./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur --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 329a2716e4212f7d84877599b73bf84d73c2c4b19cd8d5bf0b2cb6bd49bef38d --- 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-38b53e6 [2022-11-25 23:34:05,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:34:05,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:34:05,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:34:05,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:34:05,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:34:05,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:34:05,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:34:05,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:34:05,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:34:05,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:34:05,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:34:05,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:34:05,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:34:05,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:34:05,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:34:05,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:34:05,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:34:05,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:34:05,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:34:05,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:34:05,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:34:05,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:34:05,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:34:05,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:34:05,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:34:05,543 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:34:05,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:34:05,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:34:05,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:34:05,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:34:05,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:34:05,548 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:34:05,549 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:34:05,550 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:34:05,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:34:05,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:34:05,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:34:05,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:34:05,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:34:05,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:34:05,555 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:34:05,580 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:34:05,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:34:05,581 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:34:05,581 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:34:05,582 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:34:05,582 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:34:05,583 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:34:05,583 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:34:05,583 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:34:05,584 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:34:05,584 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:34:05,584 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:34:05,584 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:34:05,585 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:34:05,585 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:34:05,585 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:34:05,585 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:34:05,586 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:34:05,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:34:05,587 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:34:05,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:34:05,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:34:05,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:34:05,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:34:05,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:34:05,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:34:05,588 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:34:05,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:34:05,589 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:34:05,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:34:05,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:34:05,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:34:05,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:34:05,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:34:05,590 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:34:05,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:34:05,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:34:05,591 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:34:05,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:34:05,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:34:05,592 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:34:05,592 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_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 329a2716e4212f7d84877599b73bf84d73c2c4b19cd8d5bf0b2cb6bd49bef38d [2022-11-25 23:34:05,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:34:05,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:34:05,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:34:05,852 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:34:05,852 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:34:05,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c [2022-11-25 23:34:08,976 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:34:09,361 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:34:09,361 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c [2022-11-25 23:34:09,385 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/data/b5965bd5f/4d063c42f40d4229a39630a8cbe6b443/FLAGcf25f26d8 [2022-11-25 23:34:09,399 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/data/b5965bd5f/4d063c42f40d4229a39630a8cbe6b443 [2022-11-25 23:34:09,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:34:09,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:34:09,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:34:09,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:34:09,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:34:09,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:34:09" (1/1) ... [2022-11-25 23:34:09,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d74e489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:09, skipping insertion in model container [2022-11-25 23:34:09,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:34:09" (1/1) ... [2022-11-25 23:34:09,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:34:09,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:34:09,928 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_6afcbce2-0782-423a-a4c5-0e5ca96aca47/sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c[61467,61480] [2022-11-25 23:34:09,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:34:10,020 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:34:10,167 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_6afcbce2-0782-423a-a4c5-0e5ca96aca47/sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c[61467,61480] [2022-11-25 23:34:10,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:34:10,206 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:34:10,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:10 WrapperNode [2022-11-25 23:34:10,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:34:10,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:34:10,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:34:10,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:34:10,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:10" (1/1) ... [2022-11-25 23:34:10,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:10" (1/1) ... [2022-11-25 23:34:10,329 INFO L138 Inliner]: procedures = 94, calls = 341, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1108 [2022-11-25 23:34:10,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:34:10,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:34:10,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:34:10,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:34:10,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:10" (1/1) ... [2022-11-25 23:34:10,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:10" (1/1) ... [2022-11-25 23:34:10,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:10" (1/1) ... [2022-11-25 23:34:10,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:10" (1/1) ... [2022-11-25 23:34:10,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:10" (1/1) ... [2022-11-25 23:34:10,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:10" (1/1) ... [2022-11-25 23:34:10,390 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:10" (1/1) ... [2022-11-25 23:34:10,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:10" (1/1) ... [2022-11-25 23:34:10,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:34:10,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:34:10,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:34:10,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:34:10,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:10" (1/1) ... [2022-11-25 23:34:10,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:34:10,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:34:10,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:34:10,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:34:10,549 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-25 23:34:10,549 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-25 23:34:10,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:34:10,550 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-25 23:34:10,550 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-25 23:34:10,550 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-25 23:34:10,550 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-25 23:34:10,550 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2022-11-25 23:34:10,551 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2022-11-25 23:34:10,551 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-25 23:34:10,551 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-25 23:34:10,551 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-11-25 23:34:10,551 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-11-25 23:34:10,551 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-25 23:34:10,552 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-25 23:34:10,552 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-25 23:34:10,553 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-25 23:34:10,553 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-25 23:34:10,553 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-25 23:34:10,553 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-25 23:34:10,554 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-25 23:34:10,554 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-25 23:34:10,554 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-25 23:34:10,555 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-25 23:34:10,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-25 23:34:10,556 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-25 23:34:10,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-25 23:34:10,556 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-25 23:34:10,556 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-25 23:34:10,556 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-25 23:34:10,558 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-25 23:34:10,558 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-25 23:34:10,558 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-25 23:34:10,558 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-25 23:34:10,559 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-25 23:34:10,559 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-25 23:34:10,559 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-25 23:34:10,559 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-25 23:34:10,559 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-25 23:34:10,560 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-25 23:34:10,560 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-25 23:34:10,560 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-25 23:34:10,560 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-25 23:34:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:34:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-25 23:34:10,561 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-25 