./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f89a8ce65f650dd979d04d2db9dc53ba483e2a2b64be3f70ae15b036e4b11b5a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 03:07:23,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 03:07:23,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 03:07:23,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 03:07:23,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 03:07:23,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 03:07:23,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 03:07:23,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 03:07:23,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 03:07:23,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 03:07:23,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 03:07:23,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 03:07:23,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 03:07:23,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 03:07:23,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 03:07:23,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 03:07:23,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 03:07:23,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 03:07:23,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 03:07:23,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 03:07:23,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 03:07:23,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 03:07:23,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 03:07:23,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 03:07:23,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 03:07:23,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 03:07:23,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 03:07:23,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 03:07:23,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 03:07:23,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 03:07:23,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 03:07:23,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 03:07:23,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 03:07:23,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 03:07:23,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 03:07:23,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 03:07:23,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 03:07:23,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 03:07:23,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 03:07:23,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 03:07:23,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 03:07:23,700 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 03:07:23,732 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 03:07:23,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 03:07:23,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 03:07:23,733 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 03:07:23,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 03:07:23,734 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 03:07:23,734 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 03:07:23,734 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 03:07:23,734 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 03:07:23,734 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 03:07:23,735 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 03:07:23,735 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 03:07:23,735 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 03:07:23,735 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 03:07:23,735 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 03:07:23,735 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 03:07:23,736 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 03:07:23,736 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 03:07:23,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 03:07:23,736 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 03:07:23,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 03:07:23,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 03:07:23,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 03:07:23,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 03:07:23,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 03:07:23,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 03:07:23,738 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 03:07:23,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 03:07:23,738 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 03:07:23,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 03:07:23,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 03:07:23,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 03:07:23,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:07:23,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 03:07:23,739 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 03:07:23,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 03:07:23,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 03:07:23,739 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 03:07:23,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 03:07:23,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 03:07:23,740 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 03:07:23,740 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_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f89a8ce65f650dd979d04d2db9dc53ba483e2a2b64be3f70ae15b036e4b11b5a [2022-12-14 03:07:23,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 03:07:23,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 03:07:23,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 03:07:23,932 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 03:07:23,932 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 03:07:23,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c [2022-12-14 03:07:26,543 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 03:07:26,781 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 03:07:26,782 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c [2022-12-14 03:07:26,797 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/data/86a951ff3/c40f841d4b2d4b30b7581f9aae79b378/FLAG309f692ee [2022-12-14 03:07:26,810 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/data/86a951ff3/c40f841d4b2d4b30b7581f9aae79b378 [2022-12-14 03:07:26,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 03:07:26,814 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 03:07:26,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 03:07:26,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 03:07:26,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 03:07:26,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:07:26" (1/1) ... [2022-12-14 03:07:26,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bbd9263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:26, skipping insertion in model container [2022-12-14 03:07:26,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:07:26" (1/1) ... [2022-12-14 03:07:26,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 03:07:26,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 03:07:27,033 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_44e27c84-e0f1-4f69-a31b-792c3a307787/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c[1811,1824] [2022-12-14 03:07:27,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:07:27,293 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 03:07:27,305 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_44e27c84-e0f1-4f69-a31b-792c3a307787/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c[1811,1824] [2022-12-14 03:07:27,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:07:27,403 INFO L208 MainTranslator]: Completed translation [2022-12-14 03:07:27,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:27 WrapperNode [2022-12-14 03:07:27,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 03:07:27,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 03:07:27,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 03:07:27,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 03:07:27,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:27" (1/1) ... [2022-12-14 03:07:27,440 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:27" (1/1) ... [2022-12-14 03:07:27,485 INFO L138 Inliner]: procedures = 92, calls = 344, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 839 [2022-12-14 03:07:27,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 03:07:27,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 03:07:27,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 03:07:27,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 03:07:27,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:27" (1/1) ... [2022-12-14 03:07:27,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:27" (1/1) ... [2022-12-14 03:07:27,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:27" (1/1) ... [2022-12-14 03:07:27,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:27" (1/1) ... [2022-12-14 03:07:27,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:27" (1/1) ... [2022-12-14 03:07:27,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:27" (1/1) ... [2022-12-14 03:07:27,534 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:27" (1/1) ... [2022-12-14 03:07:27,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:27" (1/1) ... [2022-12-14 03:07:27,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 03:07:27,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 03:07:27,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 03:07:27,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 03:07:27,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:27" (1/1) ... [2022-12-14 03:07:27,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:07:27,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:07:27,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 03:07:27,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 03:07:27,613 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-12-14 03:07:27,613 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-12-14 03:07:27,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 03:07:27,613 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-12-14 03:07:27,613 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-12-14 03:07:27,613 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-12-14 03:07:27,614 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-12-14 03:07:27,614 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2022-12-14 03:07:27,614 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2022-12-14 03:07:27,614 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-12-14 03:07:27,614 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-12-14 03:07:27,614 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-12-14 03:07:27,614 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-12-14 03:07:27,615 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-12-14 03:07:27,615 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-12-14 03:07:27,615 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-12-14 03:07:27,615 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-12-14 03:07:27,615 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-14 03:07:27,615 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-14 03:07:27,615 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-14 03:07:27,616 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-14 03:07:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-14 03:07:27,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-14 03:07:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-12-14 03:07:27,616 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-12-14 03:07:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-12-14 03:07:27,616 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-12-14 03:07:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-12-14 03:07:27,617 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-12-14 03:07:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-12-14 03:07:27,617 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-12-14 03:07:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-12-14 03:07:27,617 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-12-14 03:07:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-12-14 03:07:27,617 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-12-14 03:07:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-12-14 03:07:27,618 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-12-14 03:07:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-12-14 03:07:27,618 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-12-14 03:07:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 03:07:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-12-14 03:07:27,618 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-12-14 03:07:27,619 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-12-14 03:07:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-12-14 03:07:27,619 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-12-14 03:07:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-12-14 03:07:27,619 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-12-14 03:07:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-12-14 03:07:27,619 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-12-14 03:07:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-12-14 03:07:27,620 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-12-14 03:07:27,620 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-12-14 03:07:27,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 03:07:27,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 03:07:27,620 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-12-14 03:07:27,620 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-12-14 03:07:27,744 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 03:07:27,746 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 03:07:28,499 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 03:07:29,031 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 03:07:29,031 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 03:07:29,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:07:29 BoogieIcfgContainer [2022-12-14 03:07:29,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 03:07:29,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 03:07:29,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 03:07:29,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 03:07:29,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:07:26" (1/3) ... [2022-12-14 03:07:29,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c795c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:07:29, skipping insertion in model container [2022-12-14 03:07:29,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:27" (2/3) ... [2022-12-14 03:07:29,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c795c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:07:29, skipping insertion in model container [2022-12-14 03:07:29,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:07:29" (3/3) ... [2022-12-14 03:07:29,041 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product22.cil.c [2022-12-14 03:07:29,056 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 03:07:29,057 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 03:07:29,105 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 03:07:29,110 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;@7b1eda63, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 03:07:29,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 03:07:29,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 416 states, 286 states have (on average 1.597902097902098) internal successors, (457), 306 states have internal predecessors, (457), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2022-12-14 03:07:29,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 03:07:29,134 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:07:29,135 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:07:29,135 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:07:29,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:07:29,140 INFO L85 PathProgramCache]: Analyzing trace with hash -219457398, now seen corresponding path program 1 times [2022-12-14 03:07:29,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:07:29,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776049950] [2022-12-14 03:07:29,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:29,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:07:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:29,489 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 03:07:29,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:07:29,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776049950] [2022-12-14 03:07:29,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776049950] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:07:29,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553048668] [2022-12-14 