./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product30.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_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/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_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/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_f351010b-a5c0-459b-9c96-73631e87f89d/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 d84130cab59568fb669543ac086f4847eedfc87145b3c30d32e19c1d0d03b42f --- 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 05:33:55,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:33:55,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:33:55,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:33:55,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:33:55,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:33:55,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:33:55,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:33:55,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:33:55,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:33:55,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:33:55,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:33:55,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:33:55,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:33:55,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:33:55,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:33:55,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:33:55,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:33:55,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:33:55,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:33:55,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:33:55,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:33:55,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:33:55,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:33:55,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:33:55,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:33:55,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:33:55,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:33:55,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:33:55,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:33:55,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:33:55,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:33:55,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:33:55,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:33:55,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:33:55,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:33:55,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:33:55,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:33:55,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:33:55,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:33:55,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:33:55,481 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:33:55,502 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:33:55,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:33:55,503 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:33:55,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:33:55,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:33:55,504 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:33:55,504 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:33:55,504 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:33:55,504 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:33:55,504 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:33:55,504 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:33:55,505 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:33:55,505 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:33:55,505 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:33:55,505 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:33:55,505 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:33:55,505 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:33:55,506 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:33:55,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:33:55,506 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:33:55,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:33:55,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:33:55,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:33:55,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:33:55,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:33:55,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:33:55,511 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:33:55,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:33:55,511 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:33:55,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:33:55,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:33:55,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:33:55,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:33:55,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:33:55,512 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:33:55,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:33:55,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:33:55,513 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:33:55,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:33:55,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:33:55,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:33:55,513 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_f351010b-a5c0-459b-9c96-73631e87f89d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d84130cab59568fb669543ac086f4847eedfc87145b3c30d32e19c1d0d03b42f [2022-12-14 05:33:55,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:33:55,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:33:55,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:33:55,729 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:33:55,729 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:33:55,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c [2022-12-14 05:33:58,426 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:33:58,638 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:33:58,638 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c [2022-12-14 05:33:58,651 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/data/ea878b0af/d2c08de6075f49e491afa908e2f25702/FLAG21e69f750 [2022-12-14 05:33:58,661 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/data/ea878b0af/d2c08de6075f49e491afa908e2f25702 [2022-12-14 05:33:58,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:33:58,664 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:33:58,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:33:58,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:33:58,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:33:58,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:33:58" (1/1) ... [2022-12-14 05:33:58,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6274d3da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:58, skipping insertion in model container [2022-12-14 05:33:58,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:33:58" (1/1) ... [2022-12-14 05:33:58,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:33:58,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:33:58,979 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_f351010b-a5c0-459b-9c96-73631e87f89d/sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c[61393,61406] [2022-12-14 05:33:59,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:33:59,013 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:33:59,065 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_f351010b-a5c0-459b-9c96-73631e87f89d/sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c[61393,61406] [2022-12-14 05:33:59,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:33:59,091 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:33:59,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:59 WrapperNode [2022-12-14 05:33:59,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:33:59,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:33:59,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:33:59,092 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:33:59,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:59" (1/1) ... [2022-12-14 05:33:59,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:59" (1/1) ... [2022-12-14 05:33:59,139 INFO L138 Inliner]: procedures = 93, calls = 346, calls flagged for inlining = 30, calls inlined = 26, statements flattened = 883 [2022-12-14 05:33:59,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:33:59,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:33:59,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:33:59,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:33:59,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:59" (1/1) ... [2022-12-14 05:33:59,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:59" (1/1) ... [2022-12-14 05:33:59,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:59" (1/1) ... [2022-12-14 05:33:59,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:59" (1/1) ... [2022-12-14 05:33:59,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:59" (1/1) ... [2022-12-14 05:33:59,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:59" (1/1) ... [2022-12-14 05:33:59,171 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:59" (1/1) ... [2022-12-14 05:33:59,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:59" (1/1) ... [2022-12-14 05:33:59,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:33:59,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:33:59,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:33:59,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:33:59,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:59" (1/1) ... [2022-12-14 05:33:59,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:33:59,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:33:59,203 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:33:59,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:33:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-12-14 05:33:59,229 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-12-14 05:33:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:33:59,230 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-12-14 05:33:59,230 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-12-14 05:33:59,230 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-12-14 05:33:59,230 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-12-14 05:33:59,230 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2022-12-14 05:33:59,230 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2022-12-14 05:33:59,230 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-12-14 05:33:59,230 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-12-14 05:33:59,230 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-12-14 05:33:59,230 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-12-14 05:33:59,230 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-12-14 05:33:59,230 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-12-14 05:33:59,230 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-12-14 05:33:59,231 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-12-14 05:33:59,231 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-12-14 05:33:59,231 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-12-14 05:33:59,231 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-14 05:33:59,231 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-14 05:33:59,231 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-14 05:33:59,231 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-14 05:33:59,231 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-14 05:33:59,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-14 05:33:59,231 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-12-14 05:33:59,231 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-12-14 05:33:59,231 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-12-14 05:33:59,232 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-12-14 05:33:59,232 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-12-14 05:33:59,232 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-12-14 05:33:59,232 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-12-14 05:33:59,232 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-12-14 05:33:59,232 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-12-14 05:33:59,232 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-12-14 05:33:59,232 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-12-14 05:33:59,232 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-12-14 05:33:59,232 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-12-14 05:33:59,232 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-12-14 05:33:59,232 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-12-14 05:33:59,232 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-12-14 05:33:59,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:33:59,233 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-12-14 05:33:59,233 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-12-14 05:33:59,233 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-12-14 05:33:59,233 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-12-14 05:33:59,233 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-12-14 05:33:59,233 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-12-14 05:33:59,233 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-12-14 05:33:59,233 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-12-14 05:33:59,233 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-12-14 05:33:59,233 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-12-14 05:33:59,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:33:59,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:33:59,234 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-12-14 05:33:59,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-12-14 05:33:59,360 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:33:59,362 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:34:00,179 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:34:00,654 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:34:00,655 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 05:34:00,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:34:00 BoogieIcfgContainer [2022-12-14 05:34:00,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:34:00,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:34:00,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:34:00,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:34:00,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:33:58" (1/3) ... [2022-12-14 05:34:00,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638de93e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:34:00, skipping insertion in model container [2022-12-14 05:34:00,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:59" (2/3) ... [2022-12-14 05:34:00,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638de93e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:34:00, skipping insertion in model container [2022-12-14 