./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8 --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 d96f41c83679efe744540e7fde7918287d6cc79be28bb1ad9b63bf8e0d07ce19 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 16:48:54,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:48:54,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:48:54,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:48:54,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:48:54,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:48:54,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:48:54,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:48:54,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:48:54,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:48:54,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:48:54,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:48:54,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:48:54,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:48:54,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:48:54,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:48:54,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:48:54,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:48:54,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:48:54,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:48:54,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:48:54,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:48:54,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:48:54,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:48:54,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:48:54,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:48:54,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:48:54,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:48:54,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:48:54,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:48:54,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:48:54,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:48:54,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:48:54,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:48:54,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:48:54,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:48:54,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:48:54,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:48:54,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:48:54,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:48:54,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:48:54,704 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 16:48:54,724 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:48:54,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:48:54,725 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:48:54,725 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:48:54,726 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:48:54,726 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:48:54,727 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:48:54,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:48:54,727 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:48:54,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:48:54,727 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:48:54,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:48:54,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:48:54,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:48:54,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:48:54,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:48:54,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:48:54,729 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:48:54,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:48:54,729 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:48:54,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:48:54,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:48:54,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:48:54,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:48:54,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:48:54,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:48:54,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:48:54,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:48:54,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:48:54,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:48:54,731 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:48:54,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:48:54,732 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:48:54,732 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:48:54,732 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:48:54,732 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d96f41c83679efe744540e7fde7918287d6cc79be28bb1ad9b63bf8e0d07ce19 [2022-12-13 16:48:54,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:48:54,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:48:54,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:48:54,957 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:48:54,957 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:48:54,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c [2022-12-13 16:48:57,528 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:48:57,792 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:48:57,792 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c [2022-12-13 16:48:57,810 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/data/2612243da/185297f2bbe6409b8d62bac105f292ea/FLAGd21f2a83e [2022-12-13 16:48:58,105 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/data/2612243da/185297f2bbe6409b8d62bac105f292ea [2022-12-13 16:48:58,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:48:58,108 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:48:58,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:48:58,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:48:58,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:48:58,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:48:58" (1/1) ... [2022-12-13 16:48:58,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68335f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:48:58, skipping insertion in model container [2022-12-13 16:48:58,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:48:58" (1/1) ... [2022-12-13 16:48:58,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:48:58,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:48:58,377 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c[34453,34466] [2022-12-13 16:48:58,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:48:58,482 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:48:58,522 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c[34453,34466] [2022-12-13 16:48:58,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:48:58,566 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:48:58,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:48:58 WrapperNode [2022-12-13 16:48:58,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:48:58,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:48:58,567 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:48:58,568 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:48:58,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:48:58" (1/1) ... [2022-12-13 16:48:58,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:48:58" (1/1) ... [2022-12-13 16:48:58,631 INFO L138 Inliner]: procedures = 94, calls = 340, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1119 [2022-12-13 16:48:58,631 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:48:58,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:48:58,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:48:58,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:48:58,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:48:58" (1/1) ... [2022-12-13 16:48:58,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:48:58" (1/1) ... [2022-12-13 16:48:58,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:48:58" (1/1) ... [2022-12-13 16:48:58,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:48:58" (1/1) ... [2022-12-13 16:48:58,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:48:58" (1/1) ... [2022-12-13 16:48:58,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:48:58" (1/1) ... [2022-12-13 16:48:58,663 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:48:58" (1/1) ... [2022-12-13 16:48:58,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:48:58" (1/1) ... [2022-12-13 16:48:58,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:48:58,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:48:58,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:48:58,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:48:58,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:48:58" (1/1) ... [2022-12-13 16:48:58,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:48:58,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:48:58,701 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:48:58,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:48:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:48:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-12-13 16:48:58,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-12-13 16:48:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-12-13 16:48:58,737 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-12-13 16:48:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2022-12-13 16:48:58,737 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2022-12-13 16:48:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-12-13 16:48:58,738 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-12-13 16:48:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-12-13 16:48:58,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-12-13 16:48:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-12-13 16:48:58,738 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-12-13 16:48:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-12-13 16:48:58,738 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-12-13 16:48:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-13 16:48:58,739 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-13 16:48:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-13 16:48:58,739 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-13 16:48:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-12-13 16:48:58,739 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-12-13 16:48:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-13 16:48:58,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-13 16:48:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-12-13 16:48:58,739 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-12-13 16:48:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-12-13 16:48:58,740 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-12-13 16:48:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-12-13 16:48:58,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-12-13 16:48:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-12-13 16:48:58,740 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-12-13 16:48:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-12-13 16:48:58,740 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-12-13 16:48:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-12-13 16:48:58,740 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-12-13 16:48:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-12-13 16:48:58,741 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-12-13 16:48:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-12-13 16:48:58,741 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-12-13 16:48:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-12-13 16:48:58,741 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-12-13 16:48:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:48:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-12-13 16:48:58,741 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-12-13 16:48:58,742 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-12-13 16:48:58,742 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-12-13 16:48:58,742 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-12-13 16:48:58,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-12-13 16:48:58,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:48:58,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:48:58,742 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-12-13 16:48:58,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-12-13 16:48:58,858 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:48:58,860 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:48:59,627 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:48:59,640 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:48:59,640 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 16:48:59,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:48:59 BoogieIcfgContainer [2022-12-13 16:48:59,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:48:59,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:48:59,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:48:59,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:48:59,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:48:58" (1/3) ... [2022-12-13 16:48:59,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d4a40d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:48:59, skipping insertion in model container [2022-12-13 16:48:59,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:48:58" (2/3) ... [2022-12-13 16:48:59,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d4a40d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:48:59, skipping insertion in model container [2022-12-13 16:48:59,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:48:59" (3/3) ... [2022-12-13 16:48:59,651 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product19.cil.c [2022-12-13 16:48:59,669 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:48:59,670 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 16:48:59,728 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:48:59,735 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1aab1eb4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:48:59,735 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 16:48:59,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 560 states, 438 states have (on average 1.6894977168949772) internal successors, (740), 459 states have internal predecessors, (740), 96 states have call successors, (96), 24 states have call predecessors, (96), 24 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) [2022-12-13 16:48:59,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 16:48:59,766 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:48:59,767 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:48:59,768 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:48:59,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:48:59,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1065418536, now seen corresponding path program 1 times [2022-12-13 16:48:59,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:48:59,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551716459] [2022-12-13 16:48:59,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:48:59,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:48:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:00,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:49:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:00,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:00,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 16:49:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:00,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 16:49:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:00,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:00,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:00,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:00,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 16:49:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:00,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 16:49:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:00,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:00,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:00,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 16:49:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:00,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 16:49:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:49:00,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:49:00,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551716459] [2022-12-13 16:49:00,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551716459] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:49:00,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:49:00,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:49:00,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596385183] [2022-12-13 16:49:00,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:49:00,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:49:00,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:49:00,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:49:00,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:49:00,550 INFO L87 Difference]: Start difference. First operand has 560 states, 438 states have (on average 1.6894977168949772) internal successors, (740), 459 states have internal predecessors, (740), 96 states have call successors, (96), 24 states have call predecessors, (96), 24 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 16:49:05,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:49:05,695 INFO L93 Difference]: Finished difference Result 1361 states and 2301 transitions. [2022-12-13 16:49:05,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:49:05,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-12-13 16:49:05,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:49:05,712 INFO L225 Difference]: With dead ends: 1361 [2022-12-13 16:49:05,712 INFO L226 Difference]: Without dead ends: 813 [2022-12-13 16:49:05,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:49:05,720 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 1408 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 2983 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1885 SdHoareTripleChecker+Invalid, 3385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 2983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-13 16:49:05,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 1885 Invalid, 3385 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [402 Valid, 2983 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-12-13 16:49:05,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2022-12-13 16:49:05,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 552. [2022-12-13 16:49:05,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 432 states have (on average 1.6851851851851851) internal successors, (728), 451 states have internal predecessors, (728), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-13 16:49:05,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 915 transitions. [2022-12-13 16:49:05,855 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 915 transitions. Word has length 102 [2022-12-13 16:49:05,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:49:05,856 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 915 transitions. [2022-12-13 16:49:05,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 16:49:05,856 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 915 transitions. [2022-12-13 16:49:05,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-13 16:49:05,865 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:49:05,865 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:49:05,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:49:05,866 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:49:05,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:49:05,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1233827054, now seen corresponding path program 1 times [2022-12-13 16:49:05,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:49:05,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490294849] [2022-12-13 16:49:05,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:49:05,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:49:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:06,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:49:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:06,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:06,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:49:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:06,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 