./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f0289d2bc768d77152556c65688d1c231999d9919b651d65a3b9e8da8ee9b3f9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:54:13,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:54:13,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:54:13,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:54:13,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:54:13,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:54:13,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:54:13,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:54:13,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:54:13,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:54:13,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:54:13,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:54:13,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:54:13,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:54:13,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:54:13,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:54:13,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:54:13,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:54:13,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:54:13,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:54:13,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:54:13,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:54:13,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:54:13,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:54:13,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:54:13,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:54:13,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:54:13,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:54:13,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:54:13,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:54:13,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:54:13,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:54:13,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:54:13,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:54:13,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:54:13,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:54:13,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:54:13,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:54:13,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:54:13,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:54:13,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:54:13,491 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 10:54:13,511 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:54:13,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:54:13,511 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:54:13,511 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:54:13,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:54:13,512 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:54:13,512 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:54:13,512 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:54:13,513 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:54:13,513 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:54:13,513 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:54:13,513 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:54:13,513 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:54:13,513 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:54:13,513 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:54:13,514 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:54:13,514 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:54:13,514 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:54:13,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:54:13,515 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:54:13,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:54:13,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:54:13,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:54:13,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:54:13,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:54:13,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:54:13,516 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:54:13,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:54:13,516 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:54:13,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:54:13,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:54:13,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:54:13,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:54:13,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:54:13,517 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:54:13,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:54:13,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:54:13,518 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:54:13,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:54:13,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:54:13,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:54:13,518 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_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0289d2bc768d77152556c65688d1c231999d9919b651d65a3b9e8da8ee9b3f9 [2022-12-14 10:54:13,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:54:13,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:54:13,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:54:13,723 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:54:13,724 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:54:13,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c [2022-12-14 10:54:16,353 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:54:16,592 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:54:16,592 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c [2022-12-14 10:54:16,608 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/data/39384ee16/5454a6fbaa964632830d68d9f7303375/FLAG45562d6e9 [2022-12-14 10:54:16,622 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/data/39384ee16/5454a6fbaa964632830d68d9f7303375 [2022-12-14 10:54:16,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:54:16,625 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:54:16,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:54:16,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:54:16,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:54:16,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:54:16" (1/1) ... [2022-12-14 10:54:16,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@742f56dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:16, skipping insertion in model container [2022-12-14 10:54:16,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:54:16" (1/1) ... [2022-12-14 10:54:16,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:54:16,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:54:16,980 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c[27271,27284] [2022-12-14 10:54:17,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:54:17,148 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:54:17,189 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c[27271,27284] [2022-12-14 10:54:17,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:54:17,244 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:54:17,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:17 WrapperNode [2022-12-14 10:54:17,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:54:17,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:54:17,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:54:17,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:54:17,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:17" (1/1) ... [2022-12-14 10:54:17,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:17" (1/1) ... [2022-12-14 10:54:17,297 INFO L138 Inliner]: procedures = 94, calls = 346, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 865 [2022-12-14 10:54:17,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:54:17,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:54:17,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:54:17,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:54:17,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:17" (1/1) ... [2022-12-14 10:54:17,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:17" (1/1) ... [2022-12-14 10:54:17,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:17" (1/1) ... [2022-12-14 10:54:17,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:17" (1/1) ... [2022-12-14 10:54:17,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:17" (1/1) ... [2022-12-14 10:54:17,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:17" (1/1) ... [2022-12-14 10:54:17,332 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:17" (1/1) ... [2022-12-14 10:54:17,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:17" (1/1) ... [2022-12-14 10:54:17,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:54:17,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:54:17,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:54:17,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:54:17,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:17" (1/1) ... [2022-12-14 10:54:17,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:54:17,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:54:17,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:54:17,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:54:17,406 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-12-14 10:54:17,407 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-12-14 10:54:17,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:54:17,407 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-12-14 10:54:17,407 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-12-14 10:54:17,407 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-12-14 10:54:17,407 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-12-14 10:54:17,408 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-12-14 10:54:17,408 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-12-14 10:54:17,408 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-12-14 10:54:17,408 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-12-14 10:54:17,408 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-12-14 10:54:17,408 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-12-14 10:54:17,409 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-14 10:54:17,409 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-14 10:54:17,409 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-14 10:54:17,409 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-14 10:54:17,409 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-12-14 10:54:17,409 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-12-14 10:54:17,409 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-14 10:54:17,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-14 10:54:17,410 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-12-14 10:54:17,410 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-12-14 10:54:17,410 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-12-14 10:54:17,410 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-12-14 10:54:17,410 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-12-14 10:54:17,411 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-12-14 10:54:17,411 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-12-14 10:54:17,411 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-12-14 