05:34:00,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:34:00" (3/3) ... [2022-12-14 05:34:00,663 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product30.cil.c [2022-12-14 05:34:00,678 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:34:00,678 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:34:00,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:34:00,724 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;@66c9e4e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:34:00,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:34:00,730 INFO L276 IsEmpty]: Start isEmpty. Operand has 416 states, 286 states have (on average 1.597902097902098) internal successors, (457), 306 states have internal predecessors, (457), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2022-12-14 05:34:00,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 05:34:00,745 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:00,746 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 05:34:00,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:00,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:00,750 INFO L85 PathProgramCache]: Analyzing trace with hash -656165804, now seen corresponding path program 1 times [2022-12-14 05:34:00,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:00,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731052664] [2022-12-14 05:34:00,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:00,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 05:34:01,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:01,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731052664] [2022-12-14 05:34:01,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731052664] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:34:01,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963392991] [2022-12-14 05:34:01,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:01,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:01,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:34:01,016 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:34:01,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:34:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:01,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 1230 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 05:34:01,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:34:01,292 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 05:34:01,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:34:01,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963392991] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:01,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:34:01,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2022-12-14 05:34:01,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97433194] [2022-12-14 05:34:01,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:01,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 05:34:01,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:01,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 05:34:01,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 05:34:01,330 INFO L87 Difference]: Start difference. First operand has 416 states, 286 states have (on average 1.597902097902098) internal successors, (457), 306 states have internal predecessors, (457), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-14 05:34:01,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:01,492 INFO L93 Difference]: Finished difference Result 816 states and 1311 transitions. [2022-12-14 05:34:01,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 05:34:01,494 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 58 [2022-12-14 05:34:01,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:01,509 INFO L225 Difference]: With dead ends: 816 [2022-12-14 05:34:01,509 INFO L226 Difference]: Without dead ends: 410 [2022-12-14 05:34:01,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 59 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 05:34:01,519 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:01,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 616 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:34:01,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-12-14 05:34:01,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2022-12-14 05:34:01,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 283 states have (on average 1.5724381625441697) internal successors, (445), 301 states have internal predecessors, (445), 102 states have call successors, (102), 26 states have call predecessors, (102), 24 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2022-12-14 05:34:01,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 646 transitions. [2022-12-14 05:34:01,580 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 646 transitions. Word has length 58 [2022-12-14 05:34:01,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:01,581 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 646 transitions. [2022-12-14 05:34:01,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-14 05:34:01,581 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 646 transitions. [2022-12-14 05:34:01,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-14 05:34:01,585 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:01,585 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-12-14 05:34:01,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:34:01,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 05:34:01,788 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:01,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:01,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1102129054, now seen corresponding path program 1 times [2022-12-14 05:34:01,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:01,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749653507] [2022-12-14 05:34:01,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:01,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:02,267 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 05:34:02,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:02,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749653507] [2022-12-14 05:34:02,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749653507] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:02,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:34:02,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 05:34:02,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483934282] [2022-12-14 05:34:02,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:02,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:34:02,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:02,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:34:02,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:34:02,270 INFO L87 Difference]: Start difference. First operand 410 states and 646 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-12-14 05:34:04,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:04,470 INFO L93 Difference]: Finished difference Result 1706 states and 2748 transitions. [2022-12-14 05:34:04,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:34:04,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 70 [2022-12-14 05:34:04,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:04,483 INFO L225 Difference]: With dead ends: 1706 [2022-12-14 05:34:04,483 INFO L226 Difference]: Without dead ends: 1311 [2022-12-14 05:34:04,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:34:04,486 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 1561 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 2470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:04,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1706 Valid, 1544 Invalid, 2470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-14 05:34:04,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2022-12-14 05:34:04,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1198. [2022-12-14 05:34:04,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 868 states have (on average 1.596774193548387) internal successors, (1386), 903 states have internal predecessors, (1386), 268 states have call successors, (268), 62 states have call predecessors, (268), 61 states have return successors, (286), 247 states have call predecessors, (286), 264 states have call successors, (286) [2022-12-14 05:34:04,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1940 transitions. [2022-12-14 05:34:04,574 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1940 transitions. Word has length 70 [2022-12-14 05:34:04,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:04,574 INFO L495 AbstractCegarLoop]: Abstraction has 1198 states and 1940 transitions. [2022-12-14 05:34:04,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-12-14 05:34:04,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1940 transitions. [2022-12-14 05:34:04,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-12-14 05:34:04,578 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:04,578 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 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] [2022-12-14 05:34:04,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 05:34:04,579 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:04,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:04,579 INFO L85 PathProgramCache]: Analyzing trace with hash 483529226, now seen corresponding path program 1 times [2022-12-14 05:34:04,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:04,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446722838] [2022-12-14 05:34:04,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:04,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:04,876 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 05:34:04,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:04,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446722838] [2022-12-14 05:34:04,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446722838] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:04,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:34:04,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 05:34:04,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989612737] [2022-12-14 05:34:04,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:04,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:34:04,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:04,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:34:04,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:34:04,878 INFO L87 Difference]: Start difference. First operand 1198 states and 1940 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-12-14 05:34:06,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:06,995 INFO L93 Difference]: Finished difference Result 4580 states and 7510 transitions. [2022-12-14 05:34:06,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 05:34:06,996 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 128 [2022-12-14 05:34:06,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:07,011 INFO L225 Difference]: With dead ends: 4580 [2022-12-14 05:34:07,012 INFO L226 Difference]: Without dead ends: 3397 [2022-12-14 05:34:07,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-12-14 05:34:07,020 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 1489 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 3581 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 4288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 3581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:07,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1581 Valid, 1419 Invalid, 4288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 3581 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 05:34:07,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2022-12-14 05:34:07,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 3272. [2022-12-14 05:34:07,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3272 states, 2337 states have (on average 1.5498502353444588) internal successors, (3622), 2419 states have internal predecessors, (3622), 793 states have call successors, (793), 127 states have call predecessors, (793), 141 states have return successors, (929), 759 states have call predecessors, (929), 787 states have call successors, (929) [2022-12-14 05:34:07,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 5344 transitions. [2022-12-14 05:34:07,182 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 5344 transitions. Word has length 128 [2022-12-14 05:34:07,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:07,183 INFO L495 AbstractCegarLoop]: Abstraction has 3272 states and 5344 transitions. [2022-12-14 05:34:07,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-12-14 05:34:07,183 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 5344 transitions. [2022-12-14 05:34:07,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-14 05:34:07,186 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:07,186 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 05:34:07,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 05:34:07,187 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:07,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:07,187 INFO L85 PathProgramCache]: Analyzing trace with hash 622757311, now seen corresponding path program 1 times [2022-12-14 05:34:07,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:07,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128648584] [2022-12-14 05:34:07,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:07,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:07,443 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:34:07,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:07,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128648584] [2022-12-14 05:34:07,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128648584] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:07,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:34:07,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 05:34:07,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061628706] [2022-12-14 05:34:07,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:07,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 05:34:07,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:07,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 05:34:07,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-14 05:34:07,445 INFO L87 Difference]: Start difference. First operand 3272 states and 5344 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-12-14 05:34:09,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:09,955 INFO L93 Difference]: Finished difference Result 9441 states and 15491 transitions. [2022-12-14 05:34:09,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-14 05:34:09,956 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 88 [2022-12-14 05:34:09,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:09,980 INFO L225 Difference]: With dead ends: 9441 [2022-12-14 05:34:09,981 INFO L226 Difference]: Without dead ends: 6186 [2022-12-14 05:34:10,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2022-12-14 05:34:10,006 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 1854 mSDsluCounter, 2074 mSDsCounter, 0 mSdLazyCounter, 5004 mSolverCounterSat, 623 