23:34:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-25 23:34:10,562 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-25 23:34:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-25 23:34:10,562 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-25 23:34:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:34:10,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:34:10,563 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-25 23:34:10,563 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-25 23:34:10,770 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:34:10,784 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:34:12,130 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:34:12,940 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:34:12,940 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:34:12,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:34:12 BoogieIcfgContainer [2022-11-25 23:34:12,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:34:12,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:34:12,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:34:12,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:34:12,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:34:09" (1/3) ... [2022-11-25 23:34:12,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5097e984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:34:12, skipping insertion in model container [2022-11-25 23:34:12,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:10" (2/3) ... [2022-11-25 23:34:12,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5097e984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:34:12, skipping insertion in model container [2022-11-25 23:34:12,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:34:12" (3/3) ... [2022-11-25 23:34:12,970 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product19.cil.c [2022-11-25 23:34:12,989 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:34:12,989 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:34:13,068 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:34:13,076 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;@f265bf3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:34:13,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:34:13,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 381 states, 255 states have (on average 1.588235294117647) internal successors, (405), 276 states have internal predecessors, (405), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) [2022-11-25 23:34:13,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-25 23:34:13,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:13,117 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:34:13,118 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:34:13,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:13,130 INFO L85 PathProgramCache]: Analyzing trace with hash -98102543, now seen corresponding path program 1 times [2022-11-25 23:34:13,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:13,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429715977] [2022-11-25 23:34:13,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:13,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:13,775 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 23:34:13,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:34:13,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429715977] [2022-11-25 23:34:13,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429715977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:34:13,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:34:13,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:34:13,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920870321] [2022-11-25 23:34:13,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:34:13,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 23:34:13,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:34:13,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 23:34:13,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 23:34:13,840 INFO L87 Difference]: Start difference. First operand has 381 states, 255 states have (on average 1.588235294117647) internal successors, (405), 276 states have internal predecessors, (405), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-25 23:34:14,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:34:14,090 INFO L93 Difference]: Finished difference Result 399 states and 630 transitions. [2022-11-25 23:34:14,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 23:34:14,092 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 88 [2022-11-25 23:34:14,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:34:14,117 INFO L225 Difference]: With dead ends: 399 [2022-11-25 23:34:14,118 INFO L226 Difference]: Without dead ends: 377 [2022-11-25 23:34:14,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 23:34:14,129 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:34:14,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 560 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:34:14,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-11-25 23:34:14,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2022-11-25 23:34:14,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 253 states have (on average 1.5770750988142292) internal successors, (399), 272 states have internal predecessors, (399), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-25 23:34:14,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 592 transitions. [2022-11-25 23:34:14,246 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 592 transitions. Word has length 88 [2022-11-25 23:34:14,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:34:14,249 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 592 transitions. [2022-11-25 23:34:14,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-25 23:34:14,254 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 592 transitions. [2022-11-25 23:34:14,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-25 23:34:14,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:14,264 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:34:14,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:34:14,265 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:34:14,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:14,266 INFO L85 PathProgramCache]: Analyzing trace with hash -2091135567, now seen corresponding path program 1 times [2022-11-25 23:34:14,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:14,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468479690] [2022-11-25 23:34:14,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:14,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:14,974 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 23:34:14,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:34:14,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468479690] [2022-11-25 23:34:14,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468479690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:34:14,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:34:14,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:34:14,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442412091] [2022-11-25 23:34:14,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:34:14,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:34:14,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:34:14,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:34:14,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:34:14,979 INFO L87 Difference]: Start difference. First operand 377 states and 592 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-25 23:34:17,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:34:17,692 INFO L93 Difference]: Finished difference Result 1148 states and 1837 transitions. [2022-11-25 23:34:17,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 23:34:17,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 89 [2022-11-25 23:34:17,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:34:17,703 INFO L225 Difference]: With dead ends: 1148 [2022-11-25 23:34:17,704 INFO L226 Difference]: Without dead ends: 794 [2022-11-25 23:34:17,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:34:17,717 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 1153 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 2956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:34:17,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1230 Valid, 1608 Invalid, 2956 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [433 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-25 23:34:17,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-11-25 23:34:17,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 745. [2022-11-25 23:34:17,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 510 states have (on average 1.592156862745098) internal successors, (812), 543 states have internal predecessors, (812), 189 states have call successors, (189), 45 states have call predecessors, (189), 45 states have return successors, (190), 181 states have call predecessors, (190), 184 states have call successors, (190) [2022-11-25 23:34:17,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1191 transitions. [2022-11-25 23:34:17,826 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1191 transitions. Word has length 89 [2022-11-25 23:34:17,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:34:17,829 INFO L495 AbstractCegarLoop]: Abstraction has 745 states and 1191 transitions. [2022-11-25 23:34:17,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-25 23:34:17,829 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1191 transitions. [2022-11-25 23:34:17,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-25 23:34:17,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:17,835 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:34:17,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:34:17,836 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:34:17,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:17,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1892573109, now seen corresponding path program 1 times [2022-11-25 23:34:17,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:17,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827267593] [2022-11-25 23:34:17,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:17,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:18,301 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 23:34:18,301 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:34:18,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827267593] [2022-11-25 23:34:18,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827267593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:34:18,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:34:18,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:34:18,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609979878] [2022-11-25 23:34:18,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:34:18,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:34:18,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:34:18,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:34:18,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:34:18,304 INFO L87 Difference]: Start difference. First operand 745 states and 1191 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 23:34:19,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:34:19,029 INFO L93 Difference]: Finished difference Result 816 states and 1303 transitions. [2022-11-25 23:34:19,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:34:19,030 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 93 [2022-11-25 23:34:19,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:34:19,036 INFO L225 Difference]: With dead ends: 816 [2022-11-25 23:34:19,036 INFO L226 Difference]: Without dead ends: 801 [2022-11-25 23:34:19,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:34:19,038 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 685 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:34:19,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 1832 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 23:34:19,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-11-25 23:34:19,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 749. [2022-11-25 23:34:19,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 514 states have (on average 1.5875486381322956) internal successors, (816), 547 states have internal predecessors, (816), 189 states have call successors, (189), 45 states have call predecessors, (189), 45 states have return successors, (190), 181 states have call predecessors, (190), 184 states have call successors, (190) [2022-11-25 23:34:19,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1195 transitions. [2022-11-25 23:34:19,096 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1195 transitions. Word has length 