./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd1b1c9-2790-4af1-a607-ab4b4fdc1171/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd1b1c9-2790-4af1-a607-ab4b4fdc1171/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd1b1c9-2790-4af1-a607-ab4b4fdc1171/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd1b1c9-2790-4af1-a607-ab4b4fdc1171/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd1b1c9-2790-4af1-a607-ab4b4fdc1171/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd1b1c9-2790-4af1-a607-ab4b4fdc1171/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b5032f6ecc7a7304ce28757cb2a6aad82a2091f27bc978e38426a37817981d0c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:41:40,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:41:40,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:41:40,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:41:40,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:41:40,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:41:40,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:41:40,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:41:40,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:41:40,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:41:40,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:41:40,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:41:40,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:41:40,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:41:40,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:41:40,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:41:40,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:41:40,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:41:40,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:41:40,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:41:40,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:41:40,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:41:40,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:41:40,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:41:40,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:41:40,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:41:40,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:41:40,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:41:40,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:41:40,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:41:40,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:41:40,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:41:40,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:41:40,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:41:40,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:41:40,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:41:40,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:41:40,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:41:40,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:41:40,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:41:40,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:41:40,381 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd1b1c9-2790-4af1-a607-ab4b4fdc1171/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:41:40,434 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:41:40,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:41:40,435 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:41:40,436 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:41:40,436 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:41:40,437 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:41:40,437 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:41:40,437 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:41:40,438 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:41:40,438 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:41:40,438 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:41:40,439 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:41:40,439 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:41:40,439 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:41:40,439 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:41:40,440 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:41:40,440 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:41:40,440 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:41:40,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:41:40,442 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:41:40,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:41:40,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:41:40,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:41:40,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:41:40,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:41:40,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:41:40,449 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:41:40,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:41:40,451 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:41:40,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:41:40,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:41:40,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:41:40,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:41:40,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:41:40,452 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:41:40,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:41:40,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:41:40,455 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:41:40,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:41:40,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:41:40,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:41:40,456 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_6fd1b1c9-2790-4af1-a607-ab4b4fdc1171/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd1b1c9-2790-4af1-a607-ab4b4fdc1171/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5032f6ecc7a7304ce28757cb2a6aad82a2091f27bc978e38426a37817981d0c [2022-11-03 03:41:40,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:41:40,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:41:40,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:41:40,927 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:41:40,928 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:41:40,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd1b1c9-2790-4af1-a607-ab4b4fdc1171/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2022-11-03 03:41:41,024 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd1b1c9-2790-4af1-a607-ab4b4fdc1171/bin/utaipan-7li7fVZpFI/data/c4bc8a386/f1ae7d0bed724562ab68bb641482e08a/FLAG164c1d008 [2022-11-03 03:41:41,929 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:41:41,929 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd1b1c9-2790-4af1-a607-ab4b4fdc1171/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2022-11-03 03:41:41,957 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd1b1c9-2790-4af1-a607-ab4b4fdc1171/bin/utaipan-7li7fVZpFI/data/c4bc8a386/f1ae7d0bed724562ab68bb641482e08a/FLAG164c1d008 [2022-11-03 03:41:42,073 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd1b1c9-2790-4af1-a607-ab4b4fdc1171/bin/utaipan-7li7fVZpFI/data/c4bc8a386/f1ae7d0bed724562ab68bb641482e08a [2022-11-03 03:41:42,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:41:42,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:41:42,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:41:42,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:41:42,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:41:42,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:41:42" (1/1) ... [2022-11-03 03:41:42,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7763fcec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:42, skipping insertion in model container [2022-11-03 03:41:42,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:41:42" (1/1) ... [2022-11-03 03:41:42,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:41:42,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:41:42,575 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd1b1c9-2790-4af1-a607-ab4b4fdc1171/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c[1545,1558] [2022-11-03 03:41:43,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:41:43,140 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:41:43,154 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd1b1c9-2790-4af1-a607-ab4b4fdc1171/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c[1545,1558] [2022-11-03 03:41:43,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:41:43,288 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:41:43,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:43 WrapperNode [2022-11-03 03:41:43,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:41:43,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:41:43,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:41:43,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:41:43,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:43" (1/1) ... [2022-11-03 03:41:43,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:43" (1/1) ... [2022-11-03 03:41:43,381 INFO L138 Inliner]: procedures = 95, calls = 348, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 909 [2022-11-03 