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1939 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 5627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 623 IncrementalHoareTripleChecker+Valid, 5004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:10,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1939 Valid, 2470 Invalid, 5627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [623 Valid, 5004 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-14 05:34:10,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6186 states. [2022-12-14 05:34:10,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6186 to 5253. [2022-12-14 05:34:10,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5253 states, 3823 states have (on average 1.5736332722992414) internal successors, (6016), 3926 states have internal predecessors, (6016), 1168 states have call successors, (1168), 223 states have call predecessors, (1168), 261 states have return successors, (1402), 1149 states have call predecessors, (1402), 1160 states have call successors, (1402) [2022-12-14 05:34:10,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5253 states to 5253 states and 8586 transitions. [2022-12-14 05:34:10,336 INFO L78 Accepts]: Start accepts. Automaton has 5253 states and 8586 transitions. Word has length 88 [2022-12-14 05:34:10,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:10,336 INFO L495 AbstractCegarLoop]: Abstraction has 5253 states and 8586 transitions. [2022-12-14 05:34:10,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-12-14 05:34:10,336 INFO L276 IsEmpty]: Start isEmpty. Operand 5253 states and 8586 transitions. [2022-12-14 05:34:10,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 05:34:10,338 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:10,339 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 05:34:10,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 05:34:10,339 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:10,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:10,339 INFO L85 PathProgramCache]: Analyzing trace with hash -839574721, now seen corresponding path program 1 times [2022-12-14 05:34:10,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:10,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184394059] [2022-12-14 05:34:10,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:10,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:34:10,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:10,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184394059] [2022-12-14 05:34:10,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184394059] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:10,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:34:10,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 05:34:10,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472464888] [2022-12-14 05:34:10,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:10,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 05:34:10,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:10,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 05:34:10,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:34:10,513 INFO L87 Difference]: Start difference. First operand 5253 states and 8586 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 05:34:10,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:10,939 INFO L93 Difference]: Finished difference Result 9492 states and 15602 transitions. [2022-12-14 05:34:10,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 05:34:10,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 93 [2022-12-14 05:34:10,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:10,959 INFO L225 Difference]: With dead ends: 9492 [2022-12-14 05:34:10,959 INFO L226 Difference]: Without dead ends: 5421 [2022-12-14 05:34:10,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:34:10,975 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 6 mSDsluCounter, 3029 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3644 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:10,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3644 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:34:10,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5421 states. [2022-12-14 05:34:11,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5421 to 5358. [2022-12-14 05:34:11,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5358 states, 3898 states have (on average 1.5625962031811185) internal successors, (6091), 4001 states have internal predecessors, (6091), 1168 states have call successors, (1168), 223 states have call predecessors, (1168), 291 states have return successors, (1477), 1179 states have call predecessors, (1477), 1160 states have call successors, (1477) [2022-12-14 05:34:11,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5358 states to 5358 states and 8736 transitions. [2022-12-14 05:34:11,212 INFO L78 Accepts]: Start accepts. Automaton has 5358 states and 8736 transitions. Word has length 93 [2022-12-14 05:34:11,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:11,212 INFO L495 AbstractCegarLoop]: Abstraction has 5358 states and 8736 transitions. [2022-12-14 05:34:11,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 05:34:11,212 INFO L276 IsEmpty]: Start isEmpty. Operand 5358 states and 8736 transitions. [2022-12-14 05:34:11,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 05:34:11,214 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:11,215 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 05:34:11,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 05:34:11,215 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:11,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:11,215 INFO L85 PathProgramCache]: Analyzing trace with hash 23481631, now seen corresponding path program 1 times [2022-12-14 05:34:11,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:11,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100471562] [2022-12-14 05:34:11,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:11,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:11,397 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:34:11,397 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:11,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100471562] [2022-12-14 05:34:11,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100471562] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:11,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:34:11,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 05:34:11,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115024880] [2022-12-14 05:34:11,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:11,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 05:34:11,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:11,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 05:34:11,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:34:11,399 INFO L87 Difference]: Start difference. First operand 5358 states and 8736 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 05:34:11,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:11,813 INFO L93 Difference]: Finished difference Result 9651 states and 15812 transitions. [2022-12-14 05:34:11,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 05:34:11,814 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 93 [2022-12-14 05:34:11,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:11,843 INFO L225 Difference]: With dead ends: 9651 [2022-12-14 05:34:11,843 INFO L226 Difference]: Without dead ends: 5496 [2022-12-14 05:34:11,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:34:11,861 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 6 mSDsluCounter, 3029 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3644 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:11,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3644 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:34:11,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5496 states. [2022-12-14 05:34:12,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5496 to 5373. [2022-12-14 05:34:12,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5373 states, 3913 states have (on average 1.5604395604395604) internal successors, (6106), 4001 states have internal predecessors, (6106), 1168 states have call successors, (1168), 223 states have call predecessors, (1168), 291 states have return successors, (1477), 1194 states have call predecessors, (1477), 1160 states have call successors, (1477) [2022-12-14 05:34:12,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5373 states to 5373 states and 8751 transitions. [2022-12-14 05:34:12,139 INFO L78 Accepts]: Start accepts. Automaton has 5373 states and 8751 transitions. Word has length 93 [2022-12-14 05:34:12,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:12,139 INFO L495 AbstractCegarLoop]: Abstraction has 5373 states and 8751 transitions. [2022-12-14 05:34:12,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 05:34:12,139 INFO L276 IsEmpty]: Start isEmpty. Operand 5373 states and 8751 transitions. [2022-12-14 05:34:12,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-14 05:34:12,141 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:12,141 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 05:34:12,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 05:34:12,142 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:12,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:12,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1743081418, now seen corresponding path program 1 times [2022-12-14 05:34:12,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:12,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439261572] [2022-12-14 05:34:12,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:12,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:12,298 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:34:12,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:12,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439261572] [2022-12-14 05:34:12,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439261572] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:12,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:34:12,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 05:34:12,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081787717] [2022-12-14 05:34:12,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:12,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 05:34:12,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:12,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 05:34:12,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:34:12,300 INFO L87 Difference]: Start difference. First operand 5373 states and 8751 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 05:34:12,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:12,628 INFO L93 Difference]: Finished difference Result 9678 states and 15839 transitions. [2022-12-14 05:34:12,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 05:34:12,628 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 92 [2022-12-14 05:34:12,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:12,647 INFO L225 Difference]: With dead ends: 9678 [2022-12-14 05:34:12,647 INFO L226 Difference]: Without dead ends: 5511 [2022-12-14 05:34:12,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:34:12,661 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 7 mSDsluCounter, 3010 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3620 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:12,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3620 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:34:12,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5511 states. [2022-12-14 05:34:12,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5511 to 5388. [2022-12-14 05:34:12,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5388 states, 3928 states have (on average 1.5582993890020367) internal successors, (6121), 4001 states have internal predecessors, (6121), 1168 states have call successors, (1168), 223 states have call predecessors, (1168), 291 states have return successors, (1477), 1209 states have call predecessors, (1477), 1160 states have call successors, (1477) [2022-12-14 05:34:12,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5388 states to 5388 states and 8766 transitions. [2022-12-14 05:34:12,866 INFO L78 Accepts]: Start accepts. Automaton has 5388 states and 8766 transitions. Word has length 92 [2022-12-14 05:34:12,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:12,867 INFO L495 AbstractCegarLoop]: Abstraction has 5388 states and 8766 transitions. [2022-12-14 05:34:12,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 05:34:12,867 INFO L276 IsEmpty]: Start isEmpty. Operand 5388 states and 8766 transitions. [2022-12-14 05:34:12,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-14 05:34:12,870 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:12,870 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 05:34:12,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 05:34:12,870 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:12,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:12,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1123444679, now seen corresponding path program 1 times [2022-12-14 05:34:12,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:12,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611284061] [2022-12-14 05:34:12,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:12,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:13,084 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:34:13,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:13,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611284061] [2022-12-14 05:34:13,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611284061] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:13,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:34:13,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 05:34:13,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118175221] [2022-12-14 05:34:13,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:13,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 05:34:13,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:13,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 05:34:13,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:34:13,087 INFO L87 Difference]: Start difference. First operand 5388 states and 8766 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2022-12-14 05:34:15,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:15,120 INFO L93 Difference]: Finished difference Result 15115 states and 25208 transitions. [2022-12-14 05:34:15,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 05:34:15,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) Word has length 97 [2022-12-14 05:34:15,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:15,156 INFO L225 Difference]: With dead ends: 15115 [2022-12-14 05:34:15,156 INFO L226 Difference]: Without dead ends: 10573 [2022-12-14 05:34:15,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-14 05:34:15,175 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 2903 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 2426 mSolverCounterSat, 917 