03:07:29,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:29,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:07:29,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:07:29,492 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:07:29,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 03:07:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:29,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 1230 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 03:07:29,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:07:29,804 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 03:07:29,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:07:29,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553048668] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:07:29,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 03:07:29,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2022-12-14 03:07:29,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937997086] [2022-12-14 03:07:29,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:07:29,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 03:07:29,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:07:29,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 03:07:29,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 03:07:29,839 INFO L87 Difference]: Start difference. First operand has 416 states, 286 states have (on average 1.597902097902098) internal successors, (457), 306 states have internal predecessors, (457), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-14 03:07:30,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:07:30,017 INFO L93 Difference]: Finished difference Result 816 states and 1311 transitions. [2022-12-14 03:07:30,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 03:07:30,019 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 58 [2022-12-14 03:07:30,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:07:30,030 INFO L225 Difference]: With dead ends: 816 [2022-12-14 03:07:30,030 INFO L226 Difference]: Without dead ends: 410 [2022-12-14 03:07:30,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 03:07:30,038 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:07:30,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 616 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:07:30,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-12-14 03:07:30,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2022-12-14 03:07:30,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 283 states have (on average 1.5724381625441697) internal successors, (445), 301 states have internal predecessors, (445), 102 states have call successors, (102), 26 states have call predecessors, (102), 24 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2022-12-14 03:07:30,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 646 transitions. [2022-12-14 03:07:30,094 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 646 transitions. Word has length 58 [2022-12-14 03:07:30,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:07:30,095 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 646 transitions. [2022-12-14 03:07:30,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-14 03:07:30,096 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 646 transitions. [2022-12-14 03:07:30,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 03:07:30,098 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:07:30,098 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:07:30,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 03:07:30,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 03:07:30,301 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:07:30,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:07:30,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2011373226, now seen corresponding path program 1 times [2022-12-14 03:07:30,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:07:30,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892401457] [2022-12-14 03:07:30,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:30,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:07:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 03:07:30,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:07:30,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892401457] [2022-12-14 03:07:30,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892401457] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:07:30,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:07:30,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 03:07:30,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261517692] [2022-12-14 03:07:30,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:07:30,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:07:30,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:07:30,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:07:30,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:07:30,701 INFO L87 Difference]: Start difference. First operand 410 states and 646 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-14 03:07:30,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:07:30,971 INFO L93 Difference]: Finished difference Result 1198 states and 1910 transitions. [2022-12-14 03:07:30,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:07:30,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 58 [2022-12-14 03:07:30,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:07:30,978 INFO L225 Difference]: With dead ends: 1198 [2022-12-14 03:07:30,978 INFO L226 Difference]: Without dead ends: 803 [2022-12-14 03:07:30,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:07:30,982 INFO L413 NwaCegarLoop]: 734 mSDtfsCounter, 618 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 03:07:30,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 1319 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 03:07:30,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-12-14 03:07:31,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 765. [2022-12-14 03:07:31,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 545 states have (on average 1.5926605504587157) internal successors, (868), 572 states have internal predecessors, (868), 176 states have call successors, (176), 46 states have call predecessors, (176), 43 states have return successors, (179), 161 states have call predecessors, (179), 172 states have call successors, (179) [2022-12-14 03:07:31,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1223 transitions. [2022-12-14 03:07:31,032 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1223 transitions. Word has length 58 [2022-12-14 03:07:31,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:07:31,032 INFO L495 AbstractCegarLoop]: Abstraction has 765 states and 1223 transitions. [2022-12-14 03:07:31,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-14 03:07:31,033 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1223 transitions. [2022-12-14 03:07:31,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-14 03:07:31,036 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:07:31,036 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:07:31,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 03:07:31,036 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:07:31,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:07:31,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1418230265, now seen corresponding path program 1 times [2022-12-14 03:07:31,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:07:31,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439779113] [2022-12-14 03:07:31,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:31,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:07:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:31,375 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 03:07:31,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:07:31,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439779113] [2022-12-14 03:07:31,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439779113] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:07:31,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:07:31,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 03:07:31,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655409903] [2022-12-14 03:07:31,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:07:31,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 03:07:31,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:07:31,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 03:07:31,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-14 03:07:31,378 INFO L87 Difference]: Start difference. First operand 765 states and 1223 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-12-14 03:07:34,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:07:34,073 INFO L93 Difference]: Finished difference Result 2753 states and 4451 transitions. [2022-12-14 03:07:34,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-14 03:07:34,074 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 88 [2022-12-14 03:07:34,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:07:34,083 INFO L225 Difference]: With dead ends: 2753 [2022-12-14 03:07:34,083 INFO L226 Difference]: Without dead ends: 2004 [2022-12-14 03:07:34,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2022-12-14 03:07:34,087 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 1856 mSDsluCounter, 2120 mSDsCounter, 0 mSdLazyCounter, 5027 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1941 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 5652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 5027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 03:07:34,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1941 Valid, 2524 Invalid, 5652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [625 Valid, 5027 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 03:07:34,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2022-12-14 03:07:34,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1834. [2022-12-14 03:07:34,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1329 states have (on average 1.5981941309255079) internal successors, (2124), 1377 states have internal predecessors, (2124), 395 states have call successors, (395), 100 states have call predecessors, (395), 109 states have return successors, (449), 383 states have call predecessors, (449), 389 states have call successors, (449) [2022-12-14 03:07:34,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2968 transitions. [2022-12-14 03:07:34,171 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2968 transitions. Word has length 88 [2022-12-14 03:07:34,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:07:34,171 INFO L495 AbstractCegarLoop]: Abstraction has 1834 states and 2968 transitions. [2022-12-14 03:07:34,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-12-14 03:07:34,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2968 transitions. [2022-12-14 03:07:34,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-14 03:07:34,174 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:07:34,174 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:07:34,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 03:07:34,174 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:07:34,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:07:34,175 INFO L85 PathProgramCache]: Analyzing trace with hash -417722912, now seen corresponding path program 1 times [2022-12-14 03:07:34,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:07:34,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639220732] [2022-12-14 03:07:34,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:34,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:07:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:34,525 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 03:07:34,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:07:34,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639220732] [2022-12-14 03:07:34,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639220732] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:07:34,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:07:34,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 03:07:34,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479663454] [2022-12-14 03:07:34,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:07:34,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 03:07:34,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:07:34,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 03:07:34,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 03:07:34,527 INFO L87 Difference]: Start difference. First operand 1834 states and 2968 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-14 03:07:34,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:07:35,000 INFO L93 Difference]: Finished difference Result 4067 states and 6619 transitions. [2022-12-14 03:07:35,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 03:07:35,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 92 [2022-12-14 03:07:35,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:07:35,016 INFO L225 Difference]: With dead ends: 4067 [2022-12-14 03:07:35,017 INFO L226 Difference]: Without dead ends: 2248 [2022-12-14 03:07:35,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 03:07:35,029 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 497 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 2554 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 03:07:35,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 2554 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 03:07:35,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2022-12-14 03:07:35,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 2146. [2022-12-14 03:07:35,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2146 states, 1559 states have (on average 1.581783194355356) internal successors, (2466), 1604 states have internal predecessors, (2466), 455 states have call successors, (455), 122 states have call predecessors, (455), 131 states have return successors, (548), 446 states have call predecessors, (548), 447 states have call successors, (548) [2022-12-14 03:07:35,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2146 states to 2146 states and 3469 transitions. [2022-12-14 03:07:35,128 INFO L78 Accepts]: Start accepts. Automaton has 2146 states and 3469 transitions. Word has length 92 [2022-12-14 03:07:35,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:07:35,128 INFO L495 AbstractCegarLoop]: Abstraction has 2146 states and 3469 transitions. [2022-12-14 03:07:35,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-14 03:07:35,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2146 states and 3469 transitions. [2022-12-14 03:07:35,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 03:07:35,130 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:07:35,130 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:07:35,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 03:07:35,130 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:07:35,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:07:35,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1167229982, now seen corresponding path program 1 times [2022-12-14 03:07:35,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:07:35,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213413153] [2022-12-14 03:07:35,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:35,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:07:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:35,313 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 03:07:35,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:07:35,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213413153] [2022-12-14 03:07:35,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213413153] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:07:35,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:07:35,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 03:07:35,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835268900] [2022-12-14 03:07:35,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:07:35,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 03:07:35,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:07:35,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 03:07:35,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 03:07:35,316 INFO L87 Difference]: Start difference. First operand 2146 states and 3469 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 03:07:35,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:07:35,569 INFO L93 Difference]: Finished difference Result 3609 states and 5892 transitions. [2022-12-14 03:07:35,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 03:07:35,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 93 [2022-12-14 03:07:35,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:07:35,585 INFO L225 Difference]: With dead ends: 3609 [2022-12-14 03:07:35,585 INFO L226 Difference]: Without dead ends: 2216 [2022-12-14 03:07:35,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 