16:49:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:06,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:06,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:06,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:06,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 16:49:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:06,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 16:49:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:06,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:06,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:06,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 16:49:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:06,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 16:49:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:06,267 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:49:06,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:49:06,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490294849] [2022-12-13 16:49:06,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490294849] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:49:06,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:49:06,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:49:06,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376971763] [2022-12-13 16:49:06,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:49:06,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:49:06,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:49:06,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:49:06,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:49:06,270 INFO L87 Difference]: Start difference. First operand 552 states and 915 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 16:49:10,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:49:10,688 INFO L93 Difference]: Finished difference Result 1347 states and 2263 transitions. [2022-12-13 16:49:10,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:49:10,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2022-12-13 16:49:10,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:49:10,695 INFO L225 Difference]: With dead ends: 1347 [2022-12-13 16:49:10,695 INFO L226 Difference]: Without dead ends: 813 [2022-12-13 16:49:10,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:49:10,700 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 1401 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 2971 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 3372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 2971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:49:10,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1862 Invalid, 3372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 2971 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-13 16:49:10,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2022-12-13 16:49:10,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 552. [2022-12-13 16:49:10,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 432 states have (on average 1.6828703703703705) internal successors, (727), 451 states have internal predecessors, (727), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-13 16:49:10,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 914 transitions. [2022-12-13 16:49:10,815 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 914 transitions. Word has length 105 [2022-12-13 16:49:10,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:49:10,816 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 914 transitions. [2022-12-13 16:49:10,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 16:49:10,816 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 914 transitions. [2022-12-13 16:49:10,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-13 16:49:10,820 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:49:10,820 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:49:10,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:49:10,821 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:49:10,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:49:10,821 INFO L85 PathProgramCache]: Analyzing trace with hash 618878632, now seen corresponding path program 1 times [2022-12-13 16:49:10,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:49:10,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603616409] [2022-12-13 16:49:10,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:49:10,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:49:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:10,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:49:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:10,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:11,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 16:49:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:11,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 16:49:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:11,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:11,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:11,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:11,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 16:49:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:11,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 16:49:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:11,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:11,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:11,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 16:49:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:11,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 16:49:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:11,194 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:49:11,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:49:11,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603616409] [2022-12-13 16:49:11,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603616409] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:49:11,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:49:11,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:49:11,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123848120] [2022-12-13 16:49:11,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:49:11,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:49:11,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:49:11,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:49:11,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:49:11,197 INFO L87 Difference]: Start difference. First operand 552 states and 914 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 16:49:15,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:49:15,376 INFO L93 Difference]: Finished difference Result 1347 states and 2262 transitions. [2022-12-13 16:49:15,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:49:15,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2022-12-13 16:49:15,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:49:15,381 INFO L225 Difference]: With dead ends: 1347 [2022-12-13 16:49:15,381 INFO L226 Difference]: Without dead ends: 813 [2022-12-13 16:49:15,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:49:15,384 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 969 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 3059 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 3312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 3059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-13 16:49:15,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1050 Valid, 1902 Invalid, 3312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 3059 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-13 16:49:15,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2022-12-13 16:49:15,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 552. [2022-12-13 16:49:15,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 432 states have (on average 1.6805555555555556) internal successors, (726), 451 states have internal predecessors, (726), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-13 16:49:15,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 913 transitions. [2022-12-13 16:49:15,493 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 913 transitions. Word has length 106 [2022-12-13 16:49:15,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:49:15,493 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 913 transitions. [2022-12-13 16:49:15,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 16:49:15,493 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 913 transitions. [2022-12-13 16:49:15,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 16:49:15,495 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:49:15,495 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:49:15,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 16:49:15,496 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:49:15,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:49:15,496 INFO L85 PathProgramCache]: Analyzing trace with hash -2133787826, now seen corresponding path program 1 times [2022-12-13 16:49:15,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:49:15,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660566876] [2022-12-13 16:49:15,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:49:15,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:49:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:15,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:49:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:15,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:15,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 16:49:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:15,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 16:49:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:15,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:15,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:15,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:15,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 16:49:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:15,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 16:49:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:15,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:15,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:15,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 16:49:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:15,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 16:49:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:49:15,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:49:15,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660566876] [2022-12-13 16:49:15,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660566876] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:49:15,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:49:15,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:49:15,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263661965] [2022-12-13 16:49:15,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:49:15,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:49:15,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:49:15,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:49:15,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:49:15,840 INFO L87 Difference]: Start difference. First operand 552 states and 913 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 16:49:20,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:49:20,195 INFO L93 Difference]: Finished difference Result 1347 states and 2261 transitions. [2022-12-13 16:49:20,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:49:20,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2022-12-13 16:49:20,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:49:20,200 INFO L225 Difference]: With dead ends: 1347 [2022-12-13 16:49:20,201 INFO L226 Difference]: Without dead ends: 813 [2022-12-13 16:49:20,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:49:20,203 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 1835 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 2784 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 3339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 2784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:49:20,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1916 Valid, 1789 Invalid, 3339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 2784 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-13 16:49:20,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2022-12-13 16:49:20,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 552. [2022-12-13 16:49:20,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 432 states have (on average 1.6782407407407407) internal successors, (725), 451 states have internal predecessors, (725), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-13 16:49:20,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 912 transitions. [2022-12-13 16:49:20,302 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 912 transitions. Word has length 107 [2022-12-13 16:49:20,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:49:20,302 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 912 transitions. [2022-12-13 16:49:20,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 16:49:20,303 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 912 transitions. [2022-12-13 16:49:20,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-13 16:49:20,304 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:49:20,305 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:49:20,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 16:49:20,305 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:49:20,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:49:20,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1624102684, now seen corresponding path program 1 times [2022-12-13 16:49:20,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:49:20,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141049412] [2022-12-13 16:49:20,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:49:20,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:49:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:20,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:49:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:20,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:20,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 16:49:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:20,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 16:49:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:20,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:20,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:20,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:20,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 16:49:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:20,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 16:49:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:20,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:20,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:20,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 16:49:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:20,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 16:49:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:20,631 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:49:20,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:49:20,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141049412] [2022-12-13 16:49:20,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141049412] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:49:20,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:49:20,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:49:20,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309642323] [2022-12-13 16:49:20,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:49:20,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:49:20,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:49:20,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:49:20,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:49:20,633 INFO L87 Difference]: Start difference. First operand 552 states and 912 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 16:49:24,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:49:24,980 INFO L93 Difference]: Finished difference Result 1347 states and 2260 transitions. [2022-12-13 16:49:24,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:49:24,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2022-12-13 16:49:24,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:49:24,983 INFO L225 Difference]: With dead ends: 1347 [2022-12-13 16:49:24,983 INFO L226 Difference]: Without dead ends: 813 [2022-12-13 16:49:24,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:49:24,985 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1836 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 2786 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1917 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 3346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 2786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:49:24,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1917 Valid, 1778 Invalid, 3346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 2786 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-13 16:49:24,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2022-12-13 16:49:25,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 552. [2022-12-13 16:49:25,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 432 states have (on average 1.6759259259259258) internal successors, (724), 451 states have internal predecessors, (724), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-13 16:49:25,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 911 transitions. [2022-12-13 16:49:25,079 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 911 transitions. Word has length 108 [2022-12-13 16:49:25,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:49:25,079 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 911 transitions. [2022-12-13 16:49:25,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 16:49:25,080 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 911 transitions. [2022-12-13 16:49:25,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-13 16:49:25,084 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:49:25,084 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:49:25,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 16:49:25,084 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:49:25,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:49:25,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1234234250, now seen corresponding path program 1 times [2022-12-13 16:49:25,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:49:25,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262307923] [2022-12-13 16:49:25,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:49:25,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:49:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:25,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:49:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:25,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:25,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:49:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:25,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 16:49:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:25,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:25,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:25,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:25,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 16:49:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:25,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 16:49:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:25,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:25,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:25,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 16:49:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:25,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 16:49:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:25,521 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:49:25,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:49:25,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262307923] [2022-12-13 16:49:25,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262307923] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:49:25,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:49:25,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 16:49:25,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406921919] [2022-12-13 16:49:25,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:49:25,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 