10:54:17,411 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-12-14 10:54:17,411 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-12-14 10:54:17,411 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-12-14 10:54:17,411 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-12-14 10:54:17,412 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-12-14 10:54:17,412 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-12-14 10:54:17,412 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-12-14 10:54:17,412 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-12-14 10:54:17,412 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-12-14 10:54:17,412 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-12-14 10:54:17,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:54:17,413 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-12-14 10:54:17,413 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-12-14 10:54:17,413 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-12-14 10:54:17,413 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-12-14 10:54:17,413 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-12-14 10:54:17,413 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-12-14 10:54:17,413 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-12-14 10:54:17,414 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-12-14 10:54:17,414 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-12-14 10:54:17,414 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-12-14 10:54:17,414 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-12-14 10:54:17,414 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-12-14 10:54:17,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:54:17,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:54:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-12-14 10:54:17,415 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-12-14 10:54:17,528 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:54:17,530 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:54:18,267 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:54:18,733 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:54:18,733 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 10:54:18,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:54:18 BoogieIcfgContainer [2022-12-14 10:54:18,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:54:18,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:54:18,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:54:18,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:54:18,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:54:16" (1/3) ... [2022-12-14 10:54:18,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a475de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:54:18, skipping insertion in model container [2022-12-14 10:54:18,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:17" (2/3) ... [2022-12-14 10:54:18,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a475de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:54:18, skipping insertion in model container [2022-12-14 10:54:18,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:54:18" (3/3) ... [2022-12-14 10:54:18,742 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product22.cil.c [2022-12-14 10:54:18,757 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:54:18,757 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 10:54:18,804 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:54:18,809 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;@79993b1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:54:18,809 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 10:54:18,814 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) [2022-12-14 10:54:18,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 10:54:18,825 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:18,826 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] [2022-12-14 10:54:18,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:54:18,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:18,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1044279087, now seen corresponding path program 1 times [2022-12-14 10:54:18,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:18,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125294825] [2022-12-14 10:54:18,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:18,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:19,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 10:54:19,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:19,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125294825] [2022-12-14 10:54:19,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125294825] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:54:19,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:54:19,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 10:54:19,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882276292] [2022-12-14 10:54:19,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:54:19,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:54:19,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:54:19,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:54:19,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:54:19,427 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) [2022-12-14 10:54:21,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:21,186 INFO L93 Difference]: Finished difference Result 1260 states and 2036 transitions. [2022-12-14 10:54:21,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:54:21,188 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 [2022-12-14 10:54:21,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:21,207 INFO L225 Difference]: With dead ends: 1260 [2022-12-14 10:54:21,208 INFO L226 Difference]: Without dead ends: 887 [2022-12-14 10:54:21,213 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 [2022-12-14 10:54:21,215 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 1241 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 2122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:21,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 1119 Invalid, 2122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 10:54:21,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-12-14 10:54:21,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 800. [2022-12-14 10:54:21,320 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) [2022-12-14 10:54:21,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1286 transitions. [2022-12-14 10:54:21,329 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1286 transitions. Word has length 54 [2022-12-14 10:54:21,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:54:21,330 INFO L495 AbstractCegarLoop]: Abstraction has 800 states and 1286 transitions. [2022-12-14 10:54:21,330 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) [2022-12-14 10:54:21,330 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1286 transitions. [2022-12-14 10:54:21,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-14 10:54:21,337 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:21,338 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] [2022-12-14 10:54:21,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:54:21,338 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:54:21,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:21,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1859873666, now seen corresponding path program 1 times [2022-12-14 10:54:21,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:21,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61286965] [2022-12-14 10:54:21,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:21,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:21,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 10:54:21,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:21,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61286965] [2022-12-14 10:54:21,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61286965] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:54:21,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:54:21,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 10:54:21,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345821935] [2022-12-14 10:54:21,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:54:21,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:54:21,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:54:21,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:54:21,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:54:21,734 INFO L87 Difference]: Start difference. First operand 800 states and 1286 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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) [2022-12-14 10:54:22,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:22,048 INFO L93 Difference]: Finished difference Result 1767 states and 2881 transitions. [2022-12-14 10:54:22,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:54:22,049 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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 [2022-12-14 10:54:22,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:22,058 INFO L225 Difference]: With dead ends: 1767 [2022-12-14 10:54:22,058 INFO L226 Difference]: Without dead ends: 991 [2022-12-14 10:54:22,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:54:22,064 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 188 mSDsluCounter, 2319 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 2940 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:22,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 2940 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:54:22,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-12-14 10:54:22,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 806. [2022-12-14 10:54:22,123 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) [2022-12-14 10:54:22,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1292 transitions. [2022-12-14 10:54:22,130 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1292 transitions. Word has length 87 [2022-12-14 10:54:22,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:54:22,130 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 1292 transitions. [2022-12-14 10:54:22,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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) [2022-12-14 10:54:22,130 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1292 transitions. [2022-12-14 10:54:22,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-14 10:54:22,135 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:22,135 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] [2022-12-14 10:54:22,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:54:22,135 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:54:22,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:22,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1664376129, now seen corresponding path program 1 times [2022-12-14 10:54:22,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:22,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479626918] [2022-12-14 10:54:22,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:22,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:22,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 10:54:22,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:22,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479626918] [2022-12-14 