./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b84cfef0f3fa5659093b8e6c2d8a82a1b18913f669c8d0a2efe9a0300cc4873 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:34:42,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:34:42,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:34:42,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:34:42,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:34:42,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:34:42,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:34:42,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:34:42,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:34:42,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:34:42,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:34:42,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:34:42,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:34:42,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:34:42,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:34:42,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:34:42,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:34:42,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:34:42,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:34:42,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:34:42,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:34:42,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:34:42,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:34:42,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:34:42,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:34:42,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:34:42,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:34:42,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:34:42,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:34:42,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:34:42,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:34:42,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:34:42,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:34:42,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:34:42,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:34:42,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:34:42,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:34:42,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:34:42,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:34:42,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:34:42,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:34:42,732 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 17:34:42,749 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:34:42,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:34:42,749 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:34:42,749 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:34:42,750 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:34:42,750 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:34:42,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:34:42,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:34:42,751 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:34:42,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:34:42,751 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:34:42,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:34:42,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:34:42,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:34:42,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:34:42,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:34:42,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:34:42,752 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:34:42,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:34:42,752 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:34:42,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:34:42,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:34:42,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:34:42,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:34:42,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:34:42,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:34:42,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:34:42,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:34:42,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:34:42,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:34:42,753 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:34:42,753 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:34:42,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:34:42,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:34:42,753 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_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b84cfef0f3fa5659093b8e6c2d8a82a1b18913f669c8d0a2efe9a0300cc4873 [2021-12-06 17:34:42,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:34:42,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:34:42,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:34:42,961 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:34:42,962 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:34:42,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c [2021-12-06 17:34:43,008 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/data/cd9e7157e/1b2e3d63426b43138f6374cc0d3d0984/FLAG207ef152a [2021-12-06 17:34:43,505 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:34:43,505 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c [2021-12-06 17:34:43,520 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/data/cd9e7157e/1b2e3d63426b43138f6374cc0d3d0984/FLAG207ef152a [2021-12-06 17:34:44,046 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/data/cd9e7157e/1b2e3d63426b43138f6374cc0d3d0984 [2021-12-06 17:34:44,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:34:44,049 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:34:44,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:34:44,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:34:44,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:34:44,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:34:44" (1/1) ... [2021-12-06 17:34:44,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e876dc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:44, skipping insertion in model container [2021-12-06 17:34:44,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:34:44" (1/1) ... [2021-12-06 17:34:44,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:34:44,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:34:44,376 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c[55974,55987] [2021-12-06 17:34:44,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:34:44,400 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:34:44,470 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c[55974,55987] [2021-12-06 17:34:44,481 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:34:44,501 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:34:44,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:44 WrapperNode [2021-12-06 17:34:44,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:34:44,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:34:44,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:34:44,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:34:44,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:44" (1/1) ... [2021-12-06 17:34:44,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:44" (1/1) ... [2021-12-06 17:34:44,570 INFO L137 Inliner]: procedures = 93, calls = 341, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 850 [2021-12-06 17:34:44,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:34:44,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:34:44,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:34:44,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:34:44,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:44" (1/1) ... [2021-12-06 17:34:44,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:44" (1/1) ... [2021-12-06 17:34:44,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:44" (1/1) ... [2021-12-06 17:34:44,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:44" (1/1) ... [2021-12-06 17:34:44,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:44" (1/1) ... [2021-12-06 17:34:44,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:44" (1/1) ... [2021-12-06 17:34:44,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:44" (1/1) ... [2021-12-06 17:34:44,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:34:44,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:34:44,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:34:44,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:34:44,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:44" (1/1) ... [2021-12-06 17:34:44,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:34:44,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:34:44,660 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:34:44,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:34:44,692 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2021-12-06 17:34:44,693 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2021-12-06 17:34:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:34:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-12-06 17:34:44,693 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-12-06 17:34:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-12-06 17:34:44,693 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-12-06 17:34:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-06 17:34:44,693 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-06 17:34:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-06 17:34:44,693 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-06 17:34:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-06 17:34:44,694 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-06 17:34:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-06 17:34:44,694 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-06 17:34:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-06 17:34:44,694 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-06 17:34:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-12-06 17:34:44,694 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-12-06 17:34:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-06 17:34:44,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-06 17:34:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-06 17:34:44,695 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-06 17:34:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-06 17:34:44,695 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-06 17:34:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-06 17:34:44,695 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-06 17:34:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-06 17:34:44,695 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-06 17:34:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-06 17:34:44,695 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-06 17:34:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2021-12-06 17:34:44,695 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2021-12-06 17:34:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-06 17:34:44,696 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-06 17:34:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-06 17:34:44,696 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-06 17:34:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-06 17:34:44,696 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-06 17:34:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:34:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-06 17:34:44,696 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-06 17:34:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-06 17:34:44,696 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-06 17:34:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-06 17:34:44,697 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-06 17:34:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:34:44,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:34:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-06 17:34:44,697 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-06 17:34:44,794 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:34:44,796 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:34:45,378 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:34:45,388 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:34:45,388 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 17:34:45,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:34:45 BoogieIcfgContainer [2021-12-06 17:34:45,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:34:45,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:34:45,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:34:45,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:34:45,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:34:44" (1/3) ... [2021-12-06 17:34:45,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13861e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:34:45, skipping insertion in model container [2021-12-06 17:34:45,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:44" (2/3) ... [2021-12-06 17:34:45,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13861e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:34:45, skipping insertion in model container [2021-12-06 17:34:45,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:34:45" (3/3) ... [2021-12-06 17:34:45,397 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product26.cil.c [2021-12-06 17:34:45,400 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:34:45,401 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:34:45,438 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:34:45,443 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 17:34:45,444 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 17:34:45,467 INFO L276 IsEmpty]: Start isEmpty. Operand has 557 states, 438 states have (on average 1.7031963470319635) internal successors, (746), 461 states have internal predecessors, (746), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 87 states have call predecessors, (94), 94 states have call successors, (94) [2021-12-06 17:34:45,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-06 17:34:45,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:45,480 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:45,480 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:45,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:45,484 INFO L85 PathProgramCache]: Analyzing trace with hash -452819156, now seen corresponding path program 1 times [2021-12-06 17:34:45,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:45,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221127241] [2021-12-06 17:34:45,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:45,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:45,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:34:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:45,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:45,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:34:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:45,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:34:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:45,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:45,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:34:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:46,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:34:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:46,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:46,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 17:34:46,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:46,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221127241] [2021-12-06 17:34:46,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221127241] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:34:46,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627836718] [2021-12-06 17:34:46,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:46,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:46,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:34:46,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:34:46,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 17:34:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:46,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 17:34:46,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:34:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 17:34:46,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:34:46,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627836718] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:46,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:34:46,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2021-12-06 17:34:46,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887216186] [2021-12-06 17:34:46,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:46,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 17:34:46,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:46,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 17:34:46,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:34:46,503 INFO L87 Difference]: Start difference. First operand has 557 states, 438 states have (on average 1.7031963470319635) internal successors, (746), 461 states have internal predecessors, (746), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 87 states have call predecessors, (94), 94 states have call successors, (94) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-06 17:34:46,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:46,553 INFO L93 Difference]: Finished difference Result 578 states and 964 transitions. [2021-12-06 17:34:46,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 17:34:46,555 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 79 [2021-12-06 17:34:46,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:46,571 INFO L225 Difference]: With dead ends: 578 [2021-12-06 17:34:46,571 INFO L226 Difference]: Without dead ends: 549 [2021-12-06 17:34:46,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:34:46,582 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:46,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:34:46,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-12-06 17:34:46,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2021-12-06 17:34:46,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 432 states have (on average 1.7013888888888888) internal successors, (735), 453 states have internal predecessors, (735), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2021-12-06 17:34:46,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 918 transitions. [2021-12-06 17:34:46,651 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 918 transitions. Word has length 79 [2021-12-06 17:34:46,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:46,652 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 918 transitions. [2021-12-06 17:34:46,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-06 17:34:46,653 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 918 transitions. [2021-12-06 17:34:46,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-06 17:34:46,658 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:46,658 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:46,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 17:34:46,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-06 17:34:46,860 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:46,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:46,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1489058496, now seen corresponding path program 1 times [2021-12-06 17:34:46,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:46,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903965573] [2021-12-06 17:34:46,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:46,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:46,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:34:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:46,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:47,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:34:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:47,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:34:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:47,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:47,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:34:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:47,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:34:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:47,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:47,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:47,199 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 17:34:47,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:47,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903965573] [2021-12-06 17:34:47,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903965573] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:34:47,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008944596] [2021-12-06 17:34:47,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:47,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:47,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:34:47,201 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:34:47,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 17:34:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:47,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:34:47,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:34:47,482 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 17:34:47,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:34:47,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008944596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:47,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:34:47,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2021-12-06 17:34:47,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789527073] [2021-12-06 17:34:47,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:47,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:34:47,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:47,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:34:47,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:34:47,485 INFO L87 Difference]: Start difference. First operand 549 states and 918 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:34:47,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:47,546 INFO L93 Difference]: Finished difference Result 1089 states and 1828 transitions. [2021-12-06 17:34:47,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:34:47,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 81 [2021-12-06 17:34:47,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:47,552 INFO L225 Difference]: With dead ends: 1089 [2021-12-06 17:34:47,558 INFO L226 Difference]: Without dead ends: 549 [2021-12-06 17:34:47,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:34:47,564 INFO L933 BasicCegarLoop]: 904 mSDtfsCounter, 14 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:47,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 2705 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:34:47,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-12-06 17:34:47,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2021-12-06 17:34:47,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 432 states have (on average 1.6990740740740742) internal successors, (734), 453 states have internal predecessors, (734), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2021-12-06 17:34:47,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 917 transitions. [2021-12-06 17:34:47,591 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 917 transitions. Word has length 81 [2021-12-06 17:34:47,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:47,592 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 917 transitions. [2021-12-06 17:34:47,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:34:47,592 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 917 transitions. [2021-12-06 17:34:47,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-06 17:34:47,595 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:47,595 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:47,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 17:34:47,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:47,797 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:47,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:47,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1789740480, now seen corresponding path program 1 times [2021-12-06 17:34:47,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:47,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339949799] [2021-12-06 17:34:47,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:47,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:47,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:34:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:48,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:48,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:34:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:48,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 17:34:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:48,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:48,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:34:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:48,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 17:34:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:48,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:48,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:48,184 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 17:34:48,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:48,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339949799] [2021-12-06 17:34:48,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339949799] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:34:48,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432703550] [2021-12-06 17:34:48,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:48,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:48,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:34:48,186 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:34:48,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 17:34:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:48,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:34:48,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:34:48,452 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 17:34:48,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:34:48,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432703550] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:48,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:34:48,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2021-12-06 17:34:48,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349222301] [2021-12-06 17:34:48,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:48,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:34:48,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:48,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:34:48,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:34:48,453 INFO L87 Difference]: Start difference. First operand 549 states and 917 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:34:48,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:48,499 INFO L93 Difference]: Finished difference Result 1089 states and 1826 transitions. [2021-12-06 17:34:48,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:34:48,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2021-12-06 17:34:48,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:48,503 INFO L225 Difference]: With dead ends: 1089 [2021-12-06 17:34:48,504 INFO L226 Difference]: Without dead ends: 549 [2021-12-06 17:34:48,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:34:48,507 INFO L933 BasicCegarLoop]: 904 mSDtfsCounter, 12 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:48,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 2705 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:34:48,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-12-06 17:34:48,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2021-12-06 17:34:48,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 432 states have (on average 1.6967592592592593) internal successors, (733), 453 states have internal predecessors, (733), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2021-12-06 17:34:48,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 916 transitions. [2021-12-06 17:34:48,529 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 916 transitions. Word has length 83 [2021-12-06 17:34:48,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:48,529 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 916 transitions. [2021-12-06 17:34:48,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:34:48,530 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 916 transitions. [2021-12-06 17:34:48,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-06 17:34:48,531 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:48,531 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:48,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 17:34:48,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-06 17:34:48,732 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:48,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:48,732 INFO L85 PathProgramCache]: Analyzing trace with hash -2051322496, now seen corresponding path program 1 times [2021-12-06 17:34:48,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:48,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124980196] [2021-12-06 17:34:48,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:48,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:48,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:34:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:48,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:48,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:34:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:48,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:34:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:48,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:48,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:34:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:48,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 17:34:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:48,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:48,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 17:34:48,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:48,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124980196] [2021-12-06 17:34:48,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124980196] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:34:48,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919754911] [2021-12-06 17:34:48,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:48,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:48,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:34:48,986 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:34:48,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 17:34:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:49,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:34:49,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:34:49,258 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 17:34:49,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:34:49,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919754911] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:49,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:34:49,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2021-12-06 17:34:49,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990354791] [2021-12-06 17:34:49,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:49,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:34:49,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:49,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:34:49,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:34:49,260 INFO L87 Difference]: Start difference. First operand 549 states and 916 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:34:49,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:49,311 INFO L93 Difference]: Finished difference Result 1096 states and 1833 transitions. [2021-12-06 17:34:49,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:34:49,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2021-12-06 17:34:49,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:49,316 INFO L225 Difference]: With dead ends: 1096 [2021-12-06 17:34:49,316 INFO L226 Difference]: Without dead ends: 558 [2021-12-06 17:34:49,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:34:49,319 INFO L933 BasicCegarLoop]: 904 mSDtfsCounter, 20 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:49,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 2705 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:34:49,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-12-06 17:34:49,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2021-12-06 17:34:49,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 440 states have (on average 1.6931818181818181) internal successors, (745), 461 states have internal predecessors, (745), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2021-12-06 17:34:49,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 928 transitions. [2021-12-06 17:34:49,347 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 928 transitions. Word has length 85 [2021-12-06 17:34:49,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:49,347 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 928 transitions. [2021-12-06 17:34:49,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:34:49,348 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 928 transitions. [2021-12-06 17:34:49,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-06 17:34:49,349 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:49,349 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:49,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 17:34:49,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:49,550 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:49,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:49,551 INFO L85 PathProgramCache]: Analyzing trace with hash -45070625, now seen corresponding path program 1 times [2021-12-06 17:34:49,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:49,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690594683] [2021-12-06 17:34:49,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:49,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:49,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:34:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:49,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:49,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 17:34:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:49,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:34:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:49,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:49,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:34:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:49,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:34:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:49,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:49,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:49,916 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 17:34:49,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:49,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690594683] [2021-12-06 17:34:49,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690594683] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:34:49,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3904687] [2021-12-06 17:34:49,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:49,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:49,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:34:49,917 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:34:49,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 17:34:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:50,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:34:50,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:34:50,165 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 17:34:50,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:34:50,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3904687] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:50,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:34:50,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2021-12-06 17:34:50,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291907904] [2021-12-06 17:34:50,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:50,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:34:50,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:50,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:34:50,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:34:50,174 INFO L87 Difference]: Start difference. First operand 558 states and 928 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:34:50,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:50,222 INFO L93 Difference]: Finished difference Result 1098 states and 1834 transitions. [2021-12-06 17:34:50,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:34:50,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 86 [2021-12-06 17:34:50,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:50,227 INFO L225 Difference]: With dead ends: 1098 [2021-12-06 17:34:50,227 INFO L226 Difference]: Without dead ends: 558 [2021-12-06 17:34:50,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:34:50,230 INFO L933 BasicCegarLoop]: 904 mSDtfsCounter, 18 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:50,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 2705 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:34:50,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-12-06 17:34:50,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2021-12-06 17:34:50,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 440 states have (on average 1.690909090909091) internal successors, (744), 461 states have internal predecessors, (744), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2021-12-06 17:34:50,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 927 transitions. [2021-12-06 17:34:50,248 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 927 transitions. Word has length 86 [2021-12-06 17:34:50,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:50,248 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 927 transitions. [2021-12-06 17:34:50,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:34:50,248 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 927 transitions. [2021-12-06 17:34:50,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-06 17:34:50,250 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:50,250 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:50,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 17:34:50,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:50,450 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:50,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:50,451 INFO L85 PathProgramCache]: Analyzing trace with hash 84493924, now seen corresponding path program 1 times [2021-12-06 17:34:50,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:50,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095094843] [2021-12-06 17:34:50,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:50,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:50,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:34:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:50,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:50,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 17:34:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:50,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:34:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:50,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:50,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:34:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:50,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 17:34:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:50,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:50,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:50,688 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 17:34:50,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:50,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095094843] [2021-12-06 17:34:50,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095094843] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:34:50,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222705277] [2021-12-06 17:34:50,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:50,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:50,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:34:50,690 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:34:50,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 