16:49:25,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:49:25,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 16:49:25,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-12-13 16:49:25,523 INFO L87 Difference]: Start difference. First operand 552 states and 911 transitions. Second operand has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 16:49:31,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:49:31,936 INFO L93 Difference]: Finished difference Result 1324 states and 2210 transitions. [2022-12-13 16:49:31,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 16:49:31,937 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 109 [2022-12-13 16:49:31,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:49:31,940 INFO L225 Difference]: With dead ends: 1324 [2022-12-13 16:49:31,940 INFO L226 Difference]: Without dead ends: 839 [2022-12-13 16:49:31,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-12-13 16:49:31,943 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1116 mSDsluCounter, 3713 mSDsCounter, 0 mSdLazyCounter, 7136 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 4194 SdHoareTripleChecker+Invalid, 7404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 7136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-12-13 16:49:31,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 4194 Invalid, 7404 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [268 Valid, 7136 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-12-13 16:49:31,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2022-12-13 16:49:32,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 565. [2022-12-13 16:49:32,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6719457013574661) internal successors, (739), 463 states have internal predecessors, (739), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-12-13 16:49:32,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 930 transitions. [2022-12-13 16:49:32,044 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 930 transitions. Word has length 109 [2022-12-13 16:49:32,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:49:32,044 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 930 transitions. [2022-12-13 16:49:32,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 16:49:32,045 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 930 transitions. [2022-12-13 16:49:32,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-13 16:49:32,047 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:49:32,047 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:49:32,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 16:49:32,047 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:49:32,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:49:32,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1219984105, now seen corresponding path program 1 times [2022-12-13 16:49:32,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:49:32,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858485358] [2022-12-13 16:49:32,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:49:32,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:49:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:32,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:49:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:32,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:32,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:49:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:32,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 16:49:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:32,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:32,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:32,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:32,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 16:49:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:32,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 16:49:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:32,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:32,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:32,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 16:49:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:32,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 16:49:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:32,336 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:49:32,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:49:32,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858485358] [2022-12-13 16:49:32,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858485358] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:49:32,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:49:32,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:49:32,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112553505] [2022-12-13 16:49:32,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:49:32,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:49:32,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:49:32,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:49:32,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:49:32,337 INFO L87 Difference]: Start difference. First operand 565 states and 930 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 16:49:36,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:49:36,865 INFO L93 Difference]: Finished difference Result 1338 states and 2233 transitions. [2022-12-13 16:49:36,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:49:36,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2022-12-13 16:49:36,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:49:36,870 INFO L225 Difference]: With dead ends: 1338 [2022-12-13 16:49:36,870 INFO L226 Difference]: Without dead ends: 835 [2022-12-13 16:49:36,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:49:36,872 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 1074 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 2959 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 3215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 2959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:49:36,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 1914 Invalid, 3215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 2959 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-12-13 16:49:36,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-12-13 16:49:36,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 565. [2022-12-13 16:49:36,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.660633484162896) internal successors, (734), 463 states have internal predecessors, (734), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-12-13 16:49:36,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 925 transitions. [2022-12-13 16:49:36,979 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 925 transitions. Word has length 109 [2022-12-13 16:49:36,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:49:36,979 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 925 transitions. [2022-12-13 16:49:36,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 16:49:36,979 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 925 transitions. [2022-12-13 16:49:36,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-13 16:49:36,982 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:49:36,982 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:49:36,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 16:49:36,982 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:49:36,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:49:36,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1734696347, now seen corresponding path program 1 times [2022-12-13 16:49:36,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:49:36,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487014284] [2022-12-13 16:49:36,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:49:36,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:49:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:37,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:49:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:37,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:37,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:49:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:37,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 16:49:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:37,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:37,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:37,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:37,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 16:49:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:37,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 16:49:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:37,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:37,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:37,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 16:49:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:37,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 16:49:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:37,279 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:49:37,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:49:37,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487014284] [2022-12-13 16:49:37,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487014284] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:49:37,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:49:37,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:49:37,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589056909] [2022-12-13 16:49:37,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:49:37,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:49:37,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:49:37,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:49:37,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:49:37,281 INFO L87 Difference]: Start difference. First operand 565 states and 925 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 16:49:41,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:49:41,978 INFO L93 Difference]: Finished difference Result 1338 states and 2228 transitions. [2022-12-13 16:49:41,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:49:41,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2022-12-13 16:49:41,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:49:41,982 INFO L225 Difference]: With dead ends: 1338 [2022-12-13 16:49:41,982 INFO L226 Difference]: Without dead ends: 835 [2022-12-13 16:49:41,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:49:41,984 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1063 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 2939 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 3196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 2939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-13 16:49:41,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 1889 Invalid, 3196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 2939 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-13 16:49:41,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-12-13 16:49:42,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 565. [2022-12-13 16:49:42,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6493212669683257) internal successors, (729), 463 states have internal predecessors, (729), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-12-13 16:49:42,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 920 transitions. [2022-12-13 16:49:42,087 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 920 transitions. Word has length 110 [2022-12-13 16:49:42,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:49:42,087 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 920 transitions. [2022-12-13 16:49:42,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 16:49:42,087 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 920 transitions. [2022-12-13 16:49:42,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 16:49:42,089 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:49:42,089 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:49:42,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 16:49:42,089 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:49:42,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:49:42,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1240337234, now seen corresponding path program 1 times [2022-12-13 16:49:42,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:49:42,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830082315] [2022-12-13 16:49:42,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:49:42,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:49:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:42,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:49:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:42,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:42,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:49:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:42,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 16:49:42,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:42,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:42,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:42,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:42,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 16:49:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:42,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 16:49:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:42,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:42,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:42,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 16:49:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:42,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 16:49:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:42,424 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:49:42,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:49:42,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830082315] [2022-12-13 16:49:42,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830082315] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:49:42,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:49:42,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:49:42,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861860976] [2022-12-13 16:49:42,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:49:42,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:49:42,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:49:42,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:49:42,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:49:42,426 INFO L87 Difference]: Start difference. First operand 565 states and 920 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 16:49:46,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:49:46,989 INFO L93 Difference]: Finished difference Result 1338 states and 2223 transitions. [2022-12-13 16:49:46,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:49:46,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2022-12-13 16:49:46,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:49:46,992 INFO L225 Difference]: With dead ends: 1338 [2022-12-13 16:49:46,992 INFO L226 Difference]: Without dead ends: 835 [2022-12-13 16:49:46,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:49:46,994 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1050 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 2918 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 3177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 2918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:49:46,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1131 Valid, 1883 Invalid, 3177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 2918 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-12-13 16:49:46,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-12-13 16:49:47,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 565. [2022-12-13 16:49:47,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6380090497737556) internal successors, (724), 463 states have internal predecessors, (724), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-12-13 16:49:47,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 915 transitions. [2022-12-13 16:49:47,101 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 915 transitions. Word has length 111 [2022-12-13 16:49:47,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:49:47,101 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 915 transitions. [2022-12-13 16:49:47,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 16:49:47,102 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 915 transitions. [2022-12-13 16:49:47,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-13 16:49:47,103 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:49:47,104 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:49:47,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 16:49:47,104 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:49:47,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:49:47,104 INFO L85 PathProgramCache]: Analyzing trace with hash -764644192, now seen corresponding path program 1 times [2022-12-13 16:49:47,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:49:47,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24738911] [2022-12-13 16:49:47,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:49:47,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:49:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:47,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:49:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:47,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:47,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:49:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:47,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 16:49:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:47,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:47,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:47,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:47,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 16:49:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:47,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 16:49:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:47,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:47,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:47,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 16:49:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:47,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 16:49:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:47,474 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:49:47,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:49:47,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24738911] [2022-12-13 16:49:47,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24738911] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:49:47,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:49:47,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 16:49:47,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250441905] [2022-12-13 16:49:47,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:49:47,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 16:49:47,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:49:47,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 16:49:47,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:49:47,476 INFO L87 Difference]: Start difference. First operand 565 states and 915 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 16:49:53,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:49:53,044 INFO L93 Difference]: Finished difference Result 1330 states and 2200 transitions. [2022-12-13 16:49:53,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 16:49:53,045 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 112 [2022-12-13 16:49:53,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:49:53,047 INFO L225 Difference]: With dead ends: 1330 [2022-12-13 16:49:53,048 INFO L226 Difference]: Without dead ends: 842 [2022-12-13 16:49:53,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-12-13 16:49:53,049 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 1025 mSDsluCounter, 2833 mSDsCounter, 0 mSdLazyCounter, 5377 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 3319 SdHoareTripleChecker+Invalid, 5637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 5377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-13 16:49:53,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 3319 Invalid, 5637 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [260 Valid, 5377 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-12-13 