93 [2022-11-25 23:34:19,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:34:19,097 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 1195 transitions. [2022-11-25 23:34:19,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 23:34:19,097 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1195 transitions. [2022-11-25 23:34:19,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-25 23:34:19,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:19,100 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:34:19,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:34:19,101 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:34:19,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:19,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1844224197, now seen corresponding path program 1 times [2022-11-25 23:34:19,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:19,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727376024] [2022-11-25 23:34:19,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:19,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:19,369 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 23:34:19,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:34:19,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727376024] [2022-11-25 23:34:19,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727376024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:34:19,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:34:19,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:34:19,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773239972] [2022-11-25 23:34:19,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:34:19,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:34:19,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:34:19,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:34:19,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:34:19,385 INFO L87 Difference]: Start difference. First operand 749 states and 1195 transitions. Second operand has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-25 23:34:19,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:34:19,565 INFO L93 Difference]: Finished difference Result 768 states and 1219 transitions. [2022-11-25 23:34:19,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 23:34:19,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) Word has length 98 [2022-11-25 23:34:19,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:34:19,571 INFO L225 Difference]: With dead ends: 768 [2022-11-25 23:34:19,571 INFO L226 Difference]: Without dead ends: 753 [2022-11-25 23:34:19,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:34:19,573 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 30 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2198 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:34:19,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 2198 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:34:19,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-11-25 23:34:19,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 749. [2022-11-25 23:34:19,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 514 states have (on average 1.583657587548638) internal successors, (814), 547 states have internal predecessors, (814), 189 states have call successors, (189), 45 states have call predecessors, (189), 45 states have return successors, (190), 181 states have call predecessors, (190), 184 states have call successors, (190) [2022-11-25 23:34:19,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1193 transitions. [2022-11-25 23:34:19,626 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1193 transitions. Word has length 98 [2022-11-25 23:34:19,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:34:19,627 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 1193 transitions. [2022-11-25 23:34:19,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-25 23:34:19,627 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1193 transitions. [2022-11-25 23:34:19,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-25 23:34:19,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:19,630 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:34:19,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:34:19,630 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:34:19,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:19,631 INFO L85 PathProgramCache]: Analyzing trace with hash -296829178, now seen corresponding path program 1 times [2022-11-25 23:34:19,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:19,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976635588] [2022-11-25 23:34:19,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:19,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:26,288 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 23:34:26,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:34:26,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976635588] [2022-11-25 23:34:26,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976635588] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:34:26,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291597202] [2022-11-25 23:34:26,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:26,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:34:26,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:34:26,295 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:34:26,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:34:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:26,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 1852 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 23:34:26,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:34:26,903 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-25 23:34:26,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:34:26,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291597202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:34:26,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:34:26,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [31] total 33 [2022-11-25 23:34:26,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035537740] [2022-11-25 23:34:26,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:34:26,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:34:26,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:34:26,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:34:26,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=978, Unknown=0, NotChecked=0, Total=1056 [2022-11-25 23:34:26,905 INFO L87 Difference]: Start difference. First operand 749 states and 1193 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-25 23:34:27,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:34:27,140 INFO L93 Difference]: Finished difference Result 832 states and 1317 transitions. [2022-11-25 23:34:27,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:34:27,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 105 [2022-11-25 23:34:27,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:34:27,150 INFO L225 Difference]: With dead ends: 832 [2022-11-25 23:34:27,150 INFO L226 Difference]: Without dead ends: 817 [2022-11-25 23:34:27,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=1040, Unknown=0, NotChecked=0, Total=1122 [2022-11-25 23:34:27,155 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 44 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:34:27,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 1729 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:34:27,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-11-25 23:34:27,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 753. [2022-11-25 23:34:27,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 518 states have (on average 1.579150579150579) internal successors, (818), 551 states have internal predecessors, (818), 189 states have call successors, (189), 45 states have call predecessors, (189), 45 states have return successors, (190), 181 states have call predecessors, (190), 184 states have call successors, (190) [2022-11-25 23:34:27,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1197 transitions. [2022-11-25 23:34:27,214 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1197 transitions. Word has length 105 [2022-11-25 23:34:27,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:34:27,215 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1197 transitions. [2022-11-25 23:34:27,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-25 23:34:27,215 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1197 transitions. [2022-11-25 23:34:27,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-25 23:34:27,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:27,219 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:34:27,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:34:27,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:34:27,427 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:34:27,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:27,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1587849353, now seen corresponding path program 1 times [2022-11-25 23:34:27,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:27,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58007775] [2022-11-25 23:34:27,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:27,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:29,260 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-25 23:34:29,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:34:29,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58007775] [2022-11-25 23:34:29,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58007775] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:34:29,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230026781] [2022-11-25 23:34:29,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:29,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:34:29,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:34:29,263 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:34:29,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:34:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:29,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 1916 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-25 23:34:29,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:34:30,479 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 23:34:30,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:35:23,209 WARN L233 SmtUtils]: Spent 50.17s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:36:13,609 WARN L233 SmtUtils]: Spent 49.78s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:36:14,363 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-25 23:36:14,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230026781] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:36:14,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [160194213] [2022-11-25 23:36:14,389 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2022-11-25 23:36:14,389 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:36:14,396 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:36:14,402 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:36:14,402 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:36:22,488 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 435 for LOIs [2022-11-25 23:36:22,563 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 586 for LOIs [2022-11-25 23:36:26,052 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 586 for LOIs [2022-11-25 23:36:37,355 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 447 for LOIs [2022-11-25 23:36:39,579 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 501 for LOIs [2022-11-25 23:36:41,634 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 55 for LOIs [2022-11-25 23:36:41,647 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 109 for LOIs [2022-11-25 23:36:41,661 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 593 for LOIs [2022-11-25 23:36:45,348 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 31 for LOIs [2022-11-25 23:36:45,351 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 455 for LOIs [2022-11-25 23:36:46,298 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 449 for LOIs [2022-11-25 23:36:46,372 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 556 for LOIs [2022-11-25 23:36:48,950 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 833 for LOIs [2022-11-25 23:36:56,808 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 660 for LOIs [2022-11-25 23:36:57,271 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:37:18,736 WARN L233 SmtUtils]: Spent 10.90s on a formula simplification. DAG size of input: 660 DAG size of output: 521 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:37:30,505 WARN L233 SmtUtils]: Spent 11.25s on a formula simplification. DAG size of input: 700 DAG size of output: 535 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:37:38,858 