17:34:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:50,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:34:50,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:34:50,947 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 17:34:50,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:34:50,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222705277] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:50,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:34:50,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2021-12-06 17:34:50,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961492709] [2021-12-06 17:34:50,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:50,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:34:50,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:50,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:34:50,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:34:50,949 INFO L87 Difference]: Start difference. First operand 558 states and 927 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:34:51,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:51,003 INFO L93 Difference]: Finished difference Result 1098 states and 1833 transitions. [2021-12-06 17:34:51,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:34:51,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 87 [2021-12-06 17:34:51,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:51,009 INFO L225 Difference]: With dead ends: 1098 [2021-12-06 17:34:51,009 INFO L226 Difference]: Without dead ends: 558 [2021-12-06 17:34:51,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:34:51,013 INFO L933 BasicCegarLoop]: 904 mSDtfsCounter, 17 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:51,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 2705 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:34:51,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-12-06 17:34:51,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2021-12-06 17:34:51,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 440 states have (on average 1.6886363636363637) internal successors, (743), 461 states have internal predecessors, (743), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2021-12-06 17:34:51,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 926 transitions. [2021-12-06 17:34:51,032 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 926 transitions. Word has length 87 [2021-12-06 17:34:51,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:51,033 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 926 transitions. [2021-12-06 17:34:51,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:34:51,033 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 926 transitions. [2021-12-06 17:34:51,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-06 17:34:51,034 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:51,034 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:51,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 17:34:51,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-06 17:34:51,235 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:51,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:51,236 INFO L85 PathProgramCache]: Analyzing trace with hash -2128673661, now seen corresponding path program 1 times [2021-12-06 17:34:51,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:51,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593510908] [2021-12-06 17:34:51,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:51,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:51,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:34:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:51,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:51,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:34:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:51,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:34:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:51,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:51,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:34:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:51,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:34:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:51,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:51,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:51,497 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 17:34:51,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:51,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593510908] [2021-12-06 17:34:51,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593510908] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:34:51,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141888311] [2021-12-06 17:34:51,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:51,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:51,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:34:51,498 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:34:51,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 17:34:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:51,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 17:34:51,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:34:51,775 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:34:51,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:34:51,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141888311] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:51,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:34:51,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-12-06 17:34:51,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424077748] [2021-12-06 17:34:51,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:51,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:34:51,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:51,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:34:51,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:34:51,777 INFO L87 Difference]: Start difference. First operand 558 states and 926 transitions. Second operand has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 17:34:51,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:51,857 INFO L93 Difference]: Finished difference Result 1117 states and 1863 transitions. [2021-12-06 17:34:51,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:34:51,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 88 [2021-12-06 17:34:51,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:51,863 INFO L225 Difference]: With dead ends: 1117 [2021-12-06 17:34:51,863 INFO L226 Difference]: Without dead ends: 581 [2021-12-06 17:34:51,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:34:51,867 INFO L933 BasicCegarLoop]: 905 mSDtfsCounter, 148 mSDsluCounter, 4417 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 5322 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:51,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 5322 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:34:51,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-12-06 17:34:51,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 577. [2021-12-06 17:34:51,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 456 states have (on average 1.6864035087719298) internal successors, (769), 479 states have internal predecessors, (769), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (93), 87 states have call predecessors, (93), 90 states have call successors, (93) [2021-12-06 17:34:51,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 957 transitions. [2021-12-06 17:34:51,895 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 957 transitions. Word has length 88 [2021-12-06 17:34:51,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:51,895 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 957 transitions. [2021-12-06 17:34:51,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 17:34:51,896 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 957 transitions. [2021-12-06 17:34:51,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-06 17:34:51,898 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:51,898 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:51,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 17:34:52,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:52,099 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:52,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:52,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1682618308, now seen corresponding path program 1 times [2021-12-06 17:34:52,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:52,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013444372] [2021-12-06 17:34:52,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:52,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:52,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:34:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:52,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:52,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:34:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:52,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:34:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:52,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:52,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:34:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:52,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:34:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:52,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:52,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:52,350 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 17:34:52,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:52,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013444372] [2021-12-06 17:34:52,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013444372] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:34:52,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096418926] [2021-12-06 17:34:52,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:52,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:52,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:34:52,352 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:34:52,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 17:34:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:52,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:34:52,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:34:52,601 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:34:52,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:34:52,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096418926] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:52,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:34:52,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2021-12-06 17:34:52,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142283876] [2021-12-06 17:34:52,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:52,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:34:52,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:52,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:34:52,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:34:52,603 INFO L87 Difference]: Start difference. First operand 577 states and 957 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:34:52,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:52,679 INFO L93 Difference]: Finished difference Result 1158 states and 1937 transitions. [2021-12-06 17:34:52,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:34:52,680 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 88 [2021-12-06 17:34:52,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:52,685 INFO L225 Difference]: With dead ends: 1158 [2021-12-06 17:34:52,685 INFO L226 Difference]: Without dead ends: 577 [2021-12-06 17:34:52,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:34:52,689 INFO L933 BasicCegarLoop]: 854 mSDtfsCounter, 135 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:52,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 2522 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:34:52,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-12-06 17:34:52,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2021-12-06 17:34:52,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 456 states have (on average 1.6754385964912282) internal successors, (764), 479 states have internal predecessors, (764), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (93), 87 states have call predecessors, (93), 90 states have call successors, (93) [2021-12-06 17:34:52,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 952 transitions. [2021-12-06 17:34:52,717 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 952 transitions. Word has length 88 [2021-12-06 17:34:52,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:52,717 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 952 transitions. [2021-12-06 17:34:52,717 INFO L471 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:34:52,718 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 952 transitions. [2021-12-06 17:34:52,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-06 17:34:52,720 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:52,720 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:52,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 17:34:52,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:52,922 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:52,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:52,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1307445388, now seen corresponding path program 1 times [2021-12-06 17:34:52,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:52,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697462685] [2021-12-06 17:34:52,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:52,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:53,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:34:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:53,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:53,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:34:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:53,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 17:34:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:53,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:53,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:34:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:53,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 17:34:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:53,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:53,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:53,286 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 17:34:53,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:53,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697462685] [2021-12-06 17:34:53,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697462685] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:34:53,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663992017] [2021-12-06 17:34:53,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:53,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:53,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:34:53,288 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:34:53,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 17:34:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:53,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:34:53,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:34:53,536 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:34:53,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:34:53,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663992017] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:53,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:34:53,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2021-12-06 17:34:53,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614789657] [2021-12-06 17:34:53,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:53,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:34:53,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:53,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:34:53,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:34:53,538 INFO L87 Difference]: Start difference. First operand 577 states and 952 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:34:53,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:53,604 INFO L93 Difference]: Finished difference Result 1158 states and 1927 transitions. [2021-12-06 17:34:53,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:34:53,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2021-12-06 17:34:53,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:53,610 INFO L225 Difference]: With dead ends: 1158 [2021-12-06 17:34:53,610 INFO L226 Difference]: Without dead ends: 577 [2021-12-06 17:34:53,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:34:53,612 INFO L933 BasicCegarLoop]: 854 mSDtfsCounter, 129 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:53,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 2522 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:34:53,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-12-06 17:34:53,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2021-12-06 17:34:53,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 456 states have (on average 1.6644736842105263) internal successors, (759), 479 states have internal predecessors, (759), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (93), 87 states have call predecessors, (93), 90 states have call successors, (93) [2021-12-06 17:34:53,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 947 transitions. [2021-12-06 17:34:53,638 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 947 transitions. Word has length 90 [2021-12-06 17:34:53,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:53,639 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 947 transitions. [2021-12-06 17:34:53,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:34:53,639 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 947 transitions. [2021-12-06 17:34:53,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-06 17:34:53,641 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:53,642 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:53,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 17:34:53,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:53,842 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:53,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:53,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1155388188, now seen corresponding path program 1 times [2021-12-06 17:34:53,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:53,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476821082] [2021-12-06 17:34:53,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:53,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:53,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:34:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:53,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:53,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:34:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:53,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:34:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:53,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:53,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:34:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:54,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 17:34:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:54,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:54,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:54,062 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 17:34:54,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:54,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476821082] [2021-12-06 17:34:54,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476821082] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:34:54,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130528916] [2021-12-06 17:34:54,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:54,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:54,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:34:54,064 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:34:54,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 17:34:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:54,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:34:54,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:34:54,300 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:34:54,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:34:54,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130528916] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:54,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:34:54,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2021-12-06 17:34:54,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256086023] [2021-12-06 17:34:54,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:54,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:34:54,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:54,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:34:54,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:34:54,302 INFO L87 Difference]: Start difference. First operand 577 states and 947 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:34:54,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:54,387 INFO L93 Difference]: Finished difference Result 1194 states and 1975 transitions. [2021-12-06 17:34:54,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:34:54,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 92 [2021-12-06 17:34:54,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:54,391 INFO L225 Difference]: With dead ends: 1194 [2021-12-06 17:34:54,391 INFO L226 Difference]: Without dead ends: 643 [2021-12-06 17:34:54,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:34:54,393 INFO L933 BasicCegarLoop]: 864 mSDtfsCounter, 179 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 2532 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:54,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 2532 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:34:54,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-12-06 17:34:54,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 628. [2021-12-06 17:34:54,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 506 states have (on average 1.66798418972332) internal successors, (844), 529 states have internal predecessors, (844), 95 states have call successors, (95), 25 states have call predecessors, (95), 26 states have return successors, (92), 87 states have call predecessors, (92), 90 states have call successors, (92) [2021-12-06 17:34:54,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1031 transitions. [2021-12-06 17:34:54,419 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1031 transitions. Word has length 92 [2021-12-06 17:34:54,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:54,420 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 1031 transitions. [2021-12-06 17:34:54,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:34:54,420 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1031 transitions. [2021-12-06 17:34:54,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 17:34:54,422 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:54,422 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:54,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-06 17:34:54,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 17:34:54,624 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:54,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:54,625 INFO L85 PathProgramCache]: Analyzing trace with hash -2004653834, now seen corresponding path program 1 times [2021-12-06 17:34:54,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:54,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827082215] [2021-12-06 17:34:54,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:54,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:54,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:34:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:54,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:54,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:34:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:54,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:34:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:54,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:54,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:34:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:54,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:34:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:54,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:54,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:54,895 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 17:34:54,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:54,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827082215] [2021-12-06 17:34:54,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827082215] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:34:54,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82788155] [2021-12-06 17:34:54,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:54,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:54,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:34:54,896 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:34:54,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 17:34:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:55,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 17:34:55,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:34:55,171 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:34:55,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:34:55,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82788155] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:55,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:34:55,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 13 [2021-12-06 17:34:55,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107291675] [2021-12-06 17:34:55,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:55,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:34:55,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:55,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:34:55,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:34:55,173 INFO L87 Difference]: Start difference. First operand 628 states and 1031 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 17:34:55,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:55,263 INFO L93 Difference]: Finished difference Result 1186 states and 1955 transitions. [2021-12-06 17:34:55,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:34:55,263 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2021-12-06 17:34:55,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:55,266 INFO L225 Difference]: With dead ends: 1186 [2021-12-06 17:34:55,266 INFO L226 Difference]: Without dead ends: 650 [2021-12-06 17:34:55,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:34:55,269 INFO L933 BasicCegarLoop]: 885 mSDtfsCounter, 177 mSDsluCounter, 5208 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6093 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:55,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 6093 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:34:55,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2021-12-06 17:34:55,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 628. [2021-12-06 17:34:55,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 506 states have (on average 1.66798418972332) internal successors, (844), 529 states have internal predecessors, (844), 95 states have call successors, (95), 25 states have call predecessors, (95), 26 states have return successors, (92), 87 states have call predecessors, (92), 90 states have call successors, (92) [2021-12-06 17:34:55,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1031 transitions. [2021-12-06 17:34:55,286 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1031 transitions. Word has length 93 [2021-12-06 17:34:55,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:55,286 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 1031 transitions. [2021-12-06 17:34:55,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 17:34:55,286 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1031 transitions. [2021-12-06 17:34:55,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 17:34:55,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:55,288 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:55,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 17:34:55,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 17:34:55,489 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:55,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:55,490 INFO L85 PathProgramCache]: Analyzing trace with hash -138861034, now seen corresponding path program 1 times [2021-12-06 17:34:55,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:55,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348938885] [2021-12-06 17:34:55,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:55,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:55,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:34:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:55,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:55,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:34:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:55,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:34:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:55,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:55,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:34:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:55,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:34:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:55,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:55,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:55,740 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 17:34:55,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:55,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348938885] [2021-12-06 17:34:55,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348938885] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:34:55,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677766203] [2021-12-06 17:34:55,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:55,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:55,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:34:55,742 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:34:55,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 17:34:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:55,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:34:55,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:34:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:34:55,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:34:55,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677766203] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:55,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:34:55,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2021-12-06 17:34:55,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943582626] [2021-12-06 17:34:55,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:55,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:34:55,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:55,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:34:55,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:34:55,965 INFO L87 Difference]: Start difference. First operand 628 states and 1031 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:34:56,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:56,034 INFO L93 Difference]: Finished difference Result 1194 states and 1973 transitions. [2021-12-06 17:34:56,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:34:56,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 93 [2021-12-06 17:34:56,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:56,038 INFO L225 Difference]: With dead ends: 1194 [2021-12-06 17:34:56,038 INFO L226 Difference]: Without dead ends: 628 [2021-12-06 17:34:56,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:34:56,040 INFO L933 BasicCegarLoop]: 864 mSDtfsCounter, 173 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2532 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:56,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 2532 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:34:56,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-12-06 17:34:56,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2021-12-06 17:34:56,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 506 states have (on average 1.658102766798419) internal successors, (839), 529 states have internal predecessors, (839), 95 states have call successors, (95), 25 states have call predecessors, (95), 26 states have return successors, (92), 87 states have call predecessors, (92), 90 states have call successors, (92) [2021-12-06 17:34:56,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1026 transitions. [2021-12-06 17:34:56,055 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1026 transitions. Word has length 93 [2021-12-06 17:34:56,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:56,055 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 1026 transitions. [2021-12-06 17:34:56,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:34:56,055 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1026 transitions. [2021-12-06 17:34:56,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 17:34:56,057 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:56,057 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:56,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-06 17:34:56,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 17:34:56,258 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:56,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:56,259 INFO L85 PathProgramCache]: Analyzing trace with hash -895838635, now seen corresponding path program 1 times [2021-12-06 17:34:56,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:56,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762180298] [2021-12-06 17:34:56,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:56,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:56,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:34:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:56,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:56,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:34:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:56,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:34:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:56,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:56,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:34:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:56,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:34:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:56,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:56,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:56,500 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 17:34:56,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:56,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762180298] [2021-12-06 17:34:56,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762180298] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:34:56,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684535784] [2021-12-06 17:34:56,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:56,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:56,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:34:56,501 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:34:56,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 17:34:56,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:56,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 17:34:56,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:34:56,751 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 17:34:56,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:34:56,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684535784] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:56,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:34:56,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2021-12-06 17:34:56,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55242613] [2021-12-06 17:34:56,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:56,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:34:56,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:56,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:34:56,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:34:56,752 INFO L87 Difference]: Start difference. First operand 628 states and 1026 transitions. Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 17:34:56,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:56,801 INFO L93 Difference]: Finished difference Result 1121 states and 1847 transitions. [2021-12-06 17:34:56,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:34:56,802 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2021-12-06 17:34:56,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:56,806 INFO L225 Difference]: With dead ends: 1121 [2021-12-06 17:34:56,806 INFO L226 Difference]: Without dead ends: 652 [2021-12-06 17:34:56,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:34:56,809 INFO L933 BasicCegarLoop]: 897 mSDtfsCounter, 134 mSDsluCounter, 4384 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5281 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:56,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 5281 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:34:56,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-12-06 17:34:56,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 647. [2021-12-06 17:34:56,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 522 states have (on average 1.657088122605364) internal successors, (865), 547 states have internal predecessors, (865), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2021-12-06 17:34:56,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1056 transitions. [2021-12-06 17:34:56,831 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1056 transitions. Word has length 93 [2021-12-06 17:34:56,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:56,832 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 1056 transitions. [2021-12-06 17:34:56,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 17:34:56,832 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1056 transitions. [2021-12-06 17:34:56,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 17:34:56,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:56,834 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:56,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 17:34:57,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 17:34:57,035 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:57,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:57,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1877365016, now seen corresponding path program 1 times [2021-12-06 17:34:57,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:57,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815765291] [2021-12-06 17:34:57,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:57,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:57,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:34:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:57,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:57,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:34:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:57,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:34:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:57,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:57,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:34:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:57,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:34:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:57,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:57,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:57,261 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 17:34:57,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:57,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815765291] [2021-12-06 17:34:57,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815765291] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:34:57,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373248608] [2021-12-06 17:34:57,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:57,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:57,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:34:57,263 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:34:57,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 17:34:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:57,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 17:34:57,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:34:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 17:34:57,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:34:57,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373248608] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:57,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:34:57,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-12-06 17:34:57,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583584147] [2021-12-06 17:34:57,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:57,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:34:57,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:57,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:34:57,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:34:57,522 INFO L87 Difference]: Start difference. First operand 647 states and 1056 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 17:34:57,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:57,576 INFO L93 Difference]: Finished difference Result 1151 states and 1898 transitions. [2021-12-06 17:34:57,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:34:57,576 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2021-12-06 17:34:57,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:57,580 INFO L225 Difference]: With dead ends: 1151 [2021-12-06 17:34:57,580 INFO L226 Difference]: Without dead ends: 682 [2021-12-06 17:34:57,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:34:57,582 INFO L933 BasicCegarLoop]: 897 mSDtfsCounter, 143 mSDsluCounter, 4374 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5271 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:57,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 5271 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:34:57,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2021-12-06 17:34:57,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 647. [2021-12-06 17:34:57,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 522 states have (on average 1.657088122605364) internal successors, (865), 547 states have internal predecessors, (865), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2021-12-06 17:34:57,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1056 transitions. [2021-12-06 17:34:57,598 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1056 transitions. Word has length 94 [2021-12-06 17:34:57,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:57,598 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 1056 transitions. [2021-12-06 17:34:57,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 17:34:57,599 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1056 transitions. [2021-12-06 17:34:57,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 17:34:57,600 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:57,600 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:57,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 17:34:57,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:57,801 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:57,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:57,801 INFO L85 PathProgramCache]: Analyzing trace with hash -278934120, now seen corresponding path program 1 times [2021-12-06 17:34:57,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:57,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217947841] [2021-12-06 17:34:57,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:57,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:57,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:34:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:57,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:57,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:34:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:57,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:34:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:57,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:57,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:34:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:57,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:34:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:57,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:58,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:58,002 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 17:34:58,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:58,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217947841] [2021-12-06 17:34:58,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217947841] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:34:58,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786643497] [2021-12-06 17:34:58,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:58,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:58,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:34:58,003 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:34:58,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 17:34:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:58,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 17:34:58,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:34:58,256 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 17:34:58,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:34:58,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786643497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:58,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:34:58,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2021-12-06 17:34:58,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194553762] [2021-12-06 17:34:58,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:58,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:34:58,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:58,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:34:58,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:34:58,257 INFO L87 Difference]: Start difference. First operand 647 states and 1056 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 17:34:58,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:58,331 INFO L93 Difference]: Finished difference Result 1136 states and 1872 transitions. [2021-12-06 17:34:58,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:34:58,331 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2021-12-06 17:34:58,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:58,335 INFO L225 Difference]: With dead ends: 1136 [2021-12-06 17:34:58,335 INFO L226 Difference]: Without dead ends: 667 [2021-12-06 17:34:58,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:34:58,337 INFO L933 BasicCegarLoop]: 887 mSDtfsCounter, 177 mSDsluCounter, 5214 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6101 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:58,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 6101 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:34:58,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-12-06 17:34:58,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 647. [2021-12-06 17:34:58,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 522 states have (on average 1.657088122605364) internal successors, (865), 547 states have internal predecessors, (865), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2021-12-06 17:34:58,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1056 transitions. [2021-12-06 17:34:58,352 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1056 transitions. Word has length 94 [2021-12-06 17:34:58,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:58,352 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 1056 transitions. [2021-12-06 17:34:58,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 17:34:58,352 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1056 transitions. [2021-12-06 17:34:58,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 17:34:58,354 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:58,354 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:58,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 17:34:58,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 17:34:58,555 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:58,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:58,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1670239980, now seen corresponding path program 1 times [2021-12-06 17:34:58,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:58,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824308321] [2021-12-06 17:34:58,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:58,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:58,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:34:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:58,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:58,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:34:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:58,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:34:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:58,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:58,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 17:34:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:58,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:34:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:58,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:58,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:58,750 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 17:34:58,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:58,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824308321] [2021-12-06 17:34:58,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824308321] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:34:58,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374838451] [2021-12-06 17:34:58,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:58,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:58,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:34:58,751 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:34:58,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 17:34:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:58,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:34:58,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:34:58,973 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 17:34:58,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:34:58,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374838451] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:58,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:34:58,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2021-12-06 17:34:58,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779133491] [2021-12-06 17:34:58,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:58,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:34:58,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:58,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:34:58,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:34:58,975 INFO L87 Difference]: Start difference. First operand 647 states and 1056 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:34:59,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:59,003 INFO L93 Difference]: Finished difference Result 1188 states and 1957 transitions. [2021-12-06 17:34:59,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:34:59,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 94 [2021-12-06 17:34:59,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:59,006 INFO L225 Difference]: With dead ends: 1188 [2021-12-06 17:34:59,006 INFO L226 Difference]: Without dead ends: 647 [2021-12-06 17:34:59,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:34:59,009 INFO L933 BasicCegarLoop]: 893 mSDtfsCounter, 23 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:59,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 2674 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:34:59,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2021-12-06 17:34:59,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 647. [2021-12-06 17:34:59,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 522 states have (on average 1.6494252873563218) internal successors, (861), 547 states have internal predecessors, (861), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2021-12-06 17:34:59,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1052 transitions. [2021-12-06 17:34:59,023 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1052 transitions. Word has length 94 [2021-12-06 17:34:59,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:59,023 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 1052 transitions. [2021-12-06 17:34:59,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:34:59,023 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1052 transitions. [2021-12-06 17:34:59,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-06 17:34:59,024 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:59,024 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:59,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 17:34:59,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:59,226 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:34:59,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:34:59,227 INFO L85 PathProgramCache]: Analyzing trace with hash -64886323, now seen corresponding path program 1 times [2021-12-06 17:34:59,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:34:59,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116859006] [2021-12-06 17:34:59,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:59,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:34:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:59,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:34:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:59,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:59,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:34:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:59,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:34:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:59,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:59,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:34:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:59,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:34:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:59,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:59,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:34:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 17:34:59,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:34:59,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116859006] [2021-12-06 17:34:59,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116859006] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:34:59,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75656637] [2021-12-06 17:34:59,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:34:59,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:34:59,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:34:59,472 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:34:59,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 17:34:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:34:59,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 17:34:59,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:34:59,721 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 17:34:59,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:34:59,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75656637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:34:59,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:34:59,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2021-12-06 17:34:59,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695374826] [2021-12-06 17:34:59,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:34:59,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:34:59,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:34:59,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:34:59,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:34:59,723 INFO L87 Difference]: Start difference. First operand 647 states and 1052 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 17:34:59,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:59,800 INFO L93 Difference]: Finished difference Result 1136 states and 1869 transitions. [2021-12-06 17:34:59,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:34:59,801 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 95 [2021-12-06 17:34:59,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:34:59,804 INFO L225 Difference]: With dead ends: 1136 [2021-12-06 17:34:59,804 INFO L226 Difference]: Without dead ends: 667 [2021-12-06 17:34:59,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:34:59,807 INFO L933 BasicCegarLoop]: 881 mSDtfsCounter, 185 mSDsluCounter, 5176 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 6057 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:34:59,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 6057 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:34:59,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-12-06 17:34:59,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 647. [2021-12-06 17:34:59,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 522 states have (on average 1.6494252873563218) internal successors, (861), 547 states have internal predecessors, (861), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2021-12-06 17:34:59,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1052 transitions. [2021-12-06 17:34:59,820 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1052 transitions. Word has length 95 [2021-12-06 17:34:59,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:34:59,820 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 1052 transitions. [2021-12-06 17:34:59,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 17:34:59,821 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1052 transitions. [2021-12-06 17:34:59,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-06 17:34:59,822 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:34:59,822 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:34:59,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-06 17:35:00,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 17:35:00,024 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:35:00,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:35:00,025 INFO L85 PathProgramCache]: Analyzing trace with hash -370510403, now seen corresponding path program 1 times [2021-12-06 17:35:00,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:35:00,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155921874] [2021-12-06 17:35:00,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:00,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:35:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:00,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:00,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:00,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:00,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:35:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:00,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:00,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:35:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:00,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 17:35:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:00,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:00,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:00,265 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 17:35:00,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:35:00,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155921874] [2021-12-06 17:35:00,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155921874] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:35:00,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094627299] [2021-12-06 17:35:00,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:00,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:35:00,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:35:00,266 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:35:00,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 17:35:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:00,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 17:35:00,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:35:00,495 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 17:35:00,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:35:00,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094627299] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:35:00,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:35:00,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-12-06 17:35:00,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140724587] [2021-12-06 17:35:00,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:35:00,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:35:00,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:35:00,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:35:00,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:35:00,496 INFO L87 Difference]: Start difference. First operand 647 states and 1052 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:35:00,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:35:00,529 INFO L93 Difference]: Finished difference Result 1244 states and 2039 transitions. [2021-12-06 17:35:00,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:35:00,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 96 [2021-12-06 17:35:00,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:35:00,533 INFO L225 Difference]: With dead ends: 1244 [2021-12-06 17:35:00,533 INFO L226 Difference]: Without dead ends: 683 [2021-12-06 17:35:00,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:35:00,535 INFO L933 BasicCegarLoop]: 885 mSDtfsCounter, 38 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2650 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:35:00,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 2650 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:35:00,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2021-12-06 17:35:00,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 671. [2021-12-06 17:35:00,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 546 states have (on average 1.6282051282051282) internal successors, (889), 571 states have internal predecessors, (889), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2021-12-06 17:35:00,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1080 transitions. [2021-12-06 17:35:00,550 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1080 transitions. Word has length 96 [2021-12-06 17:35:00,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:35:00,551 INFO L470 AbstractCegarLoop]: Abstraction has 671 states and 1080 transitions. [2021-12-06 17:35:00,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:35:00,551 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1080 transitions. [2021-12-06 17:35:00,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-06 17:35:00,552 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:35:00,552 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:35:00,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-06 17:35:00,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 17:35:00,753 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:35:00,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:35:00,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1622446553, now seen corresponding path program 1 times [2021-12-06 17:35:00,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:35:00,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135556828] [2021-12-06 17:35:00,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:00,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:35:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:00,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:00,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:00,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:00,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:35:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:00,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:00,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:00,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 17:35:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:00,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:00,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:00,978 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 17:35:00,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:35:00,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135556828] [2021-12-06 17:35:00,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135556828] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:35:00,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021212629] [2021-12-06 17:35:00,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:00,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:35:00,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:35:00,980 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:35:00,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 17:35:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:01,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 17:35:01,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:35:01,358 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:35:01,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:35:01,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021212629] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:35:01,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:35:01,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2021-12-06 17:35:01,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493808125] [2021-12-06 17:35:01,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:35:01,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:35:01,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:35:01,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:35:01,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:35:01,360 INFO L87 Difference]: Start difference. First operand 671 states and 1080 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:35:02,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:35:02,478 INFO L93 Difference]: Finished difference Result 1733 states and 2875 transitions. [2021-12-06 17:35:02,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:35:02,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 96 [2021-12-06 17:35:02,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:35:02,485 INFO L225 Difference]: With dead ends: 1733 [2021-12-06 17:35:02,485 INFO L226 Difference]: Without dead ends: 1269 [2021-12-06 17:35:02,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:35:02,487 INFO L933 BasicCegarLoop]: 918 mSDtfsCounter, 2192 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2299 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:35:02,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2299 Valid, 1644 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 17:35:02,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2021-12-06 17:35:02,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1153. [2021-12-06 17:35:02,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 929 states have (on average 1.6566200215285254) internal successors, (1539), 963 states have internal predecessors, (1539), 179 states have call successors, (179), 39 states have call predecessors, (179), 44 states have return successors, (185), 163 states have call predecessors, (185), 174 states have call successors, (185) [2021-12-06 17:35:02,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1903 transitions. [2021-12-06 17:35:02,522 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1903 transitions. Word has length 96 [2021-12-06 17:35:02,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:35:02,522 INFO L470 AbstractCegarLoop]: Abstraction has 1153 states and 1903 transitions. [2021-12-06 17:35:02,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:35:02,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1903 transitions. [2021-12-06 17:35:02,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-06 17:35:02,525 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:35:02,525 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:35:02,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-06 17:35:02,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:35:02,726 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:35:02,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:35:02,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1145672278, now seen corresponding path program 1 times [2021-12-06 17:35:02,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:35:02,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456271466] [2021-12-06 17:35:02,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:02,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:35:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:02,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:02,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:02,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:02,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:35:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:02,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:02,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:02,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 17:35:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:02,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:02,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:03,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:35:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:03,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:03,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 17:35:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:03,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:35:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 17:35:03,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:35:03,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456271466] [2021-12-06 17:35:03,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456271466] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:35:03,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029607607] [2021-12-06 17:35:03,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:03,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:35:03,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:35:03,075 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:35:03,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-06 17:35:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:03,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 2022 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 17:35:03,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:35:03,383 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:35:03,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:35:03,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029607607] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:35:03,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:35:03,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2021-12-06 17:35:03,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225616847] [2021-12-06 17:35:03,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:35:03,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:35:03,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:35:03,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:35:03,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:35:03,385 INFO L87 Difference]: Start difference. First operand 1153 states and 1903 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 17:35:04,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:35:04,829 INFO L93 Difference]: Finished difference Result 2974 states and 4977 transitions. [2021-12-06 17:35:04,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 17:35:04,830 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 124 [2021-12-06 17:35:04,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:35:04,842 INFO L225 Difference]: With dead ends: 2974 [2021-12-06 17:35:04,842 INFO L226 Difference]: Without dead ends: 2026 [2021-12-06 17:35:04,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2021-12-06 17:35:04,847 INFO L933 BasicCegarLoop]: 1159 mSDtfsCounter, 1687 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 4234 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1762 SdHoareTripleChecker+Valid, 2945 SdHoareTripleChecker+Invalid, 4553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 4234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:35:04,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1762 Valid, 2945 Invalid, 4553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 4234 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 17:35:04,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2021-12-06 17:35:04,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 1856. [2021-12-06 17:35:04,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1480 states have (on average 1.6472972972972972) internal successors, (2438), 1524 states have internal predecessors, (2438), 301 states have call successors, (301), 58 states have call predecessors, (301), 74 states have return successors, (337), 284 states have call predecessors, (337), 296 states have call successors, (337) [2021-12-06 17:35:04,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 3076 transitions. [2021-12-06 17:35:04,910 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 3076 transitions. Word has length 124 [2021-12-06 17:35:04,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:35:04,911 INFO L470 AbstractCegarLoop]: Abstraction has 1856 states and 3076 transitions. [2021-12-06 17:35:04,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 17:35:04,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 3076 transitions. [2021-12-06 17:35:04,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-06 17:35:04,913 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:35:04,914 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:35:04,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-12-06 17:35:05,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:35:05,115 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:35:05,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:35:05,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1108611874, now seen corresponding path program 1 times [2021-12-06 17:35:05,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:35:05,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263738117] [2021-12-06 17:35:05,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:05,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:35:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:05,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:05,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:05,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:05,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:35:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:05,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:05,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:05,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 17:35:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:05,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:05,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:05,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:05,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:05,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 17:35:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:05,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:35:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 17:35:05,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:35:05,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263738117] [2021-12-06 17:35:05,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263738117] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:35:05,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936427717] [2021-12-06 17:35:05,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:05,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:35:05,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:35:05,442 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:35:05,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-06 17:35:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:05,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 2022 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 17:35:05,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:35:05,718 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:35:05,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:35:05,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936427717] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:35:05,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:35:05,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-12-06 17:35:05,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746172983] [2021-12-06 17:35:05,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:35:05,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:35:05,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:35:05,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:35:05,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:35:05,719 INFO L87 Difference]: Start difference. First operand 1856 states and 3076 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:35:05,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:35:05,827 INFO L93 Difference]: Finished difference Result 3715 states and 6240 transitions. [2021-12-06 17:35:05,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:35:05,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2021-12-06 17:35:05,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:35:05,838 INFO L225 Difference]: With dead ends: 3715 [2021-12-06 17:35:05,838 INFO L226 Difference]: Without dead ends: 2067 [2021-12-06 17:35:05,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:35:05,844 INFO L933 BasicCegarLoop]: 952 mSDtfsCounter, 139 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 2757 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:35:05,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 2757 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:35:05,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2067 states. [2021-12-06 17:35:05,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2067 to 1860. [2021-12-06 17:35:05,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1860 states, 1484 states have (on average 1.6455525606469004) internal successors, (2442), 1528 states have internal predecessors, (2442), 301 states have call successors, (301), 58 states have call predecessors, (301), 74 states have return successors, (337), 284 states have call predecessors, (337), 296 states have call successors, (337) [2021-12-06 17:35:05,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1860 states to 1860 states and 3080 transitions. [2021-12-06 17:35:05,905 INFO L78 Accepts]: Start accepts. Automaton has 1860 states and 3080 transitions. Word has length 125 [2021-12-06 17:35:05,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:35:05,905 INFO L470 AbstractCegarLoop]: Abstraction has 1860 states and 3080 transitions. [2021-12-06 17:35:05,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:35:05,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1860 states and 3080 transitions. [2021-12-06 17:35:05,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-06 17:35:05,908 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:35:05,908 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:35:05,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-12-06 17:35:06,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-06 17:35:06,110 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:35:06,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:35:06,111 INFO L85 PathProgramCache]: Analyzing trace with hash 320066416, now seen corresponding path program 1 times [2021-12-06 17:35:06,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:35:06,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586832665] [2021-12-06 17:35:06,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:06,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:35:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:06,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:06,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:06,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:06,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:35:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:06,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:06,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:06,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 17:35:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:06,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:06,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:06,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:06,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:06,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:35:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:06,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:35:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:06,434 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 