16:49:53,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-12-13 16:49:53,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 565. [2022-12-13 16:49:53,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6357466063348416) internal successors, (723), 463 states have internal predecessors, (723), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-12-13 16:49:53,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 914 transitions. [2022-12-13 16:49:53,166 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 914 transitions. Word has length 112 [2022-12-13 16:49:53,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:49:53,166 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 914 transitions. [2022-12-13 16:49:53,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 16:49:53,166 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 914 transitions. [2022-12-13 16:49:53,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-13 16:49:53,168 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:49:53,168 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:49:53,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 16:49:53,168 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:49:53,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:49:53,168 INFO L85 PathProgramCache]: Analyzing trace with hash -728341632, now seen corresponding path program 1 times [2022-12-13 16:49:53,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:49:53,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537308055] [2022-12-13 16:49:53,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:49:53,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:49:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:53,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:49:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:53,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:53,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:49:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:53,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 16:49:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:53,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:53,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:53,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:53,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 16:49:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:53,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 16:49:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:53,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:53,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:53,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 16:49:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:53,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 16:49:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:53,447 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:49:53,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:49:53,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537308055] [2022-12-13 16:49:53,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537308055] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:49:53,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:49:53,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:49:53,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275231104] [2022-12-13 16:49:53,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:49:53,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:49:53,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:49:53,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:49:53,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:49:53,453 INFO L87 Difference]: Start difference. First operand 565 states and 914 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 16:49:57,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:49:57,287 INFO L93 Difference]: Finished difference Result 1338 states and 2215 transitions. [2022-12-13 16:49:57,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:49:57,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-12-13 16:49:57,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:49:57,290 INFO L225 Difference]: With dead ends: 1338 [2022-12-13 16:49:57,290 INFO L226 Difference]: Without dead ends: 835 [2022-12-13 16:49:57,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:49:57,292 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 1920 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 2637 mSolverCounterSat, 558 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2001 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 3195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 558 IncrementalHoareTripleChecker+Valid, 2637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 16:49:57,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2001 Valid, 1790 Invalid, 3195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [558 Valid, 2637 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 16:49:57,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-12-13 16:49:57,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 565. [2022-12-13 16:49:57,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6244343891402715) internal successors, (718), 463 states have internal predecessors, (718), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-12-13 16:49:57,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 909 transitions. [2022-12-13 16:49:57,411 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 909 transitions. Word has length 112 [2022-12-13 16:49:57,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:49:57,411 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 909 transitions. [2022-12-13 16:49:57,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 16:49:57,412 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 909 transitions. [2022-12-13 16:49:57,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-13 16:49:57,413 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:49:57,413 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:49:57,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 16:49:57,413 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:49:57,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:49:57,413 INFO L85 PathProgramCache]: Analyzing trace with hash 291656529, now seen corresponding path program 1 times [2022-12-13 16:49:57,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:49:57,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738074298] [2022-12-13 16:49:57,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:49:57,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:49:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:57,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:49:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:57,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:57,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:49:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:57,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 16:49:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:57,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:57,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:57,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:57,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 16:49:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:57,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 16:49:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:57,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:57,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:49:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:57,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 16:49:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:57,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 16:49:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:57,724 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:49:57,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:49:57,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738074298] [2022-12-13 16:49:57,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738074298] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:49:57,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:49:57,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 16:49:57,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609564491] [2022-12-13 16:49:57,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:49:57,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 16:49:57,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:49:57,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 16:49:57,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:49:57,726 INFO L87 Difference]: Start difference. First operand 565 states and 909 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 16:50:03,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:50:03,599 INFO L93 Difference]: Finished difference Result 1351 states and 2225 transitions. [2022-12-13 16:50:03,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 16:50:03,600 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 113 [2022-12-13 16:50:03,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:50:03,603 INFO L225 Difference]: With dead ends: 1351 [2022-12-13 16:50:03,603 INFO L226 Difference]: Without dead ends: 860 [2022-12-13 16:50:03,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-12-13 16:50:03,604 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1043 mSDsluCounter, 2818 mSDsCounter, 0 mSdLazyCounter, 5249 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 5516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 5249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-12-13 16:50:03,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 3301 Invalid, 5516 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [267 Valid, 5249 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-12-13 16:50:03,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-12-13 16:50:03,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 568. [2022-12-13 16:50:03,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 445 states have (on average 1.6179775280898876) internal successors, (720), 466 states have internal predecessors, (720), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-12-13 16:50:03,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 911 transitions. [2022-12-13 16:50:03,721 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 911 transitions. Word has length 113 [2022-12-13 16:50:03,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:50:03,721 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 911 transitions. [2022-12-13 16:50:03,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 16:50:03,721 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 911 transitions. [2022-12-13 16:50:03,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-13 16:50:03,722 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:50:03,722 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:50:03,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 16:50:03,722 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:50:03,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:50:03,723 INFO L85 PathProgramCache]: Analyzing trace with hash 507376243, now seen corresponding path program 1 times [2022-12-13 16:50:03,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:50:03,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449013815] [2022-12-13 16:50:03,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:03,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:50:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:03,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:50:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:03,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:03,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:50:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:03,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 16:50:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:03,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:03,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:03,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:03,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 16:50:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:03,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 16:50:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:03,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:03,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:03,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 16:50:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:03,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 16:50:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:03,962 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:50:03,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:50:03,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449013815] [2022-12-13 16:50:03,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449013815] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:50:03,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:50:03,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:50:03,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657611176] [2022-12-13 16:50:03,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:50:03,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:50:03,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:50:03,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:50:03,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:50:03,963 INFO L87 Difference]: Start difference. First operand 568 states and 911 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 16:50:07,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:50:07,981 INFO L93 Difference]: Finished difference Result 1347 states and 2216 transitions. [2022-12-13 16:50:07,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:50:07,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-12-13 16:50:07,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:50:07,985 INFO L225 Difference]: With dead ends: 1347 [2022-12-13 16:50:07,985 INFO L226 Difference]: Without dead ends: 841 [2022-12-13 16:50:07,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:50:07,986 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1482 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 2682 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 3097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 2682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-13 16:50:07,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1563 Valid, 1813 Invalid, 3097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 2682 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-13 16:50:07,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2022-12-13 16:50:08,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 568. [2022-12-13 16:50:08,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 445 states have (on average 1.6067415730337078) internal successors, (715), 466 states have internal predecessors, (715), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-12-13 16:50:08,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 906 transitions. [2022-12-13 16:50:08,103 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 906 transitions. Word has length 113 [2022-12-13 16:50:08,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:50:08,103 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 906 transitions. [2022-12-13 16:50:08,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 16:50:08,103 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 906 transitions. [2022-12-13 16:50:08,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 16:50:08,104 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:50:08,104 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:50:08,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 16:50:08,105 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:50:08,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:50:08,105 INFO L85 PathProgramCache]: Analyzing trace with hash -158102651, now seen corresponding path program 1 times [2022-12-13 16:50:08,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:50:08,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769725450] [2022-12-13 16:50:08,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:08,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:50:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:08,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:50:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:08,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:08,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:50:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:08,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 16:50:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:08,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:08,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:08,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:08,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 16:50:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:08,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 16:50:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:08,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:08,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:08,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 16:50:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:08,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 16:50:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:08,476 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:50:08,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:50:08,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769725450] [2022-12-13 16:50:08,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769725450] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:50:08,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:50:08,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 16:50:08,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917985365] [2022-12-13 16:50:08,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:50:08,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 16:50:08,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:50:08,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 16:50:08,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:50:08,478 INFO L87 Difference]: Start difference. First operand 568 states and 906 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 16:50:14,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:50:14,413 INFO L93 Difference]: Finished difference Result 1357 states and 2222 transitions. [2022-12-13 16:50:14,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 16:50:14,414 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 114 [2022-12-13 16:50:14,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:50:14,417 INFO L225 Difference]: With dead ends: 1357 [2022-12-13 16:50:14,417 INFO L226 Difference]: Without dead ends: 866 [2022-12-13 16:50:14,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-12-13 16:50:14,418 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 1462 mSDsluCounter, 2783 mSDsCounter, 0 mSdLazyCounter, 5141 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 3271 SdHoareTripleChecker+Invalid, 5562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 5141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-12-13 16:50:14,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 3271 Invalid, 5562 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [421 Valid, 5141 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-12-13 16:50:14,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-12-13 16:50:14,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 572. [2022-12-13 16:50:14,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 449 states have (on average 1.599109131403118) internal successors, (718), 470 states have internal predecessors, (718), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-12-13 16:50:14,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 909 transitions. [2022-12-13 16:50:14,544 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 909 transitions. Word has length 114 [2022-12-13 16:50:14,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:50:14,545 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 909 transitions. [2022-12-13 16:50:14,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 16:50:14,545 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 909 transitions. [2022-12-13 16:50:14,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 16:50:14,546 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:50:14,546 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:50:14,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 