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3093 SdHoareTripleChecker+Valid, 2047 SdHoareTripleChecker+Invalid, 3343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 917 IncrementalHoareTripleChecker+Valid, 2426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:15,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3093 Valid, 2047 Invalid, 3343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [917 Valid, 2426 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 05:34:15,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10573 states. [2022-12-14 05:34:15,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10573 to 8935. [2022-12-14 05:34:15,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8935 states, 6406 states have (on average 1.5209178894786137) internal successors, (9743), 6559 states have internal predecessors, (9743), 2019 states have call successors, (2019), 402 states have call predecessors, (2019), 509 states have return successors, (2623), 2053 states have call predecessors, (2623), 2007 states have call successors, (2623) [2022-12-14 05:34:15,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8935 states to 8935 states and 14385 transitions. [2022-12-14 05:34:15,654 INFO L78 Accepts]: Start accepts. Automaton has 8935 states and 14385 transitions. Word has length 97 [2022-12-14 05:34:15,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:15,654 INFO L495 AbstractCegarLoop]: Abstraction has 8935 states and 14385 transitions. [2022-12-14 05:34:15,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2022-12-14 05:34:15,654 INFO L276 IsEmpty]: Start isEmpty. Operand 8935 states and 14385 transitions. [2022-12-14 05:34:15,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-14 05:34:15,658 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:15,658 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 05:34:15,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 05:34:15,658 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:15,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:15,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1477519968, now seen corresponding path program 1 times [2022-12-14 05:34:15,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:15,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002609784] [2022-12-14 05:34:15,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:15,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:15,861 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:34:15,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:15,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002609784] [2022-12-14 05:34:15,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002609784] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:15,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:34:15,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 05:34:15,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967632405] [2022-12-14 05:34:15,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:15,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:34:15,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:15,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:34:15,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:34:15,863 INFO L87 Difference]: Start difference. First operand 8935 states and 14385 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-12-14 05:34:19,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:19,644 INFO L93 Difference]: Finished difference Result 35347 states and 63463 transitions. [2022-12-14 05:34:19,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 05:34:19,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 100 [2022-12-14 05:34:19,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:19,742 INFO L225 Difference]: With dead ends: 35347 [2022-12-14 05:34:19,742 INFO L226 Difference]: Without dead ends: 26427 [2022-12-14 05:34:19,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-14 05:34:19,798 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 2526 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 3793 mSolverCounterSat, 1129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2660 SdHoareTripleChecker+Valid, 1879 SdHoareTripleChecker+Invalid, 4922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1129 IncrementalHoareTripleChecker+Valid, 3793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:19,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2660 Valid, 1879 Invalid, 4922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1129 Valid, 3793 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-14 05:34:19,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26427 states. [2022-12-14 05:34:21,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26427 to 22652. [2022-12-14 05:34:21,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22652 states, 16133 states have (on average 1.501332672162648) internal successors, (24221), 16511 states have internal predecessors, (24221), 5239 states have call successors, (5239), 924 states have call predecessors, (5239), 1279 states have return successors, (8637), 5443 states have call predecessors, (8637), 5217 states have call successors, (8637) [2022-12-14 05:34:21,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22652 states to 22652 states and 38097 transitions. [2022-12-14 05:34:21,261 INFO L78 Accepts]: Start accepts. Automaton has 22652 states and 38097 transitions. Word has length 100 [2022-12-14 05:34:21,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:21,261 INFO L495 AbstractCegarLoop]: Abstraction has 22652 states and 38097 transitions. [2022-12-14 05:34:21,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-12-14 05:34:21,262 INFO L276 IsEmpty]: Start isEmpty. Operand 22652 states and 38097 transitions. [2022-12-14 05:34:21,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-14 05:34:21,264 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:21,264 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 05:34:21,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 05:34:21,264 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:21,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:21,265 INFO L85 PathProgramCache]: Analyzing trace with hash 216738564, now seen corresponding path program 1 times [2022-12-14 05:34:21,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:21,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752656972] [2022-12-14 05:34:21,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:21,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:21,460 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:34:21,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:21,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752656972] [2022-12-14 05:34:21,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752656972] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:21,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:34:21,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 05:34:21,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744409198] [2022-12-14 05:34:21,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:21,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 05:34:21,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:21,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 05:34:21,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:34:21,462 INFO L87 Difference]: Start difference. First operand 22652 states and 38097 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-14 05:34:24,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:24,422 INFO L93 Difference]: Finished difference Result 47169 states and 81881 transitions. [2022-12-14 05:34:24,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 05:34:24,423 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 102 [2022-12-14 05:34:24,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:24,533 INFO L225 Difference]: With dead ends: 47169 [2022-12-14 05:34:24,533 INFO L226 Difference]: Without dead ends: 27324 [2022-12-14 05:34:24,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 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 05:34:24,616 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 1114 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 3248 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 3677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 3248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:24,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1209 Valid, 1544 Invalid, 3677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 3248 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 05:34:24,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27324 states. [2022-12-14 05:34:26,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27324 to 22967. [2022-12-14 05:34:26,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22967 states, 16343 states have (on average 1.4978890044667441) internal successors, (24480), 16770 states have internal predecessors, (24480), 5246 states have call successors, (5246), 980 states have call predecessors, (5246), 1377 states have return successors, (8770), 5443 states have call predecessors, (8770), 5224 states have call successors, (8770) [2022-12-14 05:34:26,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22967 states to 22967 states and 38496 transitions. [2022-12-14 05:34:26,151 INFO L78 Accepts]: Start accepts. Automaton has 22967 states and 38496 transitions. Word has length 102 [2022-12-14 05:34:26,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:26,152 INFO L495 AbstractCegarLoop]: Abstraction has 22967 states and 38496 transitions. [2022-12-14 05:34:26,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-14 05:34:26,152 INFO L276 IsEmpty]: Start isEmpty. Operand 22967 states and 38496 transitions. [2022-12-14 05:34:26,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-14 05:34:26,154 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:26,154 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 05:34:26,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 05:34:26,154 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:26,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:26,154 INFO L85 PathProgramCache]: Analyzing trace with hash -585824755, now seen corresponding path program 1 times [2022-12-14 05:34:26,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:26,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172876159] [2022-12-14 05:34:26,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:26,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:26,244 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 05:34:26,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:26,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172876159] [2022-12-14 05:34:26,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172876159] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:34:26,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958681092] [2022-12-14 05:34:26,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:26,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:26,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:34:26,246 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:34:26,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 05:34:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:26,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 1602 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 05:34:26,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:34:26,516 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 05:34:26,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:34:26,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958681092] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:26,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:34:26,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-12-14 05:34:26,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521826277] [2022-12-14 05:34:26,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:26,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:34:26,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:26,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:34:26,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:34:26,517 INFO L87 Difference]: Start difference. First operand 22967 states and 38496 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 05:34:27,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:27,847 INFO L93 Difference]: Finished difference Result 46213 states and 80575 transitions. [2022-12-14 05:34:27,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:34:27,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 106 [2022-12-14 05:34:27,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:27,945 INFO L225 Difference]: With dead ends: 46213 [2022-12-14 05:34:27,945 INFO L226 Difference]: Without dead ends: 23261 [2022-12-14 05:34:28,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 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 05:34:28,075 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 85 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:28,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1719 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:34:28,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23261 states. [2022-12-14 05:34:29,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23261 to 23261. [2022-12-14 05:34:29,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23261 states, 16588 states have (on average 1.4934892693513384) internal successors, (24774), 17015 states have internal predecessors, (24774), 5246 states have call successors, (5246), 1029 states have call predecessors, (5246), 1426 states have return successors, (8770), 5443 states have call predecessors, (8770), 5224 states have call successors, (8770) [2022-12-14 05:34:29,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23261 states to 23261 states and 38790 transitions. [2022-12-14 05:34:29,395 INFO L78 Accepts]: Start accepts. Automaton has 23261 states and 38790 transitions. Word has length 106 [2022-12-14 05:34:29,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:29,395 INFO L495 AbstractCegarLoop]: Abstraction has 23261 states and 38790 transitions. [2022-12-14 05:34:29,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 05:34:29,395 INFO L276 IsEmpty]: Start isEmpty. Operand 23261 states and 38790 transitions. [2022-12-14 05:34:29,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-14 05:34:29,398 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:29,398 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 05:34:29,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 05:34:29,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:29,600 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:29,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:29,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1928989252, now seen corresponding path program 1 times [2022-12-14 05:34:29,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:29,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117978127] [2022-12-14 05:34:29,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:29,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:29,792 