10:54:22,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479626918] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:54:22,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:54:22,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 10:54:22,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694375607] [2022-12-14 10:54:22,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:54:22,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 10:54:22,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:54:22,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 10:54:22,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:54:22,535 INFO L87 Difference]: Start difference. First operand 806 states and 1292 transitions. Second operand has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 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) [2022-12-14 10:54:24,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:24,753 INFO L93 Difference]: Finished difference Result 2368 states and 3817 transitions. [2022-12-14 10:54:24,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 10:54:24,754 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 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 [2022-12-14 10:54:24,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:24,765 INFO L225 Difference]: With dead ends: 2368 [2022-12-14 10:54:24,765 INFO L226 Difference]: Without dead ends: 1585 [2022-12-14 10:54:24,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-12-14 10:54:24,772 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 1004 mSDsluCounter, 2235 mSDsCounter, 0 mSdLazyCounter, 4997 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 5385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 4997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:24,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 2829 Invalid, 5385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 4997 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-14 10:54:24,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2022-12-14 10:54:24,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1567. [2022-12-14 10:54:24,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1098 states have (on average 1.5819672131147542) internal successors, (1737), 1149 states have internal predecessors, (1737), 383 states have call successors, (383), 74 states have call predecessors, (383), 85 states have return successors, (402), 365 states have call predecessors, (402), 378 states have call successors, (402) [2022-12-14 10:54:24,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2522 transitions. [2022-12-14 10:54:24,900 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2522 transitions. Word has length 88 [2022-12-14 10:54:24,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:54:24,901 INFO L495 AbstractCegarLoop]: Abstraction has 1567 states and 2522 transitions. [2022-12-14 10:54:24,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 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) [2022-12-14 10:54:24,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2522 transitions. [2022-12-14 10:54:24,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-14 10:54:24,904 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:24,904 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] [2022-12-14 10:54:24,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 10:54:24,904 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:54:24,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:24,905 INFO L85 PathProgramCache]: Analyzing trace with hash -996288723, now seen corresponding path program 1 times [2022-12-14 10:54:24,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:24,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060241613] [2022-12-14 10:54:24,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:24,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:25,249 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 10:54:25,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:25,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060241613] [2022-12-14 10:54:25,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060241613] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:54:25,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:54:25,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 10:54:25,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82022643] [2022-12-14 10:54:25,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:54:25,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 10:54:25,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:54:25,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 10:54:25,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:54:25,252 INFO L87 Difference]: Start difference. First operand 1567 states and 2522 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) [2022-12-14 10:54:27,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:27,569 INFO L93 Difference]: Finished difference Result 4556 states and 7356 transitions. [2022-12-14 10:54:27,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-14 10:54:27,569 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 [2022-12-14 10:54:27,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:27,580 INFO L225 Difference]: With dead ends: 4556 [2022-12-14 10:54:27,580 INFO L226 Difference]: Without dead ends: 3014 [2022-12-14 10:54:27,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2022-12-14 10:54:27,585 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 1752 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 4031 mSolverCounterSat, 604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1817 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 4635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 4031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:27,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1817 Valid, 2610 Invalid, 4635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 4031 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-14 10:54:27,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3014 states. [2022-12-14 10:54:27,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3014 to 2879. [2022-12-14 10:54:27,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2879 states, 2072 states have (on average 1.5994208494208495) internal successors, (3314), 2142 states have internal predecessors, (3314), 641 states have call successors, (641), 136 states have call predecessors, (641), 165 states have return successors, (702), 633 states have call predecessors, (702), 636 states have call successors, (702) [2022-12-14 10:54:27,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 4657 transitions. [2022-12-14 10:54:27,710 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 4657 transitions. Word has length 89 [2022-12-14 10:54:27,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:54:27,711 INFO L495 AbstractCegarLoop]: Abstraction has 2879 states and 4657 transitions. [2022-12-14 10:54:27,711 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) [2022-12-14 10:54:27,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 4657 transitions. [2022-12-14 10:54:27,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 10:54:27,713 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:27,713 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] [2022-12-14 10:54:27,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 10:54:27,713 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:54:27,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:27,714 INFO L85 PathProgramCache]: Analyzing trace with hash 2071731385, now seen corresponding path program 1 times [2022-12-14 10:54:27,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:27,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332174787] [2022-12-14 10:54:27,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:27,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:27,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 10:54:27,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:27,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332174787] [2022-12-14 10:54:27,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332174787] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:54:27,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:54:27,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 10:54:27,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663740952] [2022-12-14 10:54:27,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:54:27,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:54:27,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:54:27,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:54:27,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:54:27,970 INFO L87 Difference]: Start difference. First operand 2879 states and 4657 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) [2022-12-14 10:54:28,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:28,224 INFO L93 Difference]: Finished difference Result 5087 states and 8240 transitions. [2022-12-14 10:54:28,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:54:28,225 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 [2022-12-14 10:54:28,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:28,236 INFO L225 Difference]: With dead ends: 5087 [2022-12-14 10:54:28,236 INFO L226 Difference]: Without dead ends: 2991 [2022-12-14 10:54:28,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:54:28,243 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 6 mSDsluCounter, 2829 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:28,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3404 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:54:28,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2022-12-14 10:54:28,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 2949. [2022-12-14 10:54:28,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 2122 states have (on average 1.585296889726673) internal successors, (3364), 2192 states have internal predecessors, (3364), 641 states have call successors, (641), 136 states have call predecessors, (641), 185 states have return successors, (752), 653 states have call predecessors, (752), 636 states have call successors, (752) [2022-12-14 10:54:28,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 4757 transitions. [2022-12-14 10:54:28,388 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 4757 transitions. Word has length 93 [2022-12-14 10:54:28,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:54:28,388 INFO L495 AbstractCegarLoop]: Abstraction has 2949 states and 4757 transitions. [2022-12-14 10:54:28,389 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) [2022-12-14 10:54:28,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 4757 transitions. [2022-12-14 10:54:28,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-14 10:54:28,391 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:28,391 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] [2022-12-14 10:54:28,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 10:54:28,391 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:54:28,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:28,392 INFO L85 PathProgramCache]: Analyzing trace with hash -709118888, now seen corresponding path program 1 times [2022-12-14 10:54:28,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:28,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823591114] [2022-12-14 10:54:28,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:28,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:28,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 