int| 19) 0)) (= (select |#length| 19) 5) (= (select |#valid| 13) 1) (< 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 12) (= (select (select |#memory_int| 35) 2) 105) (= |#NULL.base| 0) (= 32 (select (select |#memory_int| 32) 0)))' at error location [2022-12-14 11:23:30,355 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:23:30,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:23:30,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 12] total 32 [2022-12-14 11:23:30,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409601071] [2022-12-14 11:23:30,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:23:30,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-14 11:23:30,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:23:30,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-14 11:23:30,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1146, Invalid=12426, Unknown=0, NotChecked=0, Total=13572 [2022-12-14 11:23:30,361 INFO L87 Difference]: Start difference. First operand 799 states and 1259 transitions. Second operand has 32 states, 23 states have (on average 7.260869565217392) internal successors, (167), 27 states have internal predecessors, (167), 14 states have call successors, (56), 7 states have call predecessors, (56), 19 states have return successors, (58), 19 states have call predecessors, (58), 13 states have call successors, (58) [2022-12-14 11:23:45,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:23:45,967 INFO L93 Difference]: Finished difference Result 4480 states and 7162 transitions. [2022-12-14 11:23:45,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-12-14 11:23:45,967 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 23 states have (on average 7.260869565217392) internal successors, (167), 27 states have internal predecessors, (167), 14 states have call successors, (56), 7 states have call predecessors, (56), 19 states have return successors, (58), 19 states have call predecessors, (58), 13 states have call successors, (58) Word has length 128 [2022-12-14 11:23:45,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:23:45,981 INFO L225 Difference]: With dead ends: 4480 [2022-12-14 11:23:45,981 INFO L226 Difference]: Without dead ends: 3710 [2022-12-14 11:23:45,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 301 SyntacticMatches, 4 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13031 ImplicationChecksByTransitivity, 170.9s TimeCoverageRelationStatistics Valid=2506, Invalid=31166, Unknown=0, NotChecked=0, Total=33672 [2022-12-14 11:23:45,990 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 7981 mSDsluCounter, 9204 mSDsCounter, 0 mSdLazyCounter, 26759 mSolverCounterSat, 5291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8029 SdHoareTripleChecker+Valid, 9870 SdHoareTripleChecker+Invalid, 32050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5291 IncrementalHoareTripleChecker+Valid, 26759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-12-14 11:23:45,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8029 Valid, 9870 Invalid, 32050 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5291 Valid, 26759 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2022-12-14 11:23:45,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3710 states. [2022-12-14 11:23:46,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3710 to 3047. [2022-12-14 11:23:46,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3047 states, 2129 states have (on average 1.5570690465007047) internal successors, (3315), 2245 states have internal predecessors, (3315), 718 states have call successors, (718), 184 states have call predecessors, (718), 199 states have return successors, (767), 697 states have call predecessors, (767), 713 states have call successors, (767) [2022-12-14 11:23:46,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3047 states to 3047 states and 4800 transitions. [2022-12-14 11:23:46,159 INFO L78 Accepts]: Start accepts. Automaton has 3047 states and 4800 transitions. Word has length 128 [2022-12-14 11:23:46,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:23:46,159 INFO L495 AbstractCegarLoop]: Abstraction has 3047 states and 4800 transitions. [2022-12-14 11:23:46,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 23 states have (on average 7.260869565217392) internal successors, (167), 27 states have internal predecessors, (167), 14 states have call successors, (56), 7 states have call predecessors, (56), 19 states have return successors, (58), 19 states have call predecessors, (58), 13 states have call successors, (58) [2022-12-14 11:23:46,160 INFO L276 IsEmpty]: Start isEmpty. Operand 3047 states and 4800 transitions. [2022-12-14 11:23:46,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-12-14 11:23:46,166 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:23:46,166 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-14 11:23:46,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 11:23:46,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:23:46,367 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:23:46,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:23:46,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1709765072, now seen corresponding path program 1 times [2022-12-14 11:23:46,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:23:46,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809736669] [2022-12-14 11:23:46,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:23:46,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:23:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:23:46,550 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-12-14 11:23:46,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:23:46,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809736669] [2022-12-14 11:23:46,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809736669] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:23:46,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510182271] [2022-12-14 11:23:46,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:23:46,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:23:46,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:23:46,552 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:23:46,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 11:23:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:23:46,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 