17:35:06,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:35:06,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586832665] [2021-12-06 17:35:06,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586832665] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:35:06,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699332243] [2021-12-06 17:35:06,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:06,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:35:06,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:35:06,435 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:35:06,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-06 17:35:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:06,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 2039 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 17:35:06,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:35:06,811 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 17:35:06,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:35:06,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699332243] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:35:06,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:35:06,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2021-12-06 17:35:06,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122465778] [2021-12-06 17:35:06,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:35:06,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:35:06,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:35:06,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:35:06,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:35:06,813 INFO L87 Difference]: Start difference. First operand 1860 states and 3080 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 17:35:08,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:35:08,837 INFO L93 Difference]: Finished difference Result 6007 states and 10256 transitions. [2021-12-06 17:35:08,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 17:35:08,838 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 128 [2021-12-06 17:35:08,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:35:08,859 INFO L225 Difference]: With dead ends: 6007 [2021-12-06 17:35:08,859 INFO L226 Difference]: Without dead ends: 4354 [2021-12-06 17:35:08,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-12-06 17:35:08,867 INFO L933 BasicCegarLoop]: 1710 mSDtfsCounter, 3212 mSDsluCounter, 3302 mSDsCounter, 0 mSdLazyCounter, 5122 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3332 SdHoareTripleChecker+Valid, 5012 SdHoareTripleChecker+Invalid, 6000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 5122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:35:08,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3332 Valid, 5012 Invalid, 6000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 5122 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-06 17:35:08,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4354 states. [2021-12-06 17:35:09,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4354 to 4019. [2021-12-06 17:35:09,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4019 states, 3168 states have (on average 1.6410984848484849) internal successors, (5199), 3259 states have internal predecessors, (5199), 686 states have call successors, (686), 112 states have call predecessors, (686), 164 states have return successors, (890), 674 states have call predecessors, (890), 681 states have call successors, (890) [2021-12-06 17:35:09,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4019 states to 4019 states and 6775 transitions. [2021-12-06 17:35:09,030 INFO L78 Accepts]: Start accepts. Automaton has 4019 states and 6775 transitions. Word has length 128 [2021-12-06 17:35:09,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:35:09,030 INFO L470 AbstractCegarLoop]: Abstraction has 4019 states and 6775 transitions. [2021-12-06 17:35:09,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 17:35:09,030 INFO L276 IsEmpty]: Start isEmpty. Operand 4019 states and 6775 transitions. [2021-12-06 17:35:09,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-06 17:35:09,035 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:35:09,036 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:35:09,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-12-06 17:35:09,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-06 17:35:09,236 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:35:09,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:35:09,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1950540149, now seen corresponding path program 1 times [2021-12-06 17:35:09,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:35:09,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684652999] [2021-12-06 17:35:09,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:09,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:35:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:09,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:09,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:09,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:09,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:35:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:09,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:09,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:09,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 17:35:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:09,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:09,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:09,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:09,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:09,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 17:35:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:09,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 17:35:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:09,624 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 17:35:09,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:35:09,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684652999] [2021-12-06 17:35:09,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684652999] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:35:09,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016436949] [2021-12-06 17:35:09,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:09,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:35:09,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:35:09,625 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:35:09,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-06 17:35:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:09,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 2040 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 17:35:09,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:35:09,895 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:35:09,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:35:09,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016436949] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:35:09,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:35:09,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2021-12-06 17:35:09,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320036522] [2021-12-06 17:35:09,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:35:09,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:35:09,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:35:09,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:35:09,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:35:09,896 INFO L87 Difference]: Start difference. First operand 4019 states and 6775 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 17:35:10,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:35:10,223 INFO L93 Difference]: Finished difference Result 11225 states and 19415 transitions. [2021-12-06 17:35:10,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:35:10,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 129 [2021-12-06 17:35:10,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:35:10,259 INFO L225 Difference]: With dead ends: 11225 [2021-12-06 17:35:10,259 INFO L226 Difference]: Without dead ends: 7528 [2021-12-06 17:35:10,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:35:10,282 INFO L933 BasicCegarLoop]: 1399 mSDtfsCounter, 752 mSDsluCounter, 3520 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 4919 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:35:10,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 4919 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:35:10,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7528 states. [2021-12-06 17:35:10,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7528 to 7503. [2021-12-06 17:35:10,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7503 states, 5880 states have (on average 1.631122448979592) internal successors, (9591), 6052 states have internal predecessors, (9591), 1295 states have call successors, (1295), 228 states have call predecessors, (1295), 327 states have return successors, (1910), 1276 states have call predecessors, (1910), 1290 states have call successors, (1910) [2021-12-06 17:35:10,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7503 states to 7503 states and 12796 transitions. [2021-12-06 17:35:10,577 INFO L78 Accepts]: Start accepts. Automaton has 7503 states and 12796 transitions. Word has length 129 [2021-12-06 17:35:10,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:35:10,578 INFO L470 AbstractCegarLoop]: Abstraction has 7503 states and 12796 transitions. [2021-12-06 17:35:10,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 17:35:10,578 INFO L276 IsEmpty]: Start isEmpty. Operand 7503 states and 12796 transitions. [2021-12-06 17:35:10,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-06 17:35:10,591 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:35:10,592 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:35:10,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-06 17:35:10,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:35:10,792 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:35:10,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:35:10,793 INFO L85 PathProgramCache]: Analyzing trace with hash 345288400, now seen corresponding path program 1 times [2021-12-06 17:35:10,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:35:10,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530475707] [2021-12-06 17:35:10,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:10,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:35:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:10,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:10,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:10,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:10,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:35:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:10,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:10,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:35:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:11,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 17:35:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:11,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:11,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:11,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:11,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:11,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:35:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:11,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:35:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:11,157 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 17:35:11,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:35:11,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530475707] [2021-12-06 17:35:11,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530475707] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:35:11,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470091740] [2021-12-06 17:35:11,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:11,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:35:11,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:35:11,159 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:35:11,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-06 17:35:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:11,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 2040 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 17:35:11,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:35:11,461 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 17:35:11,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:35:11,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470091740] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:35:11,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:35:11,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2021-12-06 17:35:11,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217464489] [2021-12-06 17:35:11,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:35:11,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:35:11,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:35:11,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:35:11,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:35:11,463 INFO L87 Difference]: Start difference. First operand 7503 states and 12796 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:35:11,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:35:11,679 INFO L93 Difference]: Finished difference Result 14862 states and 25394 transitions. [2021-12-06 17:35:11,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:35:11,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 131 [2021-12-06 17:35:11,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:35:11,717 INFO L225 Difference]: With dead ends: 14862 [2021-12-06 17:35:11,718 INFO L226 Difference]: Without dead ends: 7557 [2021-12-06 17:35:11,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:35:11,739 INFO L933 BasicCegarLoop]: 884 mSDtfsCounter, 39 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2647 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:35:11,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 2647 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:35:11,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7557 states. [2021-12-06 17:35:11,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7557 to 7524. [2021-12-06 17:35:11,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7524 states, 5900 states have (on average 1.6310169491525424) internal successors, (9623), 6073 states have internal predecessors, (9623), 1295 states have call successors, (1295), 228 states have call predecessors, (1295), 328 states have return successors, (1911), 1276 states have call predecessors, (1911), 1290 states have call successors, (1911) [2021-12-06 17:35:12,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7524 states to 7524 states and 12829 transitions. [2021-12-06 17:35:12,007 INFO L78 Accepts]: Start accepts. Automaton has 7524 states and 12829 transitions. Word has length 131 [2021-12-06 17:35:12,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:35:12,007 INFO L470 AbstractCegarLoop]: Abstraction has 7524 states and 12829 transitions. [2021-12-06 17:35:12,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:35:12,008 INFO L276 IsEmpty]: Start isEmpty. Operand 7524 states and 12829 transitions. [2021-12-06 17:35:12,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-06 17:35:12,017 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:35:12,017 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:35:12,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-12-06 17:35:12,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:35:12,217 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:35:12,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:35:12,218 INFO L85 PathProgramCache]: Analyzing trace with hash -346895294, now seen corresponding path program 1 times [2021-12-06 17:35:12,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:35:12,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302919823] [2021-12-06 17:35:12,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:12,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:35:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:12,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:12,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:12,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:12,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:35:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:12,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:12,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:35:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:12,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:35:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:12,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:12,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:12,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:12,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:12,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:35:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:12,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:35:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:12,559 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 17:35:12,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:35:12,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302919823] [2021-12-06 17:35:12,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302919823] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:35:12,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498486396] [2021-12-06 17:35:12,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:12,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:35:12,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:35:12,560 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:35:12,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-06 17:35:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:12,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 2038 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 17:35:12,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:35:12,908 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 17:35:12,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:35:12,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498486396] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:35:12,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:35:12,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2021-12-06 17:35:12,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193897654] [2021-12-06 17:35:12,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:35:12,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:35:12,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:35:12,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:35:12,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:35:12,910 INFO L87 Difference]: Start difference. First operand 7524 states and 12829 transitions. Second operand has 8 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 17:35:13,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:35:13,212 INFO L93 Difference]: Finished difference Result 14792 states and 25274 transitions. [2021-12-06 17:35:13,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:35:13,213 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 132 [2021-12-06 17:35:13,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:35:13,248 INFO L225 Difference]: With dead ends: 14792 [2021-12-06 17:35:13,248 INFO L226 Difference]: Without dead ends: 7597 [2021-12-06 17:35:13,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2021-12-06 17:35:13,275 INFO L933 BasicCegarLoop]: 881 mSDtfsCounter, 175 mSDsluCounter, 5186 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 6067 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:35:13,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 6067 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:35:13,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7597 states. [2021-12-06 17:35:13,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7597 to 7524. [2021-12-06 17:35:13,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7524 states, 5900 states have (on average 1.6308474576271186) internal successors, (9622), 6073 states have internal predecessors, (9622), 1295 states have call successors, (1295), 228 states have call predecessors, (1295), 328 states have return successors, (1911), 1276 states have call predecessors, (1911), 1290 states have call successors, (1911) [2021-12-06 17:35:13,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7524 states to 7524 states and 12828 transitions. [2021-12-06 17:35:13,537 INFO L78 Accepts]: Start accepts. Automaton has 7524 states and 12828 transitions. Word has length 132 [2021-12-06 17:35:13,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:35:13,537 INFO L470 AbstractCegarLoop]: Abstraction has 7524 states and 12828 transitions. [2021-12-06 17:35:13,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 17:35:13,537 INFO L276 IsEmpty]: Start isEmpty. Operand 7524 states and 12828 transitions. [2021-12-06 17:35:13,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-06 17:35:13,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:35:13,563 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:35:13,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-12-06 17:35:13,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-06 17:35:13,763 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:35:13,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:35:13,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1788411904, now seen corresponding path program 1 times [2021-12-06 17:35:13,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:35:13,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824175093] [2021-12-06 17:35:13,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:13,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:35:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:13,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:13,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:13,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:13,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:35:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:13,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:13,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:35:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:13,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:35:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:14,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:14,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:14,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:14,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:14,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:35:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:14,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:35:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:14,131 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 17:35:14,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:35:14,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824175093] [2021-12-06 17:35:14,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824175093] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:35:14,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303581147] [2021-12-06 17:35:14,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:14,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:35:14,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:35:14,133 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:35:14,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-06 17:35:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:14,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 2041 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 17:35:14,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:35:14,473 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-06 17:35:14,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:35:14,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303581147] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:35:14,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:35:14,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2021-12-06 17:35:14,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093613807] [2021-12-06 17:35:14,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:35:14,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:35:14,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:35:14,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:35:14,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:35:14,475 INFO L87 Difference]: Start difference. First operand 7524 states and 12828 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-06 17:35:14,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:35:14,781 INFO L93 Difference]: Finished difference Result 8065 states and 13851 transitions. [2021-12-06 17:35:14,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:35:14,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 132 [2021-12-06 17:35:14,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:35:14,812 INFO L225 Difference]: With dead ends: 8065 [2021-12-06 17:35:14,812 INFO L226 Difference]: Without dead ends: 8048 [2021-12-06 17:35:14,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:35:14,818 INFO L933 BasicCegarLoop]: 901 mSDtfsCounter, 913 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:35:14,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [921 Valid, 1616 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:35:14,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8048 states. [2021-12-06 17:35:15,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8048 to 7572. [2021-12-06 17:35:15,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7572 states, 5948 states have (on average 1.6257565568258239) internal successors, (9670), 6121 states have internal predecessors, (9670), 1295 states have call successors, (1295), 228 states have call predecessors, (1295), 328 states have return successors, (1911), 1276 states have call predecessors, (1911), 1290 states have call successors, (1911) [2021-12-06 17:35:15,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7572 states to 7572 states and 12876 transitions. [2021-12-06 17:35:15,138 INFO L78 Accepts]: Start accepts. Automaton has 7572 states and 12876 transitions. Word has length 132 [2021-12-06 17:35:15,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:35:15,138 INFO L470 AbstractCegarLoop]: Abstraction has 7572 states and 12876 transitions. [2021-12-06 17:35:15,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-06 17:35:15,138 INFO L276 IsEmpty]: Start isEmpty. Operand 7572 states and 12876 transitions. [2021-12-06 17:35:15,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-06 17:35:15,151 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:35:15,151 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:35:15,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-12-06 17:35:15,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-06 17:35:15,352 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:35:15,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:35:15,352 INFO L85 PathProgramCache]: Analyzing trace with hash 405992699, now seen corresponding path program 1 times [2021-12-06 17:35:15,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:35:15,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196325390] [2021-12-06 17:35:15,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:15,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:35:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:15,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:15,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:15,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:15,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:35:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:15,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:15,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:35:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:15,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:35:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:15,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:15,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:15,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:15,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:15,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:35:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:15,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:35:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:15,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 17:35:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:15,694 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 17:35:15,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:35:15,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196325390] [2021-12-06 17:35:15,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196325390] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:35:15,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617558418] [2021-12-06 17:35:15,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:15,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:35:15,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:35:15,695 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:35:15,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-06 17:35:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:15,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 2057 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 17:35:15,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:35:16,006 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-06 17:35:16,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:35:16,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617558418] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:35:16,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:35:16,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2021-12-06 17:35:16,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910796434] [2021-12-06 17:35:16,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:35:16,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:35:16,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:35:16,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:35:16,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:35:16,008 INFO L87 Difference]: Start difference. First operand 7572 states and 12876 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 17:35:16,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:35:16,382 INFO L93 Difference]: Finished difference Result 8430 states and 14250 transitions. [2021-12-06 17:35:16,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:35:16,383 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 138 [2021-12-06 17:35:16,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:35:16,413 INFO L225 Difference]: With dead ends: 8430 [2021-12-06 17:35:16,413 INFO L226 Difference]: Without dead ends: 8413 [2021-12-06 17:35:16,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-12-06 17:35:16,420 INFO L933 BasicCegarLoop]: 914 mSDtfsCounter, 891 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 3591 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:35:16,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [893 Valid, 3591 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:35:16,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8413 states. [2021-12-06 17:35:16,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8413 to 8188. [2021-12-06 17:35:16,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8188 states, 6432 states have (on average 1.6128731343283582) internal successors, (10374), 6605 states have internal predecessors, (10374), 1387 states have call successors, (1387), 268 states have call predecessors, (1387), 368 states have return successors, (2135), 1368 states have call predecessors, (2135), 1382 states have call successors, (2135) [2021-12-06 17:35:16,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8188 states to 8188 states and 13896 transitions. [2021-12-06 17:35:16,692 INFO L78 Accepts]: Start accepts. Automaton has 8188 states and 13896 transitions. Word has length 138 [2021-12-06 17:35:16,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:35:16,693 INFO L470 AbstractCegarLoop]: Abstraction has 8188 states and 13896 transitions. [2021-12-06 17:35:16,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 17:35:16,693 INFO L276 IsEmpty]: Start isEmpty. Operand 8188 states and 13896 transitions. [2021-12-06 17:35:16,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-06 17:35:16,704 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:35:16,704 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:35:16,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-12-06 17:35:16,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 17:35:16,906 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:35:16,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:35:16,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1582215139, now seen corresponding path program 1 times [2021-12-06 17:35:16,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:35:16,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078363137] [2021-12-06 17:35:16,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:16,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:35:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:17,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:17,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:17,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:17,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:35:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:17,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:17,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:35:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:17,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:35:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:17,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:17,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:17,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:17,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:17,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:35:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:17,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:35:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:17,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 17:35:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:17,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:35:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 17:35:17,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:35:17,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078363137] [2021-12-06 17:35:17,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078363137] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:35:17,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813886067] [2021-12-06 17:35:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:17,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:35:17,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:35:17,301 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:35:17,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-06 17:35:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:17,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 2094 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 17:35:17,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:35:17,602 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 17:35:17,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:35:17,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813886067] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:35:17,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:35:17,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 13 [2021-12-06 17:35:17,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344614515] [2021-12-06 17:35:17,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:35:17,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:35:17,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:35:17,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:35:17,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:35:17,604 INFO L87 Difference]: Start difference. First operand 8188 states and 13896 transitions. Second operand has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-06 17:35:17,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:35:17,883 INFO L93 Difference]: Finished difference Result 16234 states and 27588 transitions. [2021-12-06 17:35:17,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:35:17,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 149 [2021-12-06 17:35:17,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:35:17,915 INFO L225 Difference]: With dead ends: 16234 [2021-12-06 17:35:17,915 INFO L226 Difference]: Without dead ends: 8271 [2021-12-06 17:35:17,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:35:17,939 INFO L933 BasicCegarLoop]: 892 mSDtfsCounter, 167 mSDsluCounter, 4336 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 5228 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:35:17,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 5228 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:35:17,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8271 states. [2021-12-06 17:35:18,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8271 to 8188. [2021-12-06 17:35:18,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8188 states, 6432 states have (on average 1.6128731343283582) internal successors, (10374), 6605 states have internal predecessors, (10374), 1387 states have call successors, (1387), 268 states have call predecessors, (1387), 368 states have return successors, (2135), 1368 states have call predecessors, (2135), 1382 states have call successors, (2135) [2021-12-06 17:35:18,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8188 states to 8188 states and 13896 transitions. [2021-12-06 17:35:18,273 INFO L78 Accepts]: Start accepts. Automaton has 8188 states and 13896 transitions. Word has length 149 [2021-12-06 17:35:18,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:35:18,273 INFO L470 AbstractCegarLoop]: Abstraction has 8188 states and 13896 transitions. [2021-12-06 17:35:18,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-06 17:35:18,273 INFO L276 IsEmpty]: Start isEmpty. Operand 8188 states and 13896 transitions. [2021-12-06 17:35:18,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-06 17:35:18,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:35:18,284 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:35:18,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-12-06 17:35:18,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-06 17:35:18,486 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:35:18,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:35:18,487 INFO L85 PathProgramCache]: Analyzing trace with hash 584121334, now seen corresponding path program 1 times [2021-12-06 17:35:18,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:35:18,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117607278] [2021-12-06 17:35:18,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:18,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:35:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:18,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:18,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:18,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:18,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:35:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:18,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:18,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:18,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 17:35:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:18,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:18,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:18,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:18,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:18,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:35:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:18,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:35:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:18,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 17:35:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:18,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:35:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:18,832 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 17:35:18,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:35:18,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117607278] [2021-12-06 17:35:18,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117607278] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:35:18,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597608715] [2021-12-06 17:35:18,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:18,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:35:18,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:35:18,834 