WARN L233 SmtUtils]: Spent 7.91s on a formula simplification. DAG size of input: 675 DAG size of output: 613 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:37:47,228 WARN L233 SmtUtils]: Spent 7.89s on a formula simplification. DAG size of input: 675 DAG size of output: 613 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:38:08,644 WARN L233 SmtUtils]: Spent 20.69s on a formula simplification. DAG size of input: 833 DAG size of output: 684 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:38:28,157 WARN L233 SmtUtils]: Spent 18.56s on a formula simplification. DAG size of input: 901 DAG size of output: 809 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:39:06,250 WARN L233 SmtUtils]: Spent 9.70s on a formula simplification. DAG size of input: 501 DAG size of output: 442 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:39:14,120 WARN L233 SmtUtils]: Spent 5.99s on a formula simplification. DAG size of input: 628 DAG size of output: 602 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:39:20,752 WARN L233 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 628 DAG size of output: 602 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:39:27,428 WARN L233 SmtUtils]: Spent 6.00s on a formula simplification. DAG size of input: 630 DAG size of output: 604 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:39:35,448 WARN L233 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 634 DAG size of output: 607 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:39:42,451 WARN L233 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 634 DAG size of output: 607 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:39:49,428 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 640 DAG size of output: 611 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:39:56,723 WARN L233 SmtUtils]: Spent 6.51s on a formula simplification. DAG size of input: 645 DAG size of output: 613 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:40:03,749 WARN L233 SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 641 DAG size of output: 613 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:40:41,326 WARN L233 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 653 DAG size of output: 622 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:40:48,859 WARN L233 SmtUtils]: Spent 6.62s on a formula simplification. DAG size of input: 653 DAG size of output: 622 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:41:57,153 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11884#(and (= 30 (select |#length| 34)) (= (select (select |#memory_int| 23) 0) 32) (= 6 (select |#length| 18)) (= 116 (select (select |#memory_int| 7) 2)) (= (select |#valid| 30) 1) (= (select (select |#memory_int| 20) 1) 37) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select |#valid| 15) 1) (= ~executiveFloor~0 4) (= (select |#length| 21) 4) (= (select (select |#memory_int| 21) 1) 37) (<= 0 (+ ~currentFloorID~0 2147483648)) (= (select (select |#memory_int| 23) 1) 37) (= (select (select |#memory_int| 20) 3) 0) (= (select (select |#memory_int| 22) 3) 0) (= (select (select |#memory_int| 5) 3) 0) (= 4 (select |#length| 16)) (= 3 (select |#length| 10)) (= ~floorButtons_3~0 0) (= (select (select |#memory_int| 22) 0) 32) (= (select (select |#memory_int| 13) 3) 0) (= (select |#valid| 26) 1) (= (select |#length| 4) 10) (<= ~currentHeading~0 1) (= (select |#length| 8) 3) (= (select |#length| 6) 4) (= (select (select |#memory_int| 13) 1) 37) (= (select |#valid| 35) 1) (= (select |#valid| 9) 1) (= 30 (select |#length| 25)) (= (select (select |#memory_int| 18) 5) 0) (= (select (select |#memory_int| 20) 0) 32) (= (select (select |#memory_int| 6) 0) 91) (= (select |#valid| 11) 1) (= (select |#length| 9) 10) (= (select |#valid| 27) 1) (= (select (select |#memory_int| 8) 0) 37) (= (select |#valid| 33) 1) (= 73 (select (select |#memory_int| 12) 1)) (= (select (select |#memory_int| 22) 1) 37) (<= ~currentFloorID~0 2147483647) (= (select (select |#memory_int| 23) 2) 105) (= (select (select |#memory_int| 10) 0) 117) (= ~calls_3~0 0) (= (select (select |#memory_int| 19) 2) 105) (= (select |#length| 15) 4) (= ~calls_0~0 0) (= 31 (select |#length| 2)) (= (select (select |#memory_int| 19) 1) 37) (= ~head~0.offset 0) (= 7 (select |#length| 12)) (= (select (select |#memory_int| 22) 2) 105) (= 2 (select |#length| 1)) (= (select (select |#memory_int| 16) 2) 105) (= (select (select |#memory_int| 17) 2) 105) (= (select |#length| 19) 4) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= ~floorButtons_4~0 0) (= (select (select |#memory_int| 18) 4) 58) (= (select |#length| 35) 9) (= (select |#valid| 18) 1) (= ~calls_1~0 0) (= 91 (select (select |#memory_int| 5) 0)) (= (select |#valid| 22) 1) (= 70 (select (select |#memory_int| 18) 1)) (= 5 (select |#length| 7)) (= (select |#valid| 24) 1) (= (select (select |#memory_int| 19) 3) 0) (= 32 (select (select |#memory_int| 7) 0)) (not (= ~landingButtons_spc1_0~0 0)) (= (select (select |#memory_int| 17) 3) 0) (= (select (select |#memory_int| 5) 1) 95) (= (select |#valid| 12) 1) (= (select |#valid| 32) 1) (= ~floorButtons_2~0 0) (= (select |#valid| 28) 1) (= (select |#length| 17) 4) (= (select (select |#memory_int| 13) 2) 105) (= 112 (select (select |#memory_int| 12) 4)) (= (select |#valid| 4) 1) (= (select (select |#memory_int| 16) 1) 37) (= (select |#length| 32) 9) (= (select (select |#memory_int| 20) 2) 105) (= 112 (select (select |#memory_int| 10) 1)) (= (select (select |#memory_int| 8) 2) 0) (= (select (select |#memory_int| 21) 2) 105) (= 0 (select (select |#memory_int| 7) 4)) (= (select |#length| 13) 4) (= 5 (select |#length| 11)) (= (select (select |#memory_int| 17) 1) 37) (= (select (select |#memory_int| 6) 1) 93) (= (select |#valid| 1) 1) (= (select |#valid| 20) 1) (= (select |#length| 36) 25) (= ~floorButtons_1~0 0) (= (select |#length| 24) 2) (= (select (select |#memory_int| 12) 6) 0) (= (select |#valid| 21) 1) (= (select (select |#memory_int| 11) 0) 100) (= (select (select |#memory_int| 24) 0) 10) (= ~floorButtons_0~0 0) (= 97 (select (select |#memory_int| 7) 1)) (= (select (select |#memory_int| 15) 1) 37) (= (select |#length| 33) 25) (= (select |#length| 5) 4) (= (select |#valid| 14) 1) (= 21 (select |#length| 30)) (= 112 (select (select |#memory_int| 18) 3)) (= (select |#length| 27) 21) (= 119 (select (select |#memory_int| 11) 2)) (= (select |#valid| 0) 0) (= (select (select |#memory_int| 12) 5) 58) (= (select (select |#memory_int| 16) 0) 32) (= (select |#valid| 25) 1) (= ~head~0.base 0) (= (select (select |#memory_int| 14) 3) 0) (= (select (select |#memory_int| 23) 3) 0) (= 95 (select (select |#memory_int| 12) 3)) (= 105 (select (select |#memory_int| 14) 2)) (= (select |#valid| 2) 1) (= (select (select |#memory_int| 14) 1) 37) (= |#NULL.offset| 0) (= (select |#valid| 36) 1) (= (select (select |#memory_int| 10) 2) 0) (= (select (select |#memory_int| 1) 0) 48) (= (select (select |#memory_int| 11) 1) 111) (= (select |#valid| 23) 1) (= 9 (select |#length| 29)) (= 32 (select (select |#memory_int| 7) 3)) (= 4 (select |#length| 23)) (= (select (select |#memory_int| 24) 1) 0) (= (select |#length| 20) 4) (= (select (select |#memory_int| 21) 3) 0) (<= 0 ~currentHeading~0) (= 76 (select (select |#memory_int| 12) 2)) (= (select |#valid| 19) 1) (= (select (select |#memory_int| 15) 0) 32) (= 32 (select (select |#memory_int| 13) 0)) (= (select |#valid| 31) 1) (= (select |#valid| 34) 1) (= (select (select |#memory_int| 6) 3) 0) (= (select |#valid| 16) 1) (= (select (select |#memory_int| 15) 2) 105) (= 32 (select (select |#memory_int| 17) 0)) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 15) 3) 0) (= (select (select |#memory_int| 1) 1) 0) (= 30 (select |#length| 28)) (= (select (select |#memory_int| 5) 2) 93) (= (select (select |#memory_int| 14) 0) 32) (= ~calls_2~0 0) (= ~calls_4~0 0) (= 30 (select |#length| 31)) (= (select |#valid| 29) 1) (= ~maximumWeight~0 100) (= (select (select |#memory_int| 6) 2) 32) (= 32 (select (select |#memory_int| 12) 0)) (= (select |#valid| 17) 1) (= (select (select |#memory_int| 16) 3) 0) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= (select (select |#memory_int| 11) 4) 0) (= 32 (select (select |#memory_int| 19) 0)) (= (select (select |#memory_int| 18) 2) 95) (= 4 (select |#length| 14)) (= (select |#valid| 13) 1) (< 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 12) (= (select |#length| 22) 4) (= 9 (select |#length| 26)) (= |#NULL.base| 0) (= 32 (select (select |#memory_int| 18) 0)) (= (select (select |#memory_int| 8) 1) 105) (= (select (select |#memory_int| 11) 3) 110) (= 32 (select (select |#memory_int| 21) 0)))' at error location [2022-11-25 23:41:57,153 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:41:57,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:41:57,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 12] total 34 [2022-11-25 23:41:57,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800934205] [2022-11-25 23:41:57,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:41:57,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-25 23:41:57,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:41:57,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-25 23:41:57,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1154, Invalid=12888, Unknown=0, NotChecked=0, Total=14042 [2022-11-25 23:41:57,161 INFO L87 Difference]: Start difference. First operand 753 states and 1197 transitions. Second operand has 34 states, 24 states have (on average 6.916666666666667) internal successors, (166), 28 states have internal predecessors, (166), 14 states have call successors, (56), 7 states have call predecessors, (56), 20 states have return successors, (58), 20 states have call predecessors, (58), 13 states have call successors, (58) [2022-11-25 23:42:22,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:42:22,165 INFO L93 Difference]: Finished difference Result 3926 states and 6333 transitions. [2022-11-25 23:42:22,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-11-25 23:42:22,166 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 24 states have (on average 6.916666666666667) internal successors, (166), 28 states have internal predecessors, (166), 14 states have call successors, (56), 7 states have call predecessors, (56), 20 states have return successors, (58), 20 states have call predecessors, (58), 13 states have call successors, (58) Word has length 128 [2022-11-25 23:42:22,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:42:22,192 INFO L225 Difference]: With dead ends: 3926 [2022-11-25 23:42:22,192 INFO L226 Difference]: Without dead ends: 3202 [2022-11-25 23:42:22,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 300 SyntacticMatches, 4 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14151 ImplicationChecksByTransitivity, 306.9s TimeCoverageRelationStatistics Valid=2876, Invalid=34566, Unknown=0, NotChecked=0, Total=37442 [2022-11-25 23:42:22,208 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 7012 mSDsluCounter, 9278 mSDsCounter, 0 mSdLazyCounter, 24922 mSolverCounterSat, 4320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7060 SdHoareTripleChecker+Valid, 9918 SdHoareTripleChecker+Invalid, 29242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4320 IncrementalHoareTripleChecker+Valid, 24922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:42:22,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7060 Valid, 9918 Invalid, 29242 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4320 Valid, 24922 Invalid, 0 Unknown, 0 Unchecked, 17.5s Time] [2022-11-25 23:42:22,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3202 states. [2022-11-25 23:42:22,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3202 to 2668. [2022-11-25 23:42:22,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2668 states, 1876 states have (on average 1.5852878464818763) internal successors, (2974), 1989 states have internal predecessors, (2974), 628 states have call successors, (628), 149 states have call predecessors, (628), 163 states have return successors, (673), 604 states have call predecessors, (673), 623 states have call successors, (673) [2022-11-25 23:42:22,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2668 states to 2668 states and 4275 transitions. [2022-11-25 23:42:22,487 INFO L78 Accepts]: Start accepts. Automaton has 2668 states and 4275 transitions. Word has length 128 [2022-11-25 23:42:22,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:42:22,488 INFO L495 AbstractCegarLoop]: Abstraction has 2668 states and 4275 transitions. [2022-11-25 23:42:22,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 24 states have (on average 6.916666666666667) internal successors, (166), 28 states have internal predecessors, (166), 14 states have call successors, (56), 7 states have call predecessors, (56), 20 states have return successors, (58), 20 states have call predecessors, (58), 13 states have call successors, (58) [2022-11-25 23:42:22,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2668 states and 4275 transitions. [2022-11-25 