03:07:35,597 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 6 mSDsluCounter, 3029 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3644 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:07:35,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3644 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:07:35,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2022-12-14 03:07:35,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 2188. [2022-12-14 03:07:35,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 1589 states have (on average 1.5707992448080554) internal successors, (2496), 1634 states have internal predecessors, (2496), 455 states have call successors, (455), 122 states have call predecessors, (455), 143 states have return successors, (578), 458 states have call predecessors, (578), 447 states have call successors, (578) [2022-12-14 03:07:35,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 3529 transitions. [2022-12-14 03:07:35,740 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 3529 transitions. Word has length 93 [2022-12-14 03:07:35,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:07:35,741 INFO L495 AbstractCegarLoop]: Abstraction has 2188 states and 3529 transitions. [2022-12-14 03:07:35,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 03:07:35,741 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 3529 transitions. [2022-12-14 03:07:35,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-14 03:07:35,744 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:07:35,744 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:07:35,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 03:07:35,744 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:07:35,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:07:35,745 INFO L85 PathProgramCache]: Analyzing trace with hash -679019943, now seen corresponding path program 1 times [2022-12-14 03:07:35,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:07:35,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930775499] [2022-12-14 03:07:35,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:35,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:07:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:36,003 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 03:07:36,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:07:36,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930775499] [2022-12-14 03:07:36,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930775499] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:07:36,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:07:36,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 03:07:36,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83495813] [2022-12-14 03:07:36,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:07:36,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 03:07:36,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:07:36,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 03:07:36,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 03:07:36,006 INFO L87 Difference]: Start difference. First operand 2188 states and 3529 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 03:07:36,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:07:36,275 INFO L93 Difference]: Finished difference Result 3667 states and 5968 transitions. [2022-12-14 03:07:36,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 03:07:36,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 92 [2022-12-14 03:07:36,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:07:36,286 INFO L225 Difference]: With dead ends: 3667 [2022-12-14 03:07:36,286 INFO L226 Difference]: Without dead ends: 2246 [2022-12-14 03:07:36,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 03:07:36,293 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 7 mSDsluCounter, 3010 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3620 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:07:36,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3620 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:07:36,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2022-12-14 03:07:36,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 2194. [2022-12-14 03:07:36,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2194 states, 1595 states have (on average 1.5686520376175548) internal successors, (2502), 1634 states have internal predecessors, (2502), 455 states have call successors, (455), 122 states have call predecessors, (455), 143 states have return successors, (578), 464 states have call predecessors, (578), 447 states have call successors, (578) [2022-12-14 03:07:36,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 3535 transitions. [2022-12-14 03:07:36,396 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 3535 transitions. Word has length 92 [2022-12-14 03:07:36,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:07:36,396 INFO L495 AbstractCegarLoop]: Abstraction has 2194 states and 3535 transitions. [2022-12-14 03:07:36,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 03:07:36,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 3535 transitions. [2022-12-14 03:07:36,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 03:07:36,401 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:07:36,401 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:07:36,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 03:07:36,401 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:07:36,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:07:36,402 INFO L85 PathProgramCache]: Analyzing trace with hash 2030286334, now seen corresponding path program 1 times [2022-12-14 03:07:36,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:07:36,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022799272] [2022-12-14 03:07:36,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:36,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:07:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:36,641 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 03:07:36,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:07:36,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022799272] [2022-12-14 03:07:36,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022799272] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:07:36,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:07:36,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 03:07:36,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250982885] [2022-12-14 03:07:36,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:07:36,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 03:07:36,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:07:36,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 03:07:36,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 03:07:36,644 INFO L87 Difference]: Start difference. First operand 2194 states and 3535 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 03:07:36,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:07:36,892 INFO L93 Difference]: Finished difference Result 3677 states and 5978 transitions. [2022-12-14 03:07:36,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 03:07:36,893 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 93 [2022-12-14 03:07:36,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:07:36,902 INFO L225 Difference]: With dead ends: 3677 [2022-12-14 03:07:36,902 INFO L226 Difference]: Without dead ends: 2252 [2022-12-14 03:07:36,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 03:07:36,909 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 6 mSDsluCounter, 3029 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3644 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:07:36,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3644 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:07:36,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2252 states. [2022-12-14 03:07:36,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2252 to 2200. [2022-12-14 03:07:36,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 1601 states have (on average 1.566520924422236) internal successors, (2508), 1634 states have internal predecessors, (2508), 455 states have call successors, (455), 122 states have call predecessors, (455), 143 states have return successors, (578), 470 states have call predecessors, (578), 447 states have call successors, (578) [2022-12-14 03:07:36,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 3541 transitions. [2022-12-14 03:07:36,990 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 3541 transitions. Word has length 93 [2022-12-14 03:07:36,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:07:36,990 INFO L495 AbstractCegarLoop]: Abstraction has 2200 states and 3541 transitions. [2022-12-14 03:07:36,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 03:07:36,990 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 3541 transitions. [2022-12-14 03:07:36,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-14 03:07:36,992 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:07:36,992 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:07:36,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 03:07:36,992 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:07:36,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:07:36,993 INFO L85 PathProgramCache]: Analyzing trace with hash 427735558, now seen corresponding path program 1 times [2022-12-14 03:07:36,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:07:36,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499389228] [2022-12-14 03:07:36,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:36,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:07:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:37,175 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 03:07:37,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:07:37,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499389228] [2022-12-14 03:07:37,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499389228] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:07:37,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:07:37,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 03:07:37,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559369216] [2022-12-14 03:07:37,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:07:37,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 03:07:37,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:07:37,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 03:07:37,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 03:07:37,176 INFO L87 Difference]: Start difference. First operand 2200 states and 3541 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2022-12-14 03:07:39,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:07:39,029 INFO L93 Difference]: Finished difference Result 5568 states and 9183 transitions. [2022-12-14 03:07:39,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 03:07:39,029 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) Word has length 97 [2022-12-14 03:07:39,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:07:39,054 INFO L225 Difference]: With dead ends: 5568 [2022-12-14 03:07:39,054 INFO L226 Difference]: Without dead ends: 3897 [2022-12-14 03:07:39,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:07:39,069 INFO L413 NwaCegarLoop]: 938 mSDtfsCounter, 1872 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 2564 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2057 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 2964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 2564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-14 03:07:39,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2057 Valid, 2243 Invalid, 2964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 2564 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-14 03:07:39,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3897 states. [2022-12-14 03:07:39,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3897 to 3405. [2022-12-14 03:07:39,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3405 states, 2446 states have (on average 1.5282093213409649) internal successors, (3738), 2503 states have internal predecessors, (3738), 722 states have call successors, (722), 204 states have call predecessors, (722), 236 states have return successors, (946), 737 states have call predecessors, (946), 710 states have call successors, (946) [2022-12-14 03:07:39,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3405 states to 3405 states and 5406 transitions. [2022-12-14 03:07:39,307 INFO L78 Accepts]: Start accepts. Automaton has 3405 states and 5406 transitions. Word has length 97 [2022-12-14 03:07:39,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:07:39,307 INFO L495 AbstractCegarLoop]: Abstraction has 3405 states and 5406 transitions. [2022-12-14 03:07:39,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2022-12-14 03:07:39,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3405 states and 5406 transitions. [2022-12-14 03:07:39,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-14 03:07:39,309 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:07:39,309 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:07:39,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 03:07:39,309 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:07:39,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:07:39,310 INFO L85 PathProgramCache]: Analyzing trace with hash 559040335, now seen corresponding path program 1 times [2022-12-14 03:07:39,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:07:39,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428249651] [2022-12-14 03:07:39,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:39,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:07:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:39,475 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 03:07:39,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:07:39,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428249651] [2022-12-14 03:07:39,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428249651] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:07:39,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:07:39,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 03:07:39,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582446764] [2022-12-14 03:07:39,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:07:39,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 03:07:39,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:07:39,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 03:07:39,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 03:07:39,477 INFO L87 Difference]: Start difference. First operand 3405 states and 5406 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-14 03:07:39,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:07:39,857 INFO L93 Difference]: Finished difference Result 6737 states and 10928 transitions. [2022-12-14 03:07:39,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 03:07:39,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 99 [2022-12-14 03:07:39,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:07:39,875 INFO L225 Difference]: With dead ends: 6737 [2022-12-14 03:07:39,875 INFO L226 Difference]: Without dead ends: 3813 [2022-12-14 03:07:39,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 03:07:39,891 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 235 mSDsluCounter, 2951 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 3599 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 03:07:39,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 3599 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 03:07:39,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3813 states. [2022-12-14 03:07:40,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3813 to 3813. [2022-12-14 03:07:40,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3813 states, 2822 states have (on average 1.5329553508150249) internal successors, (4326), 2891 states have internal predecessors, (4326), 732 states have call successors, (732), 214 states have call predecessors, (732), 258 states have return successors, (956), 747 states have call predecessors, (956), 720 states have call successors, (956) [2022-12-14 03:07:40,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3813 states to 3813 states and 6014 transitions. [2022-12-14 03:07:40,095 INFO L78 Accepts]: Start accepts. Automaton has 3813 states and 6014 transitions. Word has length 99 [2022-12-14 03:07:40,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:07:40,095 INFO L495 AbstractCegarLoop]: Abstraction has 3813 states and 6014 transitions. [2022-12-14 03:07:40,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-14 03:07:40,096 INFO L276 IsEmpty]: Start isEmpty. Operand 3813 states and 6014 transitions. [2022-12-14 03:07:40,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-14 03:07:40,098 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:07:40,098 