16:50:14,546 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:50:14,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:50:14,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1591319195, now seen corresponding path program 1 times [2022-12-13 16:50:14,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:50:14,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124942538] [2022-12-13 16:50:14,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:14,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:50:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:14,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:50:14,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:14,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:14,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:50:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:14,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 16:50:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:14,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:14,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:14,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:14,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 16:50:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:14,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 16:50:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:14,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:14,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:14,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 16:50:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:14,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 16:50:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:14,838 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:50:14,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:50:14,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124942538] [2022-12-13 16:50:14,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124942538] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:50:14,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:50:14,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:50:14,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151614711] [2022-12-13 16:50:14,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:50:14,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:50:14,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:50:14,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:50:14,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:50:14,840 INFO L87 Difference]: Start difference. First operand 572 states and 909 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 16:50:19,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:50:19,436 INFO L93 Difference]: Finished difference Result 1395 states and 2261 transitions. [2022-12-13 16:50:19,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:50:19,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-12-13 16:50:19,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:50:19,439 INFO L225 Difference]: With dead ends: 1395 [2022-12-13 16:50:19,439 INFO L226 Difference]: Without dead ends: 821 [2022-12-13 16:50:19,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:50:19,440 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 935 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 2899 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 3155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 2899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:50:19,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 1877 Invalid, 3155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 2899 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-13 16:50:19,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2022-12-13 16:50:19,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 553. [2022-12-13 16:50:19,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 433 states have (on average 1.6073903002309469) internal successors, (696), 452 states have internal predecessors, (696), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-13 16:50:19,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 883 transitions. [2022-12-13 16:50:19,570 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 883 transitions. Word has length 114 [2022-12-13 16:50:19,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:50:19,571 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 883 transitions. [2022-12-13 16:50:19,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 16:50:19,571 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 883 transitions. [2022-12-13 16:50:19,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-13 16:50:19,572 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:50:19,572 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:50:19,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 16:50:19,572 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:50:19,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:50:19,572 INFO L85 PathProgramCache]: Analyzing trace with hash -51078506, now seen corresponding path program 1 times [2022-12-13 16:50:19,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:50:19,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133602287] [2022-12-13 16:50:19,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:19,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:50:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:19,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:50:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:19,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:19,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:50:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:19,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 16:50:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:19,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:19,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:19,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:19,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 16:50:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:19,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 16:50:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:19,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:19,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:19,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 16:50:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:19,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 16:50:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:19,894 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:50:19,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:50:19,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133602287] [2022-12-13 16:50:19,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133602287] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:50:19,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:50:19,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 16:50:19,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322667620] [2022-12-13 16:50:19,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:50:19,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 16:50:19,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:50:19,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 16:50:19,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:50:19,897 INFO L87 Difference]: Start difference. First operand 553 states and 883 transitions. Second operand has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 16:50:25,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:50:25,768 INFO L93 Difference]: Finished difference Result 1330 states and 2176 transitions. [2022-12-13 16:50:25,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 16:50:25,769 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 115 [2022-12-13 16:50:25,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:50:25,771 INFO L225 Difference]: With dead ends: 1330 [2022-12-13 16:50:25,771 INFO L226 Difference]: Without dead ends: 842 [2022-12-13 16:50:25,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-12-13 16:50:25,773 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 1852 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 4882 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1933 SdHoareTripleChecker+Valid, 3251 SdHoareTripleChecker+Invalid, 5445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 4882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-12-13 16:50:25,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1933 Valid, 3251 Invalid, 5445 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [563 Valid, 4882 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-12-13 16:50:25,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-12-13 16:50:25,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 558. [2022-12-13 16:50:25,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 438 states have (on average 1.6004566210045663) internal successors, (701), 457 states have internal predecessors, (701), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-13 16:50:25,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 888 transitions. [2022-12-13 16:50:25,935 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 888 transitions. Word has length 115 [2022-12-13 16:50:25,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:50:25,935 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 888 transitions. [2022-12-13 16:50:25,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 16:50:25,935 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 888 transitions. [2022-12-13 16:50:25,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-13 16:50:25,936 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:50:25,936 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:50:25,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 16:50:25,937 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:50:25,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:50:25,937 INFO L85 PathProgramCache]: Analyzing trace with hash -103270278, now seen corresponding path program 1 times [2022-12-13 16:50:25,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:50:25,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599036629] [2022-12-13 16:50:25,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:25,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:50:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:26,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:50:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:26,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:26,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:50:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:26,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:50:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:26,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:26,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:26,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:26,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 16:50:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:26,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 16:50:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:26,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:26,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:26,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 16:50:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:26,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 16:50:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:26,431 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:50:26,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:50:26,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599036629] [2022-12-13 16:50:26,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599036629] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:50:26,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:50:26,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-13 16:50:26,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081673890] [2022-12-13 16:50:26,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:50:26,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 16:50:26,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:50:26,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 16:50:26,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:50:26,433 INFO L87 Difference]: Start difference. First operand 558 states and 888 transitions. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-13 16:50:35,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:50:35,953 INFO L93 Difference]: Finished difference Result 1583 states and 2703 transitions. [2022-12-13 16:50:35,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 16:50:35,953 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 116 [2022-12-13 16:50:35,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:50:35,958 INFO L225 Difference]: With dead ends: 1583 [2022-12-13 16:50:35,958 INFO L226 Difference]: Without dead ends: 1103 [2022-12-13 16:50:35,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2022-12-13 16:50:35,960 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 3925 mSDsluCounter, 3533 mSDsCounter, 0 mSdLazyCounter, 9982 mSolverCounterSat, 1964 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3925 SdHoareTripleChecker+Valid, 4123 SdHoareTripleChecker+Invalid, 11946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1964 IncrementalHoareTripleChecker+Valid, 9982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-12-13 16:50:35,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3925 Valid, 4123 Invalid, 11946 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1964 Valid, 9982 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-12-13 16:50:35,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2022-12-13 16:50:36,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 567. [2022-12-13 16:50:36,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 445 states have (on average 1.5910112359550561) internal successors, (708), 463 states have internal predecessors, (708), 96 states have call successors, (96), 24 states have call predecessors, (96), 25 states have return successors, (110), 92 states have call predecessors, (110), 91 states have call successors, (110) [2022-12-13 16:50:36,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 914 transitions. [2022-12-13 16:50:36,104 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 914 transitions. Word has length 116 [2022-12-13 16:50:36,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:50:36,104 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 914 transitions. [2022-12-13 16:50:36,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-13 16:50:36,104 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 914 transitions. [2022-12-13 16:50:36,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-12-13 16:50:36,105 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:50:36,105 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:50:36,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 16:50:36,106 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:50:36,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:50:36,106 INFO L85 PathProgramCache]: Analyzing trace with hash 243649490, now seen corresponding path program 1 times [2022-12-13 16:50:36,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:50:36,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546753904] [2022-12-13 16:50:36,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:36,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:50:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:36,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:50:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:36,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:36,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:50:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:36,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:50:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:36,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:36,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:36,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:36,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 16:50:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:36,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 16:50:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:36,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:36,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:36,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 16:50:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:36,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 16:50:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:36,619 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 16:50:36,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:50:36,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546753904] [2022-12-13 16:50:36,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546753904] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:50:36,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:50:36,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-13 16:50:36,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455773577] [2022-12-13 16:50:36,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:50:36,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 16:50:36,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:50:36,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 16:50:36,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:50:36,621 INFO L87 Difference]: Start difference. First operand 567 states and 914 transitions. Second operand has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 9 states have internal predecessors, (82), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-13 16:50:55,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:50:55,971 INFO L93 Difference]: Finished difference Result 2553 states and 4531 transitions. [2022-12-13 16:50:55,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-13 16:50:55,972 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 9 states have internal predecessors, (82), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 118 [2022-12-13 16:50:55,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:50:55,982 INFO L225 Difference]: With dead ends: 2553 [2022-12-13 16:50:55,982 INFO L226 Difference]: Without dead ends: 2064 [2022-12-13 16:50:55,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=337, Invalid=1555, Unknown=0, NotChecked=0, Total=1892 [2022-12-13 16:50:55,985 INFO L413 NwaCegarLoop]: 1229 mSDtfsCounter, 6537 mSDsluCounter, 7903 mSDsCounter, 0 mSdLazyCounter, 20253 mSolverCounterSat, 3293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6537 SdHoareTripleChecker+Valid, 9132 SdHoareTripleChecker+Invalid, 23546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3293 IncrementalHoareTripleChecker+Valid, 20253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:50:55,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6537 Valid, 9132 Invalid, 23546 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3293 Valid, 20253 Invalid, 0 Unknown, 0 Unchecked, 15.0s Time] [2022-12-13 16:50:55,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2064 states. [2022-12-13 16:50:56,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2064 to 1348. [2022-12-13 16:50:56,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 986 states have (on average 1.6004056795131847) internal successors, (1578), 1043 states have internal predecessors, (1578), 305 states have call successors, (305), 44 states have call predecessors, (305), 56 states have return successors, (410), 308 states have call predecessors, (410), 300 states have call successors, (410) [2022-12-13 16:50:56,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 2293 transitions. [2022-12-13 16:50:56,472 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 2293 transitions. Word has length 118 [2022-12-13 16:50:56,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:50:56,472 INFO L495 AbstractCegarLoop]: Abstraction has 1348 states and 2293 transitions. [2022-12-13 16:50:56,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 9 states have internal predecessors, (82), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-13 16:50:56,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 2293 transitions. [2022-12-13 16:50:56,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-13 16:50:56,475 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:50:56,475 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:50:56,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 16:50:56,475 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:50:56,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:50:56,475 INFO L85 PathProgramCache]: Analyzing