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:34:29,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:29,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117978127] [2022-12-14 05:34:29,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117978127] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:34:29,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957977217] [2022-12-14 05:34:29,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:29,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:29,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:34:29,794 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:34:29,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 05:34:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:30,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 05:34:30,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:34:30,111 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 05:34:30,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:34:30,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957977217] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:30,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:34:30,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-12-14 05:34:30,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134990635] [2022-12-14 05:34:30,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:30,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:34:30,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:30,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:34:30,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:34:30,113 INFO L87 Difference]: Start difference. First operand 23261 states and 38790 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 05:34:31,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:31,650 INFO L93 Difference]: Finished difference Result 46654 states and 80084 transitions. [2022-12-14 05:34:31,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:34:31,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 108 [2022-12-14 05:34:31,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:31,734 INFO L225 Difference]: With dead ends: 46654 [2022-12-14 05:34:31,734 INFO L226 Difference]: Without dead ends: 23212 [2022-12-14 05:34:31,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-14 05:34:31,847 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 91 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:31,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1715 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:34:31,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23212 states. [2022-12-14 05:34:32,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23212 to 23212. [2022-12-14 05:34:32,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23212 states, 16539 states have (on average 1.4860632444525061) internal successors, (24578), 16966 states have internal predecessors, (24578), 5246 states have call successors, (5246), 1029 states have call predecessors, (5246), 1426 states have return successors, (8770), 5443 states have call predecessors, (8770), 5224 states have call successors, (8770) [2022-12-14 05:34:33,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23212 states to 23212 states and 38594 transitions. [2022-12-14 05:34:33,021 INFO L78 Accepts]: Start accepts. Automaton has 23212 states and 38594 transitions. Word has length 108 [2022-12-14 05:34:33,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:33,021 INFO L495 AbstractCegarLoop]: Abstraction has 23212 states and 38594 transitions. [2022-12-14 05:34:33,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 05:34:33,021 INFO L276 IsEmpty]: Start isEmpty. Operand 23212 states and 38594 transitions. [2022-12-14 05:34:33,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-14 05:34:33,023 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:33,023 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 05:34:33,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 05:34:33,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:33,224 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:33,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:33,225 INFO L85 PathProgramCache]: Analyzing trace with hash -123172050, now seen corresponding path program 1 times [2022-12-14 05:34:33,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:33,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794614808] [2022-12-14 05:34:33,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:33,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:33,334 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-14 05:34:33,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:33,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794614808] [2022-12-14 05:34:33,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794614808] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:33,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:34:33,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:34:33,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436928908] [2022-12-14 05:34:33,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:33,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:34:33,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:33,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:34:33,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:34:33,336 INFO L87 Difference]: Start difference. First operand 23212 states and 38594 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-12-14 05:34:34,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:34,731 INFO L93 Difference]: Finished difference Result 46018 states and 78769 transitions. [2022-12-14 05:34:34,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:34:34,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 109 [2022-12-14 05:34:34,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:34,829 INFO L225 Difference]: With dead ends: 46018 [2022-12-14 05:34:34,830 INFO L226 Difference]: Without dead ends: 25102 [2022-12-14 05:34:34,929 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 05:34:34,929 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 216 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:34,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1657 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:34:34,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25102 states. [2022-12-14 05:34:36,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25102 to 25102. [2022-12-14 05:34:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25102 states, 18352 states have (on average 1.4993461203138623) internal successors, (27516), 18856 states have internal predecessors, (27516), 5246 states have call successors, (5246), 1029 states have call predecessors, (5246), 1503 states have return successors, (9100), 5443 states have call predecessors, (9100), 5224 states have call successors, (9100) [2022-12-14 05:34:36,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25102 states to 25102 states and 41862 transitions. [2022-12-14 05:34:36,715 INFO L78 Accepts]: Start accepts. Automaton has 25102 states and 41862 transitions. Word has length 109 [2022-12-14 05:34:36,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:36,715 INFO L495 AbstractCegarLoop]: Abstraction has 25102 states and 41862 transitions. [2022-12-14 05:34:36,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-12-14 05:34:36,715 INFO L276 IsEmpty]: Start isEmpty. Operand 25102 states and 41862 transitions. [2022-12-14 05:34:36,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-14 05:34:36,718 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:36,718 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 05:34:36,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 05:34:36,718 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:36,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:36,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1578420215, now seen corresponding path program 1 times [2022-12-14 05:34:36,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:36,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377069133] [2022-12-14 05:34:36,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:36,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:36,875 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 05:34:36,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:36,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377069133] [2022-12-14 05:34:36,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377069133] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:34:36,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995201245] [2022-12-14 05:34:36,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:36,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:36,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:34:36,877 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:34:36,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 05:34:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:37,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 1610 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:34:37,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:34:37,146 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 05:34:37,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:34:37,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995201245] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:37,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:34:37,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-12-14 05:34:37,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710214149] [2022-12-14 05:34:37,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:37,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:34:37,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:37,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:34:37,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 05:34:37,147 INFO L87 Difference]: Start difference. First operand 25102 states and 41862 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-14 05:34:39,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:39,949 INFO L93 Difference]: Finished difference Result 67917 states and 124367 transitions. [2022-12-14 05:34:39,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:34:39,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 108 [2022-12-14 05:34:39,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:40,152 INFO L225 Difference]: With dead ends: 67917 [2022-12-14 05:34:40,153 INFO L226 Difference]: Without dead ends: 42830 [2022-12-14 05:34:40,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-14 05:34:40,325 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 615 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 2306 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:40,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 2306 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 05:34:40,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42830 states. [2022-12-14 05:34:42,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42830 to 42202. [2022-12-14 05:34:42,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42202 states, 30634 states have (on average 1.4594894561598224) internal successors, (44710), 31497 states have internal predecessors, (44710), 9109 states have call successors, (9109), 1665 states have call predecessors, (9109), 2458 states have return successors, (19924), 9460 states have call predecessors, (19924), 9071 states have call successors, (19924) [2022-12-14 05:34:42,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42202 states to 42202 states and 73743 transitions. [2022-12-14 05:34:42,817 INFO L78 Accepts]: Start accepts. Automaton has 42202 states and 73743 transitions. Word has length 108 [2022-12-14 05:34:42,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:42,817 INFO L495 AbstractCegarLoop]: Abstraction has 42202 states and 73743 transitions. [2022-12-14 05:34:42,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-14 05:34:42,817 INFO L276 IsEmpty]: Start isEmpty. Operand 42202 states and 73743 transitions. [2022-12-14 05:34:42,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-14 05:34:42,820 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:42,820 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 05:34:42,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 05:34:43,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 05:34:43,022 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:43,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:43,023 INFO L85 PathProgramCache]: Analyzing trace with hash 2142545761, now seen corresponding path program 1 times [2022-12-14 05:34:43,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:43,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579022583] [2022-12-14 05:34:43,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:43,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:43,233 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:34:43,233 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:43,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579022583] [2022-12-14 05:34:43,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579022583] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:34:43,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094317441] [2022-12-14 05:34:43,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:43,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:43,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:34:43,234 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:34:43,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 05:34:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:43,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 05:34:43,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:34:43,541 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 05:34:43,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:34:43,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094317441] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:43,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:34:43,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-12-14 05:34:43,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769646779] [2022-12-14 05:34:43,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:43,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:34:43,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:43,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:34:43,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-14 05:34:43,543 INFO L87 Difference]: Start difference. First operand 42202 states and 73743 transitions. Second operand has 6 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-14 05:34:47,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:47,798 INFO L93 Difference]: Finished difference Result 93628 states and 177911 transitions. [2022-12-14 05:34:47,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 05:34:47,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 109 [2022-12-14 05:34:47,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:48,126 INFO L225 Difference]: With dead ends: 93628 [2022-12-14 05:34:48,126 INFO L226 Difference]: Without dead ends: 51441 [2022-12-14 05:34:48,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-12-14 05:34:48,295 