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:07:40,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 03:07:40,098 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:07:40,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:07:40,098 INFO L85 PathProgramCache]: Analyzing trace with hash -192867656, now seen corresponding path program 1 times [2022-12-14 03:07:40,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:07:40,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124268970] [2022-12-14 03:07:40,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:40,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:07:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:40,296 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 03:07:40,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:07:40,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124268970] [2022-12-14 03:07:40,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124268970] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:07:40,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:07:40,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 03:07:40,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146615486] [2022-12-14 03:07:40,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:07:40,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 03:07:40,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:07:40,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 03:07:40,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 03:07:40,298 INFO L87 Difference]: Start difference. First operand 3813 states and 6014 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-14 03:07:41,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:07:41,848 INFO L93 Difference]: Finished difference Result 7721 states and 12405 transitions. [2022-12-14 03:07:41,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 03:07:41,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 101 [2022-12-14 03:07:41,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:07:41,866 INFO L225 Difference]: With dead ends: 7721 [2022-12-14 03:07:41,866 INFO L226 Difference]: Without dead ends: 4657 [2022-12-14 03:07:41,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-14 03:07:41,877 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1104 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 3299 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 3724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 3299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 03:07:41,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 1597 Invalid, 3724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 3299 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 03:07:41,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4657 states. [2022-12-14 03:07:42,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4657 to 3867. [2022-12-14 03:07:42,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3867 states, 2858 states have (on average 1.5290412876137158) internal successors, (4370), 2935 states have internal predecessors, (4370), 734 states have call successors, (734), 224 states have call predecessors, (734), 274 states have return successors, (978), 747 states have call predecessors, (978), 722 states have call successors, (978) [2022-12-14 03:07:42,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3867 states to 3867 states and 6082 transitions. [2022-12-14 03:07:42,060 INFO L78 Accepts]: Start accepts. Automaton has 3867 states and 6082 transitions. Word has length 101 [2022-12-14 03:07:42,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:07:42,060 INFO L495 AbstractCegarLoop]: Abstraction has 3867 states and 6082 transitions. [2022-12-14 03:07:42,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-14 03:07:42,060 INFO L276 IsEmpty]: Start isEmpty. Operand 3867 states and 6082 transitions. [2022-12-14 03:07:42,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-14 03:07:42,062 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:07:42,062 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:07:42,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 03:07:42,063 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:07:42,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:07:42,063 INFO L85 PathProgramCache]: Analyzing trace with hash 290439778, now seen corresponding path program 1 times [2022-12-14 03:07:42,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:07:42,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171185695] [2022-12-14 03:07:42,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:42,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:07:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:42,155 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 03:07:42,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:07:42,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171185695] [2022-12-14 03:07:42,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171185695] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:07:42,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401435122] [2022-12-14 03:07:42,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:42,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:07:42,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:07:42,157 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:07:42,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 03:07:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:42,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 1601 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 03:07:42,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:07:42,414 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 03:07:42,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:07:42,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401435122] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:07:42,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 03:07:42,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-12-14 03:07:42,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270373594] [2022-12-14 03:07:42,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:07:42,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 03:07:42,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:07:42,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 03:07:42,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 03:07:42,416 INFO L87 Difference]: Start difference. First operand 3867 states and 6082 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 03:07:42,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:07:42,701 INFO L93 Difference]: Finished difference Result 7779 states and 12462 transitions. [2022-12-14 03:07:42,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 03:07:42,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 105 [2022-12-14 03:07:42,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:07:42,718 INFO L225 Difference]: With dead ends: 7779 [2022-12-14 03:07:42,719 INFO L226 Difference]: Without dead ends: 3927 [2022-12-14 03:07:42,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 03:07:42,742 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 85 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:07:42,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1719 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:07:42,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2022-12-14 03:07:42,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 3927. [2022-12-14 03:07:42,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3927 states, 2908 states have (on average 1.5233837689133425) internal successors, (4430), 2985 states have internal predecessors, (4430), 734 states have call successors, (734), 234 states have call predecessors, (734), 284 states have return successors, (978), 747 states have call predecessors, (978), 722 states have call successors, (978) [2022-12-14 03:07:42,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 6142 transitions. [2022-12-14 03:07:42,914 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 6142 transitions. Word has length 105 [2022-12-14 03:07:42,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:07:42,915 INFO L495 AbstractCegarLoop]: Abstraction has 3927 states and 6142 transitions. [2022-12-14 03:07:42,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 03:07:42,916 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 6142 transitions. [2022-12-14 03:07:42,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-14 03:07:42,921 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:07:42,921 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:07:42,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 03:07:43,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:07:43,122 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:07:43,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:07:43,123 INFO L85 PathProgramCache]: Analyzing trace with hash -576089834, now seen corresponding path program 1 times [2022-12-14 03:07:43,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:07:43,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910670851] [2022-12-14 03:07:43,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:43,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:07:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:43,362 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 03:07:43,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:07:43,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910670851] [2022-12-14 03:07:43,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910670851] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:07:43,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117058274] [2022-12-14 03:07:43,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:43,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:07:43,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:07:43,363 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:07:43,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 03:07:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:43,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 03:07:43,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:07:43,632 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 03:07:43,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:07:43,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117058274] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:07:43,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 03:07:43,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-12-14 03:07:43,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226229169] [2022-12-14 03:07:43,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:07:43,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 03:07:43,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:07:43,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 03:07:43,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 03:07:43,634 INFO L87 Difference]: Start difference. First operand 3927 states and 6142 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 03:07:43,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:07:43,863 INFO L93 Difference]: Finished difference Result 7869 states and 12482 transitions. [2022-12-14 03:07:43,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 03:07:43,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 108 [2022-12-14 03:07:43,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:07:43,878 INFO L225 Difference]: With dead ends: 7869 [2022-12-14 03:07:43,878 INFO L226 Difference]: Without dead ends: 3917 [2022-12-14 03:07:43,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:07:43,892 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 91 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:07:43,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1715 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:07:43,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3917 states. [2022-12-14 03:07:44,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3917 to 3917. [2022-12-14 03:07:44,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3917 states, 2898 states have (on average 1.5148378191856453) internal successors, (4390), 2975 states have internal predecessors, (4390), 734 states have call successors, (734), 234 states have call predecessors, (734), 284 states have return successors, (978), 747 states have call predecessors, (978), 722 states have call successors, (978) [2022-12-14 03:07:44,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3917 states to 3917 states and 6102 transitions. [2022-12-14 03:07:44,045 INFO L78 Accepts]: Start accepts. Automaton has 3917 states and 6102 transitions. Word has length 108 [2022-12-14 03:07:44,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:07:44,046 INFO L495 AbstractCegarLoop]: Abstraction has 3917 states and 6102 transitions. [2022-12-14 03:07:44,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 03:07:44,046 INFO L276 IsEmpty]: Start isEmpty. Operand 3917 states and 6102 transitions. [2022-12-14 03:07:44,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-14 03:07:44,050 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:07:44,051 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:07:44,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 03:07:44,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 03:07:44,251 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:07:44,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:07:44,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1635471714, now seen corresponding path program 1 times [2022-12-14 03:07:44,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:07:44,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452731450] [2022-12-14 03:07:44,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:44,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:07:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 03:07:44,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:07:44,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452731450] [2022-12-14 03:07:44,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452731450] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:07:44,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135027657] [2022-12-14 03:07:44,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:44,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:07:44,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:07:44,363 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:07:44,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 03:07:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:44,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 03:07:44,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:07:44,642 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 03:07:44,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:07:44,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135027657] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:07:44,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 03:07:44,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-12-14 03:07:44,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370005892] [2022-12-14 03:07:44,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:07:44,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 03:07:44,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:07:44,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 03:07:44,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:07:44,644 INFO L87 Difference]: Start difference. First operand 3917 states and 6102 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-14 03:07:45,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:07:45,549 INFO L93 Difference]: Finished difference Result 10350 states and 17004 transitions. [2022-12-14 03:07:45,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 03:07:45,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 109 [2022-12-14 03:07:45,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:07:45,576 INFO L225 Difference]: With dead ends: 10350 [2022-12-14 03:07:45,577 INFO L226 Difference]: Without dead ends: 6448 [2022-12-14 03:07:45,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-14 03:07:45,597 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 626 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 03:07:45,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 2080 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 03:07:45,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6448 states. [2022-12-14 03:07:45,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6448 to 6330. [2022-12-14 03:07:45,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6330 states, 4697 states have (on average 1.4826484990419417) internal successors, (6964), 4807 states have internal predecessors, (6964), 1179 states have call successors, (1179), 380 states have call predecessors, (1179), 453 states have return successors, (1937), 1208 states have call predecessors, (1937), 1159 states have call successors, (1937) [2022-12-14 