03:41:43,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:41:43,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:41:43,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:41:43,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:41:43,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:43" (1/1) ... [2022-11-03 03:41:43,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:43" (1/1) ... [2022-11-03 03:41:43,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:43" (1/1) ... [2022-11-03 03:41:43,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:43" (1/1) ... [2022-11-03 03:41:43,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:43" (1/1) ... [2022-11-03 03:41:43,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:43" (1/1) ... [2022-11-03 03:41:43,434 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:43" (1/1) ... [2022-11-03 03:41:43,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:43" (1/1) ... [2022-11-03 03:41:43,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:41:43,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:41:43,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:41:43,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:41:43,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:43" (1/1) ... [2022-11-03 03:41:43,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:41:43,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd1b1c9-2790-4af1-a607-ab4b4fdc1171/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:41:43,505 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd1b1c9-2790-4af1-a607-ab4b4fdc1171/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:41:43,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd1b1c9-2790-4af1-a607-ab4b4fdc1171/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:41:43,584 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-03 03:41:43,585 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-03 03:41:43,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:41:43,585 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-03 03:41:43,585 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-03 03:41:43,585 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-03 03:41:43,585 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-03 03:41:43,585 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-03 03:41:43,586 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-03 03:41:43,586 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-03 03:41:43,586 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-03 03:41:43,586 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-03 03:41:43,586 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-03 03:41:43,586 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-11-03 03:41:43,586 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-11-03 03:41:43,586 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-03 03:41:43,587 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-03 03:41:43,587 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-03 03:41:43,587 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-03 03:41:43,587 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-03 03:41:43,587 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-03 03:41:43,587 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-03 03:41:43,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-03 03:41:43,588 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-03 03:41:43,588 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-03 03:41:43,588 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-03 03:41:43,588 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-03 03:41:43,589 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-03 03:41:43,589 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-03 03:41:43,589 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-03 03:41:43,589 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-03 03:41:43,589 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-03 03:41:43,589 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-03 03:41:43,589 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-03 03:41:43,589 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-03 03:41:43,590 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-03 03:41:43,590 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-03 03:41:43,590 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-03 03:41:43,590 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-03 03:41:43,590 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-03 03:41:43,590 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-03 03:41:43,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:41:43,591 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-03 03:41:43,591 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-03 03:41:43,591 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-03 03:41:43,592 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-03 03:41:43,593 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-03 03:41:43,593 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-03 03:41:43,594 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-03 03:41:43,595 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-03 03:41:43,595 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-11-03 03:41:43,595 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-11-03 03:41:43,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:41:43,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:41:43,596 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-03 03:41:43,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-03 03:41:43,752 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:41:43,755 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:41:45,343 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:41:46,277 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:41:46,278 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:41:46,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:41:46 BoogieIcfgContainer [2022-11-03 03:41:46,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:41:46,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:41:46,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:41:46,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:41:46,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:41:42" (1/3) ... [2022-11-03 03:41:46,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6118a3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:41:46, skipping insertion in model container [2022-11-03 03:41:46,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:43" (2/3) ... [2022-11-03 03:41:46,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6118a3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:41:46, skipping insertion in model container [2022-11-03 03:41:46,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:41:46" (3/3) ... [2022-11-03 03:41:46,298 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product30.cil.c [2022-11-03 03:41:46,346 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:41:46,347 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:41:46,451 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:41:46,461 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;@450d6ef4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:41:46,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:41:46,472 INFO L276 IsEmpty]: Start isEmpty. Operand has 390 states, 261 states have (on average 1.5862068965517242) internal successors, (414), 284 states have internal predecessors, (414), 101 states have call successors, (101), 26 states have call predecessors, (101), 26 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) [2022-11-03 03:41:46,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 03:41:46,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:46,506 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:41:46,507 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:41:46,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:46,516 INFO L85 PathProgramCache]: Analyzing trace with hash -928472709, now seen corresponding path program 1 times [2022-11-03 03:41:46,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:46,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117440689] [2022-11-03 03:41:46,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:46,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:47,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 03:41:47,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:47,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117440689] [2022-11-03 03:41:47,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117440689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:47,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:47,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:41:47,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427073947] [2022-11-03 03:41:47,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:47,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:41:47,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:47,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:41:47,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:41:47,998 INFO L87 Difference]: Start difference. First operand has 390 states, 261 states have (on average 1.5862068965517242) internal successors, (414), 284 states have internal predecessors, (414), 101 states have call successors, (101), 26 states have call predecessors, (101), 26 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-03 