23:42:22,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-25 23:42:22,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:42:22,503 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:42:22,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-25 23:42:22,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 23:42:22,712 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:42:22,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:42:22,712 INFO L85 PathProgramCache]: Analyzing trace with hash 2035475755, now seen corresponding path program 1 times [2022-11-25 23:42:22,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:42:22,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774142498] [2022-11-25 23:42:22,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:22,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:42:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:23,142 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-25 23:42:23,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:42:23,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774142498] [2022-11-25 23:42:23,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774142498] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:42:23,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985873429] [2022-11-25 23:42:23,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:23,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:42:23,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:42:23,145 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:42:23,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:42:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:23,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 2241 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 23:42:23,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:42:23,933 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-25 23:42:23,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:42:24,331 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-25 23:42:24,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985873429] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:42:24,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [443083253] [2022-11-25 23:42:24,335 INFO L159 IcfgInterpreter]: Started Sifa with 92 locations of interest [2022-11-25 23:42:24,335 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:42:24,336 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:42:24,336 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:42:24,336 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:42:31,510 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 412 for LOIs [2022-11-25 23:42:31,609 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 586 for LOIs [2022-11-25 23:42:47,659 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 695 for LOIs [2022-11-25 23:42:52,410 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 40 for LOIs [2022-11-25 23:42:52,517 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 27 for LOIs [2022-11-25 23:42:52,542 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 54 for LOIs [2022-11-25 23:42:52,555 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 53 for LOIs [2022-11-25 23:42:52,563 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 593 for LOIs [2022-11-25 23:42:56,238 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 27 for LOIs [2022-11-25 23:42:56,240 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 50 for LOIs [2022-11-25 23:42:56,320 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 46 for LOIs [2022-11-25 23:42:56,328 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 556 for LOIs [2022-11-25 23:42:59,078 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 833 for LOIs [2022-11-25 23:43:05,360 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 660 for LOIs [2022-11-25 23:43:06,046 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:43:26,958 WARN L233 SmtUtils]: Spent 11.02s on a formula simplification. DAG size of input: 660 DAG size of output: 521 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:43:38,586 WARN L233 SmtUtils]: Spent 11.34s on a formula simplification. DAG size of input: 700 DAG size of output: 535 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:43:46,681 WARN L233 SmtUtils]: Spent 7.87s on a formula simplification. DAG size of input: 675 DAG size of output: 613 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:43:55,121 WARN L233 SmtUtils]: Spent 8.20s on a formula simplification. DAG size of input: 675 DAG size of output: 613 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:44:16,180 WARN L233 SmtUtils]: Spent 20.70s on a formula simplification. DAG size of input: 833 DAG size of output: 684 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:44:25,461 WARN L233 SmtUtils]: Spent 8.89s on a formula simplification that was a NOOP. DAG size: 836 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:45:01,888 WARN L233 SmtUtils]: Spent 9.42s on a formula simplification. DAG size of input: 695 DAG size of output: 608 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:45:35,973 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22336#(and (= 30 (select |#length| 34)) (= (select (select |#memory_int| 23) 0) 32) (= 6 (select |#length| 18)) (= 116 (select (select |#memory_int| 7) 2)) (= (select |#valid| 30) 1) (= (select (select |#memory_int| 20) 1) 37) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select |#valid| 15) 1) (= ~executiveFloor~0 4) (= (select |#length| 21) 4) (= (select (select |#memory_int| 21) 1) 37) (<= 0 (+ ~currentFloorID~0 2147483648)) (= (select (select |#memory_int| 23) 1) 37) (= (select (select |#memory_int| 20) 3) 0) (= (select (select |#memory_int| 22) 3) 0) (= (select (select |#memory_int| 5) 3) 0) (= 4 (select |#length| 16)) (= 3 (select |#length| 10)) (= (select (select |#memory_int| 22) 0) 32) (= (select (select |#memory_int| 13) 3) 0) (= (select |#valid| 26) 1) (= (select |#length| 4) 10) (= (select |#length| 8) 3) (= (select |#length| 6) 4) (= (select (select |#memory_int| 13) 1) 37) (= (select |#valid| 35) 1) (= (select |#valid| 9) 1) (= 30 (select |#length| 25)) (= (select (select |#memory_int| 18) 5) 0) (= (select (select |#memory_int| 20) 0) 32) (= (select (select |#memory_int| 6) 0) 91) (= (select |#valid| 11) 1) (= (select |#length| 9) 10) (= (select |#valid| 27) 1) (= (select (select |#memory_int| 8) 0) 37) (= (select |#valid| 33) 1) (= 73 (select (select |#memory_int| 12) 1)) (= (select (select |#memory_int| 22) 1) 37) (<= ~currentFloorID~0 2147483647) (= (select (select |#memory_int| 23) 2) 105) (= (select (select |#memory_int| 10) 0) 117) (= (select (select |#memory_int| 19) 2) 105) (= (select |#length| 15) 4) (= 31 (select |#length| 2)) (= (select (select |#memory_int| 19) 1) 37) (= ~head~0.offset 0) (= 7 (select |#length| 12)) (= (select (select |#memory_int| 22) 2) 105) (= 2 (select |#length| 1)) (= (select (select |#memory_int| 16) 2) 105) (= (select (select |#memory_int| 17) 2) 105) (= (select |#length| 19) 4) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= (select (select |#memory_int| 18) 4) 58) (= (select |#length| 35) 9) (= (select |#valid| 18) 1) (= 91 (select (select |#memory_int| 5) 0)) (= (select |#valid| 22) 1) (= 70 (select (select |#memory_int| 18) 1)) (= 5 (select |#length| 7)) (= (select |#valid| 24) 1) (= (select (select |#memory_int| 19) 3) 0) (= 32 (select (select |#memory_int| 7) 0)) (not (= ~landingButtons_spc1_0~0 0)) (= (select (select |#memory_int| 17) 3) 0) (= (select (select |#memory_int| 5) 1) 95) (= (select |#valid| 12) 1) (= (select |#valid| 32) 1) (= (select |#valid| 28) 1) (= (select |#length| 17) 4) (= (select (select |#memory_int| 13) 2) 105) (= 112 (select (select |#memory_int| 12) 4)) (= (select |#valid| 4) 1) (= (select (select |#memory_int| 16) 1) 37) (= (select |#length| 32) 9) (= (select (select |#memory_int| 20) 2) 105) (= 112 (select (select |#memory_int| 10) 1)) (= (select (select |#memory_int| 8) 2) 0) (= (select (select |#memory_int| 21) 2) 105) (= 0 (select (select |#memory_int| 7) 4)) (= (select |#length| 13) 4) (= 5 (select |#length| 11)) (= (select (select |#memory_int| 17) 1) 37) (= (select (select |#memory_int| 6) 1) 93) (= (select |#valid| 1) 1) (= (select |#valid| 20) 1) (= (select |#length| 36) 25) (= (select |#length| 24) 2) (= (select (select |#memory_int| 12) 6) 0) (= (select |#valid| 21) 1) (= (select (select |#memory_int| 11) 0) 100) (= (select (select |#memory_int| 24) 0) 10) (= 97 (select (select |#memory_int| 7) 1)) (= (select (select |#memory_int| 15) 1) 37) (= (select |#length| 33) 25) (= (select |#length| 5) 4) (= (select |#valid| 14) 1) (= 21 (select |#length| 30)) (= 112 (select (select |#memory_int| 18) 3)) (= (select |#length| 27) 21) (= 119 (select (select |#memory_int| 11) 2)) (= (select |#valid| 0) 0) (= (select (select |#memory_int| 12) 5) 58) (= (select (select |#memory_int| 16) 0) 32) (= (select |#valid| 25) 1) (= ~head~0.base 0) (= (select (select |#memory_int| 14) 3) 0) (= (select (select |#memory_int| 23) 3) 0) (= 95 (select (select |#memory_int| 12) 3)) (= 105 (select (select |#memory_int| 14) 2)) (= (select |#valid| 2) 1) (= (select (select |#memory_int| 14) 1) 37) (= |#NULL.offset| 0) (= (select |#valid| 36) 1) (= (select (select |#memory_int| 10) 2) 0) (= (select (select |#memory_int| 1) 0) 48) (= (select (select |#memory_int| 11) 1) 111) (= (select |#valid| 23) 1) (= 9 (select |#length| 29)) (= 32 (select (select |#memory_int| 7) 3)) (= 4 (select |#length| 23)) (= (select (select |#memory_int| 24) 1) 0) (= (select |#length| 20) 4) (= (select (select |#memory_int| 21) 3) 0) (= 76 (select (select |#memory_int| 12) 2)) (= (select |#valid| 19) 1) (= (select (select |#memory_int| 15) 0) 32) (= 32 (select (select |#memory_int| 13) 0)) (= (select |#valid| 31) 1) (= (select |#valid| 34) 1) (= (select (select |#memory_int| 6) 3) 0) (= (select |#valid| 16) 1) (= (select (select |#memory_int| 15) 2) 105) (= 32 (select (select |#memory_int| 17) 0)) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 15) 3) 0) (= (select (select |#memory_int| 1) 1) 0) (= 30 (select |#length| 28)) (= (select (select |#memory_int| 5) 2) 93) (= (select (select |#memory_int| 14) 0) 32) (= 30 (select |#length| 31)) (= (select |#valid| 29) 1) (= ~maximumWeight~0 100) (= (select (select |#memory_int| 6) 2) 32) (= 32 (select (select |#memory_int| 12) 0)) (= (select |#valid| 17) 1) (= (select (select |#memory_int| 16) 3) 0) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= (select (select |#memory_int| 11) 4) 0) (= 32 (select (select |#memory_int| 19) 0)) (= (select (select |#memory_int| 18) 2) 95) (= 4 (select |#length| 14)) (= (select |#valid| 13) 1) (< 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 12) (= (select |#length| 22) 4) (= 9 (select |#length| 26)) (= |#NULL.base| 0) (= 32 (select (select |#memory_int| 18) 0)) (= (select (select |#memory_int| 8) 1) 105) (= (select (select |#memory_int| 11) 3) 110) (= 32 (select (select |#memory_int| 21) 0)))' at error location [2022-11-25 23:45:35,974 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:45:35,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:45:35,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 7] total 16 [2022-11-25 23:45:35,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874774798] [2022-11-25 23:45:35,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:45:35,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 23:45:35,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:45:35,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 23:45:35,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=771, Invalid=7239, Unknown=0, NotChecked=0, Total=8010 [2022-11-25 23:45:35,980 INFO L87 Difference]: Start difference. First operand 2668 states and 4275 transitions. Second operand has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 8 states have call successors, (47), 3 states have call predecessors, (47), 5 states have return successors, (46), 8 states have call predecessors, (46), 7 states have call successors, (46) [2022-11-25 23:45:38,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:45:38,509 INFO L93 Difference]: Finished difference Result 3353 states and 5418 transitions. [2022-11-25 23:45:38,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 23:45:38,510 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 8 states have call successors, (47), 3 states have call predecessors, (47), 5 states have return successors, (46), 8 states have call predecessors, (46), 7 states have call successors, (46) Word has length 162 [2022-11-25 23:45:38,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:45:38,541 INFO L225 Difference]: With dead ends: 3353 [2022-11-25 23:45:38,542 INFO L226 Difference]: Without dead ends: 3334 [2022-11-25 23:45:38,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 398 SyntacticMatches, 5 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3291 ImplicationChecksByTransitivity, 150.8s TimeCoverageRelationStatistics