03:07:45,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6330 states to 6330 states and 10080 transitions. [2022-12-14 03:07:45,891 INFO L78 Accepts]: Start accepts. Automaton has 6330 states and 10080 transitions. Word has length 109 [2022-12-14 03:07:45,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:07:45,891 INFO L495 AbstractCegarLoop]: Abstraction has 6330 states and 10080 transitions. [2022-12-14 03:07:45,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-14 03:07:45,891 INFO L276 IsEmpty]: Start isEmpty. Operand 6330 states and 10080 transitions. [2022-12-14 03:07:45,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-14 03:07:45,893 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:07:45,893 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:07:45,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 03:07:46,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 03:07:46,094 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:07:46,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:07:46,094 INFO L85 PathProgramCache]: Analyzing trace with hash 2001192815, now seen corresponding path program 1 times [2022-12-14 03:07:46,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:07:46,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274143209] [2022-12-14 03:07:46,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:46,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:07:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:46,263 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 03:07:46,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:07:46,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274143209] [2022-12-14 03:07:46,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274143209] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:07:46,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54442634] [2022-12-14 03:07:46,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:46,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:07:46,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:07:46,264 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:07:46,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 03:07:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:46,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 03:07:46,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:07:46,583 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 03:07:46,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:07:46,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54442634] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:07:46,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 03:07:46,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-12-14 03:07:46,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383751155] [2022-12-14 03:07:46,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:07:46,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 03:07:46,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:07:46,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 03:07:46,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-14 03:07:46,585 INFO L87 Difference]: Start difference. First operand 6330 states and 10080 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-14 03:07:47,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:07:47,539 INFO L93 Difference]: Finished difference Result 14273 states and 23499 transitions. [2022-12-14 03:07:47,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 03:07:47,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 110 [2022-12-14 03:07:47,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:07:47,568 INFO L225 Difference]: With dead ends: 14273 [2022-12-14 03:07:47,569 INFO L226 Difference]: Without dead ends: 7958 [2022-12-14 03:07:47,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-12-14 03:07:47,589 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 695 mSDsluCounter, 2447 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 3340 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 03:07:47,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 3340 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 03:07:47,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7958 states. [2022-12-14 03:07:47,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7958 to 7898. [2022-12-14 03:07:47,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7898 states, 5875 states have (on average 1.4665531914893617) internal successors, (8616), 6021 states have internal predecessors, (8616), 1384 states have call successors, (1384), 544 states have call predecessors, (1384), 638 states have return successors, (3258), 1398 states have call predecessors, (3258), 1348 states have call successors, (3258) [2022-12-14 03:07:47,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7898 states to 7898 states and 13258 transitions. [2022-12-14 03:07:47,987 INFO L78 Accepts]: Start accepts. Automaton has 7898 states and 13258 transitions. Word has length 110 [2022-12-14 03:07:47,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:07:47,988 INFO L495 AbstractCegarLoop]: Abstraction has 7898 states and 13258 transitions. [2022-12-14 03:07:47,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-14 03:07:47,988 INFO L276 IsEmpty]: Start isEmpty. Operand 7898 states and 13258 transitions. [2022-12-14 03:07:47,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-14 03:07:47,990 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:07:47,990 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:07:47,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 03:07:48,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:07:48,192 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:07:48,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:07:48,193 INFO L85 PathProgramCache]: Analyzing trace with hash -849182340, now seen corresponding path program 1 times [2022-12-14 03:07:48,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:07:48,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303771097] [2022-12-14 03:07:48,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:48,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:07:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 03:07:48,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:07:48,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303771097] [2022-12-14 03:07:48,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303771097] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:07:48,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651697244] [2022-12-14 03:07:48,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:48,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:07:48,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:07:48,336 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:07:48,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 03:07:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:48,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 03:07:48,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:07:48,597 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 03:07:48,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:07:48,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651697244] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:07:48,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 03:07:48,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-12-14 03:07:48,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728529708] [2022-12-14 03:07:48,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:07:48,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 03:07:48,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:07:48,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 03:07:48,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:07:48,600 INFO L87 Difference]: Start difference. First operand 7898 states and 13258 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 03:07:49,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:07:49,137 INFO L93 Difference]: Finished difference Result 16089 states and 28644 transitions. [2022-12-14 03:07:49,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 03:07:49,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 109 [2022-12-14 03:07:49,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:07:49,190 INFO L225 Difference]: With dead ends: 16089 [2022-12-14 03:07:49,190 INFO L226 Difference]: Without dead ends: 8214 [2022-12-14 03:07:49,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:07:49,226 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 2 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2445 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:07:49,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2445 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:07:49,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8214 states. [2022-12-14 03:07:49,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8214 to 8030. [2022-12-14 03:07:49,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8030 states, 5989 states have (on average 1.457672399398898) internal successors, (8730), 6105 states have internal predecessors, (8730), 1384 states have call successors, (1384), 544 states have call predecessors, (1384), 656 states have return successors, (3306), 1446 states have call predecessors, (3306), 1348 states have call successors, (3306) [2022-12-14 03:07:49,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8030 states to 8030 states and 13420 transitions. [2022-12-14 03:07:49,616 INFO L78 Accepts]: Start accepts. Automaton has 8030 states and 13420 transitions. Word has length 109 [2022-12-14 03:07:49,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:07:49,617 INFO L495 AbstractCegarLoop]: Abstraction has 8030 states and 13420 transitions. [2022-12-14 03:07:49,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 03:07:49,617 INFO L276 IsEmpty]: Start isEmpty. Operand 8030 states and 13420 transitions. [2022-12-14 03:07:49,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-14 03:07:49,619 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:07:49,619 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:07:49,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 03:07:49,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 03:07:49,821 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:07:49,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:07:49,822 INFO L85 PathProgramCache]: Analyzing trace with hash 274873760, now seen corresponding path program 1 times [2022-12-14 03:07:49,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:07:49,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829197293] [2022-12-14 03:07:49,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:49,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:07:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 03:07:49,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:07:49,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829197293] [2022-12-14 03:07:49,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829197293] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:07:49,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429830160] [2022-12-14 03:07:49,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:49,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:07:49,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:07:49,982 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:07:49,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 03:07:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:50,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 03:07:50,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:07:50,214 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 03:07:50,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:07:50,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429830160] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:07:50,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 03:07:50,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-12-14 03:07:50,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031065054] [2022-12-14 03:07:50,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:07:50,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 03:07:50,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:07:50,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 03:07:50,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 03:07:50,216 INFO L87 Difference]: Start difference. First operand 8030 states and 13420 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 03:07:50,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:07:50,819 INFO L93 Difference]: Finished difference Result 16466 states and 28541 transitions. [2022-12-14 03:07:50,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 03:07:50,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 112 [2022-12-14 03:07:50,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:07:50,848 INFO L225 Difference]: With dead ends: 16466 [2022-12-14 03:07:50,848 INFO L226 Difference]: Without dead ends: 8460 [2022-12-14 03:07:50,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 03:07:50,894 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 19 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 03:07:50,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1675 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 03:07:50,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8460 states. [2022-12-14 03:07:51,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8460 to 8364. [2022-12-14 03:07:51,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8364 states, 6323 states have (on average 1.4670251462913173) internal successors, (9276), 6439 states have internal predecessors, (9276), 1384 states have call successors, (1384), 544 states have call predecessors, (1384), 656 states have return successors, (3306), 1446 states have call predecessors, (3306), 1348 states have call successors, (3306) [2022-12-14 03:07:51,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8364 states to 8364 states and 13966 transitions. [2022-12-14 03:07:51,418 INFO L78 Accepts]: Start accepts. Automaton has 8364 states and 13966 transitions. Word has length 112 [2022-12-14 03:07:51,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:07:51,419 INFO L495 AbstractCegarLoop]: Abstraction has 8364 states and 13966 transitions. [2022-12-14 03:07:51,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 03:07:51,419 INFO L276 IsEmpty]: Start isEmpty. Operand 8364 states and 13966 transitions. [2022-12-14 03:07:51,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-14 03:07:51,422 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:07:51,422 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:07:51,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 03:07:51,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 03:07:51,624 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:07:51,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:07:51,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1831917383, now seen corresponding path program 1 times [2022-12-14 03:07:51,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:07:51,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647581890] [2022-12-14 03:07:51,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:51,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:07:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:51,763 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 03:07:51,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:07:51,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647581890] [2022-12-14 03:07:51,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647581890] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:07:51,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679828006] [2022-12-14 03:07:51,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:51,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:07:51,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:07:51,765 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:07:51,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 03:07:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:51,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 1619 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 03:07:51,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:07:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 03:07:52,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:07:52,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679828006] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:07:52,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 03:07:52,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-12-14 03:07:52,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931736406] [2022-12-14 03:07:52,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:07:52,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 03:07:52,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:07:52,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 03:07:52,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:07:52,002 