03:41:51,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:51,129 INFO L93 Difference]: Finished difference Result 1260 states and 2036 transitions. [2022-11-03 03:41:51,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:41:51,132 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 54 [2022-11-03 03:41:51,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:51,169 INFO L225 Difference]: With dead ends: 1260 [2022-11-03 03:41:51,172 INFO L226 Difference]: Without dead ends: 887 [2022-11-03 03:41:51,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:41:51,190 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 1226 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 1903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:51,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 1350 Invalid, 1903 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [473 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-03 03:41:51,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-11-03 03:41:51,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 800. [2022-11-03 03:41:51,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 561 states have (on average 1.6007130124777185) internal successors, (898), 591 states have internal predecessors, (898), 193 states have call successors, (193), 44 states have call predecessors, (193), 45 states have return successors, (195), 177 states have call predecessors, (195), 188 states have call successors, (195) [2022-11-03 03:41:51,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1286 transitions. [2022-11-03 03:41:51,361 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1286 transitions. Word has length 54 [2022-11-03 03:41:51,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:51,362 INFO L495 AbstractCegarLoop]: Abstraction has 800 states and 1286 transitions. [2022-11-03 03:41:51,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-03 03:41:51,363 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1286 transitions. [2022-11-03 03:41:51,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-03 03:41:51,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:51,370 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:41:51,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:41:51,371 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:41:51,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:51,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1757354683, now seen corresponding path program 1 times [2022-11-03 03:41:51,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:51,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085350260] [2022-11-03 03:41:51,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:51,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:52,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 03:41:52,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:52,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085350260] [2022-11-03 03:41:52,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085350260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:52,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:52,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:41:52,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459739938] [2022-11-03 03:41:52,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:52,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:41:52,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:52,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:41:52,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:41:52,094 INFO L87 Difference]: Start difference. First operand 800 states and 1286 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 03:41:52,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:52,632 INFO L93 Difference]: Finished difference Result 1767 states and 2881 transitions. [2022-11-03 03:41:52,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:41:52,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 87 [2022-11-03 03:41:52,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:52,643 INFO L225 Difference]: With dead ends: 1767 [2022-11-03 03:41:52,644 INFO L226 Difference]: Without dead ends: 991 [2022-11-03 03:41:52,649 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 [2022-11-03 03:41:52,651 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 177 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2332 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:52,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2332 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:41:52,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-11-03 03:41:52,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 806. [2022-11-03 03:41:52,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 567 states have (on average 1.5943562610229276) internal successors, (904), 597 states have internal predecessors, (904), 193 states have call successors, (193), 44 states have call predecessors, (193), 45 states have return successors, (195), 177 states have call predecessors, (195), 188 states have call successors, (195) [2022-11-03 03:41:52,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1292 transitions. [2022-11-03 03:41:52,733 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1292 transitions. Word has length 87 [2022-11-03 03:41:52,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:52,734 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 1292 transitions. [2022-11-03 03:41:52,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 03:41:52,735 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1292 transitions. [2022-11-03 03:41:52,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-03 03:41:52,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:52,739 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:41:52,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:41:52,740 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:41:52,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:52,741 INFO L85 PathProgramCache]: Analyzing trace with hash -297931558, now seen corresponding path program 1 times [2022-11-03 03:41:52,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:52,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248654921] [2022-11-03 03:41:52,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:52,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:53,416 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:41:53,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:53,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248654921] [2022-11-03 03:41:53,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248654921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:53,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:53,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 03:41:53,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110483201] [2022-11-03 03:41:53,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:53,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:41:53,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:53,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:41:53,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:41:53,423 INFO L87 Difference]: Start difference. First operand 806 states and 1292 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-03 03:41:58,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:58,135 INFO L93 Difference]: Finished difference Result 2768 states and 4483 transitions. [2022-11-03 03:41:58,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 03:41:58,136 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 88 [2022-11-03 03:41:58,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:58,160 INFO L225 Difference]: With dead ends: 2768 [2022-11-03 03:41:58,160 INFO L226 Difference]: Without dead ends: 1985 [2022-11-03 03:41:58,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-03 03:41:58,181 INFO L413 NwaCegarLoop]: 945 mSDtfsCounter, 1346 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 4085 mSolverCounterSat, 709 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 2554 SdHoareTripleChecker+Invalid, 4794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 709 IncrementalHoareTripleChecker+Valid, 4085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:58,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 2554 Invalid, 4794 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [709 Valid, 4085 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-03 03:41:58,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2022-11-03 03:41:58,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1798. [2022-11-03 03:41:58,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1232 states have (on average 1.5665584415584415) internal successors, (1930), 1304 states have internal predecessors, (1930), 474 states have call successors, (474), 79 states have call predecessors, (474), 91 states have return successors, (493), 447 states have call predecessors, (493), 469 states have call successors, (493) [2022-11-03 03:41:58,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2897 transitions. [2022-11-03 03:41:58,391 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2897 transitions. Word has length 88 [2022-11-03 03:41:58,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:58,392 INFO L495 AbstractCegarLoop]: Abstraction has 1798 states and 2897 transitions. [2022-11-03 