trace with hash -790027358, now seen corresponding path program 1 times [2022-12-13 16:50:56,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:50:56,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284041460] [2022-12-13 16:50:56,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:56,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:50:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:56,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:50:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:56,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:56,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:50:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:56,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:50:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:56,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:56,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:56,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:56,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 16:50:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:56,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 16:50:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:56,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:56,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:56,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 16:50:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:56,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 16:50:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:56,908 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 16:50:56,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:50:56,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284041460] [2022-12-13 16:50:56,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284041460] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:50:56,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140103205] [2022-12-13 16:50:56,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:56,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:50:56,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:50:56,910 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:50:56,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:50:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:57,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:50:57,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:50:57,200 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:50:57,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:50:57,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140103205] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:50:57,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:50:57,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2022-12-13 16:50:57,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554657769] [2022-12-13 16:50:57,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:50:57,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:50:57,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:50:57,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:50:57,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:50:57,202 INFO L87 Difference]: Start difference. First operand 1348 states and 2293 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 16:50:58,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:50:58,231 INFO L93 Difference]: Finished difference Result 2623 states and 4546 transitions. [2022-12-13 16:50:58,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:50:58,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2022-12-13 16:50:58,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:50:58,237 INFO L225 Difference]: With dead ends: 2623 [2022-12-13 16:50:58,237 INFO L226 Difference]: Without dead ends: 1361 [2022-12-13 16:50:58,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-12-13 16:50:58,241 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 815 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 16:50:58,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 2193 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 16:50:58,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2022-12-13 16:50:58,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 577. [2022-12-13 16:50:58,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 453 states have (on average 1.5916114790286975) internal successors, (721), 472 states have internal predecessors, (721), 96 states have call successors, (96), 25 states have call predecessors, (96), 27 states have return successors, (111), 92 states have call predecessors, (111), 91 states have call successors, (111) [2022-12-13 16:50:58,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 928 transitions. [2022-12-13 16:50:58,443 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 928 transitions. Word has length 117 [2022-12-13 16:50:58,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:50:58,443 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 928 transitions. [2022-12-13 16:50:58,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 16:50:58,443 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 928 transitions. [2022-12-13 16:50:58,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-12-13 16:50:58,445 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:50:58,445 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:50:58,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:50:58,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:50:58,646 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:50:58,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:50:58,647 INFO L85 PathProgramCache]: Analyzing trace with hash 456328213, now seen corresponding path program 1 times [2022-12-13 16:50:58,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:50:58,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677270457] [2022-12-13 16:50:58,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:58,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:50:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:58,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:50:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:58,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:58,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:50:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:58,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:50:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:59,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:59,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:59,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:59,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 16:50:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:59,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 16:50:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:59,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:59,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:50:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:59,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 16:50:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:59,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 16:50:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:59,138 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 16:50:59,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:50:59,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677270457] [2022-12-13 16:50:59,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677270457] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:50:59,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981367451] [2022-12-13 16:50:59,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:59,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:50:59,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:50:59,140 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:50:59,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 16:50:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:59,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:50:59,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:50:59,430 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:50:59,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:50:59,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981367451] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:50:59,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:50:59,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2022-12-13 16:50:59,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150040922] [2022-12-13 16:50:59,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:50:59,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:50:59,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:50:59,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:50:59,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-12-13 16:50:59,432 INFO L87 Difference]: Start difference. First operand 577 states and 928 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 16:50:59,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:50:59,993 INFO L93 Difference]: Finished difference Result 1086 states and 1792 transitions. [2022-12-13 16:50:59,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:50:59,993 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2022-12-13 16:50:59,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:50:59,996 INFO L225 Difference]: With dead ends: 1086 [2022-12-13 16:50:59,996 INFO L226 Difference]: Without dead ends: 587 [2022-12-13 16:50:59,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:50:59,997 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 810 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 16:50:59,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 2193 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 16:50:59,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-12-13 16:51:00,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2022-12-13 16:51:00,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 461 states have (on average 1.5921908893709327) internal successors, (734), 481 states have internal predecessors, (734), 96 states have call successors, (96), 26 states have call predecessors, (96), 29 states have return successors, (112), 92 states have call predecessors, (112), 91 states have call successors, (112) [2022-12-13 16:51:00,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 942 transitions. [2022-12-13 16:51:00,172 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 942 transitions. Word has length 122 [2022-12-13 16:51:00,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:51:00,172 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 942 transitions. [2022-12-13 16:51:00,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 16:51:00,173 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 942 transitions. [2022-12-13 16:51:00,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-12-13 16:51:00,174 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:51:00,174 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:51:00,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 16:51:00,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:51:00,375 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:51:00,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:51:00,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1197558838, now seen corresponding path program 1 times [2022-12-13 16:51:00,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:51:00,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125892301] [2022-12-13 16:51:00,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:51:00,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:51:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:00,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:51:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:00,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:00,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:51:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:00,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:51:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:00,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:00,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:00,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:00,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 16:51:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:00,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 16:51:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:00,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:00,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:00,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 16:51:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:00,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 16:51:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:00,864 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 16:51:00,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:51:00,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125892301] [2022-12-13 16:51:00,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125892301] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:51:00,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:51:00,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-13 16:51:00,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515826653] [2022-12-13 16:51:00,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:51:00,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 16:51:00,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:51:00,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 16:51:00,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:51:00,866 INFO L87 Difference]: Start difference. First operand 587 states and 942 transitions. Second operand has 15 states, 15 states have (on average 5.6) internal successors, (84), 9 states have internal predecessors, (84), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-13 16:51:17,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:51:17,803 INFO L93 Difference]: Finished difference Result 2614 states and 4591 transitions. [2022-12-13 16:51:17,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-13 16:51:17,803 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 9 states have internal predecessors, (84), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 122 [2022-12-13 16:51:17,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:51:17,812 INFO L225 Difference]: With dead ends: 2614 [2022-12-13 16:51:17,813 INFO L226 Difference]: Without dead ends: 2105 [2022-12-13 16:51:17,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=337, Invalid=1555, Unknown=0, NotChecked=0, Total=1892 [2022-12-13 16:51:17,816 INFO L413 NwaCegarLoop]: 1229 mSDtfsCounter, 7457 mSDsluCounter, 7718 mSDsCounter, 0 mSdLazyCounter, 19450 mSolverCounterSat, 3859 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7457 SdHoareTripleChecker+Valid, 8947 SdHoareTripleChecker+Invalid, 23309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3859 IncrementalHoareTripleChecker+Valid, 19450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:51:17,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7457 Valid, 8947 Invalid, 23309 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3859 Valid, 19450 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2022-12-13 16:51:17,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2022-12-13 16:51:18,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 1388. [2022-12-13 16:51:18,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1018 states have (on average 1.6011787819253438) internal successors, (1630), 1079 states have internal predecessors, (1630), 305 states have call successors, (305), 48 states have call predecessors, (305), 64 states have return successors, (405), 308 states have call predecessors, (405), 300 states have call successors, (405) [2022-12-13 16:51:18,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 2340 transitions. [2022-12-13 16:51:18,419 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 2340 transitions. Word has length 122 [2022-12-13 16:51:18,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:51:18,419 INFO L495 AbstractCegarLoop]: Abstraction has 1388 states and 2340 transitions. [2022-12-13 16:51:18,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 9 states have internal predecessors, (84), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-13 16:51:18,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 2340 transitions. [2022-12-13 16:51:18,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-12-13 16:51:18,422 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:51:18,422 INFO L195 NwaCegarLoop]: 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] [2022-12-13 16:51:18,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 16:51:18,422 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:51:18,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:51:18,422 INFO L85 PathProgramCache]: Analyzing trace with hash 706267002, now seen corresponding path program 1 times [2022-12-13 16:51:18,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:51:18,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538041124] [2022-12-13 16:51:18,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:51:18,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:51:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:18,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:51:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:18,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:18,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:51:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:18,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:51:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:18,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:18,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:18,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:18,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:51:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:18,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 16:51:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:18,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:18,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:18,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 16:51:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:18,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 16:51:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:18,938 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 16:51:18,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:51:18,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538041124] [2022-12-13 16:51:18,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538041124] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:51:18,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:51:18,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-13 16:51:18,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903637636] [2022-12-13 16:51:18,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:51:18,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 16:51:18,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:51:18,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 16:51:18,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-12-13 16:51:18,940 INFO L87 Difference]: Start difference. First operand 1388 states and 2340 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-12-13 16:51:39,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:51:39,688 INFO L93 Difference]: Finished difference Result 5194 states and 9507 transitions. [2022-12-13 16:51:39,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-13 16:51:39,688 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) Word has length 124 [2022-12-13 16:51:39,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:51:39,706 INFO L225 Difference]: With dead ends: 5194 [2022-12-13 16:51:39,706 INFO L226 Difference]: Without dead ends: 3892 [2022-12-13 16:51:39,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=418, Invalid=1838, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 16:51:39,723 INFO L413 NwaCegarLoop]: 1346 mSDtfsCounter, 5821 mSDsluCounter, 8747 mSDsCounter, 0 mSdLazyCounter, 21575 mSolverCounterSat, 3058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5827 SdHoareTripleChecker+Valid, 10093 SdHoareTripleChecker+Invalid, 24633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3058 IncrementalHoareTripleChecker+Valid, 21575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2022-12-13 16:51:39,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5827 Valid, 10093 Invalid, 24633 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3058 Valid, 21575 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2022-12-13 16:51:39,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3892 