INFO L87 Difference]: Start difference. First operand 8364 states and 13966 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-14 03:07:53,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:07:53,280 INFO L93 Difference]: Finished difference Result 21880 states and 39775 transitions. [2022-12-14 03:07:53,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 03:07:53,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 113 [2022-12-14 03:07:53,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:07:53,361 INFO L225 Difference]: With dead ends: 21880 [2022-12-14 03:07:53,361 INFO L226 Difference]: Without dead ends: 14362 [2022-12-14 03:07:53,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-14 03:07:53,409 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 637 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 2130 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 03:07:53,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 2130 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 03:07:53,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14362 states. [2022-12-14 03:07:54,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14362 to 13912. [2022-12-14 03:07:54,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13912 states, 10535 states have (on average 1.4656858092074039) internal successors, (15441), 10726 states have internal predecessors, (15441), 2304 states have call successors, (2304), 914 states have call predecessors, (2304), 1072 states have return successors, (7045), 2389 states have call predecessors, (7045), 2242 states have call successors, (7045) [2022-12-14 03:07:54,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13912 states to 13912 states and 24790 transitions. [2022-12-14 03:07:54,136 INFO L78 Accepts]: Start accepts. Automaton has 13912 states and 24790 transitions. Word has length 113 [2022-12-14 03:07:54,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:07:54,136 INFO L495 AbstractCegarLoop]: Abstraction has 13912 states and 24790 transitions. [2022-12-14 03:07:54,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-14 03:07:54,136 INFO L276 IsEmpty]: Start isEmpty. Operand 13912 states and 24790 transitions. [2022-12-14 03:07:54,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-14 03:07:54,139 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:07:54,139 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:07:54,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 03:07:54,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:07:54,341 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:07:54,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:07:54,342 INFO L85 PathProgramCache]: Analyzing trace with hash 197744803, now seen corresponding path program 1 times [2022-12-14 03:07:54,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:07:54,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295706119] [2022-12-14 03:07:54,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:54,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:07:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:54,469 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 03:07:54,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:07:54,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295706119] [2022-12-14 03:07:54,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295706119] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:07:54,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635690341] [2022-12-14 03:07:54,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:54,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:07:54,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:07:54,471 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:07:54,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 03:07:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:54,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 03:07:54,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:07:54,650 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 03:07:54,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:07:54,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635690341] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:07:54,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 03:07:54,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-12-14 03:07:54,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486620399] [2022-12-14 03:07:54,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:07:54,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 03:07:54,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:07:54,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 03:07:54,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 03:07:54,652 INFO L87 Difference]: Start difference. First operand 13912 states and 24790 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 03:07:55,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:07:55,731 INFO L93 Difference]: Finished difference Result 28208 states and 53241 transitions. [2022-12-14 03:07:55,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 03:07:55,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 113 [2022-12-14 03:07:55,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:07:55,799 INFO L225 Difference]: With dead ends: 28208 [2022-12-14 03:07:55,799 INFO L226 Difference]: Without dead ends: 14320 [2022-12-14 03:07:55,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 03:07:55,950 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 4 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:07:55,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1801 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:07:55,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14320 states. [2022-12-14 03:07:56,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14320 to 13972. [2022-12-14 03:07:56,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13972 states, 10595 states have (on average 1.4521000471920718) internal successors, (15385), 10786 states have internal predecessors, (15385), 2304 states have call successors, (2304), 914 states have call predecessors, (2304), 1072 states have return successors, (7045), 2389 states have call predecessors, (7045), 2242 states have call successors, (7045) [2022-12-14 03:07:56,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13972 states to 13972 states and 24734 transitions. [2022-12-14 03:07:56,679 INFO L78 Accepts]: Start accepts. Automaton has 13972 states and 24734 transitions. Word has length 113 [2022-12-14 03:07:56,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:07:56,679 INFO L495 AbstractCegarLoop]: Abstraction has 13972 states and 24734 transitions. [2022-12-14 03:07:56,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 03:07:56,679 INFO L276 IsEmpty]: Start isEmpty. Operand 13972 states and 24734 transitions. [2022-12-14 03:07:56,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-14 03:07:56,681 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:07:56,681 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:07:56,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 03:07:56,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 03:07:56,882 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:07:56,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:07:56,883 INFO L85 PathProgramCache]: Analyzing trace with hash -268452147, now seen corresponding path program 1 times [2022-12-14 03:07:56,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:07:56,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090759101] [2022-12-14 03:07:56,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:56,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:07:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:57,036 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 03:07:57,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:07:57,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090759101] [2022-12-14 03:07:57,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090759101] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:07:57,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278372568] [2022-12-14 03:07:57,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:57,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:07:57,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:07:57,038 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:07:57,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 03:07:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:07:57,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 1621 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 03:07:57,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:07:57,307 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 03:07:57,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:07:57,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278372568] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:07:57,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 03:07:57,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-12-14 03:07:57,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308040433] [2022-12-14 03:07:57,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:07:57,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 03:07:57,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:07:57,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 03:07:57,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:07:57,309 INFO L87 Difference]: Start difference. First operand 13972 states and 24734 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-14 03:07:59,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:07:59,079 INFO L93 Difference]: Finished difference Result 33003 states and 62537 transitions. [2022-12-14 03:07:59,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 03:07:59,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 115 [2022-12-14 03:07:59,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:07:59,185 INFO L225 Difference]: With dead ends: 33003 [2022-12-14 03:07:59,185 INFO L226 Difference]: Without dead ends: 19918 [2022-12-14 03:07:59,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-14 03:07:59,357 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 637 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 2371 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 03:07:59,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 2371 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 03:07:59,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19918 states. [2022-12-14 03:08:00,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19918 to 19502. [2022-12-14 03:08:00,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19502 states, 14791 states have (on average 1.45236968426746) internal successors, (21482), 15057 states have internal predecessors, (21482), 3224 states have call successors, (3224), 1282 states have call predecessors, (3224), 1486 states have return successors, (11918), 3332 states have call predecessors, (11918), 3136 states have call successors, (11918) [2022-12-14 03:08:00,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19502 states to 19502 states and 36624 transitions. [2022-12-14 03:08:00,884 INFO L78 Accepts]: Start accepts. Automaton has 19502 states and 36624 transitions. Word has length 115 [2022-12-14 03:08:00,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:08:00,885 INFO L495 AbstractCegarLoop]: Abstraction has 19502 states and 36624 transitions. [2022-12-14 03:08:00,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-14 03:08:00,885 INFO L276 IsEmpty]: Start isEmpty. Operand 19502 states and 36624 transitions. [2022-12-14 03:08:00,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-14 03:08:00,887 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:08:00,887 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:08:00,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 03:08:01,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:08:01,089 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:08:01,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:08:01,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1959905332, now seen corresponding path program 1 times [2022-12-14 03:08:01,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:08:01,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932252637] [2022-12-14 03:08:01,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:08:01,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:08:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:08:01,211 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 03:08:01,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:08:01,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932252637] [2022-12-14 03:08:01,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932252637] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:08:01,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421651660] [2022-12-14 03:08:01,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:08:01,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:08:01,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:08:01,212 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:08:01,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 03:08:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:08:01,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 1622 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 03:08:01,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:08:01,455 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 03:08:01,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:08:01,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421651660] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:08:01,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 03:08:01,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-12-14 03:08:01,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511696654] [2022-12-14 03:08:01,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:08:01,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 03:08:01,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:08:01,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 03:08:01,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:08:01,457 INFO L87 Difference]: Start difference. First operand 19502 states and 36624 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-14 03:08:03,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:08:03,529 INFO L93 Difference]: Finished difference Result 42784 states and 83876 transitions. [2022-12-14 03:08:03,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 03:08:03,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 116 [2022-12-14 03:08:03,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:08:03,643 INFO L225 Difference]: With dead ends: 42784 [2022-12-14 03:08:03,643 INFO L226 Difference]: Without dead ends: 24206 [2022-12-14 03:08:03,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-14 03:08:03,864 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 676 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 2120 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 03:08:03,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 2120 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 03:08:03,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24206 states. [2022-12-14 03:08:05,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24206 to 23330. [2022-12-14 03:08:05,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23330 states, 17556 states have (on average 1.45414673046252) internal successors, (25529), 17913 states have internal predecessors, (25529), 3982 states have call successors, (3982), 1582 states have call predecessors, (3982), 1791 states have return successors, (15779), 4056 states have call predecessors, (15779), 3876 states have call successors, (15779) [2022-12-14 03:08:05,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23330 states to 23330 states and 45290 transitions. [2022-12-14 03:08:05,974 INFO L78 Accepts]: Start accepts. Automaton has 23330 states and 45290 transitions. Word has length 116 [2022-12-14 03:08:05,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:08:05,975 INFO L495 AbstractCegarLoop]: Abstraction has 23330 states and 45290 transitions. [2022-12-14 03:08:05,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-14 03:08:05,975 INFO L276 IsEmpty]: Start isEmpty. Operand 23330 states and 45290 transitions. [2022-12-14 03:08:05,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-14 03:08:05,978 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:08:05,978 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:08:05,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 03:08:06,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:08:06,179 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:08:06,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:08:06,180 INFO L85 PathProgramCache]: Analyzing trace with hash -236013640, now seen corresponding path program 1 times [2022-12-14 