Valid=872, Invalid=8440, Unknown=0, NotChecked=0, Total=9312 [2022-11-25 23:45:38,549 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 1583 mSDsluCounter, 3249 mSDsCounter, 0 mSdLazyCounter, 1649 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 3797 SdHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 1649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:45:38,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1587 Valid, 3797 Invalid, 2022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 1649 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-25 23:45:38,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2022-11-25 23:45:38,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 3150. [2022-11-25 23:45:38,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3150 states, 2242 states have (on average 1.5428189116859947) internal successors, (3459), 2353 states have internal predecessors, (3459), 744 states have call successors, (744), 149 states have call predecessors, (744), 163 states have return successors, (866), 722 states have call predecessors, (866), 739 states have call successors, (866) [2022-11-25 23:45:38,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3150 states to 3150 states and 5069 transitions. [2022-11-25 23:45:38,888 INFO L78 Accepts]: Start accepts. Automaton has 3150 states and 5069 transitions. Word has length 162 [2022-11-25 23:45:38,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:45:38,889 INFO L495 AbstractCegarLoop]: Abstraction has 3150 states and 5069 transitions. [2022-11-25 23:45:38,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 8 states have call successors, (47), 3 states have call predecessors, (47), 5 states have return successors, (46), 8 states have call predecessors, (46), 7 states have call successors, (46) [2022-11-25 23:45:38,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3150 states and 5069 transitions. [2022-11-25 23:45:38,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-25 23:45:38,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:45:38,900 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:45:38,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:45:39,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:45:39,108 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:45:39,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:45:39,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1563436116, now seen corresponding path program 1 times [2022-11-25 23:45:39,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:45:39,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116325098] [2022-11-25 23:45:39,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:39,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:45:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:39,377 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-11-25 23:45:39,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:45:39,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116325098] [2022-11-25 23:45:39,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116325098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:45:39,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:45:39,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:45:39,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401667663] [2022-11-25 23:45:39,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:45:39,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:45:39,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:45:39,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:45:39,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:45:39,382 INFO L87 Difference]: Start difference. First operand 3150 states and 5069 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-25 23:45:39,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:45:39,821 INFO L93 Difference]: Finished difference Result 5662 states and 9311 transitions. [2022-11-25 23:45:39,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:45:39,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 159 [2022-11-25 23:45:39,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:45:39,856 INFO L225 Difference]: With dead ends: 5662 [2022-11-25 23:45:39,857 INFO L226 Difference]: Without dead ends: 3518 [2022-11-25 23:45:39,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:45:39,876 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 98 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:45:39,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1743 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:45:39,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3518 states. [2022-11-25 23:45:40,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3518 to 3166. [2022-11-25 23:45:40,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3166 states, 2258 states have (on average 1.5389725420726306) internal successors, (3475), 2369 states have internal predecessors, (3475), 744 states have call successors, (744), 149 states have call predecessors, (744), 163 states have return successors, (866), 722 states have call predecessors, (866), 739 states have call successors, (866) [2022-11-25 23:45:40,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3166 states to 3166 states and 5085 transitions. [2022-11-25 23:45:40,266 INFO L78 Accepts]: Start accepts. Automaton has 3166 states and 5085 transitions. Word has length 159 [2022-11-25 23:45:40,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:45:40,266 INFO L495 AbstractCegarLoop]: Abstraction has 3166 states and 5085 transitions. [2022-11-25 23:45:40,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-25 23:45:40,267 INFO L276 IsEmpty]: Start isEmpty. Operand 3166 states and 5085 transitions. [2022-11-25 23:45:40,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-25 23:45:40,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:45:40,279 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:45:40,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 23:45:40,279 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:45:40,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:45:40,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1409388186, now seen corresponding path program 1 times [2022-11-25 23:45:40,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:45:40,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142803979] [2022-11-25 23:45:40,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:40,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:45:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:40,473 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-11-25 23:45:40,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:45:40,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142803979] [2022-11-25 23:45:40,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142803979] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:45:40,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211740528] [2022-11-25 23:45:40,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:40,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:45:40,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:45:40,475 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:45:40,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:45:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:40,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 2030 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:45:40,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:45:40,944 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-25 23:45:40,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:45:40,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211740528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:45:40,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:45:40,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-25 23:45:40,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45863977] [2022-11-25 23:45:40,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:45:40,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:45:40,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:45:40,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:45:40,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:45:40,948 INFO L87 Difference]: Start difference. First operand 3166 states and 5085 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-25 23:45:41,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:45:41,527 INFO L93 Difference]: Finished difference Result 5384 states and 8842 transitions. [2022-11-25 23:45:41,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:45:41,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 162 [2022-11-25 23:45:41,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:45:41,558 INFO L225 Difference]: With dead ends: 5384 [2022-11-25 23:45:41,558 INFO L226 Difference]: Without dead ends: 3400 [2022-11-25 23:45:41,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:45:41,579 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 213 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:45:41,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1446 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 23:45:41,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3400 states. [2022-11-25 23:45:41,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3400 to 3400. [2022-11-25 23:45:41,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3400 states, 2486 states have (on average 1.574014481094127) internal successors, (3913), 2597 states have internal predecessors, (3913), 744 states have call successors, (744), 155 states have call predecessors, (744), 169 states have return successors, (866), 722 states have call predecessors, (866), 739 states have call successors, (866) [2022-11-25 23:45:41,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3400 states to 3400 states and 5523 transitions. [2022-11-25 23:45:41,942 INFO L78 Accepts]: Start accepts. Automaton has 3400 states and 5523 transitions. Word has length 162 [2022-11-25 23:45:41,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:45:41,946 INFO L495 AbstractCegarLoop]: Abstraction has 3400 states and 5523 transitions. [2022-11-25 23:45:41,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-25 23:45:41,947 INFO L276 IsEmpty]: Start isEmpty. Operand 3400 states and 5523 transitions. [2022-11-25 23:45:41,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-25 23:45:41,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:45:41,959 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:45:41,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 23:45:42,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:45:42,168 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:45:42,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:45:42,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1104769933, now seen corresponding path program 1 times [2022-11-25 23:45:42,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:45:42,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266264124] [2022-11-25 23:45:42,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:42,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:45:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:42,372 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-11-25 23:45:42,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:45:42,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266264124] [2022-11-25 23:45:42,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266264124] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:45:42,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160807820] [2022-11-25 23:45:42,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:42,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:45:42,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:45:42,374 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:45:42,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 23:45:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:42,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 2035 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:45:42,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:45:42,870 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-25 23:45:42,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:45:42,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160807820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:45:42,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:45:42,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-25 23:45:42,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953438397] [2022-11-25 23:45:42,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:45:42,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:45:42,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:45:42,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:45:42,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:45:42,876 INFO L87 Difference]: Start