03:41:58,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-03 03:41:58,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2897 transitions. [2022-11-03 03:41:58,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-03 03:41:58,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:58,396 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:41:58,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:41:58,397 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:41:58,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:58,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1078003022, now seen corresponding path program 1 times [2022-11-03 03:41:58,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:58,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270729905] [2022-11-03 03:41:58,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:58,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:59,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:41:59,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:59,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270729905] [2022-11-03 03:41:59,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270729905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:59,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:59,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 03:41:59,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017377119] [2022-11-03 03:41:59,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:59,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 03:41:59,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:59,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 03:41:59,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:41:59,146 INFO L87 Difference]: Start difference. First operand 1798 states and 2897 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 6 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-03 03:42:03,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:03,645 INFO L93 Difference]: Finished difference Result 5045 states and 8154 transitions. [2022-11-03 03:42:03,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-03 03:42:03,647 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 6 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 89 [2022-11-03 03:42:03,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:03,673 INFO L225 Difference]: With dead ends: 5045 [2022-11-03 03:42:03,673 INFO L226 Difference]: Without dead ends: 3272 [2022-11-03 03:42:03,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2022-11-03 03:42:03,694 INFO L413 NwaCegarLoop]: 793 mSDtfsCounter, 1748 mSDsluCounter, 2333 mSDsCounter, 0 mSdLazyCounter, 3641 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1814 SdHoareTripleChecker+Valid, 2993 SdHoareTripleChecker+Invalid, 4249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 3641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:03,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1814 Valid, 2993 Invalid, 4249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 3641 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-03 03:42:03,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2022-11-03 03:42:03,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 3110. [2022-11-03 03:42:03,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3110 states, 2206 states have (on average 1.5897552130553037) internal successors, (3507), 2297 states have internal predecessors, (3507), 732 states have call successors, (732), 141 states have call predecessors, (732), 171 states have return successors, (795), 715 states have call predecessors, (795), 727 states have call successors, (795) [2022-11-03 03:42:04,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 5034 transitions. [2022-11-03 03:42:04,016 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 5034 transitions. Word has length 89 [2022-11-03 03:42:04,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:04,017 INFO L495 AbstractCegarLoop]: Abstraction has 3110 states and 5034 transitions. [2022-11-03 03:42:04,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 6 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-03 03:42:04,018 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 5034 transitions. [2022-11-03 03:42:04,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-03 03:42:04,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:04,023 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:42:04,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:42:04,023 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:42:04,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:04,024 INFO L85 PathProgramCache]: Analyzing trace with hash 161028296, now seen corresponding path program 1 times [2022-11-03 03:42:04,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:04,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731010304] [2022-11-03 03:42:04,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:04,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:04,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:42:04,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:04,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731010304] [2022-11-03 03:42:04,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731010304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:04,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:42:04,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:42:04,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147219047] [2022-11-03 03:42:04,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:04,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:42:04,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:42:04,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:42:04,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:42:04,597 INFO L87 Difference]: Start difference. First operand 3110 states and 5034 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:42:05,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:05,095 INFO L93 Difference]: Finished difference Result 5549 states and 9002 transitions. [2022-11-03 03:42:05,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:42:05,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 94 [2022-11-03 03:42:05,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:05,124 INFO L225 Difference]: With dead ends: 5549 [2022-11-03 03:42:05,124 INFO L226 Difference]: Without dead ends: 3222 [2022-11-03 03:42:05,179 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 [2022-11-03 03:42:05,180 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 7 mSDsluCounter, 2987 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3385 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:05,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3385 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:42:05,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2022-11-03 03:42:05,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 3180. [2022-11-03 03:42:05,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3180 states, 2256 states have (on average 1.5766843971631206) internal successors, (3557), 2347 states have internal predecessors, (3557), 732 states have call successors, (732), 141 states have call predecessors, (732), 191 states have return successors, (845), 735 states have call predecessors, (845), 727 states have call successors, (845) [2022-11-03 03:42:05,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3180 states to 3180 states and 5134 transitions. [2022-11-03 03:42:05,538 INFO L78 Accepts]: Start accepts. Automaton has 3180 states and 5134 transitions. Word has length 94 [2022-11-03 03:42:05,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:05,541 INFO L495 AbstractCegarLoop]: Abstraction has 3180 states and 5134 transitions. [2022-11-03 03:42:05,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:42:05,542 INFO L276 IsEmpty]: Start isEmpty. Operand 3180 states and 5134 transitions. [2022-11-03 03:42:05,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-03 03:42:05,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:05,553 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:42:05,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:42:05,554 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:42:05,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:05,554 INFO L85 PathProgramCache]: Analyzing trace with hash 279441064, now seen corresponding path program 1 times [2022-11-03 03:42:05,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:05,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236639571] [2022-11-03 03:42:05,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:05,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:06,039 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:42:06,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:06,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236639571] [2022-11-03 03:42:06,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236639571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:06,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:42:06,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:42:06,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759517111] [2022-11-03 03:42:06,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:06,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:42:06,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:42:06,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:42:06,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:42:06,042 