10:54:28,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:28,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823591114] [2022-12-14 10:54:28,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823591114] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:54:28,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:54:28,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 10:54:28,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750817645] [2022-12-14 10:54:28,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:54:28,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:54:28,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:54:28,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:54:28,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:54:28,586 INFO L87 Difference]: Start difference. First operand 2949 states and 4757 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) [2022-12-14 10:54:28,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:28,849 INFO L93 Difference]: Finished difference Result 5193 states and 8380 transitions. [2022-12-14 10:54:28,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:54:28,850 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 [2022-12-14 10:54:28,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:28,866 INFO L225 Difference]: With dead ends: 5193 [2022-12-14 10:54:28,866 INFO L226 Difference]: Without dead ends: 3041 [2022-12-14 10:54:28,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:54:28,876 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 6 mSDsluCounter, 2825 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3399 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:28,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3399 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:54:28,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2022-12-14 10:54:29,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 2959. [2022-12-14 10:54:29,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2959 states, 2132 states have (on average 1.5825515947467168) internal successors, (3374), 2192 states have internal predecessors, (3374), 641 states have call successors, (641), 136 states have call predecessors, (641), 185 states have return successors, (752), 663 states have call predecessors, (752), 636 states have call successors, (752) [2022-12-14 10:54:29,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2959 states to 2959 states and 4767 transitions. [2022-12-14 10:54:29,013 INFO L78 Accepts]: Start accepts. Automaton has 2959 states and 4767 transitions. Word has length 94 [2022-12-14 10:54:29,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:54:29,013 INFO L495 AbstractCegarLoop]: Abstraction has 2959 states and 4767 transitions. [2022-12-14 10:54:29,013 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) [2022-12-14 10:54:29,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2959 states and 4767 transitions. [2022-12-14 10:54:29,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-14 10:54:29,015 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:29,015 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] [2022-12-14 10:54:29,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 10:54:29,015 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:54:29,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:29,016 INFO L85 PathProgramCache]: Analyzing trace with hash -827531656, now seen corresponding path program 1 times [2022-12-14 10:54:29,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:29,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88704199] [2022-12-14 10:54:29,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:29,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:29,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 10:54:29,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:29,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88704199] [2022-12-14 10:54:29,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88704199] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:54:29,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:54:29,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 10:54:29,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381785123] [2022-12-14 10:54:29,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:54:29,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:54:29,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:54:29,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:54:29,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:54:29,202 INFO L87 Difference]: Start difference. First operand 2959 states and 4767 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) [2022-12-14 10:54:29,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:29,467 INFO L93 Difference]: Finished difference Result 5211 states and 8398 transitions. [2022-12-14 10:54:29,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:54:29,467 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 [2022-12-14 10:54:29,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:29,482 INFO L225 Difference]: With dead ends: 5211 [2022-12-14 10:54:29,482 INFO L226 Difference]: Without dead ends: 3051 [2022-12-14 10:54:29,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:54:29,492 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 6 mSDsluCounter, 2829 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:29,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3404 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:54:29,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2022-12-14 10:54:29,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 2969. [2022-12-14 10:54:29,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2969 states, 2142 states have (on average 1.5798319327731092) internal successors, (3384), 2192 states have internal predecessors, (3384), 641 states have call successors, (641), 136 states have call predecessors, (641), 185 states have return successors, (752), 673 states have call predecessors, (752), 636 states have call successors, (752) [2022-12-14 10:54:29,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 4777 transitions. [2022-12-14 10:54:29,626 INFO L78 Accepts]: Start accepts. Automaton has 2969 states and 4777 transitions. Word has length 94 [2022-12-14 10:54:29,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:54:29,626 INFO L495 AbstractCegarLoop]: Abstraction has 2969 states and 4777 transitions. [2022-12-14 10:54:29,626 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) [2022-12-14 10:54:29,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2969 states and 4777 transitions. [2022-12-14 10:54:29,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-14 10:54:29,628 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:29,628 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] [2022-12-14 10:54:29,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 10:54:29,628 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:54:29,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:29,629 INFO L85 PathProgramCache]: Analyzing trace with hash 678665937, now seen corresponding path program 1 times [2022-12-14 10:54:29,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:29,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353823918] [2022-12-14 10:54:29,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:29,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:29,936 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 10:54:29,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:29,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353823918] [2022-12-14 10:54:29,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353823918] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:54:29,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:54:29,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 10:54:29,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481252584] [2022-12-14 10:54:29,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:54:29,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 10:54:29,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:54:29,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 10:54:29,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:54:29,938 INFO L87 Difference]: Start difference. First operand 2969 states and 4777 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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) [2022-12-14 10:54:31,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:31,475 INFO L93 Difference]: Finished difference Result 7237 states and 11711 transitions. [2022-12-14 10:54:31,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 10:54:31,476 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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 97 [2022-12-14 10:54:31,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:31,492 INFO L225 Difference]: With dead ends: 7237 [2022-12-14 10:54:31,492 INFO L226 Difference]: Without dead ends: 4827 [2022-12-14 10:54:31,500 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 [2022-12-14 10:54:31,500 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 2089 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 2418 mSolverCounterSat, 863 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2254 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 3281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 863 IncrementalHoareTripleChecker+Valid, 2418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:31,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2254 Valid, 1482 Invalid, 3281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [863 Valid, 2418 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 10:54:31,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4827 states. [2022-12-14 10:54:31,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4827 to 4715. [2022-12-14 10:54:31,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4715 states, 3338 states have (on average 1.5401437986818454) internal successors, (5141), 3437 states have internal predecessors, (5141), 1059 states have call successors, (1059), 240 states have call predecessors, (1059), 317 states have return successors, (1272), 1092 states have call predecessors, (1272), 1054 states have call successors, (1272) [2022-12-14 10:54:31,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4715 states to 4715 states and 7472 transitions. [2022-12-14 10:54:31,722 INFO L78 Accepts]: Start accepts. Automaton has 4715 states and 7472 transitions. Word has length 97 [2022-12-14 10:54:31,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:54:31,722 INFO L495 AbstractCegarLoop]: Abstraction has 4715 states and 7472 transitions. [2022-12-14 10:54:31,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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) [2022-12-14 10:54:31,723 INFO L276 IsEmpty]: Start isEmpty. Operand 4715 states and 7472 transitions. [2022-12-14 10:54:31,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-14 10:54:31,724 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:31,724 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] [2022-12-14 10:54:31,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 10:54:31,725 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:54:31,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:31,725 INFO L85 PathProgramCache]: Analyzing trace with hash 812698455, now seen corresponding path program 1 times [2022-12-14 