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 698 mSDsluCounter, 2435 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 3316 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:48,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 3316 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 05:34:48,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51441 states. [2022-12-14 05:34:51,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51441 to 51218. [2022-12-14 05:34:51,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51218 states, 37443 states have (on average 1.437117752316855) internal successors, (53810), 38645 states have internal predecessors, (53810), 10390 states have call successors, (10390), 2262 states have call predecessors, (10390), 3384 states have return successors, (38799), 10731 states have call predecessors, (38799), 10320 states have call successors, (38799) [2022-12-14 05:34:51,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51218 states to 51218 states and 102999 transitions. [2022-12-14 05:34:51,952 INFO L78 Accepts]: Start accepts. Automaton has 51218 states and 102999 transitions. Word has length 109 [2022-12-14 05:34:51,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:51,952 INFO L495 AbstractCegarLoop]: Abstraction has 51218 states and 102999 transitions. [2022-12-14 05:34:51,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-14 05:34:51,952 INFO L276 IsEmpty]: Start isEmpty. Operand 51218 states and 102999 transitions. [2022-12-14 05:34:51,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-14 05:34:51,954 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:51,954 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:34:51,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 05:34:52,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 05:34:52,156 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:52,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:52,158 INFO L85 PathProgramCache]: Analyzing trace with hash -174630930, now seen corresponding path program 1 times [2022-12-14 05:34:52,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:52,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463577340] [2022-12-14 05:34:52,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:52,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:52,298 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 05:34:52,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:52,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463577340] [2022-12-14 05:34:52,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463577340] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:34:52,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323732511] [2022-12-14 05:34:52,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:52,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:52,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:34:52,300 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:34:52,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 05:34:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:52,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 05:34:52,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:34:52,516 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 05:34:52,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:34:52,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323732511] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:52,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:34:52,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-12-14 05:34:52,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811933620] [2022-12-14 05:34:52,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:52,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:34:52,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:52,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:34:52,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 05:34:52,518 INFO L87 Difference]: Start difference. First operand 51218 states and 102999 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 05:34:56,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:56,795 INFO L93 Difference]: Finished difference Result 104543 states and 233941 transitions. [2022-12-14 05:34:56,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:34:56,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 109 [2022-12-14 05:34:56,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:57,138 INFO L225 Difference]: With dead ends: 104543 [2022-12-14 05:34:57,138 INFO L226 Difference]: Without dead ends: 53348 [2022-12-14 05:34:57,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 05:34:57,671 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 2 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2445 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:57,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2445 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:34:57,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53348 states. [2022-12-14 05:35:01,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53348 to 52337. [2022-12-14 05:35:01,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52337 states, 38407 states have (on average 1.4261202384981904) internal successors, (54773), 39358 states have internal predecessors, (54773), 10390 states have call successors, (10390), 2262 states have call predecessors, (10390), 3539 states have return successors, (40083), 11137 states have call predecessors, (40083), 10320 states have call successors, (40083) [2022-12-14 05:35:01,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52337 states to 52337 states and 105246 transitions. [2022-12-14 05:35:01,652 INFO L78 Accepts]: Start accepts. Automaton has 52337 states and 105246 transitions. Word has length 109 [2022-12-14 05:35:01,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:35:01,653 INFO L495 AbstractCegarLoop]: Abstraction has 52337 states and 105246 transitions. [2022-12-14 05:35:01,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 05:35:01,653 INFO L276 IsEmpty]: Start isEmpty. Operand 52337 states and 105246 transitions. [2022-12-14 05:35:01,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-14 05:35:01,655 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:35:01,655 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:35:01,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 05:35:01,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:35:01,856 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:35:01,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:35:01,857 INFO L85 PathProgramCache]: Analyzing trace with hash -392327113, now seen corresponding path program 1 times [2022-12-14 05:35:01,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:35:01,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135206051] [2022-12-14 05:35:01,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:35:01,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:35:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:35:01,989 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 05:35:01,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:35:01,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135206051] [2022-12-14 05:35:01,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135206051] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:35:01,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655623073] [2022-12-14 05:35:01,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:35:01,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:35:01,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:35:01,991 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:35:01,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 05:35:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:35:02,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 1617 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:35:02,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:35:02,270 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 05:35:02,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:35:02,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655623073] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:35:02,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:35:02,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-12-14 05:35:02,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648243374] [2022-12-14 05:35:02,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:35:02,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:35:02,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:35:02,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:35:02,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:35:02,272 INFO L87 Difference]: Start difference. First operand 52337 states and 105246 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 05:35:06,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:35:06,581 INFO L93 Difference]: Finished difference Result 106444 states and 230237 transitions. [2022-12-14 05:35:06,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:35:06,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 111 [2022-12-14 05:35:06,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:35:06,840 INFO L225 Difference]: With dead ends: 106444 [2022-12-14 05:35:06,840 INFO L226 Difference]: Without dead ends: 54131 [2022-12-14 05:35:07,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:35:07,321 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 19 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:35:07,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1675 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:35:07,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54131 states. [2022-12-14 05:35:10,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54131 to 53813. [2022-12-14 05:35:10,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53813 states, 39845 states have (on average 1.4330279834358137) internal successors, (57099), 40834 states have internal predecessors, (57099), 10390 states have call successors, (10390), 2262 states have call predecessors, (10390), 3577 states have return successors, (40264), 11137 states have call predecessors, (40264), 10320 states have call successors, (40264) [2022-12-14 05:35:11,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53813 states to 53813 states and 107753 transitions. [2022-12-14 05:35:11,351 INFO L78 Accepts]: Start accepts. Automaton has 53813 states and 107753 transitions. Word has length 111 [2022-12-14 05:35:11,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:35:11,352 INFO L495 AbstractCegarLoop]: Abstraction has 53813 states and 107753 transitions. [2022-12-14 05:35:11,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 05:35:11,352 INFO L276 IsEmpty]: Start isEmpty. Operand 53813 states and 107753 transitions. [2022-12-14 05:35:11,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-14 05:35:11,355 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:35:11,355 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 05:35:11,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 05:35:11,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 05:35:11,556 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:35:11,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:35:11,557 INFO L85 PathProgramCache]: Analyzing trace with hash 648040134, now seen corresponding path program 1 times [2022-12-14 05:35:11,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:35:11,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962963435] [2022-12-14 05:35:11,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:35:11,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:35:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:35:11,699 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 05:35:11,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:35:11,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962963435] [2022-12-14 05:35:11,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962963435] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:35:11,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672158679] [2022-12-14 05:35:11,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:35:11,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:35:11,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:35:11,701 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:35:11,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 05:35:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:35:11,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 1620 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:35:11,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:35:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 05:35:11,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:35:11,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672158679] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:35:11,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:35:11,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-12-14 05:35:11,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087817063] [2022-12-14 05:35:11,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:35:11,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:35:11,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:35:11,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:35:11,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 05:35:11,970 INFO L87 Difference]: Start difference. First operand 53813 states and 107753 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-14 05:35:20,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:35:20,049 INFO L93 Difference]: Finished difference Result 143425 states and 334538 transitions. [2022-12-14 05:35:20,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:35:20,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 114 [2022-12-14 05:35:20,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:35:20,722 INFO L225 Difference]: With dead ends: 143425 [2022-12-14 05:35:20,722 INFO L226 Difference]: Without dead ends: 92729 [2022-12-14 05:35:21,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-14 05:35:21,427 INFO L413 NwaCegarLoop]: 788 mSDtfsCounter, 637 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 2122 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 05:35:21,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 2122 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 05:35:21,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92729 states. [2022-12-14 05:35:28,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92729 to 90311. [2022-12-14 05:35:28,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90311 states, 66451 states have (on average 1.4288724022211856) internal successors, (94950), 68185 states have internal predecessors, (94950), 18074 states have call successors, (18074), 3686 states have call predecessors, (18074), 5785 states have return successors, (90977), 19248 states have call predecessors, (90977), 17953 states have call successors, (90977) [2022-12-14 05:35:30,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90311 states to 90311 states and 204001 transitions. [2022-12-14 05:35:30,089 INFO L78 Accepts]: Start accepts. Automaton has 90311 states and 204001 