INFO L87 Difference]: Start difference. First operand 3180 states and 5134 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:42:06,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:06,543 INFO L93 Difference]: Finished difference Result 5655 states and 9142 transitions. [2022-11-03 03:42:06,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:42:06,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 94 [2022-11-03 03:42:06,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:06,571 INFO L225 Difference]: With dead ends: 5655 [2022-11-03 03:42:06,571 INFO L226 Difference]: Without dead ends: 3272 [2022-11-03 03:42:06,587 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 [2022-11-03 03:42:06,588 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 6 mSDsluCounter, 3002 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:06,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3404 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:42:06,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2022-11-03 03:42:06,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 3190. [2022-11-03 03:42:06,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3190 states, 2266 states have (on average 1.5741394527802295) internal successors, (3567), 2347 states have internal predecessors, (3567), 732 states have call successors, (732), 141 states have call predecessors, (732), 191 states have return successors, (845), 745 states have call predecessors, (845), 727 states have call successors, (845) [2022-11-03 03:42:06,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3190 states to 3190 states and 5144 transitions. [2022-11-03 03:42:06,920 INFO L78 Accepts]: Start accepts. Automaton has 3190 states and 5144 transitions. Word has length 94 [2022-11-03 03:42:06,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:06,920 INFO L495 AbstractCegarLoop]: Abstraction has 3190 states and 5144 transitions. [2022-11-03 03:42:06,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:42:06,921 INFO L276 IsEmpty]: Start isEmpty. Operand 3190 states and 5144 transitions. [2022-11-03 03:42:06,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-03 03:42:06,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:06,925 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:42:06,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:42:06,925 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:42:06,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:06,926 INFO L85 PathProgramCache]: Analyzing trace with hash -338251077, now seen corresponding path program 1 times [2022-11-03 03:42:06,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:06,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242634996] [2022-11-03 03:42:06,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:06,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:07,432 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:42:07,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:07,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242634996] [2022-11-03 03:42:07,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242634996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:07,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:42:07,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:42:07,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274511312] [2022-11-03 03:42:07,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:07,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:42:07,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:42:07,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:42:07,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:42:07,437 INFO L87 Difference]: Start difference. First operand 3190 states and 5144 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:42:07,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:07,994 INFO L93 Difference]: Finished difference Result 5673 states and 9160 transitions. [2022-11-03 03:42:07,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:42:07,995 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 93 [2022-11-03 03:42:07,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:08,021 INFO L225 Difference]: With dead ends: 5673 [2022-11-03 03:42:08,022 INFO L226 Difference]: Without dead ends: 3282 [2022-11-03 03:42:08,035 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 [2022-11-03 03:42:08,036 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 7 mSDsluCounter, 2987 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3385 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:08,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3385 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:42:08,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3282 states. [2022-11-03 03:42:08,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3282 to 3200. [2022-11-03 03:42:08,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3200 states, 2276 states have (on average 1.5716168717047452) internal successors, (3577), 2347 states have internal predecessors, (3577), 732 states have call successors, (732), 141 states have call predecessors, (732), 191 states have return successors, (845), 755 states have call predecessors, (845), 727 states have call successors, (845) [2022-11-03 03:42:08,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5154 transitions. [2022-11-03 03:42:08,322 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5154 transitions. Word has length 93 [2022-11-03 03:42:08,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:08,323 INFO L495 AbstractCegarLoop]: Abstraction has 3200 states and 5154 transitions. [2022-11-03 03:42:08,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:42:08,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5154 transitions. [2022-11-03 03:42:08,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-03 03:42:08,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:08,328 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:42:08,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:42:08,328 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:42:08,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:08,329 INFO L85 PathProgramCache]: Analyzing trace with hash -68575904, now seen corresponding path program 1 times [2022-11-03 03:42:08,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:08,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603509115] [2022-11-03 03:42:08,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:08,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:09,013 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:42:09,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:09,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603509115] [2022-11-03 03:42:09,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603509115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:09,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:42:09,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 03:42:09,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679168311] [2022-11-03 03:42:09,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:09,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:42:09,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:42:09,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:42:09,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:42:09,017 INFO L87 Difference]: Start difference. First operand 3200 states and 5154 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 7 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 8 states have call predecessors, (17), 6 states have call successors, (17) [2022-11-03 03:42:12,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:12,364 INFO L93 Difference]: Finished difference Result 7984 states and 12948 transitions. [2022-11-03 03:42:12,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:42:12,365 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 7 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 8 states have call predecessors, (17), 6 states have call successors, (17) Word has length 98 [2022-11-03 03:42:12,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:12,411 INFO L225 Difference]: With dead ends: 7984 [2022-11-03 03:42:12,411 INFO L226 Difference]: Without dead ends: 5343 [2022-11-03 03:42:12,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:42:12,434 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 1718 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 2039 mSolverCounterSat, 748 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1883 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 748 IncrementalHoareTripleChecker+Valid, 2039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:12,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1883 Valid, 1726 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [748 Valid, 2039 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-03 03:42:12,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5343 states. [2022-11-03 03:42:12,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5343 to 5204. [2022-11-03 03:42:12,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5204 states, 3627 states have (on average 1.533498759305211) internal successors, (5562), 3768 states have internal predecessors, (5562), 1246 states have call successors, (1246), 250 states have