10:54:31,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:31,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669416754] [2022-12-14 10:54:31,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:31,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 10:54:31,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:31,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669416754] [2022-12-14 10:54:31,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669416754] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:54:31,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:54:31,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 10:54:31,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797219780] [2022-12-14 10:54:31,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:54:31,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:54:31,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:54:31,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:54:31,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:54:31,935 INFO L87 Difference]: Start difference. First operand 4715 states and 7472 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-12-14 10:54:32,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:32,377 INFO L93 Difference]: Finished difference Result 9711 states and 15688 transitions. [2022-12-14 10:54:32,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 10:54:32,378 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), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 100 [2022-12-14 10:54:32,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:32,404 INFO L225 Difference]: With dead ends: 9711 [2022-12-14 10:54:32,404 INFO L226 Difference]: Without dead ends: 5467 [2022-12-14 10:54:32,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:54:32,422 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 243 mSDsluCounter, 2731 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 3333 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:32,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 3333 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:54:32,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5467 states. [2022-12-14 10:54:32,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5467 to 5467. [2022-12-14 10:54:32,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5467 states, 4034 states have (on average 1.5480912245909766) internal successors, (6245), 4153 states have internal predecessors, (6245), 1077 states have call successors, (1077), 258 states have call predecessors, (1077), 355 states have return successors, (1290), 1110 states have call predecessors, (1290), 1072 states have call successors, (1290) [2022-12-14 10:54:32,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5467 states to 5467 states and 8612 transitions. [2022-12-14 10:54:32,687 INFO L78 Accepts]: Start accepts. Automaton has 5467 states and 8612 transitions. Word has length 100 [2022-12-14 10:54:32,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:54:32,687 INFO L495 AbstractCegarLoop]: Abstraction has 5467 states and 8612 transitions. [2022-12-14 10:54:32,688 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), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-12-14 10:54:32,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5467 states and 8612 transitions. [2022-12-14 10:54:32,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-14 10:54:32,690 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:32,690 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] [2022-12-14 10:54:32,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 10:54:32,690 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:54:32,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:32,690 INFO L85 PathProgramCache]: Analyzing trace with hash -2135147148, now seen corresponding path program 1 times [2022-12-14 10:54:32,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:32,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901779248] [2022-12-14 10:54:32,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:32,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:32,898 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 10:54:32,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:32,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901779248] [2022-12-14 10:54:32,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901779248] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:54:32,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:54:32,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 10:54:32,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632536336] [2022-12-14 10:54:32,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:54:32,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:54:32,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:54:32,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:54:32,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:54:32,900 INFO L87 Difference]: Start difference. First operand 5467 states and 8612 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) [2022-12-14 10:54:34,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:34,778 INFO L93 Difference]: Finished difference Result 17352 states and 27977 transitions. [2022-12-14 10:54:34,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 10:54:34,779 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 [2022-12-14 10:54:34,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:34,820 INFO L225 Difference]: With dead ends: 17352 [2022-12-14 10:54:34,821 INFO L226 Difference]: Without dead ends: 11910 [2022-12-14 10:54:34,840 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 [2022-12-14 10:54:34,841 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 2194 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 2767 mSolverCounterSat, 951 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2272 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 3718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 951 IncrementalHoareTripleChecker+Valid, 2767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:34,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2272 Valid, 1531 Invalid, 3718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [951 Valid, 2767 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 10:54:34,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11910 states. [2022-12-14 10:54:35,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11910 to 10941. [2022-12-14 10:54:35,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10941 states, 8058 states have (on average 1.5373541821792007) internal successors, (12388), 8326 states have internal predecessors, (12388), 2162 states have call successors, (2162), 522 states have call predecessors, (2162), 720 states have return successors, (2801), 2232 states have call predecessors, (2801), 2157 states have call successors, (2801) [2022-12-14 10:54:35,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10941 states to 10941 states and 17351 transitions. [2022-12-14 10:54:35,442 INFO L78 Accepts]: Start accepts. Automaton has 10941 states and 17351 transitions. Word has length 101 [2022-12-14 10:54:35,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:54:35,442 INFO L495 AbstractCegarLoop]: Abstraction has 10941 states and 17351 transitions. [2022-12-14 10:54:35,442 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) [2022-12-14 10:54:35,442 INFO L276 IsEmpty]: Start isEmpty. Operand 10941 states and 17351 transitions. [2022-12-14 10:54:35,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-14 10:54:35,444 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:35,444 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] [2022-12-14 10:54:35,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 10:54:35,445 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:54:35,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:35,445 INFO L85 PathProgramCache]: Analyzing trace with hash 677402342, now seen corresponding path program 1 times [2022-12-14 10:54:35,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:35,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096749850] [2022-12-14 10:54:35,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:35,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:35,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 10:54:35,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:35,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096749850] [2022-12-14 10:54:35,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096749850] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:54:35,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:54:35,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 10:54:35,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574485115] [2022-12-14 10:54:35,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:54:35,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:54:35,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:54:35,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:54:35,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:54:35,664 INFO L87 Difference]: Start difference. First operand 10941 states and 17351 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) [2022-12-14 10:54:37,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:37,410 INFO L93 Difference]: Finished difference Result 21454 states and 34207 transitions. [2022-12-14 10:54:37,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 10:54:37,410 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 [2022-12-14 10:54:37,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:37,451 INFO L225 Difference]: With dead ends: 21454 [2022-12-14 10:54:37,451 INFO L226 Difference]: Without dead ends: 12072 [2022-12-14 10:54:37,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-14 10:54:37,476 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 1006 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 2564 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 2975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 2564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:37,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 1677 Invalid, 2975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 2564 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 10:54:37,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12072 states. [2022-12-14 10:54:38,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12072 to 11121. [2022-12-14 10:54:38,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11121 states, 8178 states have (on average 1.5328931279041331) internal successors, (12536), 8474 states have internal predecessors, (12536), 2166 states have call successors, (2166), 554 states have call predecessors, (2166), 776 states have return successors, (2877), 2232 states have call predecessors, (2877), 2161 states have call successors, (2877) [2022-12-14 10:54:38,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11121 states to 11121 states and 17579 transitions. [2022-12-14 10:54:38,091 INFO L78 Accepts]: Start accepts. Automaton has 11121 states and 17579 transitions. Word has length 102 [2022-12-14 10:54:38,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:54:38,091 INFO L495 AbstractCegarLoop]: Abstraction has 11121 states and 17579 transitions. [2022-12-14 10:54:38,091 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) [2022-12-14 10:54:38,091 INFO L276 IsEmpty]: Start isEmpty. Operand 11121 states and 17579 transitions. [2022-12-14 10:54:38,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-14 