states. [2022-12-13 16:51:40,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3892 to 2145. [2022-12-13 16:51:40,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2145 states, 1574 states have (on average 1.608005082592122) internal successors, (2531), 1656 states have internal predecessors, (2531), 473 states have call successors, (473), 70 states have call predecessors, (473), 97 states have return successors, (694), 482 states have call predecessors, (694), 468 states have call successors, (694) [2022-12-13 16:51:40,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 3698 transitions. [2022-12-13 16:51:40,841 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 3698 transitions. Word has length 124 [2022-12-13 16:51:40,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:51:40,841 INFO L495 AbstractCegarLoop]: Abstraction has 2145 states and 3698 transitions. [2022-12-13 16:51:40,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-12-13 16:51:40,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 3698 transitions. [2022-12-13 16:51:40,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-12-13 16:51:40,845 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:51:40,845 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:51:40,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 16:51:40,845 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:51:40,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:51:40,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1283387646, now seen corresponding path program 1 times [2022-12-13 16:51:40,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:51:40,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294368504] [2022-12-13 16:51:40,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:51:40,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:51:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:40,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:51:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:41,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:41,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:51:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:41,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:51:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:41,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:41,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:41,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:41,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:51:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:41,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 16:51:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:41,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:41,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:41,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 16:51:41,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:41,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 16:51:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:41,200 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 16:51:41,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:51:41,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294368504] [2022-12-13 16:51:41,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294368504] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:51:41,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:51:41,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 16:51:41,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114690334] [2022-12-13 16:51:41,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:51:41,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 16:51:41,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:51:41,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 16:51:41,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:51:41,202 INFO L87 Difference]: Start difference. First operand 2145 states and 3698 transitions. Second operand has 10 states, 9 states have (on average 9.555555555555555) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 16:51:48,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:51:48,147 INFO L93 Difference]: Finished difference Result 4254 states and 7463 transitions. [2022-12-13 16:51:48,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 16:51:48,147 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.555555555555555) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 123 [2022-12-13 16:51:48,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:51:48,159 INFO L225 Difference]: With dead ends: 4254 [2022-12-13 16:51:48,159 INFO L226 Difference]: Without dead ends: 2910 [2022-12-13 16:51:48,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-12-13 16:51:48,164 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 969 mSDsluCounter, 3024 mSDsCounter, 0 mSdLazyCounter, 5144 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 3543 SdHoareTripleChecker+Invalid, 5392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 5144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-12-13 16:51:48,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1050 Valid, 3543 Invalid, 5392 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [248 Valid, 5144 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-12-13 16:51:48,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2022-12-13 16:51:49,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2151. [2022-12-13 16:51:49,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 1580 states have (on average 1.6056962025316455) internal successors, (2537), 1662 states have internal predecessors, (2537), 473 states have call successors, (473), 70 states have call predecessors, (473), 97 states have return successors, (694), 482 states have call predecessors, (694), 468 states have call successors, (694) [2022-12-13 16:51:49,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 3704 transitions. [2022-12-13 16:51:49,351 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 3704 transitions. Word has length 123 [2022-12-13 16:51:49,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:51:49,351 INFO L495 AbstractCegarLoop]: Abstraction has 2151 states and 3704 transitions. [2022-12-13 16:51:49,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.555555555555555) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 16:51:49,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 3704 transitions. [2022-12-13 16:51:49,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-12-13 16:51:49,354 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:51:49,354 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:51:49,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 16:51:49,354 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:51:49,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:51:49,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1733503299, now seen corresponding path program 1 times [2022-12-13 16:51:49,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:51:49,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746428601] [2022-12-13 16:51:49,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:51:49,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:51:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:49,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:51:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:49,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:49,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:51:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:49,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 16:51:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:49,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:49,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:49,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:49,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 16:51:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:49,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 16:51:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:49,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:49,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:49,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 16:51:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:49,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 16:51:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:49,709 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 16:51:49,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:51:49,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746428601] [2022-12-13 16:51:49,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746428601] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:51:49,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:51:49,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 16:51:49,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086788230] [2022-12-13 16:51:49,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:51:49,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 16:51:49,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:51:49,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 16:51:49,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:51:49,711 INFO L87 Difference]: Start difference. First operand 2151 states and 3704 transitions. Second operand has 10 states, 9 states have (on average 10.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 16:51:55,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:51:55,940 INFO L93 Difference]: Finished difference Result 3244 states and 5639 transitions. [2022-12-13 16:51:55,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 16:51:55,940 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 127 [2022-12-13 16:51:55,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:51:55,946 INFO L225 Difference]: With dead ends: 3244 [2022-12-13 16:51:55,946 INFO L226 Difference]: Without dead ends: 1107 [2022-12-13 16:51:55,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-13 16:51:55,951 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 1857 mSDsluCounter, 2672 mSDsCounter, 0 mSdLazyCounter, 4810 mSolverCounterSat, 552 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1935 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 5362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 552 IncrementalHoareTripleChecker+Valid, 4810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-12-13 16:51:55,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1935 Valid, 3149 Invalid, 5362 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [552 Valid, 4810 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-12-13 16:51:55,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-12-13 16:51:56,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 538. [2022-12-13 16:51:56,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 417 states have (on average 1.6235011990407673) internal successors, (677), 438 states have internal predecessors, (677), 93 states have call successors, (93), 26 states have call predecessors, (93), 27 states have return successors, (99), 86 states have call predecessors, (99), 88 states have call successors, (99) [2022-12-13 16:51:56,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 869 transitions. [2022-12-13 16:51:56,166 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 869 transitions. Word has length 127 [2022-12-13 16:51:56,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:51:56,166 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 869 transitions. [2022-12-13 16:51:56,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 16:51:56,166 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 869 transitions. [2022-12-13 16:51:56,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-12-13 16:51:56,167 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:51:56,167 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:51:56,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 16:51:56,168 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:51:56,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:51:56,168 INFO L85 PathProgramCache]: Analyzing trace with hash 215493586, now seen corresponding path program 1 times [2022-12-13 16:51:56,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:51:56,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665009760] [2022-12-13 16:51:56,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:51:56,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:51:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:56,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:51:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:56,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:56,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:51:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:56,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:51:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:56,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:56,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:56,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:56,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 16:51:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:56,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:56,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 16:51:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:56,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:56,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:51:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:56,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 16:51:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:56,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 16:51:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:56,478 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 16:51:56,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:51:56,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665009760] [2022-12-13 16:51:56,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665009760] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:51:56,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:51:56,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 16:51:56,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928266272] [2022-12-13 16:51:56,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:51:56,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 16:51:56,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:51:56,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 16:51:56,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:51:56,481 INFO L87 Difference]: Start difference. First operand 538 states and 869 transitions. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 16:52:03,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:52:03,568 INFO L93 Difference]: Finished difference Result 1498 states and 2543 transitions. [2022-12-13 16:52:03,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 16:52:03,568 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 128 [2022-12-13 16:52:03,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:52:03,572 INFO L225 Difference]: With dead ends: 1498 [2022-12-13 16:52:03,572 INFO L226 Difference]: Without dead ends: 1005 [2022-12-13 16:52:03,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2022-12-13 16:52:03,573 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 3006 mSDsluCounter, 2207 mSDsCounter, 0 mSdLazyCounter, 4465 mSolverCounterSat, 1537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3017 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 6002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1537 IncrementalHoareTripleChecker+Valid, 4465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-12-13 16:52:03,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3017 Valid, 2686 Invalid, 6002 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1537 Valid, 4465 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-12-13 16:52:03,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2022-12-13 16:52:03,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 543. [2022-12-13 16:52:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 421 states have (on average 1.6175771971496438) internal successors, (681), 442 states have internal predecessors, (681), 93 states have call successors, (93), 26 states have call predecessors, (93), 28 states have return successors, (100), 87 states have call predecessors, (100), 88 states have call successors, (100) [2022-12-13 16:52:03,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 874 transitions. [2022-12-13 16:52:03,784 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 874 transitions. Word has length 128 [2022-12-13 16:52:03,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:52:03,784 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 874 transitions. [2022-12-13 16:52:03,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 16:52:03,784 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 874 transitions. [2022-12-13 16:52:03,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-12-13 16:52:03,786 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:52:03,786 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-13 16:52:03,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 16:52:03,786 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:52:03,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:52:03,786 INFO L85 PathProgramCache]: Analyzing trace with hash -665721627, now seen corresponding path program 1 times [2022-12-13 16:52:03,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:52:03,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833509503] [2022-12-13 16:52:03,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:52:03,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:52:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:03,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:52:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:03,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:03,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:52:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:04,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:52:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:04,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:04,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:04,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:04,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 16:52:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:04,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:04,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 16:52:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:04,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:04,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:04,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 16:52:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:04,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 16:52:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:04,156 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 16:52:04,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:52:04,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833509503] [2022-12-13 16:52:04,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833509503] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:52:04,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:52:04,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 16:52:04,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398371129] [2022-12-13 16:52:04,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:52:04,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 16:52:04,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:52:04,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 16:52:04,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:52:04,158 INFO L87 Difference]: Start difference. First operand 543 states and 874 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 16:52:09,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:52:09,629 INFO L93 Difference]: Finished difference Result 1340 states and 2234 transitions. [2022-12-13 16:52:09,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 16:52:09,629 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 131 [2022-12-13 16:52:09,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:52:09,633 INFO L225 Difference]: With dead ends: 1340 [2022-12-13 16:52:09,633 INFO L226 Difference]: Without dead ends: 842 [2022-12-13 16:52:09,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-12-13 16:52:09,634 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 2533 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 4048 mSolverCounterSat, 971 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2543 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 5019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 971 