call predecessors, (1246), 330 states have return successors, (1466), 1262 states have call predecessors, (1466), 1241 states have call successors, (1466) [2022-11-03 03:42:13,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5204 states to 5204 states and 8274 transitions. [2022-11-03 03:42:13,003 INFO L78 Accepts]: Start accepts. Automaton has 5204 states and 8274 transitions. Word has length 98 [2022-11-03 03:42:13,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:13,004 INFO L495 AbstractCegarLoop]: Abstraction has 5204 states and 8274 transitions. [2022-11-03 03:42:13,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 7 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 8 states have call predecessors, (17), 6 states have call successors, (17) [2022-11-03 03:42:13,005 INFO L276 IsEmpty]: Start isEmpty. Operand 5204 states and 8274 transitions. [2022-11-03 03:42:13,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-03 03:42:13,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:13,009 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:42:13,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:42:13,009 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:42:13,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:13,010 INFO L85 PathProgramCache]: Analyzing trace with hash -2134922000, now seen corresponding path program 1 times [2022-11-03 03:42:13,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:13,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453076667] [2022-11-03 03:42:13,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:13,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:13,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:42:13,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:13,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453076667] [2022-11-03 03:42:13,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453076667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:13,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:42:13,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:42:13,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269991224] [2022-11-03 03:42:13,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:13,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:42:13,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:42:13,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:42:13,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:42:13,514 INFO L87 Difference]: Start difference. First operand 5204 states and 8274 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-03 03:42:18,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:18,138 INFO L93 Difference]: Finished difference Result 17057 states and 27861 transitions. [2022-11-03 03:42:18,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:42:18,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) Word has length 101 [2022-11-03 03:42:18,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:18,227 INFO L225 Difference]: With dead ends: 17057 [2022-11-03 03:42:18,227 INFO L226 Difference]: Without dead ends: 11878 [2022-11-03 03:42:18,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:42:18,264 INFO L413 NwaCegarLoop]: 1052 mSDtfsCounter, 2203 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 2511 mSolverCounterSat, 986 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2316 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 3497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 986 IncrementalHoareTripleChecker+Valid, 2511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:18,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2316 Valid, 2243 Invalid, 3497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [986 Valid, 2511 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-03 03:42:18,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11878 states. [2022-11-03 03:42:19,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11878 to 10987. [2022-11-03 03:42:19,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10987 states, 7507 states have (on average 1.5255095244438523) internal successors, (11452), 7910 states have internal predecessors, (11452), 2806 states have call successors, (2806), 508 states have call predecessors, (2806), 673 states have return successors, (3468), 2799 states have call predecessors, (3468), 2801 states have call successors, (3468) [2022-11-03 03:42:19,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10987 states to 10987 states and 17726 transitions. [2022-11-03 03:42:19,542 INFO L78 Accepts]: Start accepts. Automaton has 10987 states and 17726 transitions. Word has length 101 [2022-11-03 03:42:19,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:19,544 INFO L495 AbstractCegarLoop]: Abstraction has 10987 states and 17726 transitions. [2022-11-03 03:42:19,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-03 03:42:19,545 INFO L276 IsEmpty]: Start isEmpty. Operand 10987 states and 17726 transitions. [2022-11-03 03:42:19,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-03 03:42:19,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:19,549 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:42:19,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:42:19,550 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:42:19,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:19,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1945682801, now seen corresponding path program 1 times [2022-11-03 03:42:19,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:19,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478953464] [2022-11-03 03:42:19,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:19,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:20,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:42:20,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:20,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478953464] [2022-11-03 03:42:20,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478953464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:20,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:42:20,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:42:20,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945369559] [2022-11-03 03:42:20,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:20,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:42:20,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:42:20,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:42:20,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:42:20,195 INFO L87 Difference]: Start difference. First operand 10987 states and 17726 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-03 03:42:23,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:23,682 INFO L93 Difference]: Finished difference Result 21680 states and 35142 transitions. [2022-11-03 03:42:23,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:42:23,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 102 [2022-11-03 03:42:23,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:23,777 INFO L225 Difference]: With dead ends: 21680 [2022-11-03 03:42:23,778 INFO L226 Difference]: Without dead ends: 12199 [2022-11-03 03:42:23,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:42:23,832 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 993 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 2306 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 2735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 2306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:23,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 1915 Invalid, 2735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 2306 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 03:42:23,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12199 states. [2022-11-03 03:42:24,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12199 to 11221. [2022-11-03 03:42:24,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11221 states, 7669 states have (on average 1.5217107836745338) internal successors, (11670), 8100 states have internal predecessors, (11670), 2820 states have call successors, (2820), 540 states have call predecessors, (2820), 731 states have return successors, (3556), 2811 states have call predecessors, (3556), 2815 states have call successors, (3556) [2022-11-03 03:42:25,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11221 states to 11221 states and 18046 transitions. [2022-11-03 03:42:25,076 INFO L78 Accepts]: Start accepts. Automaton has 11221 states and 18046 transitions. Word has length 102 [2022-11-03 03:42:25,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:25,076 INFO L495 AbstractCegarLoop]: Abstraction has 11221 states and 18046 transitions. [2022-11-03 03:42:25,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-03 03:42:25,077 INFO L276 IsEmpty]: Start isEmpty. Operand 11221 states and 18046 transitions. [2022-11-03 03:42:25,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-03 03:42:25,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:25,082 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:42:25,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:42:25,083 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:42:25,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:25,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1080847228, now seen corresponding path program 1 times [2022-11-03 