difference. First operand 3400 states and 5523 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-25 23:45:43,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:45:43,417 INFO L93 Difference]: Finished difference Result 5763 states and 9541 transitions. [2022-11-25 23:45:43,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:45:43,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 167 [2022-11-25 23:45:43,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:45:43,442 INFO L225 Difference]: With dead ends: 5763 [2022-11-25 23:45:43,442 INFO L226 Difference]: Without dead ends: 3634 [2022-11-25 23:45:43,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:45:43,456 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 211 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:45:43,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1446 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 23:45:43,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3634 states. [2022-11-25 23:45:43,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3634 to 3634. [2022-11-25 23:45:43,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 2714 states have (on average 1.603168754605748) internal successors, (4351), 2825 states have internal predecessors, (4351), 744 states have call successors, (744), 161 states have call predecessors, (744), 175 states have return successors, (866), 722 states have call predecessors, (866), 739 states have call successors, (866) [2022-11-25 23:45:43,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 5961 transitions. [2022-11-25 23:45:43,760 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 5961 transitions. Word has length 167 [2022-11-25 23:45:43,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:45:43,761 INFO L495 AbstractCegarLoop]: Abstraction has 3634 states and 5961 transitions. [2022-11-25 23:45:43,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-25 23:45:43,761 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 5961 transitions. [2022-11-25 23:45:43,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-25 23:45:43,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:45:43,772 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:45:43,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 23:45:43,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 23:45:43,981 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:45:43,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:45:43,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1818793469, now seen corresponding path program 1 times [2022-11-25 23:45:43,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:45:43,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860665008] [2022-11-25 23:45:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:43,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:45:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:44,158 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-25 23:45:44,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:45:44,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860665008] [2022-11-25 23:45:44,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860665008] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:45:44,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735603748] [2022-11-25 23:45:44,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:44,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:45:44,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:45:44,161 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:45:44,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 23:45:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:44,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 2039 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:45:44,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:45:44,640 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-25 23:45:44,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:45:44,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735603748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:45:44,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:45:44,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-25 23:45:44,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141119733] [2022-11-25 23:45:44,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:45:44,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:45:44,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:45:44,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:45:44,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:45:44,645 INFO L87 Difference]: Start difference. First operand 3634 states and 5961 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-25 23:45:45,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:45:45,136 INFO L93 Difference]: Finished difference Result 6142 states and 10240 transitions. [2022-11-25 23:45:45,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:45:45,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 171 [2022-11-25 23:45:45,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:45:45,174 INFO L225 Difference]: With dead ends: 6142 [2022-11-25 23:45:45,174 INFO L226 Difference]: Without dead ends: 3868 [2022-11-25 23:45:45,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:45:45,189 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 209 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:45:45,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1446 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:45:45,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2022-11-25 23:45:45,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 3868. [2022-11-25 23:45:45,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3868 states, 2942 states have (on average 1.6278042148198504) internal successors, (4789), 3053 states have internal predecessors, (4789), 744 states have call successors, (744), 167 states have call predecessors, (744), 181 states have return successors, (866), 722 states have call predecessors, (866), 739 states have call successors, (866) [2022-11-25 23:45:45,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3868 states to 3868 states and 6399 transitions. [2022-11-25 23:45:45,491 INFO L78 Accepts]: Start accepts. Automaton has 3868 states and 6399 transitions. Word has length 171 [2022-11-25 23:45:45,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:45:45,492 INFO L495 AbstractCegarLoop]: Abstraction has 3868 states and 6399 transitions. [2022-11-25 23:45:45,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-25 23:45:45,492 INFO L276 IsEmpty]: Start isEmpty. Operand 3868 states and 6399 transitions. [2022-11-25 23:45:45,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-25 23:45:45,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:45:45,503 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:45:45,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 23:45:45,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 23:45:45,712 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:45:45,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:45:45,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1844660666, now seen corresponding path program 1 times [2022-11-25 23:45:45,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:45:45,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822257063] [2022-11-25 23:45:45,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:45,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:45:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:45,962 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-11-25 23:45:45,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:45:45,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822257063] [2022-11-25 23:45:45,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822257063] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:45:45,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874790527] [2022-11-25 23:45:45,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:45,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:45:45,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:45:45,964 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:45:45,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 23:45:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:46,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 2042 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:45:46,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:45:46,452 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 23:45:46,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:45:46,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874790527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:45:46,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:45:46,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-25 23:45:46,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231318822] [2022-11-25 23:45:46,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:45:46,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:45:46,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:45:46,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:45:46,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:45:46,455 INFO L87 Difference]: Start difference. First operand 3868 states and 6399 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-25 23:45:46,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:45:46,970 INFO L93 Difference]: Finished difference Result 6521 states and 10939 transitions. [2022-11-25 23:45:46,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:45:46,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 174 [2022-11-25 23:45:46,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:45:46,995 INFO L225 Difference]: With dead ends: 6521 [2022-11-25 23:45:46,995 INFO L226 Difference]: Without dead ends: 4102 [2022-11-25 23:45:47,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:45:47,009 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 207 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:45:47,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1446 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 23:45:47,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2022-11-25 23:45:47,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 4102. [2022-11-25 23:45:47,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4102 states, 3170 states have (on average 1.6488958990536278) internal successors, (5227), 3281 states have internal predecessors, (5227), 744 states have call successors, (744), 173 states have call predecessors, (744), 187 states have return successors, (866), 722 states have call predecessors, (866), 739 states have call successors, (866) [2022-11-25 23:45:47,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4102 states to 4102 states and 6837 transitions. [2022-11-25 23:45:47,316 INFO L78 Accepts]: Start accepts. Automaton has 4102 states and 6837 transitions. Word has length 174 [2022-11-25 23:45:47,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:45:47,317 INFO L495 AbstractCegarLoop]: Abstraction has 4102 states and 6837 transitions. [2022-11-25 23:45:47,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-25 23:45:47,317 INFO L276 IsEmpty]: Start isEmpty. Operand 4102 states and 6837 transitions. [2022-11-25 23:45:47,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-25 23:45:47,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:45:47,328 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:45:47,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-25 23:45:47,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:45:47,536 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:45:47,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:45:47,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1938876406, now seen corresponding path program 1 times [2022-11-25 23:45:47,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:45:47,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545432186] [2022-11-25 23:45:47,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:47,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:45:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:47,740 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-11-25 23:45:47,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:45:47,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545432186] [2022-11-25 23:45:47,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545432186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:45:47,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:45:47,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:45:47,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491379524] [2022-11-25 23:45:47,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:45:47,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:45:47,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:45:47,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:45:47,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:45:47,744 