transitions. Word has length 114 [2022-12-14 05:35:30,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:35:30,090 INFO L495 AbstractCegarLoop]: Abstraction has 90311 states and 204001 transitions. [2022-12-14 05:35:30,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-14 05:35:30,090 INFO L276 IsEmpty]: Start isEmpty. Operand 90311 states and 204001 transitions. [2022-12-14 05:35:30,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-14 05:35:30,094 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:35:30,095 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 05:35:30,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 05:35:30,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 05:35:30,297 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:35:30,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:35:30,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1973545847, now seen corresponding path program 1 times [2022-12-14 05:35:30,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:35:30,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537691980] [2022-12-14 05:35:30,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:35:30,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:35:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:35:30,453 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 05:35:30,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:35:30,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537691980] [2022-12-14 05:35:30,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537691980] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:35:30,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016001942] [2022-12-14 05:35:30,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:35:30,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:35:30,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:35:30,454 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:35:30,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 05:35:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:35:30,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:35:30,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:35:30,664 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 05:35:30,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:35:30,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016001942] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:35:30,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:35:30,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-12-14 05:35:30,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826988230] [2022-12-14 05:35:30,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:35:30,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:35:30,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:35:30,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:35:30,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:35:30,666 INFO L87 Difference]: Start difference. First operand 90311 states and 204001 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 05:35:39,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:35:39,032 INFO L93 Difference]: Finished difference Result 182466 states and 460833 transitions. [2022-12-14 05:35:39,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:35:39,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 113 [2022-12-14 05:35:39,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:35:39,877 INFO L225 Difference]: With dead ends: 182466 [2022-12-14 05:35:39,877 INFO L226 Difference]: Without dead ends: 92179 [2022-12-14 05:35:42,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:35:42,108 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 4 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:35:42,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1801 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:35:42,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92179 states. [2022-12-14 05:35:48,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92179 to 90599. [2022-12-14 05:35:48,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90599 states, 66739 states have (on average 1.4202190623173856) internal successors, (94784), 68473 states have internal predecessors, (94784), 18074 states have call successors, (18074), 3686 states have call predecessors, (18074), 5785 states have return successors, (90977), 19248 states have call predecessors, (90977), 17953 states have call successors, (90977) [2022-12-14 05:35:50,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90599 states to 90599 states and 203835 transitions. [2022-12-14 05:35:50,365 INFO L78 Accepts]: Start accepts. Automaton has 90599 states and 203835 transitions. Word has length 113 [2022-12-14 05:35:50,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:35:50,365 INFO L495 AbstractCegarLoop]: Abstraction has 90599 states and 203835 transitions. [2022-12-14 05:35:50,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 05:35:50,366 INFO L276 IsEmpty]: Start isEmpty. Operand 90599 states and 203835 transitions. [2022-12-14 05:35:50,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-14 05:35:50,369 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:35:50,369 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 05:35:50,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 05:35:50,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:35:50,570 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:35:50,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:35:50,572 INFO L85 PathProgramCache]: Analyzing trace with hash -152966378, now seen corresponding path program 1 times [2022-12-14 05:35:50,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:35:50,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271291968] [2022-12-14 05:35:50,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:35:50,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:35:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:35:50,689 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 05:35:50,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:35:50,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271291968] [2022-12-14 05:35:50,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271291968] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:35:50,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732875476] [2022-12-14 05:35:50,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:35:50,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:35:50,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:35:50,691 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:35:50,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 05:35:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:35:50,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 1620 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:35:50,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:35:50,898 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 05:35:50,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:35:50,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732875476] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:35:50,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:35:50,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-12-14 05:35:50,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712458415] [2022-12-14 05:35:50,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:35:50,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:35:50,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:35:50,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:35:50,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 05:35:50,900 INFO L87 Difference]: Start difference. First operand 90599 states and 203835 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-14 05:36:02,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:36:02,750 INFO L93 Difference]: Finished difference Result 216403 states and 547001 transitions. [2022-12-14 05:36:02,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:36:02,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 114 [2022-12-14 05:36:02,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:36:03,881 INFO L225 Difference]: With dead ends: 216403 [2022-12-14 05:36:03,881 INFO L226 Difference]: Without dead ends: 128991 [2022-12-14 05:36:05,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-14 05:36:05,488 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 655 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 05:36:05,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 2125 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 05:36:05,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128991 states. [2022-12-14 05:36:16,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128991 to 126897. [2022-12-14 05:36:16,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126897 states, 93171 states have (on average 1.4189501024997049) internal successors, (132205), 95648 states have internal predecessors, (132205), 25744 states have call successors, (25744), 5098 states have call predecessors, (25744), 7981 states have return successors, (158157), 27347 states have call predecessors, (158157), 25572 states have call successors, (158157) [2022-12-14 05:36:19,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126897 states to 126897 states and 316106 transitions. [2022-12-14 05:36:19,321 INFO L78 Accepts]: Start accepts. Automaton has 126897 states and 316106 transitions. Word has length 114 [2022-12-14 05:36:19,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:36:19,321 INFO L495 AbstractCegarLoop]: Abstraction has 126897 states and 316106 transitions. [2022-12-14 05:36:19,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-14 05:36:19,321 INFO L276 IsEmpty]: Start isEmpty. Operand 126897 states and 316106 transitions. [2022-12-14 05:36:19,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-14 05:36:19,325 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:36:19,325 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 05:36:19,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 05:36:19,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:36:19,527 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:36:19,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:36:19,528 INFO L85 PathProgramCache]: Analyzing trace with hash 323461084, now seen corresponding path program 1 times [2022-12-14 05:36:19,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:36:19,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266566041] [2022-12-14 05:36:19,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:36:19,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:36:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:36:19,816 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 05:36:19,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:36:19,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266566041] [2022-12-14 05:36:19,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266566041] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:36:19,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005034304] [2022-12-14 05:36:19,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:36:19,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:36:19,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:36:19,817 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:36:19,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 05:36:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:36:19,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 1622 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:36:19,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:36:20,028 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 05:36:20,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:36:20,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005034304] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:36:20,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:36:20,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-12-14 05:36:20,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115168685] [2022-12-14 05:36:20,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:36:20,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:36:20,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:36:20,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:36:20,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 05:36:20,030 INFO L87 Difference]: Start difference. First operand 126897 states and 316106 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-14 05:36:37,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:36:37,359 INFO L93 Difference]: Finished difference Result 281084 states and 747405 transitions. [2022-12-14 05:36:37,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:36:37,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 116 [2022-12-14 05:36:37,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:36:38,970 INFO L225 Difference]: With dead ends: 281084 [2022-12-14 05:36:38,970 INFO L226 Difference]: Without dead ends: 157432 [2022-12-14 05:36:42,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-14 05:36:42,191 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 655 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 2372 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 05:36:42,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 2372 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 05:36:42,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157432 states. [2022-12-14 05:36:57,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157432 to 153505. [2022-12-14 05:36:57,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153505 states, 111566 states have (on average 1.420683720846853) internal successors, (158500), 115005 states have internal predecessors, (158500), 32321 states have call successors, (32321), 6252 states have call predecessors, (32321), 9617 states have return successors, (212587), 33832 states have call predecessors, (212587), 32114 states have call successors, (212587) [2022-12-14 05:37:00,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153505 states to 153505 states and 403408 transitions. [2022-12-14 05:37:00,787 INFO L78 Accepts]: Start accepts. Automaton has 153505 states and 403408 transitions. Word has length 116 [2022-12-14 05:37:00,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:37:00,788 INFO L495 AbstractCegarLoop]: Abstraction has 153505 states and 403408 transitions. [2022-12-14 05:37:00,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-14 05:37:00,788 INFO L276 IsEmpty]: Start isEmpty. Operand 153505 states and 403408 transitions. [2022-12-14 05:37:00,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-14 05:37:00,792 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:37:00,792 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 05:37:00,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 05:37:00,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-14 05:37:00,993 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:37:00,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:37:00,995 INFO L85 PathProgramCache]: Analyzing trace with hash -2018793949, now seen corresponding path program 1 times [2022-12-14 