03:42:25,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:25,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489591231] [2022-11-03 03:42:25,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:25,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:42:25,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:25,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489591231] [2022-11-03 03:42:25,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489591231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:25,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:42:25,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:42:25,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124336496] [2022-11-03 03:42:25,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:25,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:42:25,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:42:25,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:42:25,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:42:25,539 INFO L87 Difference]: Start difference. First operand 11221 states and 18046 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 03:42:26,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:26,982 INFO L93 Difference]: Finished difference Result 11347 states and 18255 transitions. [2022-11-03 03:42:26,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:42:26,982 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 106 [2022-11-03 03:42:26,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:27,210 INFO L225 Difference]: With dead ends: 11347 [2022-11-03 03:42:27,211 INFO L226 Difference]: Without dead ends: 11332 [2022-11-03 03:42:27,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:42:27,217 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 697 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:27,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 1504 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 03:42:27,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11332 states. [2022-11-03 03:42:28,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11332 to 11229. [2022-11-03 03:42:28,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11229 states, 7677 states have (on average 1.521167122573922) internal successors, (11678), 8108 states have internal predecessors, (11678), 2820 states have call successors, (2820), 540 states have call predecessors, (2820), 731 states have return successors, (3556), 2811 states have call predecessors, (3556), 2815 states have call successors, (3556) [2022-11-03 03:42:28,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11229 states to 11229 states and 18054 transitions. [2022-11-03 03:42:28,455 INFO L78 Accepts]: Start accepts. Automaton has 11229 states and 18054 transitions. Word has length 106 [2022-11-03 03:42:28,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:28,456 INFO L495 AbstractCegarLoop]: Abstraction has 11229 states and 18054 transitions. [2022-11-03 03:42:28,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 03:42:28,456 INFO L276 IsEmpty]: Start isEmpty. Operand 11229 states and 18054 transitions. [2022-11-03 03:42:28,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-03 03:42:28,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:28,464 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:42:28,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:42:28,465 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:42:28,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:28,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1244308750, now seen corresponding path program 1 times [2022-11-03 03:42:28,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:28,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320647031] [2022-11-03 03:42:28,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:28,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:29,413 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:42:29,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:29,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320647031] [2022-11-03 03:42:29,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320647031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:29,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:42:29,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 03:42:29,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641313686] [2022-11-03 03:42:29,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:29,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 03:42:29,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:42:29,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 03:42:29,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:42:29,417 INFO L87 Difference]: Start difference. First operand 11229 states and 18054 transitions. Second operand has 13 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-03 03:42:36,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:36,985 INFO L93 Difference]: Finished difference Result 12417 states and 19864 transitions. [2022-11-03 03:42:36,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-03 03:42:36,991 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) Word has length 112 [2022-11-03 03:42:36,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:37,097 INFO L225 Difference]: With dead ends: 12417 [2022-11-03 03:42:37,097 INFO L226 Difference]: Without dead ends: 12400 [2022-11-03 03:42:37,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=375, Invalid=2277, Unknown=0, NotChecked=0, Total=2652 [2022-11-03 03:42:37,111 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 2718 mSDsluCounter, 3603 mSDsCounter, 0 mSdLazyCounter, 7628 mSolverCounterSat, 1584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2744 SdHoareTripleChecker+Valid, 4264 SdHoareTripleChecker+Invalid, 9212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1584 IncrementalHoareTripleChecker+Valid, 7628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:37,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2744 Valid, 4264 Invalid, 9212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1584 Valid, 7628 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-03 03:42:37,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12400 states. [2022-11-03 03:42:38,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12400 to 11869. [2022-11-03 03:42:38,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11869 states, 8172 states have (on average 1.5277777777777777) internal successors, (12485), 8599 states have internal predecessors, (12485), 2861 states have call successors, (2861), 645 states have call predecessors, (2861), 835 states have return successors, (3608), 2855 states have call predecessors, (3608), 2856 states have call successors, (3608) [2022-11-03 03:42:38,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11869 states to 11869 states and 18954 transitions. [2022-11-03 03:42:38,466 INFO L78 Accepts]: Start accepts. Automaton has 11869 states and 18954 transitions. Word has length 112 [2022-11-03 03:42:38,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:38,467 INFO L495 AbstractCegarLoop]: Abstraction has 11869 states and 18954 transitions. [2022-11-03 03:42:38,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-03 03:42:38,468 INFO L276 IsEmpty]: Start isEmpty. Operand 11869 states and 18954 transitions. [2022-11-03 03:42:38,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-03 03:42:38,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:38,473 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:42:38,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 03:42:38,473 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:42:38,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:38,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1105542410, now seen corresponding path program 1 times [2022-11-03 03:42:38,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:38,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142053534] [2022-11-03 03:42:38,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:38,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:39,395 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:42:39,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:39,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142053534] [2022-11-03 03:42:39,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142053534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:39,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:42:39,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 03:42:39,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544749509] [2022-11-03 03:42:39,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:39,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 03:42:39,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:42:39,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 03:42:39,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:42:39,399 INFO L87 Difference]: Start difference. First operand 11869 states and 18954 transitions. Second operand has 9 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 7 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2022-11-03 03:42:45,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:45,998 INFO L93 Difference]: Finished difference Result 33640 states and 54403 transitions. [2022-11-03 03:42:45,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:42:45,999 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 