2241 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 11:23:46,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:23:47,041 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-12-14 11:23:47,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:23:47,217 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-12-14 11:23:47,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510182271] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:23:47,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1788375137] [2022-12-14 11:23:47,220 INFO L159 IcfgInterpreter]: Started Sifa with 92 locations of interest [2022-12-14 11:23:47,220 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:23:47,220 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:23:47,220 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:23:47,220 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:23:53,745 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 412 for LOIs [2022-12-14 11:23:53,804 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 586 for LOIs [2022-12-14 11:23:59,766 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 693 for LOIs [2022-12-14 11:24:04,156 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 40 for LOIs [2022-12-14 11:24:04,242 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 27 for LOIs [2022-12-14 11:24:04,263 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 54 for LOIs [2022-12-14 11:24:04,275 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 53 for LOIs [2022-12-14 11:24:04,281 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 593 for LOIs [2022-12-14 11:24:07,786 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 27 for LOIs [2022-12-14 11:24:07,788 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 50 for LOIs [2022-12-14 11:24:07,841 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 46 for LOIs [2022-12-14 11:24:07,844 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 556 for LOIs [2022-12-14 11:24:10,434 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 833 for LOIs [2022-12-14 11:24:17,869 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 660 for LOIs [2022-12-14 11:24:18,345 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:24:29,556 WARN L233 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 660 DAG size of output: 521 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:24:36,415 WARN L233 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 700 DAG size of output: 535 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:24:52,555 WARN L233 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 833 DAG size of output: 684 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:25:04,356 WARN L233 SmtUtils]: Spent 11.43s on a formula simplification. DAG size of input: 901 DAG size of output: 809 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:25:49,689 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24283#(and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (= (select |#length| 9) 21) (= (select (select |#memory_int| 28) 2) 105) (= 32 (select (select |#memory_int| 28) 0)) (= 30 (select |#length| 7)) (= (select |#valid| 30) 1) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select (select |#memory_int| 31) 2) 105) (= (select |#valid| 15) 1) (= ~executiveFloor~0 4) (<= 0 (+ ~currentFloorID~0 2147483648)) (= (select (select |#memory_int| 34) 2) 105) (= 32 (select (select |#memory_int| 34) 0)) (= 10 (select |#length| 16)) (= (select |#length| 33) 4) (= (select |#valid| 26) 1) (= (select (select |#memory_int| 26) 3) 0) (= (select (select |#memory_int| 20) 2) 0) (= 3 (select |#length| 20)) (= (select |#valid| 35) 1) (= (select |#valid| 9) 1) (= (select (select |#memory_int| 24) 1) 73) (= (select (select |#memory_int| 23) 3) 110) (= 91 (select (select |#memory_int| 18) 0)) (= (select |#length| 12) 25) (= (select (select |#memory_int| 25) 3) 0) (= 91 (select (select |#memory_int| 17) 0)) (= (select (select |#memory_int| 30) 4) 58) (= (select |#valid| 11) 1) (= (select |#valid| 27) 1) (= (select |#valid| 33) 1) (= (select (select |#memory_int| 32) 2) 105) (= 30 (select |#length| 4)) (= (select (select |#memory_int| 29) 2) 105) (= (select |#length| 28) 4) (= 4 (select |#length| 31)) (= (select |#length| 27) 4) (= (select |#length| 22) 3) (<= ~currentFloorID~0 2147483647) (= 4 (select |#length| 26)) (= 6 (select |#length| 30)) (= 112 (select (select |#memory_int| 22) 1)) (= (select (select |#memory_int| 17) 2) 93) (= 31 (select |#length| 2)) (= (select (select |#memory_int| 27) 3) 0) (= 76 (select (select |#memory_int| 24) 2)) (= ~head~0.offset 0) (= (select (select |#memory_int| 32) 3) 0) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= (select (select |#memory_int| 28) 3) 0) (= (select (select |#memory_int| 29) 3) 0) (= 95 (select (select |#memory_int| 30) 2)) (= 32 (select (select |#memory_int| 30) 0)) (= (select (select |#memory_int| 30) 1) 70) (= 4 (select |#length| 25)) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= (select |#valid| 18) 1) (= (select |#valid| 22) 1) (= 30 (select |#length| 13)) (= (select (select |#memory_int| 18) 3) 0) (= 2 (select |#length| 36)) (= (select (select |#memory_int| 26) 2) 105) (= (select (select |#memory_int| 34) 1) 37) (= (select (select |#memory_int| 19) 4) 0) (= (select |#valid| 24) 1) (= 30 (select |#length| 10)) (= (select (select |#memory_int| 29) 1) 37) (not (= ~landingButtons_spc1_0~0 0)) (= (select (select |#memory_int| 25) 1) 37) (= (select (select |#memory_int| 17) 3) 0) (= 4 (select |#length| 34)) (= (select |#valid| 12) 1) (= (select |#valid| 32) 1) (= (select (select |#memory_int| 31) 1) 37) (= (select |#valid| 28) 1) (= (select (select |#memory_int| 18) 2) 32) (= (select (select |#memory_int| 25) 2) 105) (= (select |#length| 17) 4) (= (select (select |#memory_int| 27) 1) 37) (= (select |#length| 35) 4) (= (select |#valid| 4) 1) (= 5 (select |#length| 23)) (= (select (select |#memory_int| 35) 3) 0) (= 119 (select (select |#memory_int| 23) 2)) (= 32 (select (select |#memory_int| 24) 0)) (= 32 (select (select |#memory_int| 26) 0)) (= (select (select |#memory_int| 32) 1) 37) (= (select (select |#memory_int| 28) 1) 37) (= (select (select |#memory_int| 30) 5) 0) (= (select (select |#memory_int| 22) 2) 0) (= (select (select |#memory_int| 20) 1) 105) (= (select (select |#memory_int| 33) 3) 0) (= (select |#valid| 1) 1) (= (select |#valid| 20) 1) (= 97 (select (select |#memory_int| 19) 1)) (= 32 (select (select |#memory_int| 35) 0)) (= (select |#length| 6) 21) (= (select (select |#memory_int| 36) 1) 0) (= (select (select |#memory_int| 23) 0) 100) (= (select |#valid| 21) 1) (= 7 (select |#length| 24)) (= 58 (select (select |#memory_int| 24) 5)) (= (select (select |#memory_int| 24) 6) 0) (= (select (select |#memory_int| 31) 0) 32) (= (select (select |#memory_int| 33) 1) 37) (= 32 (select (select |#memory_int| 27) 0)) (= (select |#valid| 14) 1) (= 95 (select (select |#memory_int| 24) 3)) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (= (select (select |#memory_int| 33) 0) 32) (= (select (select |#memory_int| 35) 1) 37) (= (select |#valid| 25) 1) (= 4 (select |#length| 18)) (= ~head~0.base 0) (= (select |#length| 32) 4) (= 112 (select (select |#memory_int| 24) 4)) (= (select (select |#memory_int| 17) 1) 95) (= (select (select |#memory_int| 34) 3) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select |#valid| 36) 1) (= 9 (select |#length| 11)) (= (select |#length| 29) 4) (= (select (select |#memory_int| 1) 0) 48) (= (select |#valid| 23) 1) (= 32 (select (select |#memory_int| 29) 0)) (= (select (select |#memory_int| 26) 1) 37) (= 112 (select (select |#memory_int| 30) 3)) (= (select (select |#memory_int| 23) 4) 0) (= (select |#valid| 19) 1) (= 32 (select (select |#memory_int| 19) 3)) (= (select |#valid| 31) 1) (= (select |#valid| 34) 1) (= (select (select |#memory_int| 33) 2) 105) (= (select (select |#memory_int| 27) 2) 105) (= (select |#valid| 16) 1) (= 111 (select (select |#memory_int| 23) 1)) (= 116 (select (select |#memory_int| 19) 2)) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 20) 0) 37) (= (select (select |#memory_int| 1) 1) 0) (= (select (select |#memory_int| 36) 0) 10) (= (select |#valid| 29) 1) (= (select (select |#memory_int| 22) 0) 117) (= ~maximumWeight~0 100) (= (select (select |#memory_int| 25) 0) 32) (= (select (select |#memory_int| 31) 3) 0) (= (select |#length| 21) 10) (= (select |#valid| 17) 1) (= 93 (select (select |#memory_int| 18) 1)) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= 32 (select (select |#memory_int| 19) 0)) (= (select |#length| 19) 5) (= (select |#valid| 13) 1) (< 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 12) (= (select (select |#memory_int| 35) 2) 105) (= |#NULL.base| 0) (= 32 (select (select |#memory_int| 32) 0)))' at error location [2022-12-14 11:25:49,689 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:25:49,689 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:25:49,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 7] total 14 [2022-12-14 11:25:49,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083738932] [2022-12-14 11:25:49,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:25:49,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 11:25:49,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:25:49,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 11:25:49,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=662, Invalid=6994, Unknown=0, NotChecked=0, Total=7656 [2022-12-14 11:25:49,692 INFO L87 Difference]: Start difference. First operand 3047 states and 4800 transitions. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 7 states have call successors, (47), 3 states have call predecessors, (47), 4 states have return successors, (46), 7 states have call predecessors, (46), 6 states have call successors, (46) [2022-12-14 11:25:50,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:25:50,960 INFO L93 Difference]: Finished difference Result 3820 states and 6079 transitions. [2022-12-14 11:25:50,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 11:25:50,961 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 7 states have call successors, (47), 3 states have call predecessors, (47), 4 states have return successors, (46), 7 states have call predecessors, (46), 6 states have call successors, (46) Word has length 162 [2022-12-14 11:25:50,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:25:50,977 INFO L225 Difference]: With dead ends: 3820 [2022-12-14 11:25:50,977 INFO L226 Difference]: Without dead ends: 3801 [2022-12-14 11:25:50,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 400 SyntacticMatches, 5 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2928 ImplicationChecksByTransitivity, 91.9s TimeCoverageRelationStatistics Valid=728, Invalid=8014, Unknown=0, NotChecked=0, Total=8742 [2022-12-14 11:25:50,982 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 1123 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 11:25:50,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 1803 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 11:25:50,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3801 states. [2022-12-14 11:25:51,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3801 to 3590. [2022-12-14 11:25:51,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3590 states, 2542 states have (on average 1.518882769472856) internal successors, (3861), 2655 states have internal predecessors, (3861), 848 states have call successors, (848), 184 states have call predecessors, (848), 199 states have return successors, (976), 830 states have call predecessors, (976), 843 states have call successors, (976) [2022-12-14 11:25:51,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 5685 transitions. [2022-12-14 11:25:51,206 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 5685 transitions. Word has length 162 [2022-12-14 11:25:51,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:25:51,206 INFO L495 AbstractCegarLoop]: Abstraction has 3590 states and 5685 transitions. [2022-12-14 11:25:51,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 7 states have call successors, (47), 3 states have call predecessors, (47), 4 states have return successors, (46), 7 states have call predecessors, (46), 6 states have call successors, (46) [2022-12-14 11:25:51,207 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 5685 transitions. [2022-12-14 11:25:51,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-14 11:25:51,214 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:25:51,214 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:25:51,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 11:25:51,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:25:51,414 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:25:51,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:25:51,415 