03:08:06,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:08:06,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955247079] [2022-12-14 03:08:06,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:08:06,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:08:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:08:06,370 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-14 03:08:06,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:08:06,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955247079] [2022-12-14 03:08:06,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955247079] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:08:06,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512222693] [2022-12-14 03:08:06,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:08:06,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:08:06,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:08:06,371 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:08:06,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 03:08:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:08:06,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 1620 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 03:08:06,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:08:06,617 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 03:08:06,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:08:06,775 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 03:08:06,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512222693] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:08:06,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [745227282] [2022-12-14 03:08:06,792 INFO L159 IcfgInterpreter]: Started Sifa with 103 locations of interest [2022-12-14 03:08:06,792 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 03:08:06,795 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 03:08:06,799 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 03:08:06,799 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 03:08:11,539 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 580 for LOIs [2022-12-14 03:08:15,607 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__twothirdsfull with input of size 576 for LOIs [2022-12-14 03:08:15,876 INFO L197 IcfgInterpreter]: Interpreting procedure existInLiftCallsInDirection with input of size 59 for LOIs [2022-12-14 03:08:15,897 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 443 for LOIs [2022-12-14 03:08:15,974 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 546 for LOIs [2022-12-14 03:08:18,535 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 796 for LOIs [2022-12-14 03:08:46,785 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 645 for LOIs [2022-12-14 03:08:47,296 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 03:08:57,702 WARN L233 SmtUtils]: Spent 7.22s on a formula simplification. DAG size of input: 645 DAG size of output: 516 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:09:04,209 WARN L233 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 685 DAG size of output: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:09:15,993 WARN L233 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 796 DAG size of output: 661 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:09:27,523 WARN L233 SmtUtils]: Spent 10.77s on a formula simplification. DAG size of input: 898 DAG size of output: 730 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:10:00,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [745227282] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:10:00,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 03:10:00,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [5, 6, 7] total 44 [2022-12-14 03:10:00,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339843717] [2022-12-14 03:10:00,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:10:00,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-14 03:10:00,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:10:00,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-14 03:10:00,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1678, Unknown=0, NotChecked=0, Total=1892 [2022-12-14 03:10:00,523 INFO L87 Difference]: Start difference. First operand 23330 states and 45290 transitions. Second operand has 32 states, 27 states have (on average 2.7037037037037037) internal successors, (73), 21 states have internal predecessors, (73), 10 states have call successors, (19), 8 states have call predecessors, (19), 6 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2022-12-14 03:10:19,772 WARN L233 SmtUtils]: Spent 6.57s on a formula simplification. DAG size of input: 730 DAG size of output: 563 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:11:02,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:11:02,627 INFO L93 Difference]: Finished difference Result 46732 states and 90716 transitions. [2022-12-14 03:11:02,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-14 03:11:02,629 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 2.7037037037037037) internal successors, (73), 21 states have internal predecessors, (73), 10 states have call successors, (19), 8 states have call predecessors, (19), 6 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) Word has length 117 [2022-12-14 03:11:02,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:11:02,746 INFO L225 Difference]: With dead ends: 46732 [2022-12-14 03:11:02,746 INFO L226 Difference]: Without dead ends: 23425 [2022-12-14 03:11:02,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 307 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 94.3s TimeCoverageRelationStatistics Valid=252, Invalid=2100, Unknown=0, NotChecked=0, Total=2352 [2022-12-14 03:11:02,986 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 109 mSDsluCounter, 5801 mSDsCounter, 0 mSdLazyCounter, 8867 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 6352 SdHoareTripleChecker+Invalid, 8893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 8867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.3s IncrementalHoareTripleChecker+Time [2022-12-14 03:11:02,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 6352 Invalid, 8893 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 8867 Invalid, 0 Unknown, 0 Unchecked, 39.3s Time] [2022-12-14 03:11:02,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23425 states. [2022-12-14 03:11:04,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23425 to 23358. [2022-12-14 03:11:04,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23358 states, 17577 states have (on average 1.4537179268362064) internal successors, (25552), 17933 states have internal predecessors, (25552), 3985 states have call successors, (3985), 1587 states have call predecessors, (3985), 1795 states have return successors, (15784), 4059 states have call predecessors, (15784), 3879 states have call successors, (15784) [2022-12-14 03:11:04,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23358 states to 23358 states and 45321 transitions. [2022-12-14 03:11:04,627 INFO L78 Accepts]: Start accepts. Automaton has 23358 states and 45321 transitions. Word has length 117 [2022-12-14 03:11:04,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:11:04,627 INFO L495 AbstractCegarLoop]: Abstraction has 23358 states and 45321 transitions. [2022-12-14 03:11:04,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 2.7037037037037037) internal successors, (73), 21 states have internal predecessors, (73), 10 states have call successors, (19), 8 states have call predecessors, (19), 6 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2022-12-14 03:11:04,627 INFO L276 IsEmpty]: Start isEmpty. Operand 23358 states and 45321 transitions. [2022-12-14 03:11:04,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-12-14 03:11:04,630 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:11:04,630 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:11:04,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-14 03:11:04,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:11:04,831 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:11:04,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:11:04,833 INFO L85 PathProgramCache]: Analyzing trace with hash -307134789, now seen corresponding path program 1 times [2022-12-14 03:11:04,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:11:04,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509402906] [2022-12-14 03:11:04,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:04,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:11:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:11:04,992 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-14 03:11:04,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:11:04,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509402906] [2022-12-14 03:11:04,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509402906] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:11:04,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:11:04,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 03:11:04,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050062817] [2022-12-14 03:11:04,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:11:04,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 03:11:04,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:11:04,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 03:11:04,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 03:11:04,994 INFO L87 Difference]: Start difference. First operand 23358 states and 45321 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 03:11:07,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:11:07,144 INFO L93 Difference]: Finished difference Result 48634 states and 101130 transitions. [2022-12-14 03:11:07,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 03:11:07,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 118 [2022-12-14 03:11:07,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:11:07,304 INFO L225 Difference]: With dead ends: 48634 [2022-12-14 03:11:07,304 INFO L226 Difference]: Without dead ends: 25883 [2022-12-14 03:11:07,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 03:11:07,717 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 177 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2532 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 03:11:07,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2532 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 03:11:07,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25883 states. [2022-12-14 03:11:09,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25883 to 23463. [2022-12-14 03:11:09,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23463 states, 17682 states have (on average 1.4510236398597445) internal successors, (25657), 18038 states have internal predecessors, (25657), 3985 states have call successors, (3985), 1587 states have call predecessors, (3985), 1795 states have return successors, (15784), 4059 states have call predecessors, (15784), 3879 states have call successors, (15784) [2022-12-14 03:11:09,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23463 states to 23463 states and 45426 transitions. [2022-12-14 03:11:09,436 INFO L78 Accepts]: Start accepts. Automaton has 23463 states and 45426 transitions. Word has length 118 [2022-12-14 03:11:09,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:11:09,436 INFO L495 AbstractCegarLoop]: Abstraction has 23463 states and 45426 transitions. [2022-12-14 03:11:09,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 03:11:09,436 INFO L276 IsEmpty]: Start isEmpty. Operand 23463 states and 45426 transitions. [2022-12-14 03:11:09,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-12-14 03:11:09,439 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:11:09,439 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:11:09,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-14 03:11:09,439 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:11:09,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:11:09,440 INFO L85 PathProgramCache]: Analyzing trace with hash -666579851, now seen corresponding path program 1 times [2022-12-14 03:11:09,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:11:09,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745368285] [2022-12-14 03:11:09,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:09,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:11:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:11:09,547 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 03:11:09,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:11:09,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745368285] [2022-12-14 03:11:09,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745368285] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:11:09,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318615701] [2022-12-14 03:11:09,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:09,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:11:09,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:11:09,548 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:11:09,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 03:11:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:11:09,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 1630 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 03:11:09,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:11:09,780 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 03:11:09,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:11:09,910 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 03:11:09,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318615701] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:11:09,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1889749163] [2022-12-14 03:11:09,914 INFO L159 IcfgInterpreter]: Started Sifa with 107 locations of interest [2022-12-14 03:11:09,915 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 03:11:09,915 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 03:11:09,915 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 03:11:09,915 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 03:11:13,846 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 580 for LOIs [2022-12-14 03:11:18,069 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__twothirdsfull with input of size 576 for LOIs [2022-12-14 03:11:22,794 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 106 for LOIs [2022-12-14 03:11:22,852 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 456 for LOIs [2022-12-14 03:11:22,955 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 77 for LOIs [2022-12-14 03:11:22,970 INFO L197 IcfgInterpreter]: Interpreting procedure existInLiftCallsInDirection with input of size 59 for LOIs [2022-12-14 03:11:22,993 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 84 for LOIs [2022-12-14 03:11:23,079 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 79 for LOIs [2022-12-14 03:11:23,084 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 443 for LOIs [2022-12-14 03:11:23,159 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 546 for LOIs [2022-12-14 03:11:25,829 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 796 for LOIs [2022-12-14 03:11:30,220 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 645 for LOIs [2022-12-14 03:11:30,720 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 03:11:40,017 WARN L233 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 645 DAG size of output: 516 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:11:46,668 WARN L233 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 685 DAG size of output: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:11:57,884 WARN L233 SmtUtils]: Spent 6.20s on a formula simplification. DAG size of input: 796 DAG size of output: 661 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:12:03,672 WARN L233 SmtUtils]: Spent 5.52s on a formula simplification that was a NOOP. DAG size: 785 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:12:49,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1889749163] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:12:49,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 03:12:49,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [5, 6, 7] total 68 [2022-12-14 03:12:49,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625043525] [2022-12-14 03:12:49,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:12:49,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-12-14 03:12:49,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:12:49,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-12-14 03:12:49,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=4195, Unknown=0, NotChecked=0, Total=4556 [2022-12-14 03:12:49,252 INFO L87 Difference]: Start difference. First operand 23463 states and 45426 transitions. Second operand has 56 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 36 states have internal predecessors, (76), 15 states have call successors, (20), 13 states have call predecessors, (20), 11 states have return successors, (18), 14 states have call predecessors, (18), 14 