10:54:38,093 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:38,093 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] [2022-12-14 10:54:38,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 10:54:38,093 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:54:38,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:38,094 INFO L85 PathProgramCache]: Analyzing trace with hash -752708583, now seen corresponding path program 1 times [2022-12-14 10:54:38,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:38,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452335108] [2022-12-14 10:54:38,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:38,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:38,244 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 10:54:38,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:38,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452335108] [2022-12-14 10:54:38,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452335108] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:54:38,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:54:38,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 10:54:38,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465476591] [2022-12-14 10:54:38,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:54:38,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:54:38,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:54:38,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:54:38,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:54:38,246 INFO L87 Difference]: Start difference. First operand 11121 states and 17579 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) [2022-12-14 10:54:39,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:39,030 INFO L93 Difference]: Finished difference Result 11247 states and 17791 transitions. [2022-12-14 10:54:39,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:54:39,031 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 [2022-12-14 10:54:39,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:39,074 INFO L225 Difference]: With dead ends: 11247 [2022-12-14 10:54:39,074 INFO L226 Difference]: Without dead ends: 11232 [2022-12-14 10:54:39,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:54:39,083 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 668 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:39,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1872 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:54:39,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11232 states. [2022-12-14 10:54:39,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11232 to 11129. [2022-12-14 10:54:39,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11129 states, 8186 states have (on average 1.5323723430246763) internal successors, (12544), 8482 states have internal predecessors, (12544), 2166 states have call successors, (2166), 554 states have call predecessors, (2166), 776 states have return successors, (2877), 2232 states have call predecessors, (2877), 2161 states have call successors, (2877) [2022-12-14 10:54:39,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11129 states to 11129 states and 17587 transitions. [2022-12-14 10:54:39,609 INFO L78 Accepts]: Start accepts. Automaton has 11129 states and 17587 transitions. Word has length 106 [2022-12-14 10:54:39,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:54:39,610 INFO L495 AbstractCegarLoop]: Abstraction has 11129 states and 17587 transitions. [2022-12-14 10:54:39,610 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) [2022-12-14 10:54:39,610 INFO L276 IsEmpty]: Start isEmpty. Operand 11129 states and 17587 transitions. [2022-12-14 10:54:39,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-14 10:54:39,611 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:39,611 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] [2022-12-14 10:54:39,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 10:54:39,612 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:54:39,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:39,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1799116662, now seen corresponding path program 1 times [2022-12-14 10:54:39,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:39,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553569230] [2022-12-14 10:54:39,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:39,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:39,859 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 10:54:39,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:39,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553569230] [2022-12-14 10:54:39,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553569230] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:54:39,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:54:39,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 10:54:39,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498819901] [2022-12-14 10:54:39,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:54:39,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:54:39,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:54:39,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:54:39,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:54:39,861 INFO L87 Difference]: Start difference. First operand 11129 states and 17587 transitions. Second operand has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 10:54:40,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:40,757 INFO L93 Difference]: Finished difference Result 11524 states and 18168 transitions. [2022-12-14 10:54:40,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 10:54:40,758 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) Word has length 111 [2022-12-14 10:54:40,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:40,783 INFO L225 Difference]: With dead ends: 11524 [2022-12-14 10:54:40,783 INFO L226 Difference]: Without dead ends: 11509 [2022-12-14 10:54:40,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-12-14 10:54:40,788 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 631 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:40,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 2790 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:54:40,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11509 states. [2022-12-14 10:54:41,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11509 to 11333. [2022-12-14 10:54:41,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11333 states, 8324 states have (on average 1.5276309466602596) internal successors, (12716), 8620 states have internal predecessors, (12716), 2205 states have call successors, (2205), 581 states have call predecessors, (2205), 803 states have return successors, (2965), 2271 states have call predecessors, (2965), 2200 states have call successors, (2965) [2022-12-14 10:54:41,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11333 states to 11333 states and 17886 transitions. [2022-12-14 10:54:41,340 INFO L78 Accepts]: Start accepts. Automaton has 11333 states and 17886 transitions. Word has length 111 [2022-12-14 10:54:41,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:54:41,340 INFO L495 AbstractCegarLoop]: Abstraction has 11333 states and 17886 transitions. [2022-12-14 10:54:41,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 10:54:41,340 INFO L276 IsEmpty]: Start isEmpty. Operand 11333 states and 17886 transitions. [2022-12-14 10:54:41,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-12-14 10:54:41,343 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:41,343 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] [2022-12-14 10:54:41,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 10:54:41,343 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:54:41,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:41,343 INFO L85 PathProgramCache]: Analyzing trace with hash -95039680, now seen corresponding path program 1 times [2022-12-14 10:54:41,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:41,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757429524] [2022-12-14 10:54:41,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:41,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:41,693 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 10:54:41,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:41,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757429524] [2022-12-14 10:54:41,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757429524] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:54:41,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:54:41,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 10:54:41,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743385518] [2022-12-14 10:54:41,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:54:41,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 10:54:41,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:54:41,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 10:54:41,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:54:41,696 INFO L87 Difference]: Start difference. First operand 11333 states and 17886 transitions. Second operand has 9 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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) [2022-12-14 10:54:45,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:45,799 INFO L93 Difference]: Finished difference Result 32055 states and 51217 transitions. [2022-12-14 10:54:45,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 10:54:45,800 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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 118 [2022-12-14 10:54:45,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:45,871 INFO L225 Difference]: With dead ends: 32055 [2022-12-14 10:54:45,871 INFO L226 Difference]: Without dead ends: 20745 [2022-12-14 10:54:45,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-12-14 10:54:45,909 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 3563 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 2923 mSolverCounterSat, 1445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3633 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 4368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1445 IncrementalHoareTripleChecker+Valid, 2923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:45,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3633 Valid, 1551 Invalid, 4368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1445 Valid, 2923 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 10:54:45,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20745 states. [2022-12-14 10:54:46,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20745 to 18695. [2022-12-14 10:54:46,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18695 states, 13589 states have (on average 1.5355066597983664) internal successors, (20866), 14212 states have internal predecessors, (20866), 3815 states have call successors, (3815), 917 states have call predecessors, (3815), 1290 states have return successors, (5073), 3785 states have call predecessors, (5073), 3810 states have call successors, (5073) [2022-12-14 10:54:47,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18695 states to 18695 states and 29754 transitions. [2022-12-14 10:54:47,041 INFO L78 Accepts]: Start accepts. Automaton has 18695 states and 29754 transitions. Word has length 118 [2022-12-14 10:54:47,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:54:47,042 INFO L495 AbstractCegarLoop]: Abstraction