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:35:18,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-06 17:35:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:19,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 2095 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 17:35:19,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:35:19,108 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 17:35:19,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:35:19,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597608715] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:35:19,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:35:19,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 8 [2021-12-06 17:35:19,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750698005] [2021-12-06 17:35:19,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:35:19,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:35:19,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:35:19,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:35:19,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:35:19,110 INFO L87 Difference]: Start difference. First operand 8188 states and 13896 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 17:35:19,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:35:19,366 INFO L93 Difference]: Finished difference Result 16238 states and 27594 transitions. [2021-12-06 17:35:19,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:35:19,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 149 [2021-12-06 17:35:19,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:35:19,395 INFO L225 Difference]: With dead ends: 16238 [2021-12-06 17:35:19,395 INFO L226 Difference]: Without dead ends: 8018 [2021-12-06 17:35:19,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:35:19,416 INFO L933 BasicCegarLoop]: 895 mSDtfsCounter, 11 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:35:19,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 2676 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:35:19,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8018 states. [2021-12-06 17:35:19,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8018 to 8018. [2021-12-06 17:35:19,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8018 states, 6277 states have (on average 1.614306197227975) internal successors, (10133), 6444 states have internal predecessors, (10133), 1382 states have call successors, (1382), 265 states have call predecessors, (1382), 358 states have return successors, (2121), 1362 states have call predecessors, (2121), 1377 states have call successors, (2121) [2021-12-06 17:35:19,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8018 states to 8018 states and 13636 transitions. [2021-12-06 17:35:19,662 INFO L78 Accepts]: Start accepts. Automaton has 8018 states and 13636 transitions. Word has length 149 [2021-12-06 17:35:19,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:35:19,662 INFO L470 AbstractCegarLoop]: Abstraction has 8018 states and 13636 transitions. [2021-12-06 17:35:19,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 17:35:19,662 INFO L276 IsEmpty]: Start isEmpty. Operand 8018 states and 13636 transitions. [2021-12-06 17:35:19,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 17:35:19,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:35:19,669 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:35:19,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-12-06 17:35:19,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-06 17:35:19,870 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:35:19,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:35:19,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1377800840, now seen corresponding path program 1 times [2021-12-06 17:35:19,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:35:19,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463272508] [2021-12-06 17:35:19,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:19,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:35:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:19,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:19,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:19,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:20,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 17:35:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:20,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:20,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:35:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:20,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 17:35:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:20,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:20,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:20,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:20,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:20,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:35:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:20,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:35:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:20,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 17:35:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:20,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:35:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:20,246 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 17:35:20,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:35:20,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463272508] [2021-12-06 17:35:20,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463272508] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:35:20,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275178827] [2021-12-06 17:35:20,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:20,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:35:20,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:35:20,247 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:35:20,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-06 17:35:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:20,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 2100 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:35:20,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:35:20,533 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 17:35:20,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:35:20,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275178827] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:35:20,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:35:20,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2021-12-06 17:35:20,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099929056] [2021-12-06 17:35:20,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:35:20,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:35:20,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:35:20,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:35:20,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:35:20,535 INFO L87 Difference]: Start difference. First operand 8018 states and 13636 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 17:35:20,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:35:20,778 INFO L93 Difference]: Finished difference Result 16005 states and 27238 transitions. [2021-12-06 17:35:20,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:35:20,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 151 [2021-12-06 17:35:20,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:35:20,811 INFO L225 Difference]: With dead ends: 16005 [2021-12-06 17:35:20,811 INFO L226 Difference]: Without dead ends: 8018 [2021-12-06 17:35:20,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:35:20,838 INFO L933 BasicCegarLoop]: 854 mSDtfsCounter, 176 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:35:20,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 2509 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:35:20,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8018 states. [2021-12-06 17:35:21,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8018 to 8018. [2021-12-06 17:35:21,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8018 states, 6277 states have (on average 1.614146885454835) internal successors, (10132), 6444 states have internal predecessors, (10132), 1382 states have call successors, (1382), 265 states have call predecessors, (1382), 358 states have return successors, (2121), 1362 states have call predecessors, (2121), 1377 states have call successors, (2121) [2021-12-06 17:35:21,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8018 states to 8018 states and 13635 transitions. [2021-12-06 17:35:21,100 INFO L78 Accepts]: Start accepts. Automaton has 8018 states and 13635 transitions. Word has length 151 [2021-12-06 17:35:21,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:35:21,100 INFO L470 AbstractCegarLoop]: Abstraction has 8018 states and 13635 transitions. [2021-12-06 17:35:21,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 17:35:21,100 INFO L276 IsEmpty]: Start isEmpty. Operand 8018 states and 13635 transitions. [2021-12-06 17:35:21,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-06 17:35:21,107 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:35:21,107 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:35:21,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-12-06 17:35:21,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:35:21,308 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:35:21,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:35:21,309 INFO L85 PathProgramCache]: Analyzing trace with hash 2041329410, now seen corresponding path program 1 times [2021-12-06 17:35:21,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:35:21,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627100981] [2021-12-06 17:35:21,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:21,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:35:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:21,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:21,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:21,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:21,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:35:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:21,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:21,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:35:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:21,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:35:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:21,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:21,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:21,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:21,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:21,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:35:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:21,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:35:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:21,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 17:35:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:21,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:35:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:21,750 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 17:35:21,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:35:21,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627100981] [2021-12-06 17:35:21,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627100981] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:35:21,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:35:21,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 17:35:21,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770179864] [2021-12-06 17:35:21,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:35:21,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 17:35:21,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:35:21,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 17:35:21,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:35:21,752 INFO L87 Difference]: Start difference. First operand 8018 states and 13635 transitions. Second operand has 14 states, 13 states have (on average 8.692307692307692) internal successors, (113), 8 states have internal predecessors, (113), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-06 17:35:29,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:35:29,541 INFO L93 Difference]: Finished difference Result 19344 states and 34577 transitions. [2021-12-06 17:35:29,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 17:35:29,542 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 8.692307692307692) internal successors, (113), 8 states have internal predecessors, (113), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 152 [2021-12-06 17:35:29,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:35:29,586 INFO L225 Difference]: With dead ends: 19344 [2021-12-06 17:35:29,586 INFO L226 Difference]: Without dead ends: 11372 [2021-12-06 17:35:29,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=196, Invalid=994, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 17:35:29,616 INFO L933 BasicCegarLoop]: 947 mSDtfsCounter, 2025 mSDsluCounter, 3784 mSDsCounter, 0 mSdLazyCounter, 8433 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2098 SdHoareTripleChecker+Valid, 4731 SdHoareTripleChecker+Invalid, 9067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 8433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:35:29,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2098 Valid, 4731 Invalid, 9067 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [634 Valid, 8433 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-12-06 17:35:29,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11372 states. [2021-12-06 17:35:30,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11372 to 8102. [2021-12-06 17:35:30,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8102 states, 6345 states have (on average 1.607565011820331) internal successors, (10200), 6504 states have internal predecessors, (10200), 1382 states have call successors, (1382), 265 states have call predecessors, (1382), 374 states have return successors, (2193), 1386 states have call predecessors, (2193), 1377 states have call successors, (2193) [2021-12-06 17:35:30,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8102 states to 8102 states and 13775 transitions. [2021-12-06 17:35:30,487 INFO L78 Accepts]: Start accepts. Automaton has 8102 states and 13775 transitions. Word has length 152 [2021-12-06 17:35:30,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:35:30,488 INFO L470 AbstractCegarLoop]: Abstraction has 8102 states and 13775 transitions. [2021-12-06 17:35:30,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 8.692307692307692) internal successors, (113), 8 states have internal predecessors, (113), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-06 17:35:30,488 INFO L276 IsEmpty]: Start isEmpty. Operand 8102 states and 13775 transitions. [2021-12-06 17:35:30,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 17:35:30,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:35:30,495 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:35:30,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-06 17:35:30,495 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:35:30,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:35:30,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1656998355, now seen corresponding path program 1 times [2021-12-06 17:35:30,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:35:30,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985582213] [2021-12-06 17:35:30,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:30,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:35:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:30,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:30,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:30,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:30,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:35:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:30,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:30,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:30,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 17:35:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:30,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:30,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:30,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:30,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:30,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 17:35:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:30,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:35:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:30,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:35:30,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:30,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:35:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:30,785 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 17:35:30,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:35:30,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985582213] [2021-12-06 17:35:30,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985582213] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:35:30,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:35:30,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 17:35:30,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032001168] [2021-12-06 17:35:30,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:35:30,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:35:30,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:35:30,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:35:30,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:35:30,786 INFO L87 Difference]: Start difference. First operand 8102 states and 13775 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 17:35:36,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:35:36,052 INFO L93 Difference]: Finished difference Result 13206 states and 22735 transitions. [2021-12-06 17:35:36,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 17:35:36,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 156 [2021-12-06 17:35:36,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:35:36,071 INFO L225 Difference]: With dead ends: 13206 [2021-12-06 17:35:36,071 INFO L226 Difference]: Without dead ends: 5100 [2021-12-06 17:35:36,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:35:36,092 INFO L933 BasicCegarLoop]: 965 mSDtfsCounter, 1442 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 3201 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 3624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 3201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:35:36,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1516 Valid, 2340 Invalid, 3624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 3201 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-12-06 17:35:36,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5100 states. [2021-12-06 17:35:36,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5100 to 3611. [2021-12-06 17:35:36,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3611 states, 2852 states have (on average 1.6125525946704067) internal successors, (4599), 2923 states have internal predecessors, (4599), 589 states have call successors, (589), 136 states have call predecessors, (589), 169 states have return successors, (831), 573 states have call predecessors, (831), 584 states have call successors, (831) [2021-12-06 17:35:36,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3611 states to 3611 states and 6019 transitions. [2021-12-06 17:35:36,488 INFO L78 Accepts]: Start accepts. Automaton has 3611 states and 6019 transitions. Word has length 156 [2021-12-06 17:35:36,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:35:36,488 INFO L470 AbstractCegarLoop]: Abstraction has 3611 states and 6019 transitions. [2021-12-06 17:35:36,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 17:35:36,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3611 states and 6019 transitions. [2021-12-06 17:35:36,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 17:35:36,492 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:35:36,492 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:35:36,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-06 17:35:36,492 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:35:36,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:35:36,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1944909205, now seen corresponding path program 1 times [2021-12-06 17:35:36,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:35:36,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591015938] [2021-12-06 17:35:36,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:36,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:35:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:36,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:36,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:36,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:36,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:35:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:36,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:36,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:35:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:36,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:35:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:36,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:36,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:36,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:36,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:36,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:35:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:36,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:35:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:36,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 17:35:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:36,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:35:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:36,827 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 17:35:36,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:35:36,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591015938] [2021-12-06 17:35:36,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591015938] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:35:36,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464284265] [2021-12-06 17:35:36,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:36,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:35:36,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:35:36,829 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:35:36,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-12-06 17:35:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:37,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 2106 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 17:35:37,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:35:37,094 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:35:37,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:35:37,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464284265] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:35:37,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:35:37,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 11 [2021-12-06 17:35:37,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807460440] [2021-12-06 17:35:37,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:35:37,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:35:37,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:35:37,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:35:37,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:35:37,095 INFO L87 Difference]: Start difference. First operand 3611 states and 6019 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 17:35:37,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:35:37,773 INFO L93 Difference]: Finished difference Result 9662 states and 16397 transitions. [2021-12-06 17:35:37,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:35:37,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 157 [2021-12-06 17:35:37,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:35:37,797 INFO L225 Difference]: With dead ends: 9662 [2021-12-06 17:35:37,797 INFO L226 Difference]: Without dead ends: 6161 [2021-12-06 17:35:37,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:35:37,811 INFO L933 BasicCegarLoop]: 1031 mSDtfsCounter, 818 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:35:37,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [818 Valid, 1733 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:35:37,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6161 states. [2021-12-06 17:35:38,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6161 to 6146. [2021-12-06 17:35:38,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6146 states, 4816 states have (on average 1.5942691029900333) internal successors, (7678), 4941 states have internal predecessors, (7678), 1036 states have call successors, (1036), 246 states have call predecessors, (1036), 293 states have return successors, (1525), 1002 states have call predecessors, (1525), 1031 states have call successors, (1525) [2021-12-06 17:35:38,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6146 states to 6146 states and 10239 transitions. [2021-12-06 17:35:38,433 INFO L78 Accepts]: Start accepts. Automaton has 6146 states and 10239 transitions. Word has length 157 [2021-12-06 17:35:38,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:35:38,434 INFO L470 AbstractCegarLoop]: Abstraction has 6146 states and 10239 transitions. [2021-12-06 17:35:38,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 17:35:38,434 INFO L276 IsEmpty]: Start isEmpty. Operand 6146 states and 10239 transitions. [2021-12-06 17:35:38,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-06 17:35:38,437 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:35:38,437 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:35:38,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-12-06 17:35:38,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-12-06 17:35:38,639 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:35:38,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:35:38,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1871061561, now seen corresponding path program 1 times [2021-12-06 17:35:38,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:35:38,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395196002] [2021-12-06 17:35:38,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:38,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:35:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:38,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:38,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:38,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:38,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:35:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:38,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:38,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:35:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:38,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:35:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:38,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:38,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:38,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:38,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:38,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:35:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:39,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:35:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:39,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:35:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:39,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 17:35:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:39,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:35:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:39,020 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 17:35:39,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:35:39,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395196002] [2021-12-06 17:35:39,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395196002] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:35:39,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73031055] [2021-12-06 17:35:39,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:39,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:35:39,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:35:39,021 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:35:39,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-12-06 17:35:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:39,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 2128 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 17:35:39,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:35:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:35:39,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:35:39,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73031055] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:35:39,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:35:39,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 10 [2021-12-06 17:35:39,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943754533] [2021-12-06 17:35:39,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:35:39,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:35:39,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:35:39,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:35:39,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:35:39,314 INFO L87 Difference]: Start difference. First operand 6146 states and 10239 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 17:35:40,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:35:40,426 INFO L93 Difference]: Finished difference Result 17167 states and 29131 transitions. [2021-12-06 17:35:40,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:35:40,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 162 [2021-12-06 17:35:40,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:35:40,469 INFO L225 Difference]: With dead ends: 17167 [2021-12-06 17:35:40,469 INFO L226 Difference]: Without dead ends: 11163 [2021-12-06 17:35:40,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:35:40,486 INFO L933 BasicCegarLoop]: 914 mSDtfsCounter, 879 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:35:40,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 1583 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:35:40,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11163 states. [2021-12-06 17:35:41,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11163 to 11136. [2021-12-06 17:35:41,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11136 states, 8686 states have (on average 1.5945199171079898) internal successors, (13850), 8926 states have internal predecessors, (13850), 1908 states have call successors, (1908), 468 states have call predecessors, (1908), 541 states have return successors, (3013), 1829 states have call predecessors, (3013), 1903 states have call successors, (3013) [2021-12-06 17:35:41,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11136 states to 11136 states and 18771 transitions. [2021-12-06 17:35:41,558 INFO L78 Accepts]: Start accepts. Automaton has 11136 states and 18771 transitions. Word has length 162 [2021-12-06 17:35:41,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:35:41,558 INFO L470 AbstractCegarLoop]: Abstraction has 11136 states and 18771 transitions. [2021-12-06 17:35:41,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 17:35:41,558 INFO L276 IsEmpty]: Start isEmpty. Operand 11136 states and 18771 transitions. [2021-12-06 17:35:41,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-06 17:35:41,562 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:35:41,562 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:35:41,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-12-06 17:35:41,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:35:41,764 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:35:41,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:35:41,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1727846915, now seen corresponding path program 1 times [2021-12-06 17:35:41,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:35:41,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606935754] [2021-12-06 17:35:41,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:41,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:35:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:41,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:41,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:41,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:41,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:35:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:41,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:41,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:35:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:41,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:35:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:42,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:42,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:42,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:42,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:42,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:35:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:42,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:35:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:42,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:35:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:42,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 17:35:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:42,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 17:35:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:42,191 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 17:35:42,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:35:42,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606935754] [2021-12-06 17:35:42,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606935754] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:35:42,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:35:42,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-06 17:35:42,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711947228] [2021-12-06 17:35:42,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:35:42,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 17:35:42,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:35:42,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 17:35:42,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:35:42,192 INFO L87 Difference]: Start difference. First operand 11136 states and 18771 transitions. Second operand has 16 states, 16 states have (on average 7.3125) internal successors, (117), 10 states have internal predecessors, (117), 4 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 17:35:53,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:35:53,513 INFO L93 Difference]: Finished difference Result 27109 states and 48263 transitions. [2021-12-06 17:35:53,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 17:35:53,514 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.3125) internal successors, (117), 10 states have internal predecessors, (117), 4 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 165 [2021-12-06 17:35:53,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:35:53,577 INFO L225 Difference]: With dead ends: 27109 [2021-12-06 17:35:53,577 INFO L226 Difference]: Without dead ends: 16989 [2021-12-06 17:35:53,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=250, Invalid=1156, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 17:35:53,618 INFO L933 BasicCegarLoop]: 1132 mSDtfsCounter, 2628 mSDsluCounter, 4549 mSDsCounter, 0 mSdLazyCounter, 11492 mSolverCounterSat, 813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2652 SdHoareTripleChecker+Valid, 5681 SdHoareTripleChecker+Invalid, 12305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 813 IncrementalHoareTripleChecker+Valid, 11492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:35:53,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2652 Valid, 5681 Invalid, 12305 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [813 Valid, 11492 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2021-12-06 17:35:53,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16989 states. [2021-12-06 17:35:54,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16989 to 13072. [2021-12-06 17:35:55,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13072 states, 10212 states have (on average 1.572072072072072) internal successors, (16054), 10458 states have internal predecessors, (16054), 2198 states have call successors, (2198), 586 states have call predecessors, (2198), 661 states have return successors, (3542), 2115 states have call predecessors, (3542), 2193 states have call successors, (3542) [2021-12-06 17:35:55,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13072 states to 13072 states and 21794 transitions. [2021-12-06 17:35:55,059 INFO L78 Accepts]: Start accepts. Automaton has 13072 states and 21794 transitions. Word has length 165 [2021-12-06 17:35:55,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:35:55,059 INFO L470 AbstractCegarLoop]: Abstraction has 13072 states and 21794 transitions. [2021-12-06 17:35:55,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.3125) internal successors, (117), 10 states have internal predecessors, (117), 4 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 17:35:55,059 INFO L276 IsEmpty]: Start isEmpty. Operand 13072 states and 21794 transitions. [2021-12-06 17:35:55,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-06 17:35:55,062 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:35:55,062 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:35:55,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-06 17:35:55,062 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:35:55,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:35:55,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1141041032, now seen corresponding path program 1 times [2021-12-06 17:35:55,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:35:55,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520235288] [2021-12-06 17:35:55,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:55,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:35:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:55,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:55,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:55,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:35:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:55,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:35:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:55,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:55,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:35:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:55,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:35:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:55,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:55,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:55,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:35:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:55,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:35:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:55,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:35:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:55,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:35:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:55,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:35:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:55,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:35:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:55,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 17:35:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:55,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 17:35:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:55,426 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 17:35:55,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:35:55,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520235288] [2021-12-06 17:35:55,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520235288] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:35:55,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:35:55,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 17:35:55,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713699122] [2021-12-06 17:35:55,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:35:55,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 17:35:55,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:35:55,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 17:35:55,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:35:55,427 INFO L87 Difference]: Start difference. First operand 13072 states and 