7 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 119 [2022-11-03 03:42:45,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:46,163 INFO L225 Difference]: With dead ends: 33640 [2022-11-03 03:42:46,163 INFO L226 Difference]: Without dead ends: 21798 [2022-11-03 03:42:46,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:42:46,238 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 3832 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 2687 mSolverCounterSat, 1582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3902 SdHoareTripleChecker+Valid, 2247 SdHoareTripleChecker+Invalid, 4269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1582 IncrementalHoareTripleChecker+Valid, 2687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:46,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3902 Valid, 2247 Invalid, 4269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1582 Valid, 2687 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-03 03:42:46,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21798 states. [2022-11-03 03:42:48,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21798 to 19127. [2022-11-03 03:42:48,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19127 states, 12999 states have (on average 1.5361950919301486) internal successors, (19969), 13831 states have internal predecessors, (19969), 4804 states have call successors, (4804), 1006 states have call predecessors, (4804), 1323 states have return successors, (6076), 4632 states have call predecessors, (6076), 4799 states have call successors, (6076) [2022-11-03 03:42:48,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19127 states to 19127 states and 30849 transitions. [2022-11-03 03:42:48,945 INFO L78 Accepts]: Start accepts. Automaton has 19127 states and 30849 transitions. Word has length 119 [2022-11-03 03:42:48,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:48,946 INFO L495 AbstractCegarLoop]: Abstraction has 19127 states and 30849 transitions. [2022-11-03 03:42:48,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 7 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2022-11-03 03:42:48,947 INFO L276 IsEmpty]: Start isEmpty. Operand 19127 states and 30849 transitions. [2022-11-03 03:42:48,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-03 03:42:48,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:48,953 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:42:48,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 03:42:48,953 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:42:48,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:48,954 INFO L85 PathProgramCache]: Analyzing trace with hash 670698030, now seen corresponding path program 1 times [2022-11-03 03:42:48,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:48,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120916850] [2022-11-03 03:42:48,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:48,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:52,474 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:42:52,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:52,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120916850] [2022-11-03 03:42:52,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120916850] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:42:52,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981442905] [2022-11-03 03:42:52,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:52,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:42:52,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd1b1c9-2790-4af1-a607-ab4b4fdc1171/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:42:52,478 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd1b1c9-2790-4af1-a607-ab4b4fdc1171/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:42:52,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd1b1c9-2790-4af1-a607-ab4b4fdc1171/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:42:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:53,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 2114 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 03:42:53,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:42:56,615 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 03:42:56,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:43:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:43:00,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981442905] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:43:00,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1186494609] [2022-11-03 03:43:00,876 INFO L159 IcfgInterpreter]: Started Sifa with 112 locations of interest [2022-11-03 03:43:00,877 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:43:00,881 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:43:00,888 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:43:00,889 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:43:10,867 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 592 for LOIs [2022-11-03 03:44:39,857 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 592 for LOIs [2022-11-03 03:45:26,347 INFO L197 IcfgInterpreter]: Interpreting procedure areDoorsOpen with input of size 443 for LOIs [2022-11-03 03:45:26,425 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__twothirdsfull with input of size 577 for LOIs [2022-11-03 03:45:33,002 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 107 for LOIs [2022-11-03 03:45:33,087 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 76 for LOIs [2022-11-03 03:45:33,103 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 68 for LOIs [2022-11-03 03:45:33,118 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 468 for LOIs [2022-11-03 03:45:33,412 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 597 for LOIs [2022-11-03 03:45:38,315 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 476 for LOIs [2022-11-03 03:45:38,635 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 106 for LOIs [2022-11-03 03:45:39,105 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 101 for LOIs [2022-11-03 03:45:39,120 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 560 for LOIs [2022-11-03 03:45:42,771 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 837 for LOIs [2022-11-03 03:49:41,488 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 664 for LOIs [2022-11-03 03:49:42,021 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:50:02,636 WARN L234 SmtUtils]: Spent 11.60s on a formula simplification. DAG size of input: 664 DAG size of output: 525 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:50:16,080 WARN L234 SmtUtils]: Spent 12.26s on a formula simplification. DAG size of input: 704 DAG size of output: 539 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:50:24,157 WARN L234 SmtUtils]: Spent 7.59s on a formula simplification. DAG size of input: 679 DAG size of output: 617 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:50:32,237 WARN L234 SmtUtils]: Spent 7.58s on a formula simplification. DAG size of input: 679 DAG size of output: 617 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:50:56,602 WARN L234 SmtUtils]: Spent 22.19s on a formula simplification. DAG size of input: 837 DAG size of output: 688 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:51:30,259 WARN L234 SmtUtils]: Spent 29.08s on a formula simplification. DAG size of input: 1178 DAG size of output: 686 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:52:07,996 WARN L234 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 634 DAG size of output: 604 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:52:14,362 WARN L234 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 634 DAG size of output: 605 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:53:00,352 WARN L234 SmtUtils]: Spent 11.49s on a formula simplification. DAG size of input: 561 DAG size of output: 500 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:53:11,892 WARN L234 SmtUtils]: Spent 8.47s on a formula simplification. DAG size of input: 468 DAG size of output: 448 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:53:21,821 WARN L234 SmtUtils]: Spent 8.56s on a formula simplification. DAG size of input: 472 DAG size of output: 452 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:53:37,435 WARN L234 SmtUtils]: Spent 13.81s on a formula simplification. DAG size of input: 563 DAG size of output: 511 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:53:52,060 WARN L234 SmtUtils]: Spent 12.73s on a formula simplification. DAG size of input: 568 DAG size of output: 512 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:54:06,676 WARN L234 SmtUtils]: Spent 12.74s on a formula simplification. DAG size of input: 570 DAG size of output: 514 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:54:21,320 WARN L234 SmtUtils]: Spent 12.73s on a formula simplification. DAG size of input: 572 DAG size of output: 516 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:54:36,230 WARN L234 SmtUtils]: Spent 12.86s on a formula simplification. DAG size of input: 574 DAG size of output: 518 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:54:44,480 WARN L234 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 576 DAG size of output: 513 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:54:52,782 WARN L234 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 578 DAG size of output: 515 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)