INFO L85 PathProgramCache]: Analyzing trace with hash 395440942, now seen corresponding path program 1 times [2022-12-14 11:25:51,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:25:51,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559804837] [2022-12-14 11:25:51,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:25:51,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:25:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:25:51,592 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-12-14 11:25:51,592 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:25:51,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559804837] [2022-12-14 11:25:51,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559804837] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:25:51,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:25:51,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:25:51,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574410136] [2022-12-14 11:25:51,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:25:51,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:25:51,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:25:51,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:25:51,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:25:51,594 INFO L87 Difference]: Start difference. First operand 3590 states and 5685 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-14 11:25:51,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:25:51,893 INFO L93 Difference]: Finished difference Result 6491 states and 10498 transitions. [2022-12-14 11:25:51,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:25:51,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 159 [2022-12-14 11:25:51,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:25:51,909 INFO L225 Difference]: With dead ends: 6491 [2022-12-14 11:25:51,909 INFO L226 Difference]: Without dead ends: 3999 [2022-12-14 11:25:51,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:25:51,919 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 99 mSDsluCounter, 1175 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:25:51,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 1824 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:25:51,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3999 states. [2022-12-14 11:25:52,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3999 to 3608. [2022-12-14 11:25:52,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3608 states, 2560 states have (on average 1.515234375) internal successors, (3879), 2673 states have internal predecessors, (3879), 848 states have call successors, (848), 184 states have call predecessors, (848), 199 states have return successors, (976), 830 states have call predecessors, (976), 843 states have call successors, (976) [2022-12-14 11:25:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3608 states to 3608 states and 5703 transitions. [2022-12-14 11:25:52,122 INFO L78 Accepts]: Start accepts. Automaton has 3608 states and 5703 transitions. Word has length 159 [2022-12-14 11:25:52,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:25:52,122 INFO L495 AbstractCegarLoop]: Abstraction has 3608 states and 5703 transitions. [2022-12-14 11:25:52,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-14 11:25:52,123 INFO L276 IsEmpty]: Start isEmpty. Operand 3608 states and 5703 transitions. [2022-12-14 11:25:52,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-14 11:25:52,129 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:25:52,129 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:25:52,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 11:25:52,129 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:25:52,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:25:52,130 INFO L85 PathProgramCache]: Analyzing trace with hash -35346082, now seen corresponding path program 1 times [2022-12-14 11:25:52,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:25:52,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772404161] [2022-12-14 11:25:52,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:25:52,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:25:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:25:52,303 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-12-14 11:25:52,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:25:52,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772404161] [2022-12-14 11:25:52,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772404161] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:25:52,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470539880] [2022-12-14 11:25:52,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:25:52,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:25:52,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:25:52,305 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:25:52,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 11:25:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:25:52,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:25:52,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:25:52,587 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-14 11:25:52,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:25:52,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470539880] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:25:52,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:25:52,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-12-14 11:25:52,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129120965] [2022-12-14 11:25:52,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:25:52,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:25:52,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:25:52,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:25:52,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:25:52,589 INFO L87 Difference]: Start difference. First operand 3608 states and 5703 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 11:25:52,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:25:52,977 INFO L93 Difference]: Finished difference Result 6153 states and 9904 transitions. [2022-12-14 11:25:52,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:25:52,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 166 [2022-12-14 