21794 transitions. Second operand has 12 states, 11 states have (on average 10.636363636363637) internal successors, (117), 7 states have internal predecessors, (117), 4 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-06 17:36:08,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:36:08,595 INFO L93 Difference]: Finished difference Result 35069 states and 63483 transitions. [2021-12-06 17:36:08,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 17:36:08,596 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.636363636363637) internal successors, (117), 7 states have internal predecessors, (117), 4 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 167 [2021-12-06 17:36:08,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:36:08,703 INFO L225 Difference]: With dead ends: 35069 [2021-12-06 17:36:08,704 INFO L226 Difference]: Without dead ends: 23811 [2021-12-06 17:36:08,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=277, Invalid=983, Unknown=0, NotChecked=0, Total=1260 [2021-12-06 17:36:08,759 INFO L933 BasicCegarLoop]: 946 mSDtfsCounter, 3711 mSDsluCounter, 2709 mSDsCounter, 0 mSdLazyCounter, 7733 mSolverCounterSat, 1350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3774 SdHoareTripleChecker+Valid, 3655 SdHoareTripleChecker+Invalid, 9083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1350 IncrementalHoareTripleChecker+Valid, 7733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:36:08,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3774 Valid, 3655 Invalid, 9083 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1350 Valid, 7733 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2021-12-06 17:36:08,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23811 states. [2021-12-06 17:36:10,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23811 to 18033. [2021-12-06 17:36:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18033 states, 14064 states have (on average 1.5549630261660978) internal successors, (21869), 14465 states have internal predecessors, (21869), 2941 states have call successors, (2941), 802 states have call predecessors, (2941), 1027 states have return successors, (5393), 2875 states have call predecessors, (5393), 2936 states have call successors, (5393) [2021-12-06 17:36:10,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18033 states to 18033 states and 30203 transitions. [2021-12-06 17:36:10,903 INFO L78 Accepts]: Start accepts. Automaton has 18033 states and 30203 transitions. Word has length 167 [2021-12-06 17:36:10,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:36:10,903 INFO L470 AbstractCegarLoop]: Abstraction has 18033 states and 30203 transitions. [2021-12-06 17:36:10,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 10.636363636363637) internal successors, (117), 7 states have internal predecessors, (117), 4 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-06 17:36:10,903 INFO L276 IsEmpty]: Start isEmpty. Operand 18033 states and 30203 transitions. [2021-12-06 17:36:10,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-06 17:36:10,906 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:36:10,907 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:36:10,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-06 17:36:10,907 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:36:10,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:36:10,907 INFO L85 PathProgramCache]: Analyzing trace with hash 958042173, now seen corresponding path program 1 times [2021-12-06 17:36:10,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:36:10,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849528705] [2021-12-06 17:36:10,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:36:10,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:36:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:11,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:36:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:11,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:36:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:11,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:36:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:11,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:36:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:11,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:36:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:11,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:36:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:11,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:36:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:11,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:36:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:11,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:36:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:11,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:36:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:11,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:36:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:11,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:36:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:11,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:36:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:11,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:36:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:11,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:36:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:11,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:36:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:11,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 17:36:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:11,353 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 17:36:11,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:36:11,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849528705] [2021-12-06 17:36:11,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849528705] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:36:11,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511878607] [2021-12-06 17:36:11,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:36:11,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:36:11,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:36:11,354 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:36:11,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-12-06 17:36:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:11,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 2148 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:36:11,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:36:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 17:36:11,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:36:11,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511878607] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:36:11,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:36:11,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2021-12-06 17:36:11,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452218101] [2021-12-06 17:36:11,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:36:11,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:36:11,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:36:11,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:36:11,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:36:11,662 INFO L87 Difference]: Start difference. First operand 18033 states and 30203 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 17:36:13,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:36:13,884 INFO L93 Difference]: Finished difference Result 36292 states and 62653 transitions. [2021-12-06 17:36:13,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:36:13,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 169 [2021-12-06 17:36:13,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:36:13,948 INFO L225 Difference]: With dead ends: 36292 [2021-12-06 17:36:13,948 INFO L226 Difference]: Without dead ends: 18277 [2021-12-06 17:36:14,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:36:14,005 INFO L933 BasicCegarLoop]: 852 mSDtfsCounter, 22 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:36:14,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 2521 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:36:14,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18277 states. [2021-12-06 17:36:15,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18277 to 18277. [2021-12-06 17:36:15,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18277 states, 14264 states have (on average 1.536665731912507) internal successors, (21919), 14683 states have internal predecessors, (21919), 2941 states have call successors, (2941), 828 states have call predecessors, (2941), 1071 states have return successors, (5437), 2875 states have call predecessors, (5437), 2936 states have call successors, (5437) [2021-12-06 17:36:15,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18277 states to 18277 states and 30297 transitions. [2021-12-06 17:36:15,967 INFO L78 Accepts]: Start accepts. Automaton has 18277 states and 30297 transitions. Word has length 169 [2021-12-06 17:36:15,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:36:15,967 INFO L470 AbstractCegarLoop]: Abstraction has 18277 states and 30297 transitions. [2021-12-06 17:36:15,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 17:36:15,968 INFO L276 IsEmpty]: Start isEmpty. Operand 18277 states and 30297 transitions. [2021-12-06 17:36:15,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-06 17:36:15,971 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:36:15,971 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:36:15,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-12-06 17:36:16,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:36:16,173 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:36:16,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:36:16,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1870094948, now seen corresponding path program 1 times [2021-12-06 17:36:16,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:36:16,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066866535] [2021-12-06 17:36:16,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:36:16,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:36:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:16,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:36:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:16,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:36:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:16,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:36:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:16,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:36:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:16,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:36:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:16,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:36:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:16,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:36:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:16,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:36:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:16,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:36:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:16,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:36:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:16,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:36:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:16,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:36:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:16,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:36:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:16,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:36:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:16,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:36:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:16,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:36:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:16,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 17:36:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:16,585 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 17:36:16,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:36:16,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066866535] [2021-12-06 17:36:16,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066866535] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:36:16,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:36:16,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 17:36:16,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542164417] [2021-12-06 17:36:16,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:36:16,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 17:36:16,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:36:16,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 17:36:16,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:36:16,586 INFO L87 Difference]: Start difference. First operand 18277 states and 30297 transitions. Second operand has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 7 states have internal predecessors, (118), 4 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-06 17:36:28,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:36:28,978 INFO L93 Difference]: Finished difference Result 42258 states and 73780 transitions. [2021-12-06 17:36:28,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 17:36:28,979 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 7 states have internal predecessors, (118), 4 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 170 [2021-12-06 17:36:28,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:36:29,082 INFO L225 Difference]: With dead ends: 42258 [2021-12-06 17:36:29,082 INFO L226 Difference]: Without dead ends: 25799 [2021-12-06 17:36:29,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=222, Invalid=708, Unknown=0, NotChecked=0, Total=930 [2021-12-06 17:36:29,151 INFO L933 BasicCegarLoop]: 935 mSDtfsCounter, 4486 mSDsluCounter, 2155 mSDsCounter, 0 mSdLazyCounter, 6772 mSolverCounterSat, 1520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4547 SdHoareTripleChecker+Valid, 3090 SdHoareTripleChecker+Invalid, 8292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1520 IncrementalHoareTripleChecker+Valid, 6772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:36:29,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4547 Valid, 3090 Invalid, 8292 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1520 Valid, 6772 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2021-12-06 17:36:29,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25799 states. [2021-12-06 17:36:31,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25799 to 20509. [2021-12-06 17:36:31,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20509 states, 16056 states have (on average 1.5153836571998007) internal successors, (24331), 16479 states have internal predecessors, (24331), 3207 states have call successors, (3207), 1022 states have call predecessors, (3207), 1245 states have return successors, (5851), 3117 states have call predecessors, (5851), 3202 states have call successors, (5851) [2021-12-06 17:36:31,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20509 states to 20509 states and 33389 transitions. [2021-12-06 17:36:31,593 INFO L78 Accepts]: Start accepts. Automaton has 20509 states and 33389 transitions. Word has length 170 [2021-12-06 17:36:31,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:36:31,593 INFO L470 AbstractCegarLoop]: Abstraction has 20509 states and 33389 transitions. [2021-12-06 17:36:31,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 7 states have internal predecessors, (118), 4 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-06 17:36:31,593 INFO L276 IsEmpty]: Start isEmpty. Operand 20509 states and 33389 transitions. [2021-12-06 17:36:31,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 17:36:31,597 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:36:31,597 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:36:31,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-06 17:36:31,597 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:36:31,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:36:31,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1157102160, now seen corresponding path program 1 times [2021-12-06 17:36:31,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:36:31,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521740373] [2021-12-06 17:36:31,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:36:31,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:36:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:31,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:36:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:31,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:36:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:31,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:36:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:31,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:36:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:31,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:36:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:31,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:36:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:31,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:36:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:31,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:36:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:31,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:36:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:31,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:36:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:31,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:36:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:32,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:36:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:32,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:36:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:32,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:36:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:32,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:36:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:32,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:36:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:32,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:36:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:32,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 17:36:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:32,035 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-06 17:36:32,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:36:32,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521740373] [2021-12-06 17:36:32,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521740373] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:36:32,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158053458] [2021-12-06 17:36:32,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:36:32,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:36:32,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:36:32,036 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:36:32,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-12-06 17:36:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:32,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 2165 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 17:36:32,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:36:32,334 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-06 17:36:32,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:36:32,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158053458] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:36:32,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:36:32,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2021-12-06 17:36:32,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943095016] [2021-12-06 17:36:32,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:36:32,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:36:32,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:36:32,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:36:32,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:36:32,335 INFO L87 Difference]: Start difference. First operand 20509 states and 33389 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-06 17:36:34,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:36:34,737 INFO L93 Difference]: Finished difference Result 21528 states and 35545 transitions. [2021-12-06 17:36:34,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:36:34,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 175 [2021-12-06 17:36:34,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:36:34,811 INFO L225 Difference]: With dead ends: 21528 [2021-12-06 17:36:34,811 INFO L226 Difference]: Without dead ends: 21513 [2021-12-06 17:36:34,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-12-06 17:36:34,822 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 71 mSDsluCounter, 2691 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 3611 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:36:34,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 3611 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:36:34,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21513 states. [2021-12-06 17:36:37,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21513 to 20689. [2021-12-06 17:36:37,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20689 states, 16236 states have (on average 1.509669869425967) internal successors, (24511), 16659 states have internal predecessors, (24511), 3207 states have call successors, (3207), 1022 states have call predecessors, (3207), 1245 states have return successors, (5851), 3117 states have call predecessors, (5851), 3202 states have call successors, (5851) [2021-12-06 17:36:37,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20689 states to 20689 states and 33569 transitions. [2021-12-06 17:36:37,186 INFO L78 Accepts]: Start accepts. Automaton has 20689 states and 33569 transitions. Word has length 175 [2021-12-06 17:36:37,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:36:37,186 INFO L470 AbstractCegarLoop]: Abstraction has 20689 states and 33569 transitions. [2021-12-06 17:36:37,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-06 17:36:37,186 INFO L276 IsEmpty]: Start isEmpty. Operand 20689 states and 33569 transitions. [2021-12-06 17:36:37,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-12-06 17:36:37,193 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:36:37,193 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:36:37,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-12-06 17:36:37,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-12-06 17:36:37,395 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:36:37,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:36:37,396 INFO L85 PathProgramCache]: Analyzing trace with hash -718862843, now seen corresponding path program 1 times [2021-12-06 17:36:37,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:36:37,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678144582] [2021-12-06 17:36:37,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:36:37,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:36:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:37,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:36:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:37,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:36:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:37,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:36:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:37,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:36:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:37,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:36:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:37,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:36:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:37,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:36:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:37,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:36:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:37,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:36:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:37,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:36:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:37,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:36:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:37,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:36:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:37,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:36:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:37,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 17:36:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:37,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:36:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:37,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 17:36:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:37,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:36:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:37,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 17:36:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:37,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 17:36:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:37,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 17:36:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:37,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 17:36:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:37,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 17:36:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:37,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 17:36:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:37,903 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-12-06 17:36:37,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:36:37,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678144582] [2021-12-06 17:36:37,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678144582] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:36:37,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580711118] [2021-12-06 17:36:37,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:36:37,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:36:37,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:36:37,904 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:36:37,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-12-06 17:36:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:36:38,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 2287 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 17:36:38,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:36:38,346 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 46 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 17:36:38,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:36:38,901 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-12-06 17:36:38,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580711118] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:36:38,901 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:36:38,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 8] total 25 [2021-12-06 17:36:38,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268625383] [2021-12-06 17:36:38,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:36:38,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 17:36:38,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:36:38,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 17:36:38,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2021-12-06 17:36:38,903 INFO L87 Difference]: Start difference. First operand 20689 states and 33569 transitions. Second operand has 25 states, 24 states have (on average 12.916666666666666) internal successors, (310), 18 states have internal predecessors, (310), 9 states have call successors, (62), 9 states have call predecessors, (62), 13 states have return successors, (60), 12 states have call predecessors, (60), 9 states have call successors, (60) [2021-12-06 17:37:04,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:37:04,451 INFO L93 Difference]: Finished difference Result 84086 states and 162119 transitions. [2021-12-06 17:37:04,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-12-06 17:37:04,453 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 12.916666666666666) internal successors, (310), 18 states have internal predecessors, (310), 9 states have call successors, (62), 9 states have call predecessors, (62), 13 states have return successors, (60), 12 states have call predecessors, (60), 9 states have call successors, (60) Word has length 214 [2021-12-06 17:37:04,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:37:04,845 INFO L225 Difference]: With dead ends: 84086 [2021-12-06 17:37:04,845 INFO L226 Difference]: Without dead ends: 63471 [2021-12-06 17:37:05,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 491 SyntacticMatches, 5 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1571 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=963, Invalid=4737, Unknown=0, NotChecked=0, Total=5700 [2021-12-06 17:37:05,032 INFO L933 BasicCegarLoop]: 1840 mSDtfsCounter, 9901 mSDsluCounter, 7066 mSDsCounter, 0 mSdLazyCounter, 20866 mSolverCounterSat, 4484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9910 SdHoareTripleChecker+Valid, 8906 SdHoareTripleChecker+Invalid, 25350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4484 IncrementalHoareTripleChecker+Valid, 20866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:37:05,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9910 Valid, 8906 Invalid, 25350 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4484 Valid, 20866 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2021-12-06 17:37:05,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63471 states. [2021-12-06 17:37:11,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63471 to 45793. [2021-12-06 17:37:11,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45793 states, 35689 states have (on average 1.4923085544565553) internal successors, (53259), 36656 states have internal predecessors, (53259), 7266 states have call successors, (7266), 2206 states have call predecessors, (7266), 2837 states have return successors, (14137), 7200 states have call predecessors, (14137), 7261 states have call successors, (14137) [2021-12-06 17:37:11,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45793 states to 45793 states and 74662 transitions. [2021-12-06 17:37:11,678 INFO L78 Accepts]: Start accepts. Automaton has 45793 states and 74662 transitions. Word has length 214 [2021-12-06 17:37:11,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:37:11,679 INFO L470 AbstractCegarLoop]: Abstraction has 45793 states and 74662 transitions. [2021-12-06 17:37:11,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 12.916666666666666) internal successors, (310), 18 states have internal predecessors, (310), 9 states have call successors, (62), 9 states have call predecessors, (62), 13 states have return successors, (60), 12 states have call predecessors, (60), 9 states have call successors, (60) [2021-12-06 17:37:11,679 INFO L276 IsEmpty]: Start isEmpty. Operand 45793 states and 74662 transitions. [2021-12-06 17:37:11,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-12-06 17:37:11,697 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:37:11,697 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:37:11,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-12-06 17:37:11,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-12-06 17:37:11,899 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:37:11,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:37:11,900 INFO L85 PathProgramCache]: Analyzing trace with hash -568001314, now seen corresponding path program 1 times [2021-12-06 17:37:11,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:37:11,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574414653] [2021-12-06 17:37:11,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:37:11,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:37:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:11,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:37:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:11,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:37:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:11,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:37:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:12,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 17:37:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:12,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:37:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:12,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:37:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:12,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 17:37:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:12,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:37:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:12,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:37:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:12,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:37:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:12,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:37:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:12,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:37:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:12,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:37:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:12,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 17:37:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:12,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:37:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:12,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 17:37:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:12,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:37:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:12,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 17:37:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:12,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 17:37:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:12,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 17:37:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:12,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 17:37:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:12,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 17:37:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:12,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 17:37:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-06 17:37:12,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:37:12,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574414653] [2021-12-06 17:37:12,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574414653] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:37:12,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373468076] [2021-12-06 17:37:12,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:37:12,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:37:12,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:37:12,236 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:37:12,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-12-06 17:37:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:12,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 2289 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 17:37:12,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:37:12,552 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-06 17:37:12,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:37:12,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373468076] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:37:12,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:37:12,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2021-12-06 17:37:12,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137116754] [2021-12-06 17:37:12,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:37:12,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:37:12,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:37:12,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:37:12,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:37:12,553 INFO L87 Difference]: Start difference. First operand 45793 states and 74662 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-06 17:37:18,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:37:18,207 INFO L93 Difference]: Finished difference Result 67097 states and 108862 transitions. [2021-12-06 17:37:18,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:37:18,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 219 [2021-12-06 17:37:18,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:37:18,406 INFO L225 Difference]: With dead ends: 67097 [2021-12-06 17:37:18,406 INFO L226 Difference]: Without dead ends: 45850 [2021-12-06 17:37:18,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:37:18,482 INFO L933 BasicCegarLoop]: 867 mSDtfsCounter, 85 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2560 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:37:18,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 2560 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:37:18,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45850 states. [2021-12-06 17:37:24,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45850 to 45790. [2021-12-06 17:37:24,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45790 states, 35686 states have (on average 1.4923219189598163) internal successors, (53255), 36653 states have internal predecessors, (53255), 7266 states have call successors, (7266), 2206 states have call predecessors, (7266), 2837 states have return successors, (14137), 7200 states have call predecessors, (14137), 7261 states have call successors, (14137) [2021-12-06 17:37:24,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45790 states to 45790 states and 74658 transitions. [2021-12-06 17:37:24,384 INFO L78 Accepts]: Start accepts. Automaton has 45790 states and 74658 transitions. Word has length 219 [2021-12-06 17:37:24,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:37:24,384 INFO L470 AbstractCegarLoop]: Abstraction has 45790 states and 74658 transitions. [2021-12-06 17:37:24,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-06 17:37:24,385 INFO L276 IsEmpty]: Start isEmpty. Operand 45790 states and 74658 transitions. [2021-12-06 17:37:24,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-12-06 17:37:24,402 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:37:24,403 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:37:24,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-12-06 17:37:24,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:37:24,604 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:37:24,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:37:24,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1688058032, now seen corresponding path program 1 times [2021-12-06 17:37:24,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:37:24,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288951317] [2021-12-06 17:37:24,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:37:24,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:37:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:24,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:37:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:24,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:37:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:24,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:37:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:24,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 17:37:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:24,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:37:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:24,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:37:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:24,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 17:37:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:24,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:37:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:24,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:37:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:24,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:37:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:24,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:37:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:24,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:37:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:24,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:37:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:24,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:37:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:24,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:37:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:24,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:37:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:24,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:37:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:24,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 