states have call successors, (18) [2022-12-14 03:13:09,093 WARN L233 SmtUtils]: Spent 6.59s on a formula simplification. DAG size of input: 785 DAG size of output: 566 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:14:21,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:14:21,997 INFO L93 Difference]: Finished difference Result 46972 states and 90965 transitions. [2022-12-14 03:14:21,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-14 03:14:21,998 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 36 states have internal predecessors, (76), 15 states have call successors, (20), 13 states have call predecessors, (20), 11 states have return successors, (18), 14 states have call predecessors, (18), 14 states have call successors, (18) Word has length 123 [2022-12-14 03:14:21,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:14:22,145 INFO L225 Difference]: With dead ends: 46972 [2022-12-14 03:14:22,145 INFO L226 Difference]: Without dead ends: 23554 [2022-12-14 03:14:22,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 299 SyntacticMatches, 7 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2147 ImplicationChecksByTransitivity, 134.9s TimeCoverageRelationStatistics Valid=509, Invalid=6297, Unknown=0, NotChecked=0, Total=6806 [2022-12-14 03:14:22,345 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 181 mSDsluCounter, 7413 mSDsCounter, 0 mSdLazyCounter, 13107 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 7968 SdHoareTripleChecker+Invalid, 13153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 13107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.5s IncrementalHoareTripleChecker+Time [2022-12-14 03:14:22,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 7968 Invalid, 13153 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 13107 Invalid, 0 Unknown, 0 Unchecked, 34.5s Time] [2022-12-14 03:14:22,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23554 states. [2022-12-14 03:14:23,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23554 to 23473. [2022-12-14 03:14:23,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23473 states, 17688 states have (on average 1.4508141112618724) internal successors, (25662), 18045 states have internal predecessors, (25662), 3987 states have call successors, (3987), 1588 states have call predecessors, (3987), 1797 states have return successors, (15788), 4061 states have call predecessors, (15788), 3881 states have call successors, (15788) [2022-12-14 03:14:24,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23473 states to 23473 states and 45437 transitions. [2022-12-14 03:14:24,061 INFO L78 Accepts]: Start accepts. Automaton has 23473 states and 45437 transitions. Word has length 123 [2022-12-14 03:14:24,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:14:24,061 INFO L495 AbstractCegarLoop]: Abstraction has 23473 states and 45437 transitions. [2022-12-14 03:14:24,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 36 states have internal predecessors, (76), 15 states have call successors, (20), 13 states have call predecessors, (20), 11 states have return successors, (18), 14 states have call predecessors, (18), 14 states have call successors, (18) [2022-12-14 03:14:24,061 INFO L276 IsEmpty]: Start isEmpty. Operand 23473 states and 45437 transitions. [2022-12-14 03:14:24,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-12-14 03:14:24,064 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:14:24,064 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:14:24,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-14 03:14:24,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-14 03:14:24,265 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:14:24,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:14:24,267 INFO L85 PathProgramCache]: Analyzing trace with hash -256870792, now seen corresponding path program 1 times [2022-12-14 03:14:24,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:14:24,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012190520] [2022-12-14 03:14:24,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:14:24,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:14:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:14:24,382 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 03:14:24,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:14:24,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012190520] [2022-12-14 03:14:24,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012190520] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:14:24,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249945121] [2022-12-14 03:14:24,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:14:24,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:14:24,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:14:24,383 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:14:24,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 03:14:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:14:24,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 1629 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 03:14:24,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:14:24,627 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 03:14:24,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:14:24,737 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 03:14:24,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249945121] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:14:24,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1560063470] [2022-12-14 03:14:24,739 INFO L159 IcfgInterpreter]: Started Sifa with 106 locations of interest [2022-12-14 03:14:24,739 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 03:14:24,740 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 03:14:24,740 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 03:14:24,740 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 03:14:28,642 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 580 for LOIs [2022-12-14 03:14:33,627 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__twothirdsfull with input of size 576 for LOIs [2022-12-14 03:14:38,370 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 107 for LOIs [2022-12-14 03:14:38,895 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection__wrappee__weight with input of size 121 for LOIs [2022-12-14 03:14:39,219 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 520 for LOIs [2022-12-14 03:14:39,431 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 76 for LOIs [2022-12-14 03:14:39,446 INFO L197 IcfgInterpreter]: Interpreting procedure existInLiftCallsInDirection with input of size 66 for LOIs [2022-12-14 03:14:39,487 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 106 for LOIs [2022-12-14 03:14:39,845 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 76 for LOIs [2022-12-14 03:14:39,850 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 443 for LOIs [2022-12-14 03:14:39,926 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 546 for LOIs [2022-12-14 03:14:42,463 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 796 for LOIs [2022-12-14 03:14:46,870 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 645 for LOIs [2022-12-14 03:14:47,379 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 03:14:55,654 WARN L233 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 645 DAG size of output: 516 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:15:02,124 WARN L233 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 685 DAG size of output: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:15:13,480 WARN L233 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 796 DAG size of output: 661 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:15:18,814 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 785 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:16:15,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1560063470] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:16:15,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 03:16:15,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [5, 6, 7] total 78 [2022-12-14 03:16:15,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050979839] [2022-12-14 03:16:15,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:16:15,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-12-14 03:16:15,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:16:15,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-12-14 03:16:15,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=5572, Unknown=0, NotChecked=0, Total=6006 [2022-12-14 03:16:15,782 INFO L87 Difference]: Start difference. First operand 23473 states and 45437 transitions. Second operand has 66 states, 55 states have (on average 1.3636363636363635) internal successors, (75), 42 states have internal predecessors, (75), 18 states have call successors, (20), 14 states have call predecessors, (20), 12 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2022-12-14 03:16:35,348 WARN L233 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 785 DAG size of output: 566 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:16:49,304 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 646 DAG size of output: 586 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:18:11,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:18:11,432 INFO L93 Difference]: Finished difference Result 46167 states and 88885 transitions. [2022-12-14 03:18:11,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-12-14 03:18:11,433 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 55 states have (on average 1.3636363636363635) internal successors, (75), 42 states have internal predecessors, (75), 18 states have call successors, (20), 14 states have call predecessors, (20), 12 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) Word has length 122 [2022-12-14 03:18:11,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:18:11,574 INFO L225 Difference]: With dead ends: 46167 [2022-12-14 03:18:11,574 INFO L226 Difference]: Without dead ends: 23753 [2022-12-14 03:18:11,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 284 SyntacticMatches, 9 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2949 ImplicationChecksByTransitivity, 151.4s TimeCoverageRelationStatistics Valid=598, Invalid=8332, Unknown=0, NotChecked=0, Total=8930 [2022-12-14 03:18:11,752 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 317 mSDsluCounter, 12760 mSDsCounter, 0 mSdLazyCounter, 21079 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 13340 SdHoareTripleChecker+Invalid, 21148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 21079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.6s IncrementalHoareTripleChecker+Time [2022-12-14 03:18:11,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 13340 Invalid, 21148 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [69 Valid, 21079 Invalid, 0 Unknown, 0 Unchecked, 50.6s Time] [2022-12-14 03:18:11,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23753 states. [2022-12-14 03:18:13,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23753 to 23671. [2022-12-14 03:18:13,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23671 states, 17855 states have (on average 1.4497899747969756) internal successors, (25886), 18215 states have internal predecessors, (25886), 4001 states have call successors, (4001), 1593 states have call predecessors, (4001), 1814 states have return successors, (15816), 4084 states have call predecessors, (15816), 3895 states have call successors, (15816) [2022-12-14 03:18:13,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23671 states to 23671 states and 45703 transitions. [2022-12-14 03:18:13,539 INFO L78 Accepts]: Start accepts. Automaton has 23671 states and 45703 transitions. Word has length 122 [2022-12-14 03:18:13,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:18:13,540 INFO L495 AbstractCegarLoop]: Abstraction has 23671 states and 45703 transitions. [2022-12-14 03:18:13,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 55 states have (on average 1.3636363636363635) internal successors, (75), 42 states have internal predecessors, (75), 18 states have call successors, (20), 14 states have call predecessors, (20), 12 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2022-12-14 03:18:13,540 INFO L276 IsEmpty]: Start isEmpty. Operand 23671 states and 45703 transitions. [2022-12-14 03:18:13,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-12-14 03:18:13,544 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:18:13,545 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:18:13,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-14 03:18:13,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-14 03:18:13,746 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:18:13,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:18:13,747 INFO L85 PathProgramCache]: Analyzing trace with hash 736777488, now seen corresponding path program 1 times [2022-12-14 03:18:13,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:18:13,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937991242] [2022-12-14 03:18:13,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:18:13,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:18:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:18:13,936 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 03:18:13,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:18:13,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937991242] [2022-12-14 03:18:13,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937991242] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:18:13,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311178232] [2022-12-14 03:18:13,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:18:13,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:18:13,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:18:13,938 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:18:13,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e27c84-e0f1-4f69-a31b-792c3a307787/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 03:18:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:18:14,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 03:18:14,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:18:14,197 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 03:18:14,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:18:14,310 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 03:18:14,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311178232] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:18:14,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1604639912] [2022-12-14 03:18:14,312 INFO L159 IcfgInterpreter]: Started Sifa with 112 locations of interest [2022-12-14 03:18:14,312 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 03:18:14,312 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 03:18:14,312 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 03:18:14,312 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 03:18:18,157 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 580 for LOIs [2022-12-14 03:20:07,887 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 442 for LOIs [2022-12-14 03:20:07,957 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__twothirdsfull with input of size 577 for LOIs [2022-12-14 03:20:12,694 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 107 for LOIs [2022-12-14 03:20:13,144 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection__wrappee__weight with input of size 121 for LOIs [2022-12-14 03:20:13,455 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 521 for LOIs [2022-12-14 03:20:13,677 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 76 for LOIs [2022-12-14 03:20:13,691 INFO L197 IcfgInterpreter]: Interpreting procedure existInLiftCallsInDirection with input of size 56 for LOIs [2022-12-14 03:20:13,846 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 106 for LOIs [2022-12-14 03:20:14,167 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 76 for LOIs [2022-12-14 03:20:14,172 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 50 for LOIs [2022-12-14 03:20:14,177 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 546 for LOIs [2022-12-14 03:20:16,742 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 796 for LOIs [2022-12-14 03:20:25,759 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 645 for LOIs [2022-12-14 03:20:26,423 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 03:20:37,829 WARN L233 SmtUtils]: Spent 6.47s on a formula simplification. DAG size of input: 645 DAG size of output: 516 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:20:45,088 WARN L233 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 685 DAG size of output: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:20:57,813 WARN L233 SmtUtils]: Spent 6.51s on a formula simplification. DAG size of input: 796 DAG size of output: 661 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 03:21:07,703 WARN L233 SmtUtils]: Spent 9.57s on a formula simplification. DAG size of input: 800 DAG size of output: 779 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)