11:25:52,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:25:52,995 INFO L225 Difference]: With dead ends: 6153 [2022-12-14 11:25:52,995 INFO L226 Difference]: Without dead ends: 3803 [2022-12-14 11:25:53,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:25:53,007 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 213 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:25:53,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1533 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:25:53,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3803 states. [2022-12-14 11:25:53,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3803 to 3803. [2022-12-14 11:25:53,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3803 states, 2750 states have (on average 1.5432727272727274) internal successors, (4244), 2863 states have internal predecessors, (4244), 848 states have call successors, (848), 189 states have call predecessors, (848), 204 states have return successors, (976), 830 states have call predecessors, (976), 843 states have call successors, (976) [2022-12-14 11:25:53,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 6068 transitions. [2022-12-14 11:25:53,215 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 6068 transitions. Word has length 166 [2022-12-14 11:25:53,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:25:53,215 INFO L495 AbstractCegarLoop]: Abstraction has 3803 states and 6068 transitions. [2022-12-14 11:25:53,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 11:25:53,216 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 6068 transitions. [2022-12-14 11:25:53,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-12-14 11:25:53,223 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:25:53,223 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:25:53,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 11:25:53,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-14 11:25:53,424 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:25:53,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:25:53,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1157458580, now seen corresponding path program 1 times [2022-12-14 11:25:53,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:25:53,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675925472] [2022-12-14 11:25:53,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:25:53,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:25:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:25:53,557 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-12-14 11:25:53,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:25:53,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675925472] [2022-12-14 11:25:53,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675925472] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:25:53,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703552579] [2022-12-14 11:25:53,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:25:53,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:25:53,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:25:53,558 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:25:53,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 11:25:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:25:53,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 2050 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:25:53,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:25:53,834 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-14 11:25:53,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:25:53,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703552579] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:25:53,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:25:53,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-12-14 11:25:53,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819528564] [2022-12-14 11:25:53,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:25:53,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:25:53,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:25:53,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:25:53,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:25:53,836 INFO L87 Difference]: Start difference. First operand 3803 states and 6068 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 11:25:54,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:25:54,256 INFO L93 Difference]: Finished difference Result 6543 states and 10629 transitions. [2022-12-14 11:25:54,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:25:54,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 171 [2022-12-14 11:25:54,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:25:54,273 INFO L225 Difference]: With dead ends: 6543 [2022-12-14 11:25:54,273 INFO L226 Difference]: Without dead ends: 3998 [2022-12-14 11:25:54,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:25:54,282 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 211 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:25:54,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1533 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:25:54,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2022-12-14 11:25:54,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 3998. [2022-12-14 11:25:54,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3998 states, 2940 states have (on average 1.567687074829932) internal successors, (4609), 3053 states have internal predecessors, (4609), 848 states have call successors, (848), 194 states have call predecessors, (848), 209 states have return successors, (976), 830 states have call predecessors, (976), 843 states have call successors, (976) [2022-12-14 11:25:54,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6433 transitions. [2022-12-14 11:25:54,490 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 6433 transitions. Word has length 171 [2022-12-14 11:25:54,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:25:54,491 INFO L495 AbstractCegarLoop]: Abstraction has 3998 states and 6433 transitions. [2022-12-14 11:25:54,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 11:25:54,491 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 6433 transitions. [2022-12-14 11:25:54,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-12-14 11:25:54,502 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:25:54,502 