17:37:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:24,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 17:37:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:24,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 17:37:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:24,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 17:37:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:24,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 17:37:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:24,921 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-12-06 17:37:24,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:37:24,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288951317] [2021-12-06 17:37:24,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288951317] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:37:24,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161147380] [2021-12-06 17:37:24,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:37:24,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:37:24,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:37:24,922 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:37:24,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-12-06 17:37:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:25,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 2270 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 17:37:25,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:37:25,265 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-12-06 17:37:25,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:37:25,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161147380] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:37:25,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:37:25,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-12-06 17:37:25,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143613353] [2021-12-06 17:37:25,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:37:25,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:37:25,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:37:25,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:37:25,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:37:25,266 INFO L87 Difference]: Start difference. First operand 45790 states and 74658 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 17:37:30,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:37:30,860 INFO L93 Difference]: Finished difference Result 67031 states and 108777 transitions. [2021-12-06 17:37:30,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:37:30,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 218 [2021-12-06 17:37:30,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:37:31,037 INFO L225 Difference]: With dead ends: 67031 [2021-12-06 17:37:31,037 INFO L226 Difference]: Without dead ends: 45790 [2021-12-06 17:37:31,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:37:31,105 INFO L933 BasicCegarLoop]: 870 mSDtfsCounter, 29 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:37:31,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 2595 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:37:31,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45790 states. [2021-12-06 17:37:36,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45790 to 45784. [2021-12-06 17:37:36,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45784 states, 35680 states have (on average 1.4922926008968609) internal successors, (53245), 36647 states have internal predecessors, (53245), 7266 states have call successors, (7266), 2206 states have call predecessors, (7266), 2837 states have return successors, (14137), 7200 states have call predecessors, (14137), 7261 states have call successors, (14137) [2021-12-06 17:37:36,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45784 states to 45784 states and 74648 transitions. [2021-12-06 17:37:36,821 INFO L78 Accepts]: Start accepts. Automaton has 45784 states and 74648 transitions. Word has length 218 [2021-12-06 17:37:36,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:37:36,822 INFO L470 AbstractCegarLoop]: Abstraction has 45784 states and 74648 transitions. [2021-12-06 17:37:36,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 17:37:36,822 INFO L276 IsEmpty]: Start isEmpty. Operand 45784 states and 74648 transitions. [2021-12-06 17:37:36,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-12-06 17:37:36,841 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:37:36,842 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:37:36,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-12-06 17:37:37,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-12-06 17:37:37,043 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:37:37,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:37:37,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1679947566, now seen corresponding path program 1 times [2021-12-06 17:37:37,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:37:37,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286354656] [2021-12-06 17:37:37,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:37:37,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:37:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:37,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:37:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:37,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:37:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:37,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:37:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:37,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 17:37:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:37,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:37:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:37,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:37:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:37,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 17:37:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:37,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:37:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:37,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:37:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:37,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:37:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:37,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:37:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:37,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:37:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:37,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:37:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:37,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:37:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:37,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:37:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:37,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:37:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:37,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:37:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:37,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 17:37:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:37,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 17:37:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:37,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 17:37:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:37,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 17:37:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:37,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 17:37:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:37,401 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-12-06 17:37:37,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:37:37,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286354656] [2021-12-06 17:37:37,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286354656] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:37:37,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362340684] [2021-12-06 17:37:37,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:37:37,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:37:37,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:37:37,402 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:37:37,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-12-06 17:37:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:37,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 2267 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 17:37:37,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:37:37,828 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 55 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 17:37:37,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:37:38,302 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-06 17:37:38,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362340684] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:37:38,303 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:37:38,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 20 [2021-12-06 17:37:38,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741407721] [2021-12-06 17:37:38,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:37:38,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 17:37:38,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:37:38,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 17:37:38,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-12-06 17:37:38,304 INFO L87 Difference]: Start difference. First operand 45784 states and 74648 transitions. Second operand has 20 states, 20 states have (on average 13.8) internal successors, (276), 14 states have internal predecessors, (276), 7 states have call successors, (53), 9 states have call predecessors, (53), 10 states have return successors, (52), 9 states have call predecessors, (52), 7 states have call successors, (52) [2021-12-06 17:38:07,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:38:07,008 INFO L93 Difference]: Finished difference Result 136444 states and 236804 transitions. [2021-12-06 17:38:07,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-12-06 17:38:07,009 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 13.8) internal successors, (276), 14 states have internal predecessors, (276), 7 states have call successors, (53), 9 states have call predecessors, (53), 10 states have return successors, (52), 9 states have call predecessors, (52), 7 states have call successors, (52) Word has length 218 [2021-12-06 17:38:07,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:38:07,649 INFO L225 Difference]: With dead ends: 136444 [2021-12-06 17:38:07,649 INFO L226 Difference]: Without dead ends: 113002 [2021-12-06 17:38:07,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 490 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=533, Invalid=2329, Unknown=0, NotChecked=0, Total=2862 [2021-12-06 17:38:07,803 INFO L933 BasicCegarLoop]: 1698 mSDtfsCounter, 5147 mSDsluCounter, 5346 mSDsCounter, 0 mSdLazyCounter, 16050 mSolverCounterSat, 2215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5161 SdHoareTripleChecker+Valid, 7044 SdHoareTripleChecker+Invalid, 18265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2215 IncrementalHoareTripleChecker+Valid, 16050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:38:07,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5161 Valid, 7044 Invalid, 18265 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2215 Valid, 16050 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2021-12-06 17:38:07,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113002 states. [2021-12-06 17:38:20,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113002 to 96539. [2021-12-06 17:38:20,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96539 states, 74617 states have (on average 1.4937614752670303) internal successors, (111460), 76764 states have internal predecessors, (111460), 15901 states have call successors, (15901), 4397 states have call predecessors, (15901), 6020 states have return successors, (31487), 16057 states have call predecessors, (31487), 15896 states have call successors, (31487) [2021-12-06 17:38:21,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96539 states to 96539 states and 158848 transitions. [2021-12-06 17:38:21,308 INFO L78 Accepts]: Start accepts. Automaton has 96539 states and 158848 transitions. Word has length 218 [2021-12-06 17:38:21,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:38:21,308 INFO L470 AbstractCegarLoop]: Abstraction has 96539 states and 158848 transitions. [2021-12-06 17:38:21,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 13.8) internal successors, (276), 14 states have internal predecessors, (276), 7 states have call successors, (53), 9 states have call predecessors, (53), 10 states have return successors, (52), 9 states have call predecessors, (52), 7 states have call successors, (52) [2021-12-06 17:38:21,309 INFO L276 IsEmpty]: Start isEmpty. Operand 96539 states and 158848 transitions. [2021-12-06 17:38:21,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2021-12-06 17:38:21,335 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:38:21,336 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:38:21,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-12-06 17:38:21,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:38:21,537 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:38:21,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:38:21,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1134379619, now seen corresponding path program 1 times [2021-12-06 17:38:21,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:38:21,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247364302] [2021-12-06 17:38:21,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:38:21,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:38:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:38:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:38:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:38:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:38:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:38:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:38:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:38:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:38:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:38:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:38:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:38:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:38:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:38:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:38:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 17:38:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 17:38:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:38:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 17:38:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 17:38:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 17:38:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 17:38:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:38:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:38:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:38:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:21,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 17:38:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:22,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 17:38:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:22,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:38:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:22,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 17:38:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:22,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 17:38:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:22,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:38:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:22,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 17:38:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:22,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:38:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:22,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 17:38:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:22,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 17:38:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:22,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 17:38:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:22,036 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 4 proven. 66 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2021-12-06 17:38:22,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:38:22,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247364302] [2021-12-06 17:38:22,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247364302] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:38:22,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403598252] [2021-12-06 17:38:22,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:38:22,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:38:22,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:38:22,038 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:38:22,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-12-06 17:38:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:38:22,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 3117 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 17:38:22,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:38:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-12-06 17:38:22,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:38:22,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403598252] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:38:22,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:38:22,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2021-12-06 17:38:22,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350016154] [2021-12-06 17:38:22,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:38:22,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:38:22,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:38:22,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:38:22,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:38:22,481 INFO L87 Difference]: Start difference. First operand 96539 states and 158848 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-12-06 17:38:42,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:38:42,728 INFO L93 Difference]: Finished difference Result 211465 states and 356624 transitions. [2021-12-06 17:38:42,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:38:42,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 324 [2021-12-06 17:38:42,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:38:43,782 INFO L225 Difference]: With dead ends: 211465 [2021-12-06 17:38:43,782 INFO L226 Difference]: Without dead ends: 154002 [2021-12-06 17:38:44,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:38:44,215 INFO L933 BasicCegarLoop]: 1050 mSDtfsCounter, 874 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:38:44,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [874 Valid, 1823 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:38:44,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154002 states. [2021-12-06 17:39:04,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154002 to 153985. [2021-12-06 17:39:04,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153985 states, 118612 states have (on average 1.4949330590496746) internal successors, (177317), 122106 states have internal predecessors, (177317), 25925 states have call successors, (25925), 6879 states have call predecessors, (25925), 9447 states have return successors, (55104), 26359 states have call predecessors, (55104), 25920 states have call successors, (55104) [2021-12-06 17:39:05,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153985 states to 153985 states and 258346 transitions. [2021-12-06 17:39:05,814 INFO L78 Accepts]: Start accepts. Automaton has 153985 states and 258346 transitions. Word has length 324 [2021-12-06 17:39:05,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:39:05,815 INFO L470 AbstractCegarLoop]: Abstraction has 153985 states and 258346 transitions. [2021-12-06 17:39:05,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-12-06 17:39:05,815 INFO L276 IsEmpty]: Start isEmpty. Operand 153985 states and 258346 transitions. [2021-12-06 17:39:05,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-12-06 17:39:05,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:39:05,848 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:39:05,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2021-12-06 17:39:06,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:39:06,050 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:39:06,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:39:06,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1704065679, now seen corresponding path program 1 times [2021-12-06 17:39:06,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:39:06,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333259667] [2021-12-06 17:39:06,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:39:06,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:39:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:39:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:39:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:39:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:39:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:39:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:39:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:39:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:39:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:39:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:39:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:39:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:39:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:39:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:39:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 17:39:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 17:39:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:39:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 17:39:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 17:39:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 17:39:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 17:39:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:39:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:39:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:39:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:39:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:39:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:39:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:39:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 17:39:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:39:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:39:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:39:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:39:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 17:39:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 17:39:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 17:39:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 17:39:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 17:39:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,607 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 4 proven. 66 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-12-06 17:39:06,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:39:06,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333259667] [2021-12-06 17:39:06,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333259667] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:39:06,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503804456] [2021-12-06 17:39:06,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:39:06,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:39:06,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:39:06,608 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:39:06,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-12-06 17:39:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:06,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 3283 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:39:06,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:39:07,106 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2021-12-06 17:39:07,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:39:07,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503804456] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:39:07,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:39:07,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [14] total 15 [2021-12-06 17:39:07,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742407362] [2021-12-06 17:39:07,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:39:07,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:39:07,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:39:07,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:39:07,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:39:07,107 INFO L87 Difference]: Start difference. First operand 153985 states and 258346 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 1 states have call successors, (28) [2021-12-06 17:39:28,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:39:28,561 INFO L93 Difference]: Finished difference Result 304335 states and 523337 transitions. [2021-12-06 17:39:28,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:39:28,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 1 states have call successors, (28) Word has length 333 [2021-12-06 17:39:28,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:39:29,500 INFO L225 Difference]: With dead ends: 304335 [2021-12-06 17:39:29,500 INFO L226 Difference]: Without dead ends: 150468 [2021-12-06 17:39:30,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:39:30,466 INFO L933 BasicCegarLoop]: 867 mSDtfsCounter, 857 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:39:30,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [857 Valid, 867 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:39:30,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150468 states. [2021-12-06 17:39:50,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150468 to 150468. [2021-12-06 17:39:50,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150468 states, 116268 states have (on average 1.4847421474524374) internal successors, (172628), 119761 states have internal predecessors, (172628), 24752 states have call successors, (24752), 6879 states have call predecessors, (24752), 9447 states have return successors, (53932), 25187 states have call predecessors, (53932), 24748 states have call successors, (53932) [2021-12-06 17:39:51,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150468 states to 150468 states and 251312 transitions. [2021-12-06 17:39:51,810 INFO L78 Accepts]: Start accepts. Automaton has 150468 states and 251312 transitions. Word has length 333 [2021-12-06 17:39:51,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:39:51,810 INFO L470 AbstractCegarLoop]: Abstraction has 150468 states and 251312 transitions. [2021-12-06 17:39:51,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 1 states have call successors, (28) [2021-12-06 17:39:51,810 INFO L276 IsEmpty]: Start isEmpty. Operand 150468 states and 251312 transitions. [2021-12-06 17:39:51,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-12-06 17:39:51,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:39:51,845 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:39:51,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-12-06 17:39:52,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-12-06 17:39:52,047 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:39:52,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:39:52,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1445374557, now seen corresponding path program 1 times [2021-12-06 17:39:52,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:39:52,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849907978] [2021-12-06 17:39:52,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:39:52,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:39:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:39:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:39:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:39:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:39:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:39:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:39:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:39:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:39:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:39:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:39:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:39:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:39:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:39:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:39:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 17:39:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 17:39:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:39:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 17:39:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 17:39:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 17:39:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 17:39:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:39:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:39:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:39:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:39:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:39:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:39:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:39:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:39:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-12-06 17:39:52,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:39:52,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849907978] [2021-12-06 17:39:52,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849907978] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:39:52,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520487410] [2021-12-06 17:39:52,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:39:52,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:39:52,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:39:52,562 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:39:52,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-12-06 17:39:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:39:52,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 2885 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:39:52,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:39:52,960 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-06 17:39:52,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:39:52,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520487410] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:39:52,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:39:52,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-12-06 17:39:52,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162148657] [2021-12-06 17:39:52,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:39:52,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:39:52,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:39:52,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:39:52,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:39:52,961 INFO L87 Difference]: Start difference. First operand 150468 states and 251312 transitions. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-06 17:40:14,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:40:14,744 INFO L93 Difference]: Finished difference Result 305450 states and 522914 transitions. [2021-12-06 17:40:14,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:40:14,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 275 [2021-12-06 17:40:14,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:40:15,684 INFO L225 Difference]: With dead ends: 305450 [2021-12-06 17:40:15,684 INFO L226 Difference]: Without dead ends: 155148 [2021-12-06 17:40:16,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:40:16,643 INFO L933 BasicCegarLoop]: 802 mSDtfsCounter, 213 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:40:16,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 2382 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:40:16,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155148 states. [2021-12-06 17:40:36,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155148 to 155148. [2021-12-06 17:40:36,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155148 states, 120828 states have (on average 1.5012083291952196) internal successors, (181388), 124321 states have internal predecessors, (181388), 24752 states have call successors, (24752), 6999 states have call predecessors, (24752), 9567 states have return successors, (53932), 25187 states have call predecessors, (53932), 24748 states have call successors, (53932) [2021-12-06 17:40:37,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155148 states to 155148 states and 260072 transitions. [2021-12-06 17:40:37,808 INFO L78 Accepts]: Start accepts. Automaton has 155148 states and 260072 transitions. Word has length 275 [2021-12-06 17:40:37,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:40:37,809 INFO L470 AbstractCegarLoop]: Abstraction has 155148 states and 260072 transitions. [2021-12-06 17:40:37,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-06 17:40:37,809 INFO L276 IsEmpty]: Start isEmpty. Operand 155148 states and 260072 transitions. [2021-12-06 17:40:37,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2021-12-06 17:40:37,850 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:40:37,850 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:40:37,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-12-06 17:40:38,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:40:38,052 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:40:38,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:40:38,053 INFO L85 PathProgramCache]: Analyzing trace with hash 821759430, now seen corresponding path program 1 times [2021-12-06 17:40:38,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:40:38,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337910066] [2021-12-06 17:40:38,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:40:38,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:40:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:40:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:40:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:40:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:40:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:40:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:40:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:40:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:40:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:40:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:40:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:40:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:40:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:40:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:40:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:40:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 17:40:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 17:40:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 17:40:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:40:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 17:40:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 17:40:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:40:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:40:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:40:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 17:40:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:40:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:40:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:40:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:40:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:40:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:40:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-12-06 17:40:38,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:40:38,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337910066] [2021-12-06 17:40:38,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337910066] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:40:38,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870064047] [2021-12-06 17:40:38,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:40:38,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:40:38,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:40:38,589 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:40:38,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-12-06 17:40:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:40:38,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 2935 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:40:38,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:40:38,999 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-06 17:40:38,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:40:38,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870064047] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:40:38,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:40:38,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-12-06 17:40:38,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955833881] [2021-12-06 17:40:38,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:40:39,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:40:39,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:40:39,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:40:39,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:40:39,000 INFO L87 Difference]: Start difference. First operand 155148 states and 260072 transitions. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-06 17:41:01,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:41:01,073 INFO L93 Difference]: Finished difference Result 314810 states and 540154 transitions. [2021-12-06 17:41:01,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:41:01,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 288 [2021-12-06 17:41:01,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:41:02,165 INFO L225 Difference]: With dead ends: 314810 [2021-12-06 17:41:02,165 INFO L226 Difference]: Without dead ends: 159828 [2021-12-06 17:41:03,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:41:03,170 INFO L933 BasicCegarLoop]: 802 mSDtfsCounter, 211 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:41:03,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 2382 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:41:03,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159828 states. [2021-12-06 17:41:23,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159828 to 159828. [2021-12-06 17:41:23,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159828 states, 125388 states have (on average 1.5164768558394743) internal successors, (190148), 128881 states have internal predecessors, (190148), 24752 states have call successors, (24752), 7119 states have call predecessors, (24752), 9687 states have return successors, (53932), 25187 states have call predecessors, (53932), 24748 states have call successors, (53932) [2021-12-06 17:41:24,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159828 states to 159828 states and 268832 transitions. [2021-12-06 17:41:24,771 INFO L78 Accepts]: Start accepts. Automaton has 159828 states and 268832 transitions. Word has length 288 [2021-12-06 17:41:24,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:41:24,771 INFO L470 AbstractCegarLoop]: Abstraction has 159828 states and 268832 transitions. [2021-12-06 17:41:24,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-06 17:41:24,771 INFO L276 IsEmpty]: Start isEmpty. Operand 159828 states and 268832 transitions. [2021-12-06 17:41:24,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-12-06 17:41:24,928 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:41:24,928 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:41:24,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-12-06 17:41:25,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-12-06 17:41:25,130 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:41:25,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:41:25,131 INFO L85 PathProgramCache]: Analyzing trace with hash -416704896, now seen corresponding path program 1 times [2021-12-06 17:41:25,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:41:25,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521906412] [2021-12-06 17:41:25,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:41:25,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:41:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:41:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:41:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:41:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:41:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:41:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:41:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:41:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:41:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:41:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:41:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:41:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:41:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:41:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:41:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 17:41:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 17:41:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:41:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 17:41:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 17:41:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 17:41:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 17:41:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:41:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:41:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:41:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 17:41:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:41:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:41:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 17:41:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 17:41:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:41:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 17:41:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:41:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 17:41:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 17:41:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,650 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 15 proven. 