has 18695 states and 29754 transitions. [2022-12-14 10:54:47,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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) [2022-12-14 10:54:47,042 INFO L276 IsEmpty]: Start isEmpty. Operand 18695 states and 29754 transitions. [2022-12-14 10:54:47,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-12-14 10:54:47,044 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:47,044 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] [2022-12-14 10:54:47,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 10:54:47,044 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:54:47,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:47,044 INFO L85 PathProgramCache]: Analyzing trace with hash 379318409, now seen corresponding path program 1 times [2022-12-14 10:54:47,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:47,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7520256] [2022-12-14 10:54:47,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:47,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:48,151 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 10:54:48,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:48,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7520256] [2022-12-14 10:54:48,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7520256] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:54:48,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473908592] [2022-12-14 10:54:48,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:48,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:54:48,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:54:48,153 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:54:48,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:54:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:48,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 2113 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-14 10:54:48,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:54:50,371 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 10:54:50,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:54:52,586 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 10:54:52,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473908592] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:54:52,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1747217850] [2022-12-14 10:54:52,605 INFO L159 IcfgInterpreter]: Started Sifa with 111 locations of interest [2022-12-14 10:54:52,605 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:54:52,608 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:54:52,612 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:54:52,612 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:54:57,479 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 592 for LOIs [2022-12-14 10:55:54,654 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 592 for LOIs [2022-12-14 10:55:58,064 INFO L197 IcfgInterpreter]: Interpreting procedure areDoorsOpen with input of size 443 for LOIs [2022-12-14 10:55:58,132 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__twothirdsfull with input of size 577 for LOIs [2022-12-14 10:56:02,956 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 107 for LOIs [2022-12-14 10:56:03,422 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection__wrappee__weight with input of size 121 for LOIs [2022-12-14 10:56:03,924 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 33 for LOIs [2022-12-14 10:56:03,932 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 76 for LOIs [2022-12-14 10:56:03,947 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 33 for LOIs [2022-12-14 10:56:03,949 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 597 for LOIs [2022-12-14 10:56:07,404 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 461 for LOIs [2022-12-14 10:56:07,669 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 106 for LOIs [2022-12-14 10:56:07,944 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 98 for LOIs [2022-12-14 10:56:07,955 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 560 for LOIs [2022-12-14 10:56:10,477 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 837 for LOIs [2022-12-14 10:56:54,282 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 664 for LOIs [2022-12-14 10:56:54,757 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:57:05,544 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 664 DAG size of output: 525 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:57:12,514 WARN L233 SmtUtils]: Spent 6.60s on a formula simplification. DAG size of input: 704 DAG size of output: 539 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:57:35,444 WARN L233 SmtUtils]: Spent 12.36s on a formula simplification. DAG size of input: 837 DAG size of output: 688 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:57:54,676 WARN L233 SmtUtils]: Spent 17.50s on a formula simplification. DAG size of input: 989 DAG size of output: 709 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:59:35,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1747217850] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:59:35,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:59:35,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [17, 12, 12] total 111 [2022-12-14 10:59:35,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323822921] [2022-12-14 10:59:35,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:59:35,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-12-14 10:59:35,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:59:35,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-12-14 10:59:35,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=735, Invalid=11475, Unknown=0, NotChecked=0, Total=12210 [2022-12-14 10:59:35,343 INFO L87 Difference]: Start difference. First operand 18695 states and 29754 transitions. Second operand has 79 states, 64 states have (on average 1.125) internal successors, (72), 50 states have internal predecessors, (72), 21 states have call successors, (22), 16 states have call predecessors, (22), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-12-14 10:59:41,184 WARN L233 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 646 DAG size of output: 600 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:59:46,604 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 658 DAG size of output: 607 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:00:10,352 WARN L233 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 713 DAG size of output: 582 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:03:13,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:03:13,545 INFO L93 Difference]: Finished difference Result 46737 states and 74481 transitions. [2022-12-14 11:03:13,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-12-14 11:03:13,547 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 64 states have (on average 1.125) internal successors, (72), 50 states have internal predecessors, (72), 21 states have call successors, (22), 16 states have call predecessors, (22), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) Word has length 120 [2022-12-14 11:03:13,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:03:13,642 INFO L225 Difference]: With dead ends: 46737 [2022-12-14 11:03:13,642 INFO L226 Difference]: Without dead ends: 28051 [2022-12-14 11:03:13,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 265 SyntacticMatches, 8 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9807 ImplicationChecksByTransitivity, 288.7s TimeCoverageRelationStatistics Valid=1515, Invalid=25217, Unknown=0, NotChecked=0, Total=26732 [2022-12-14 11:03:13,709 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 1431 mSDsluCounter, 8553 mSDsCounter, 0 mSdLazyCounter, 30062 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 9168 SdHoareTripleChecker+Invalid, 30384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 30062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 87.7s IncrementalHoareTripleChecker+Time [2022-12-14 11:03:13,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1441 Valid, 9168 Invalid, 30384 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [322 Valid, 30062 Invalid, 0 Unknown, 0 Unchecked, 87.7s Time] [2022-12-14 11:03:13,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28051 states. [2022-12-14 11:03:15,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28051 to 26451. [2022-12-14 11:03:15,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26451 states, 19274 states have (on average 1.5271350005188336) internal successors, (29434), 20114 states have internal predecessors, (29434), 5359 states have call successors, (5359), 1302 states have call predecessors, (5359), 1817 states have return successors, (7089), 5352 states have call predecessors, (7089), 5354 states have call successors, (7089) [2022-12-14 11:03:16,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26451 states to 26451 states and 41882 transitions. [2022-12-14 11:03:16,082 INFO L78 Accepts]: Start accepts. Automaton has 26451 states and 41882 transitions. Word has length 120 [2022-12-14 11:03:16,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:03:16,082 INFO L495 AbstractCegarLoop]: Abstraction has 26451 states and 41882 transitions. [2022-12-14 11:03:16,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 64 states have (on average 1.125) internal successors, (72), 50 states have internal predecessors, (72), 21 states have call successors, (22), 16 states have call predecessors, (22), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-12-14 11:03:16,083 INFO L276 IsEmpty]: Start isEmpty. Operand 26451 states and 41882 transitions. [2022-12-14 11:03:16,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-14 11:03:16,084 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:03:16,085 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] [2022-12-14 11:03:16,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:03:16,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 11:03:16,287 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:03:16,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:03:16,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1171546993, now seen corresponding path program 1 times [2022-12-14 11:03:16,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:03:16,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913701730] [2022-12-14 11:03:16,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:03:16,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:03:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:03:17,290 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 11:03:17,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:03:17,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913701730] [2022-12-14 11:03:17,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913701730] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:03:17,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293997211] [2022-12-14 11:03:17,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:03:17,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:03:17,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:03:17,291 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:03:17,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 11:03:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:03:17,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 2116 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:03:17,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:03:17,597 