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:25:54,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 11:25:54,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 11:25:54,703 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:25:54,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:25:54,704 INFO L85 PathProgramCache]: Analyzing trace with hash 182621116, now seen corresponding path program 1 times [2022-12-14 11:25:54,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:25:54,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404351408] [2022-12-14 11:25:54,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:25:54,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:25:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:25:54,846 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-12-14 11:25:54,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:25:54,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404351408] [2022-12-14 11:25:54,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404351408] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:25:54,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842190456] [2022-12-14 11:25:54,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:25:54,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:25:54,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:25:54,848 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:25:54,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 11:25:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:25:55,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 2054 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:25:55,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:25:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-12-14 11:25:55,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:25:55,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842190456] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:25:55,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:25:55,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-12-14 11:25:55,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568481906] [2022-12-14 11:25:55,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:25:55,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:25:55,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:25:55,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:25:55,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:25:55,086 INFO L87 Difference]: Start difference. First operand 3998 states and 6433 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 11:25:55,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:25:55,500 INFO L93 Difference]: Finished difference Result 6933 states and 11354 transitions. [2022-12-14 11:25:55,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:25:55,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 175 [2022-12-14 11:25:55,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:25:55,515 INFO L225 Difference]: With dead ends: 6933 [2022-12-14 11:25:55,515 INFO L226 Difference]: Without dead ends: 4193 [2022-12-14 11:25:55,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:25:55,530 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 209 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:25:55,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1533 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:25:55,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4193 states. [2022-12-14 11:25:55,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4193 to 4193. [2022-12-14 11:25:55,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4193 states, 3130 states have (on average 1.5891373801916933) internal successors, (4974), 3243 states have internal predecessors, (4974), 848 states have call successors, (848), 199 states have call predecessors, (848), 214 states have return successors, (976), 830 states have call predecessors, (976), 843 states have call successors, (976) [2022-12-14 11:25:55,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4193 states to 4193 states and 6798 transitions. [2022-12-14 11:25:55,813 INFO L78 Accepts]: Start accepts. Automaton has 4193 states and 6798 transitions. Word has length 175 [2022-12-14 11:25:55,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:25:55,814 INFO L495 AbstractCegarLoop]: Abstraction has 4193 states and 6798 transitions. [2022-12-14 11:25:55,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 11:25:55,814 INFO L276 IsEmpty]: Start isEmpty. Operand 4193 states and 6798 transitions. [2022-12-14 11:25:55,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-14 11:25:55,826 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:25:55,826 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:25:55,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-14 11:25:56,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 11:25:56,027 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:25:56,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:25:56,027 INFO L85 PathProgramCache]: Analyzing trace with hash -818270402, now seen corresponding path program 1 times [2022-12-14 11:25:56,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:25:56,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826860544] [2022-12-14 11:25:56,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:25:56,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:25:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:25:56,173 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-12-14 11:25:56,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:25:56,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826860544] [2022-12-14 11:25:56,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826860544] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:25:56,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051591395] [2022-12-14 11:25:56,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:25:56,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:25:56,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:25:56,175 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:25:56,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 11:25:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:25:56,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 2057 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:25:56,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:25:56,441 