69 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2021-12-06 17:41:25,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:41:25,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521906412] [2021-12-06 17:41:25,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521906412] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:41:25,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935554256] [2021-12-06 17:41:25,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:41:25,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:41:25,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:41:25,652 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:41:25,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-12-06 17:41:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:41:25,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 3121 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:41:25,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:41:26,144 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-12-06 17:41:26,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:41:26,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935554256] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:41:26,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:41:26,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-12-06 17:41:26,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35199657] [2021-12-06 17:41:26,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:41:26,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:41:26,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:41:26,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:41:26,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:41:26,146 INFO L87 Difference]: Start difference. First operand 159828 states and 268832 transitions. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-06 17:41:46,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:41:46,900 INFO L93 Difference]: Finished difference Result 324170 states and 557374 transitions. [2021-12-06 17:41:46,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:41:46,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 339 [2021-12-06 17:41:46,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:41:48,009 INFO L225 Difference]: With dead ends: 324170 [2021-12-06 17:41:48,009 INFO L226 Difference]: Without dead ends: 164508 [2021-12-06 17:41:48,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:41:48,811 INFO L933 BasicCegarLoop]: 802 mSDtfsCounter, 209 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:41:48,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 2382 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:41:48,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164508 states. [2021-12-06 17:42:08,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164508 to 164508. [2021-12-06 17:42:08,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164508 states, 129948 states have (on average 1.5306738079847324) internal successors, (198908), 133441 states have internal predecessors, (198908), 24752 states have call successors, (24752), 7239 states have call predecessors, (24752), 9807 states have return successors, (53932), 25187 states have call predecessors, (53932), 24748 states have call successors, (53932) [2021-12-06 17:42:09,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164508 states to 164508 states and 277592 transitions. [2021-12-06 17:42:09,753 INFO L78 Accepts]: Start accepts. Automaton has 164508 states and 277592 transitions. Word has length 339 [2021-12-06 17:42:09,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:42:09,753 INFO L470 AbstractCegarLoop]: Abstraction has 164508 states and 277592 transitions. [2021-12-06 17:42:09,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-06 17:42:09,753 INFO L276 IsEmpty]: Start isEmpty. Operand 164508 states and 277592 transitions. [2021-12-06 17:42:09,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-12-06 17:42:09,800 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:42:09,801 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:42:09,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2021-12-06 17:42:10,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-12-06 17:42:10,002 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:42:10,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:42:10,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1662336618, now seen corresponding path program 1 times [2021-12-06 17:42:10,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:42:10,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407755696] [2021-12-06 17:42:10,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:42:10,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:42:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:42:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:42:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:42:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:42:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:42:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:42:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:42:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:42:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:42:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:42:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:42:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:42:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:42:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:42:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 17:42:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:42:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 17:42:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 17:42:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 17:42:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 17:42:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 17:42:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:42:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:42:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:42:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:42:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:42:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 17:42:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:42:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 17:42:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:42:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,451 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 22 proven. 19 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-12-06 17:42:10,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:42:10,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407755696] [2021-12-06 17:42:10,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407755696] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:42:10,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012819210] [2021-12-06 17:42:10,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:42:10,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:42:10,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:42:10,452 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:42:10,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-12-06 17:42:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:10,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 2923 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:42:10,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:42:10,867 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-06 17:42:10,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:42:10,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012819210] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:42:10,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:42:10,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-12-06 17:42:10,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767094807] [2021-12-06 17:42:10,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:42:10,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:42:10,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:42:10,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:42:10,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:42:10,868 INFO L87 Difference]: Start difference. First operand 164508 states and 277592 transitions. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-06 17:42:31,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:42:31,710 INFO L93 Difference]: Finished difference Result 333530 states and 574594 transitions. [2021-12-06 17:42:31,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:42:31,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 289 [2021-12-06 17:42:31,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:42:32,875 INFO L225 Difference]: With dead ends: 333530 [2021-12-06 17:42:32,875 INFO L226 Difference]: Without dead ends: 169188 [2021-12-06 17:42:33,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:42:33,712 INFO L933 BasicCegarLoop]: 802 mSDtfsCounter, 207 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:42:33,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 2382 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:42:33,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169188 states. [2021-12-06 17:42:53,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169188 to 169188. [2021-12-06 17:42:53,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169188 states, 134508 states have (on average 1.5439081690308383) internal successors, (207668), 138001 states have internal predecessors, (207668), 24752 states have call successors, (24752), 7359 states have call predecessors, (24752), 9927 states have return successors, (53932), 25187 states have call predecessors, (53932), 24748 states have call successors, (53932) [2021-12-06 17:42:54,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169188 states to 169188 states and 286352 transitions. [2021-12-06 17:42:54,737 INFO L78 Accepts]: Start accepts. Automaton has 169188 states and 286352 transitions. Word has length 289 [2021-12-06 17:42:54,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:42:54,738 INFO L470 AbstractCegarLoop]: Abstraction has 169188 states and 286352 transitions. [2021-12-06 17:42:54,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-06 17:42:54,738 INFO L276 IsEmpty]: Start isEmpty. Operand 169188 states and 286352 transitions. [2021-12-06 17:42:54,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2021-12-06 17:42:54,789 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:42:54,789 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 8, 6, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:42:54,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-12-06 17:42:54,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-12-06 17:42:54,991 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:42:54,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:42:54,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1086495348, now seen corresponding path program 1 times [2021-12-06 17:42:54,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:42:54,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39299368] [2021-12-06 17:42:54,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:42:54,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:42:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:42:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:42:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:42:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:42:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:42:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:42:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:42:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:42:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:42:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:42:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:42:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:42:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:42:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:42:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 17:42:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:42:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:42:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 17:42:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 17:42:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 17:42:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:42:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:42:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:42:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:42:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:42:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:42:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 17:42:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:42:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 17:42:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 17:42:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 17:42:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:42:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 17:42:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 17:42:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 17:42:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 17:42:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 17:42:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,524 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2021-12-06 17:42:55,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:42:55,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39299368] [2021-12-06 17:42:55,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39299368] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:42:55,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357584178] [2021-12-06 17:42:55,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:42:55,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:42:55,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:42:55,525 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:42:55,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-12-06 17:42:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:55,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 3301 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:42:55,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:42:56,014 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-12-06 17:42:56,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:42:56,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357584178] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:42:56,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:42:56,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2021-12-06 17:42:56,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055584986] [2021-12-06 17:42:56,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:42:56,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:42:56,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:42:56,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:42:56,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:42:56,016 INFO L87 Difference]: Start difference. First operand 169188 states and 286352 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-12-06 17:43:17,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:43:17,067 INFO L93 Difference]: Finished difference Result 342890 states and 591814 transitions. [2021-12-06 17:43:17,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:43:17,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 362 [2021-12-06 17:43:17,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:43:18,120 INFO L225 Difference]: With dead ends: 342890 [2021-12-06 17:43:18,120 INFO L226 Difference]: Without dead ends: 173868 [2021-12-06 17:43:19,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:43:19,123 INFO L933 BasicCegarLoop]: 802 mSDtfsCounter, 205 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:43:19,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 2382 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:43:19,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173868 states. [2021-12-06 17:43:39,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173868 to 173868. [2021-12-06 17:43:39,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173868 states, 139068 states have (on average 1.5562746282394224) internal successors, (216428), 142561 states have internal predecessors, (216428), 24752 states have call successors, (24752), 7479 states have call predecessors, (24752), 10047 states have return successors, (53932), 25187 states have call predecessors, (53932), 24748 states have call successors, (53932) [2021-12-06 17:43:40,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173868 states to 173868 states and 295112 transitions. [2021-12-06 17:43:40,396 INFO L78 Accepts]: Start accepts. Automaton has 173868 states and 295112 transitions. Word has length 362 [2021-12-06 17:43:40,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:43:40,397 INFO L470 AbstractCegarLoop]: Abstraction has 173868 states and 295112 transitions. [2021-12-06 17:43:40,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-12-06 17:43:40,397 INFO L276 IsEmpty]: Start isEmpty. Operand 173868 states and 295112 transitions. [2021-12-06 17:43:40,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2021-12-06 17:43:40,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:43:40,448 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 8, 6, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:43:40,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-12-06 17:43:40,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-12-06 17:43:40,650 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:43:40,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:43:40,651 INFO L85 PathProgramCache]: Analyzing trace with hash -153611199, now seen corresponding path program 1 times [2021-12-06 17:43:40,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:43:40,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215694801] [2021-12-06 17:43:40,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:43:40,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:43:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:40,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:43:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:40,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:43:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:40,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:43:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:40,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:43:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:40,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:43:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:40,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:43:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:40,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:43:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:40,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:43:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:40,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:43:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:43:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:43:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:43:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:43:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:43:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 17:43:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:43:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:43:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 17:43:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 17:43:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 17:43:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:43:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:43:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:43:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:43:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:43:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:43:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 17:43:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:43:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:43:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 17:43:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:43:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:43:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 17:43:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 17:43:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 17:43:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 17:43:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 17:43:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,305 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 53 proven. 58 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2021-12-06 17:43:41,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:43:41,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215694801] [2021-12-06 17:43:41,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215694801] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:43:41,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776096824] [2021-12-06 17:43:41,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:43:41,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:43:41,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:43:41,306 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:43:41,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-12-06 17:43:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:41,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 3294 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 17:43:41,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:43:42,020 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-12-06 17:43:42,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:43:42,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776096824] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:43:42,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:43:42,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [22] total 28 [2021-12-06 17:43:42,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606691007] [2021-12-06 17:43:42,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:43:42,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:43:42,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:43:42,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:43:42,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2021-12-06 17:43:42,022 INFO L87 Difference]: Start difference. First operand 173868 states and 295112 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 5 states have call successors, (35), 5 states have call predecessors, (35), 6 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36) [2021-12-06 17:44:02,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:44:02,885 INFO L93 Difference]: Finished difference Result 318748 states and 542766 transitions. [2021-12-06 17:44:02,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 17:44:02,886 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 5 states have call successors, (35), 5 states have call predecessors, (35), 6 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36) Word has length 361 [2021-12-06 17:44:02,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:44:03,966 INFO L225 Difference]: With dead ends: 318748 [2021-12-06 17:44:03,966 INFO L226 Difference]: Without dead ends: 154046 [2021-12-06 17:44:04,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=1245, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 17:44:04,623 INFO L933 BasicCegarLoop]: 1405 mSDtfsCounter, 2772 mSDsluCounter, 2261 mSDsCounter, 0 mSdLazyCounter, 4349 mSolverCounterSat, 693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2893 SdHoareTripleChecker+Valid, 3666 SdHoareTripleChecker+Invalid, 5042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 4349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:44:04,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2893 Valid, 3666 Invalid, 5042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 4349 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 17:44:04,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154046 states. [2021-12-06 17:44:22,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154046 to 151722. [2021-12-06 17:44:22,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151722 states, 121336 states have (on average 1.5456583371794026) internal successors, (187544), 124438 states have internal predecessors, (187544), 21434 states have call successors, (21434), 6519 states have call predecessors, (21434), 8951 states have return successors, (47244), 21852 states have call predecessors, (47244), 21430 states have call successors, (47244) [2021-12-06 17:44:23,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151722 states to 151722 states and 256222 transitions. [2021-12-06 17:44:23,482 INFO L78 Accepts]: Start accepts. Automaton has 151722 states and 256222 transitions. Word has length 361 [2021-12-06 17:44:23,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:44:23,483 INFO L470 AbstractCegarLoop]: Abstraction has 151722 states and 256222 transitions. [2021-12-06 17:44:23,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 5 states have call successors, (35), 5 states have call predecessors, (35), 6 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36) [2021-12-06 17:44:23,483 INFO L276 IsEmpty]: Start isEmpty. Operand 151722 states and 256222 transitions. [2021-12-06 17:44:23,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-12-06 17:44:23,518 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:44:23,518 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 8, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 17:44:23,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-12-06 17:44:23,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:44:23,720 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:44:23,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:44:23,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1966041285, now seen corresponding path program 1 times [2021-12-06 17:44:23,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:44:23,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722970586] [2021-12-06 17:44:23,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:23,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:44:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:23,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:44:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:23,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:23,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:44:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:23,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:44:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:23,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:23,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:44:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:44:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:44:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:44:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:44:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:44:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 17:44:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:44:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:44:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 17:44:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 17:44:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 17:44:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:44:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:44:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:44:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:44:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:44:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 17:44:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:44:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:44:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 17:44:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,302 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 15 proven. 74 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2021-12-06 17:44:24,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:44:24,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722970586] [2021-12-06 17:44:24,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722970586] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:44:24,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652820118] [2021-12-06 17:44:24,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:24,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:44:24,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:44:24,304 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:44:24,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-12-06 17:44:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 2995 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 17:44:24,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:44:24,869 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2021-12-06 17:44:24,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:44:24,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652820118] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:44:24,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:44:24,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 21 [2021-12-06 17:44:24,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17891186] [2021-12-06 17:44:24,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:44:24,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:44:24,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:44:24,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:44:24,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2021-12-06 17:44:24,870 INFO L87 Difference]: Start difference. First operand 151722 states and 256222 transitions. Second operand has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 4 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (29), 5 states have call predecessors, (29), 3 states have call successors, (29) [2021-12-06 17:44:47,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:44:47,403 INFO L93 Difference]: Finished difference Result 317680 states and 542306 transitions. [2021-12-06 17:44:47,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 17:44:47,405 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 4 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (29), 5 states have call predecessors, (29), 3 states have call successors, (29) Word has length 326 [2021-12-06 17:44:47,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:44:48,543 INFO L225 Difference]: With dead ends: 317680 [2021-12-06 17:44:48,543 INFO L226 Difference]: Without dead ends: 166036 [2021-12-06 17:44:49,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2021-12-06 17:44:49,290 INFO L933 BasicCegarLoop]: 951 mSDtfsCounter, 1773 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 4040 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1847 SdHoareTripleChecker+Valid, 2848 SdHoareTripleChecker+Invalid, 4456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 4040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:44:49,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1847 Valid, 2848 Invalid, 4456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 4040 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-06 17:44:49,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166036 states. [2021-12-06 17:45:09,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166036 to 161426. [2021-12-06 17:45:09,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161426 states, 129034 states have (on average 1.5463908737232048) internal successors, (199537), 132248 states have internal predecessors, (199537), 22957 states have call successors, (22957), 6847 states have call predecessors, (22957), 9434 states have return successors, (50906), 23420 states have call predecessors, (50906), 22953 states have call successors, (50906) [2021-12-06 17:45:11,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161426 states to 161426 states and 273400 transitions. [2021-12-06 17:45:11,051 INFO L78 Accepts]: Start accepts. Automaton has 161426 states and 273400 transitions. Word has length 326 [2021-12-06 17:45:11,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:45:11,051 INFO L470 AbstractCegarLoop]: Abstraction has 161426 states and 273400 transitions. [2021-12-06 17:45:11,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 4 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (29), 5 states have call predecessors, (29), 3 states have call successors, (29) [2021-12-06 17:45:11,052 INFO L276 IsEmpty]: Start isEmpty. Operand 161426 states and 273400 transitions. [2021-12-06 17:45:11,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-12-06 17:45:11,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:45:11,087 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:45:11,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-12-06 17:45:11,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-12-06 17:45:11,289 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:45:11,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:45:11,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1023868038, now seen corresponding path program 1 times [2021-12-06 17:45:11,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:45:11,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441579395] [2021-12-06 17:45:11,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:45:11,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:45:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:11,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:45:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:11,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:11,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:45:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:11,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:45:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:11,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:11,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:45:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:11,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:45:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:11,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:11,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:11,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:45:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:11,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:11,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 17:45:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:11,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:45:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:11,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:45:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:11,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 17:45:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:11,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:45:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:11,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:45:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:11,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 17:45:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:11,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 17:45:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:11,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 17:45:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:11,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:45:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:12,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:12,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:45:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:12,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:12,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:45:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:12,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:45:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:12,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:45:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:12,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:45:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:12,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:45:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 15 proven. 25 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-06 17:45:12,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:45:12,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441579395] [2021-12-06 17:45:12,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441579395] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:45:12,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143917587] [2021-12-06 17:45:12,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:45:12,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:45:12,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:45:12,041 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:45:12,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1612a634-6ca9-424f-9b9d-d29325f1fa59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-12-06 17:45:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:12,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 2899 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 17:45:12,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:45:12,563 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-06 17:45:12,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:45:12,860 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-06 17:45:12,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143917587] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:45:12,860 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:45:12,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 7] total 25 [2021-12-06 17:45:12,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952905382] [2021-12-06 17:45:12,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:45:12,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 17:45:12,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:45:12,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 17:45:12,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2021-12-06 17:45:12,862 INFO L87 Difference]: Start difference. First operand 161426 states and 273400 transitions. Second operand has 25 states, 25 states have (on average 17.6) internal successors, (440), 20 states have internal predecessors, (440), 9 states have call successors, (73), 8 states have call predecessors, (73), 8 states have return successors, (72), 11 states have call predecessors, (72), 9 states have call successors, (72)