05:37:00,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:37:00,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443167922] [2022-12-14 05:37:00,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:37:00,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:37:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:37:01,134 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-14 05:37:01,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:37:01,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443167922] [2022-12-14 05:37:01,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443167922] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:37:01,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093334426] [2022-12-14 05:37:01,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:37:01,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:37:01,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:37:01,135 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:37:01,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 05:37:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:37:01,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 1619 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 05:37:01,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:37:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 05:37:01,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:37:01,532 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 05:37:01,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093334426] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:37:01,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1666678962] [2022-12-14 05:37:01,550 INFO L159 IcfgInterpreter]: Started Sifa with 102 locations of interest [2022-12-14 05:37:01,550 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:37:01,552 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:37:01,556 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:37:01,556 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:37:05,517 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 580 for LOIs [2022-12-14 05:37:09,207 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__twothirdsfull with input of size 576 for LOIs [2022-12-14 05:37:09,452 INFO L197 IcfgInterpreter]: Interpreting procedure existInLiftCallsInDirection with input of size 47 for LOIs [2022-12-14 05:37:09,468 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 443 for LOIs [2022-12-14 05:37:09,536 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 546 for LOIs [2022-12-14 05:37:11,888 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 796 for LOIs [2022-12-14 05:40:28,349 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 645 for LOIs [2022-12-14 05:40:28,808 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:40:57,062 WARN L233 SmtUtils]: Spent 11.61s on a formula simplification. DAG size of input: 796 DAG size of output: 661 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:41:12,890 WARN L233 SmtUtils]: Spent 13.07s on a formula simplification. DAG size of input: 1138 DAG size of output: 714 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:41:42,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1666678962] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:41:42,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:41:42,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [5, 6, 7] total 44 [2022-12-14 05:41:42,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14304798] [2022-12-14 05:41:42,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:41:42,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-14 05:41:42,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:41:42,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-14 05:41:42,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1678, Unknown=0, NotChecked=0, Total=1892 [2022-12-14 05:41:42,419 INFO L87 Difference]: Start difference. First operand 153505 states and 403408 transitions. Second operand has 32 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 21 states have internal predecessors, (72), 10 states have call successors, (19), 8 states have call predecessors, (19), 6 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2022-12-14 05:42:01,623 WARN L233 SmtUtils]: Spent 6.66s on a formula simplification. DAG size of input: 712 DAG size of output: 562 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:42:54,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:42:54,699 INFO L93 Difference]: Finished difference Result 307082 states and 806952 transitions. [2022-12-14 05:42:54,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-14 05:42:54,700 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 21 states have internal predecessors, (72), 10 states have call successors, (19), 8 states have call predecessors, (19), 6 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) Word has length 116 [2022-12-14 05:42:54,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:42:56,556 INFO L225 Difference]: With dead ends: 307082 [2022-12-14 05:42:56,556 INFO L226 Difference]: Without dead ends: 153600 [2022-12-14 05:42:59,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 304 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 94.3s TimeCoverageRelationStatistics Valid=252, Invalid=2100, Unknown=0, NotChecked=0, Total=2352 [2022-12-14 05:42:59,602 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 109 mSDsluCounter, 5786 mSDsCounter, 0 mSdLazyCounter, 8770 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 6337 SdHoareTripleChecker+Invalid, 8796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 8770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.7s IncrementalHoareTripleChecker+Time [2022-12-14 05:42:59,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 6337 Invalid, 8796 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 8770 Invalid, 0 Unknown, 0 Unchecked, 35.7s Time] [2022-12-14 05:42:59,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153600 states. [2022-12-14 05:43:14,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153600 to 153533. [2022-12-14 05:43:14,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153533 states, 111587 states have (on average 1.4206224739440974) internal successors, (158523), 115025 states have internal predecessors, (158523), 32324 states have call successors, (32324), 6257 states have call predecessors, (32324), 9621 states have return successors, (212591), 33835 states have call predecessors, (212591), 32117 states have call successors, (212591) [2022-12-14 05:43:18,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153533 states to 153533 states and 403438 transitions. [2022-12-14 05:43:18,544 INFO L78 Accepts]: Start accepts. Automaton has 153533 states and 403438 transitions. Word has length 116 [2022-12-14 05:43:18,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:43:18,545 INFO L495 AbstractCegarLoop]: Abstraction has 153533 states and 403438 transitions. [2022-12-14 05:43:18,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 21 states have internal predecessors, (72), 10 states have call successors, (19), 8 states have call predecessors, (19), 6 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2022-12-14 05:43:18,545 INFO L276 IsEmpty]: Start isEmpty. Operand 153533 states and 403438 transitions. [2022-12-14 05:43:18,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-12-14 05:43:18,552 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:43:18,553 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 05:43:18,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 05:43:18,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:43:18,755 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:43:18,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:43:18,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1961230507, now seen corresponding path program 1 times [2022-12-14 05:43:18,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:43:18,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185366291] [2022-12-14 05:43:18,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:18,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:43:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:18,913 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-14 05:43:18,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:43:18,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185366291] [2022-12-14 05:43:18,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185366291] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:43:18,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:43:18,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 05:43:18,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614967620] [2022-12-14 05:43:18,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:43:18,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:43:18,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:43:18,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:43:18,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:43:18,914 INFO L87 Difference]: Start difference. First operand 153533 states and 403438 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 05:43:40,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:43:40,884 INFO L93 Difference]: Finished difference Result 336751 states and 928185 transitions. [2022-12-14 05:43:40,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:43:40,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 119 [2022-12-14 05:43:40,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:43:42,998 INFO L225 Difference]: With dead ends: 336751 [2022-12-14 05:43:42,998 INFO L226 Difference]: Without dead ends: 185530 [2022-12-14 05:43:48,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:43:48,716 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 177 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:43:48,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2539 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:43:48,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185530 states. [2022-12-14 05:44:05,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185530 to 154529. [2022-12-14 05:44:05,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154529 states, 112583 states have (on average 1.4169013083680484) internal successors, (159519), 116021 states have internal predecessors, (159519), 32324 states have call successors, (32324), 6257 states have call predecessors, (32324), 9621 states have return successors, (212591), 33835 states have call predecessors, (212591), 32117 states have call successors, (212591) [2022-12-14 05:44:09,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154529 states to 154529 states and 404434 transitions. [2022-12-14 05:44:09,180 INFO L78 Accepts]: Start accepts. Automaton has 154529 states and 404434 transitions. Word has length 119 [2022-12-14 05:44:09,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:44:09,180 INFO L495 AbstractCegarLoop]: Abstraction has 154529 states and 404434 transitions. [2022-12-14 05:44:09,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 05:44:09,181 INFO L276 IsEmpty]: Start isEmpty. Operand 154529 states and 404434 transitions. [2022-12-14 05:44:09,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-12-14 05:44:09,185 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:44:09,185 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 05:44:09,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-14 05:44:09,185 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:44:09,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:44:09,185 INFO L85 PathProgramCache]: Analyzing trace with hash 111907458, now seen corresponding path program 1 times [2022-12-14 05:44:09,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:44:09,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634022462] [2022-12-14 05:44:09,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:44:09,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:44:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:44:09,294 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 05:44:09,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:44:09,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634022462] [2022-12-14 05:44:09,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634022462] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:44:09,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420473508] [2022-12-14 05:44:09,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:44:09,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:44:09,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:44:09,295 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:44:09,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f351010b-a5c0-459b-9c96-73631e87f89d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 05:44:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:44:09,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 1629 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 05:44:09,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:44:09,517 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 05:44:09,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:44:09,641 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:44:09,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420473508] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:44:09,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [327729970] [2022-12-14 05:44:09,644 INFO L159 IcfgInterpreter]: Started Sifa with 106 locations of interest [2022-12-14 05:44:09,644 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:44:09,644 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:44:09,644 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:44:09,644 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:44:13,313 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 580 for LOIs [2022-12-14 05:44:46,023 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__twothirdsfull with input of size 578 for LOIs [2022-12-14 05:44:50,638 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 106 for LOIs [2022-12-14 05:44:51,093 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 77 for LOIs [2022-12-14 05:44:51,107 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection__wrappee__empty with input of size 120 for LOIs [2022-12-14 05:44:51,614 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 98 for LOIs [2022-12-14 05:44:51,636 INFO L197 IcfgInterpreter]: Interpreting procedure existInLiftCallsInDirection with input of size 464 for LOIs [2022-12-14 05:44:53,711 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 105 for LOIs [2022-12-14 05:44:53,987 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 77 for LOIs [2022-12-14 05:44:53,993 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 443 for LOIs [2022-12-14 05:44:54,061 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 546 for LOIs [2022-12-14 05:44:56,412 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 796 for LOIs [2022-12-14 05:45:23,068 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 645 for LOIs [2022-12-14 05:45:23,535 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:45:51,855 WARN L233 SmtUtils]: Spent 12.01s on a formula simplification. DAG size of input: 796 DAG size of output: 661 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)