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:25:56,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:25:56,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051591395] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:25:56,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:25:56,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-12-14 11:25:56,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658838765] [2022-12-14 11:25:56,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:25:56,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:25:56,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:25:56,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:25:56,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:25:56,443 INFO L87 Difference]: Start difference. First operand 4193 states and 6798 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 11:25:56,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:25:56,815 INFO L93 Difference]: Finished difference Result 7323 states and 12079 transitions. [2022-12-14 11:25:56,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:25:56,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 178 [2022-12-14 11:25:56,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:25:56,833 INFO L225 Difference]: With dead ends: 7323 [2022-12-14 11:25:56,833 INFO L226 Difference]: Without dead ends: 4388 [2022-12-14 11:25:56,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:25:56,842 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 207 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:25:56,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1533 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:25:56,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4388 states. [2022-12-14 11:25:57,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4388 to 4388. [2022-12-14 11:25:57,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4388 states, 3320 states have (on average 1.6081325301204819) internal successors, (5339), 3433 states have internal predecessors, (5339), 848 states have call successors, (848), 204 states have call predecessors, (848), 219 states have return successors, (976), 830 states have call predecessors, (976), 843 states have call successors, (976) [2022-12-14 11:25:57,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 7163 transitions. [2022-12-14 11:25:57,036 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 7163 transitions. Word has length 178 [2022-12-14 11:25:57,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:25:57,036 INFO L495 AbstractCegarLoop]: Abstraction has 4388 states and 7163 transitions. [2022-12-14 11:25:57,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 11:25:57,036 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 7163 transitions. [2022-12-14 11:25:57,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-12-14 11:25:57,042 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:25:57,042 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:25:57,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 11:25:57,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:25:57,242 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:25:57,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:25:57,243 INFO L85 PathProgramCache]: Analyzing trace with hash -179266160, now seen corresponding path program 1 times [2022-12-14 11:25:57,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:25:57,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146721405] [2022-12-14 11:25:57,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:25:57,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:25:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:25:57,491 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-12-14 11:25:57,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:25:57,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146721405] [2022-12-14 11:25:57,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146721405] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:25:57,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191114169] [2022-12-14 11:25:57,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:25:57,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:25:57,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:25:57,493 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:25:57,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e83d83-556f-495e-9f70-bbb6aaf9523d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 11:25:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:25:57,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 2053 conjuncts, 130 conjunts are in the unsatisfiable core [2022-12-14 11:25:57,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:25:59,409 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 71 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-14 11:25:59,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:26:25,493 WARN L233 SmtUtils]: Spent 25.45s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 11:26:54,862 WARN L233 SmtUtils]: Spent 26.67s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 11:27:20,898 WARN L233 SmtUtils]: Spent 25.22s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 11:27:23,879 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 9813 disjunctions. This might take some time... [2022-12-14 11:27:29,540 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 9813 disjunctions. [2022-12-14 11:27:29,827 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 9813 disjunctions. This might take some time... [2022-12-14 11:27:35,424 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 9813 disjunctions. [2022-12-14 11:27:35,691 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 9813 disjunctions. This might take some time... [2022-12-14 11:27:41,434 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 9813 disjunctions. [2022-12-14 11:27:41,562 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 49188 disjunctions. This might take some time... [2022-12-14 11:30:12,225 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 49188 disjunctions. [2022-12-14 11:30:12,597 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 9813 disjunctions. This might take some time... [2022-12-14 11:30:18,336 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 9813 disjunctions.