INFO L87 Difference]: Start difference. First operand 4102 states and 6837 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-25 23:45:48,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:45:48,191 INFO L93 Difference]: Finished difference Result 7212 states and 12193 transitions. [2022-11-25 23:45:48,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:45:48,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 176 [2022-11-25 23:45:48,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:45:48,216 INFO L225 Difference]: With dead ends: 7212 [2022-11-25 23:45:48,216 INFO L226 Difference]: Without dead ends: 4306 [2022-11-25 23:45:48,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:45:48,233 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 99 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:45:48,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 1459 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:45:48,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4306 states. [2022-11-25 23:45:48,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4306 to 4306. [2022-11-25 23:45:48,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4306 states, 3368 states have (on average 1.5840261282660333) internal successors, (5335), 3479 states have internal predecessors, (5335), 744 states have call successors, (744), 179 states have call predecessors, (744), 193 states have return successors, (866), 722 states have call predecessors, (866), 739 states have call successors, (866) [2022-11-25 23:45:48,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4306 states to 4306 states and 6945 transitions. [2022-11-25 23:45:48,609 INFO L78 Accepts]: Start accepts. Automaton has 4306 states and 6945 transitions. Word has length 176 [2022-11-25 23:45:48,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:45:48,610 INFO L495 AbstractCegarLoop]: Abstraction has 4306 states and 6945 transitions. [2022-11-25 23:45:48,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-25 23:45:48,611 INFO L276 IsEmpty]: Start isEmpty. Operand 4306 states and 6945 transitions. [2022-11-25 23:45:48,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-25 23:45:48,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:45:48,622 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:45:48,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 23:45:48,622 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:45:48,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:45:48,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1000876549, now seen corresponding path program 1 times [2022-11-25 23:45:48,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:45:48,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863348672] [2022-11-25 23:45:48,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:48,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:45:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:49,058 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-11-25 23:45:49,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:45:49,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863348672] [2022-11-25 23:45:49,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863348672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:45:49,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:45:49,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 23:45:49,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150538408] [2022-11-25 23:45:49,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:45:49,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:45:49,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:45:49,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:45:49,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:45:49,061 INFO L87 Difference]: Start difference. First operand 4306 states and 6945 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 6 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) [2022-11-25 23:45:52,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:45:52,241 INFO L93 Difference]: Finished difference Result 10555 states and 17143 transitions. [2022-11-25 23:45:52,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 23:45:52,242 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 6 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) Word has length 176 [2022-11-25 23:45:52,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:45:52,278 INFO L225 Difference]: With dead ends: 10555 [2022-11-25 23:45:52,278 INFO L226 Difference]: Without dead ends: 5962 [2022-11-25 23:45:52,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-11-25 23:45:52,299 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 1713 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 3628 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 4403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 3628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:45:52,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1750 Valid, 1597 Invalid, 4403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 3628 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-25 23:45:52,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5962 states. [2022-11-25 23:45:52,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5962 to 5618. [2022-11-25 23:45:52,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5618 states, 4294 states have (on average 1.5223567768979973) internal successors, (6537), 4467 states have internal predecessors, (6537), 991 states have call successors, (991), 296 states have call predecessors, (991), 332 states have return successors, (1183), 946 states have call predecessors, (1183), 986 states have call successors, (1183) [2022-11-25 23:45:52,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5618 states to 5618 states and 8711 transitions. [2022-11-25 23:45:52,780 INFO L78 Accepts]: Start accepts. Automaton has 5618 states and 8711 transitions. Word has length 176 [2022-11-25 23:45:52,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:45:52,781 INFO L495 AbstractCegarLoop]: Abstraction has 5618 states and 8711 transitions. [2022-11-25 23:45:52,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 6 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) [2022-11-25 23:45:52,781 INFO L276 IsEmpty]: Start isEmpty. Operand 5618 states and 8711 transitions. [2022-11-25 23:45:52,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-25 23:45:52,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:45:52,796 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:45:52,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 23:45:52,796 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:45:52,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:45:52,797 INFO L85 PathProgramCache]: Analyzing trace with hash -771494637, now seen corresponding path program 1 times [2022-11-25 23:45:52,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:45:52,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639198908] [2022-11-25 23:45:52,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:52,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:45:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:53,204 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-25 23:45:53,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:45:53,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639198908] [2022-11-25 23:45:53,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639198908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:45:53,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:45:53,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 23:45:53,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563321348] [2022-11-25 23:45:53,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:45:53,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:45:53,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:45:53,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:45:53,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:45:53,207 INFO L87 Difference]: Start difference. First operand 5618 states and 8711 transitions. Second operand has 8 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 6 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-25 23:45:56,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:45:56,401 INFO L93 Difference]: Finished difference Result 10436 states and 16312 transitions. [2022-11-25 23:45:56,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 23:45:56,402 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 6 states have call predecessors, (26), 4 states have call successors, (26) Word has length 177 [2022-11-25 23:45:56,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:45:56,449 INFO L225 Difference]: With dead ends: 10436 [2022-11-25 23:45:56,449 INFO L226 Difference]: Without dead ends: 7395 [2022-11-25 23:45:56,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-11-25 23:45:56,465 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 1137 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 3882 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 4393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 3882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:45:56,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1206 Valid, 1268 Invalid, 4393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 3882 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-25 23:45:56,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7395 states. [2022-11-25 23:45:57,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7395 to 7117. [2022-11-25 23:45:57,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7117 states, 5481 states have (on average 1.5201605546433132) internal successors, (8332), 5704 states have internal predecessors, (8332), 1217 states have call successors, (1217), 366 states have call predecessors, (1217), 418 states have return successors, (1489), 1174 states have call predecessors, (1489), 1212 states have call successors, (1489) [2022-11-25 23:45:57,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7117 states to 7117 states and 11038 transitions. [2022-11-25 23:45:57,079 INFO L78 Accepts]: Start accepts. Automaton has 7117 states and 11038 transitions. Word has length 177 [2022-11-25 23:45:57,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:45:57,082 INFO L495 AbstractCegarLoop]: Abstraction has 7117 states and 11038 transitions. [2022-11-25 23:45:57,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 6 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-25 23:45:57,082 INFO L276 IsEmpty]: Start isEmpty. Operand 7117 states and 11038 transitions. [2022-11-25 23:45:57,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 23:45:57,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:45:57,103 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:45:57,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 23:45:57,103 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:45:57,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:45:57,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1702737953, now seen corresponding path program 1 times [2022-11-25 23:45:57,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:45:57,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232899786] [2022-11-25 23:45:57,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:57,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:45:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:59,291 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 17 proven. 35 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-25 23:45:59,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:45:59,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232899786] [2022-11-25 23:45:59,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232899786] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:45:59,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272298157] [2022-11-25 23:45:59,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:59,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:45:59,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:45:59,295 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:45:59,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afcbce2-0782-423a-a4c5-0e5ca96aca47/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 23:45:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:59,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 2050 conjuncts, 131 conjunts are in the unsatisfiable core [2022-11-25 23:45:59,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:46:02,859 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 84 proven. 14 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-25 23:46:02,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:46:53,858 WARN L233 SmtUtils]: Spent 49.98s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)