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 11:03:17,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:03:17,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293997211] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:03:17,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:03:17,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [17] total 17 [2022-12-14 11:03:17,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665276222] [2022-12-14 11:03:17,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:03:17,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:03:17,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:03:17,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:03:17,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-12-14 11:03:17,599 INFO L87 Difference]: Start difference. First operand 26451 states and 41882 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 11:03:22,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:03:22,018 INFO L93 Difference]: Finished difference Result 74711 states and 119376 transitions. [2022-12-14 11:03:22,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:03:22,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 121 [2022-12-14 11:03:22,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:03:22,203 INFO L225 Difference]: With dead ends: 74711 [2022-12-14 11:03:22,203 INFO L226 Difference]: Without dead ends: 50649 [2022-12-14 11:03:22,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-12-14 11:03:22,282 INFO L413 NwaCegarLoop]: 1079 mSDtfsCounter, 555 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:03:22,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 1627 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:03:22,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50649 states. [2022-12-14 11:03:26,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50649 to 50647. [2022-12-14 11:03:26,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50647 states, 36828 states have (on average 1.5281850765721734) internal successors, (56280), 38505 states have internal predecessors, (56280), 10344 states have call successors, (10344), 2470 states have call predecessors, (10344), 3474 states have return successors, (14011), 10307 states have call predecessors, (14011), 10339 states have call successors, (14011) [2022-12-14 11:03:26,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50647 states to 50647 states and 80635 transitions. [2022-12-14 11:03:26,775 INFO L78 Accepts]: Start accepts. Automaton has 50647 states and 80635 transitions. Word has length 121 [2022-12-14 11:03:26,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:03:26,776 INFO L495 AbstractCegarLoop]: Abstraction has 50647 states and 80635 transitions. [2022-12-14 11:03:26,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 11:03:26,776 INFO L276 IsEmpty]: Start isEmpty. Operand 50647 states and 80635 transitions. [2022-12-14 11:03:26,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-14 11:03:26,778 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:03:26,778 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] [2022-12-14 11:03:26,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 11:03:26,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 11:03:26,979 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:03:26,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:03:26,981 INFO L85 PathProgramCache]: Analyzing trace with hash 2025307193, now seen corresponding path program 1 times [2022-12-14 11:03:26,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:03:26,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641711232] [2022-12-14 11:03:26,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:03:26,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:03:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:03:27,164 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 11:03:27,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:03:27,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641711232] [2022-12-14 11:03:27,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641711232] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:03:27,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:03:27,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 11:03:27,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144510687] [2022-12-14 11:03:27,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:03:27,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:03:27,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:03:27,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:03:27,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:03:27,166 INFO L87 Difference]: Start difference. First operand 50647 states and 80635 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-14 11:03:37,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:03:37,234 INFO L93 Difference]: Finished difference Result 149022 states and 242299 transitions. [2022-12-14 11:03:37,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:03:37,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 121 [2022-12-14 11:03:37,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:03:37,669 INFO L225 Difference]: With dead ends: 149022 [2022-12-14 11:03:37,669 INFO L226 Difference]: Without dead ends: 99589 [2022-12-14 11:03:37,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:03:37,875 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 1329 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 2422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 11:03:37,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1396 Valid, 980 Invalid, 2422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 1932 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-14 11:03:37,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99589 states. [2022-12-14 11:03:45,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99589 to 94271. [2022-12-14 11:03:45,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94271 states, 70168 states have (on average 1.535514764565044) internal successors, (107744), 73075 states have internal predecessors, (107744), 17584 states have call successors, (17584), 4582 states have call predecessors, (17584), 6518 states have return successors, (26610), 17533 states have call predecessors, (26610), 17579 states have call successors, (26610) [2022-12-14 11:03:46,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94271 states to 94271 states and 151938 transitions. [2022-12-14 11:03:46,275 INFO L78 Accepts]: Start accepts. Automaton has 94271 states and 151938 transitions. Word has length 121 [2022-12-14 11:03:46,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:03:46,275 INFO L495 AbstractCegarLoop]: Abstraction has 94271 states and 151938 transitions. [2022-12-14 11:03:46,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-14 11:03:46,275 INFO L276 IsEmpty]: Start isEmpty. Operand 94271 states and 151938 transitions. [2022-12-14 11:03:46,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-14 11:03:46,278 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:03:46,278 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] [2022-12-14 11:03:46,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 11:03:46,278 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:03:46,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:03:46,278 INFO L85 PathProgramCache]: Analyzing trace with hash 967223793, now seen corresponding path program 1 times [2022-12-14 11:03:46,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:03:46,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983620571] [2022-12-14 11:03:46,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:03:46,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:03:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:03:47,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 11:03:47,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:03:47,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983620571] [2022-12-14 11:03:47,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983620571] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:03:47,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666269866] [2022-12-14 11:03:47,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:03:47,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:03:47,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:03:47,368 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:03:47,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2aec4b-c819-472c-9213-dda027721824/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 11:03:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:03:47,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 2116 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-14 11:03:47,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:03:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 11:03:48,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:03:50,791 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 11:03:50,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666269866] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:03:50,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [383513352] [2022-12-14 11:03:50,796 INFO L159 IcfgInterpreter]: Started Sifa with 112 locations of interest [2022-12-14 11:03:50,796 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:03:50,797 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:03:50,797 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:03:50,797 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:03:55,396 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 592 for LOIs [2022-12-14 11:04:50,289 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 592 for LOIs [2022-12-14 11:05:22,531 INFO L197 IcfgInterpreter]: Interpreting procedure areDoorsOpen with input of size 443 for LOIs [2022-12-14 11:05:22,598 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__twothirdsfull with input of size 577 for LOIs [2022-12-14 11:05:27,265 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 107 for LOIs [2022-12-14 11:05:27,706 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection__wrappee__weight with input of size 121 for LOIs [2022-12-14 11:05:28,202 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 31 for LOIs [2022-12-14 11:05:28,210 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 76 for LOIs [2022-12-14 11:05:28,225 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 453 for LOIs [2022-12-14 11:05:28,473 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 597 for LOIs [2022-12-14 11:05:31,913 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 456 for LOIs [2022-12-14 11:05:32,172 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 106 for LOIs [2022-12-14 11:05:32,468 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 98 for LOIs [2022-12-14 11:05:32,479 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 560 for LOIs [2022-12-14 11:05:34,986 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 837 for LOIs [2022-12-14 11:07:33,996 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 664 for LOIs [2022-12-14 11:07:34,471 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:07:47,862 WARN L233 SmtUtils]: Spent 7.32s on a formula simplification. DAG size of input: 664 DAG size of output: 525 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:07:54,697 WARN L233 SmtUtils]: Spent 6.45s on a formula simplification. DAG size of input: 704 DAG size of output: 539 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)