IncrementalHoareTripleChecker+Valid, 4048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:52:09,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2543 Valid, 2872 Invalid, 5019 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [971 Valid, 4048 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-12-13 16:52:09,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-12-13 16:52:09,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 548. [2022-12-13 16:52:09,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 425 states have (on average 1.611764705882353) internal successors, (685), 446 states have internal predecessors, (685), 93 states have call successors, (93), 26 states have call predecessors, (93), 29 states have return successors, (102), 88 states have call predecessors, (102), 88 states have call successors, (102) [2022-12-13 16:52:09,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 880 transitions. [2022-12-13 16:52:09,863 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 880 transitions. Word has length 131 [2022-12-13 16:52:09,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:52:09,863 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 880 transitions. [2022-12-13 16:52:09,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 16:52:09,863 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 880 transitions. [2022-12-13 16:52:09,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-13 16:52:09,864 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:52:09,864 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-13 16:52:09,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 16:52:09,864 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:52:09,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:52:09,865 INFO L85 PathProgramCache]: Analyzing trace with hash -2144603058, now seen corresponding path program 1 times [2022-12-13 16:52:09,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:52:09,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753345119] [2022-12-13 16:52:09,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:52:09,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:52:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:09,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:52:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:10,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:10,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:52:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:10,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:52:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:10,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:10,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:10,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:10,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 16:52:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:10,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:10,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 16:52:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:10,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:10,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:10,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 16:52:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:10,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 16:52:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:10,262 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 16:52:10,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:52:10,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753345119] [2022-12-13 16:52:10,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753345119] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:52:10,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351157699] [2022-12-13 16:52:10,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:52:10,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:52:10,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:52:10,264 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:52:10,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 16:52:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:10,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 16:52:10,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:52:10,486 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 16:52:10,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:52:10,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351157699] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:52:10,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:52:10,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 10 [2022-12-13 16:52:10,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106477574] [2022-12-13 16:52:10,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:52:10,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:52:10,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:52:10,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:52:10,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:52:10,488 INFO L87 Difference]: Start difference. First operand 548 states and 880 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2022-12-13 16:52:11,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:52:11,022 INFO L93 Difference]: Finished difference Result 1512 states and 2486 transitions. [2022-12-13 16:52:11,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:52:11,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 135 [2022-12-13 16:52:11,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:52:11,028 INFO L225 Difference]: With dead ends: 1512 [2022-12-13 16:52:11,028 INFO L226 Difference]: Without dead ends: 1009 [2022-12-13 16:52:11,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 161 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:52:11,030 INFO L413 NwaCegarLoop]: 989 mSDtfsCounter, 761 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:52:11,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1694 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:52:11,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2022-12-13 16:52:11,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 994. [2022-12-13 16:52:11,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 770 states have (on average 1.6077922077922078) internal successors, (1238), 807 states have internal predecessors, (1238), 169 states have call successors, (169), 47 states have call predecessors, (169), 54 states have return successors, (200), 165 states have call predecessors, (200), 164 states have call successors, (200) [2022-12-13 16:52:11,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1607 transitions. [2022-12-13 16:52:11,466 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1607 transitions. Word has length 135 [2022-12-13 16:52:11,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:52:11,467 INFO L495 AbstractCegarLoop]: Abstraction has 994 states and 1607 transitions. [2022-12-13 16:52:11,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2022-12-13 16:52:11,467 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1607 transitions. [2022-12-13 16:52:11,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-13 16:52:11,468 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:52:11,468 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-13 16:52:11,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 16:52:11,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 16:52:11,669 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:52:11,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:52:11,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1416848048, now seen corresponding path program 1 times [2022-12-13 16:52:11,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:52:11,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490874779] [2022-12-13 16:52:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:52:11,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:52:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:11,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:52:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:11,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:11,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:52:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:11,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:52:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:11,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:12,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:12,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:12,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 16:52:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:12,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:12,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 16:52:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:12,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:12,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:12,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:52:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:12,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 16:52:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:12,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 16:52:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:12,032 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 16:52:12,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:52:12,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490874779] [2022-12-13 16:52:12,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490874779] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:52:12,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:52:12,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:52:12,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975188737] [2022-12-13 16:52:12,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:52:12,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:52:12,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:52:12,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:52:12,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:52:12,033 INFO L87 Difference]: Start difference. First operand 994 states and 1607 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 16:52:21,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:52:21,525 INFO L93 Difference]: Finished difference Result 3517 states and 5971 transitions. [2022-12-13 16:52:21,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 16:52:21,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 140 [2022-12-13 16:52:21,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:52:21,534 INFO L225 Difference]: With dead ends: 3517 [2022-12-13 16:52:21,535 INFO L226 Difference]: Without dead ends: 2568 [2022-12-13 16:52:21,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-12-13 16:52:21,537 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 5145 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 2098 mSolverCounterSat, 2044 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5154 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 4142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2044 IncrementalHoareTripleChecker+Valid, 2098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:52:21,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5154 Valid, 1081 Invalid, 4142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2044 Valid, 2098 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-12-13 16:52:21,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2022-12-13 16:52:22,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 1940. [2022-12-13 16:52:22,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1940 states, 1498 states have (on average 1.6114819759679573) internal successors, (2414), 1566 states have internal predecessors, (2414), 336 states have call successors, (336), 89 states have call predecessors, (336), 105 states have return successors, (422), 332 states have call predecessors, (422), 331 states have call successors, (422) [2022-12-13 16:52:22,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 3172 transitions. [2022-12-13 16:52:22,480 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 3172 transitions. Word has length 140 [2022-12-13 16:52:22,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:52:22,480 INFO L495 AbstractCegarLoop]: Abstraction has 1940 states and 3172 transitions. [2022-12-13 16:52:22,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 16:52:22,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 3172 transitions. [2022-12-13 16:52:22,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-13 16:52:22,483 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:52:22,483 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-13 16:52:22,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 16:52:22,483 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:52:22,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:52:22,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1124082142, now seen corresponding path program 1 times [2022-12-13 16:52:22,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:52:22,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420962189] [2022-12-13 16:52:22,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:52:22,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:52:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:22,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:52:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:22,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:22,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:52:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:22,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:52:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:22,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:22,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:22,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:22,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 16:52:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:22,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:22,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 16:52:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:22,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:22,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:22,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:52:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:22,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 16:52:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:22,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 16:52:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:22,905 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 16:52:22,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:52:22,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420962189] [2022-12-13 16:52:22,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420962189] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:52:22,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:52:22,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 16:52:22,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462081278] [2022-12-13 16:52:22,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:52:22,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 16:52:22,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:52:22,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 16:52:22,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:52:22,907 INFO L87 Difference]: Start difference. First operand 1940 states and 3172 transitions. Second operand has 11 states, 10 states have (on average 10.1) internal successors, (101), 7 states have internal predecessors, (101), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-12-13 16:52:30,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:52:30,099 INFO L93 Difference]: Finished difference Result 4263 states and 7230 transitions. [2022-12-13 16:52:30,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 16:52:30,099 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.1) internal successors, (101), 7 states have internal predecessors, (101), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 143 [2022-12-13 16:52:30,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:52:30,108 INFO L225 Difference]: With dead ends: 4263 [2022-12-13 16:52:30,108 INFO L226 Difference]: Without dead ends: 2551 [2022-12-13 16:52:30,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-12-13 16:52:30,112 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 3129 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 3710 mSolverCounterSat, 883 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3139 SdHoareTripleChecker+Valid, 2733 SdHoareTripleChecker+Invalid, 4593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 883 IncrementalHoareTripleChecker+Valid, 3710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-12-13 16:52:30,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3139 Valid, 2733 Invalid, 4593 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [883 Valid, 3710 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-12-13 16:52:30,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2551 states. [2022-12-13 16:52:31,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2551 to 1940. [2022-12-13 16:52:31,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1940 states, 1498 states have (on average 1.6001335113484647) internal successors, (2397), 1566 states have internal predecessors, (2397), 336 states have call successors, (336), 89 states have call predecessors, (336), 105 states have return successors, (422), 332 states have call predecessors, (422), 331 states have call successors, (422) [2022-12-13 16:52:31,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 3155 transitions. [2022-12-13 16:52:31,074 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 3155 transitions. Word has length 143 [2022-12-13 16:52:31,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:52:31,075 INFO L495 AbstractCegarLoop]: Abstraction has 1940 states and 3155 transitions. [2022-12-13 16:52:31,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.1) internal successors, (101), 7 states have internal predecessors, (101), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-12-13 16:52:31,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 3155 transitions. [2022-12-13 16:52:31,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 16:52:31,076 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:52:31,076 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-12-13 16:52:31,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 16:52:31,076 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:52:31,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:52:31,077 INFO L85 PathProgramCache]: Analyzing trace with hash -227194032, now seen corresponding path program 1 times [2022-12-13 16:52:31,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:52:31,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308223213] [2022-12-13 16:52:31,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:52:31,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:52:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:31,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:52:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:31,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:31,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:52:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:31,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:52:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:31,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:31,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:31,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:31,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 16:52:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:31,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:31,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 16:52:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:31,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:31,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:31,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:52:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:31,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 16:52:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:31,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 16:52:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:31,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 16:52:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:31,388 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 16:52:31,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:52:31,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308223213] [2022-12-13 16:52:31,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308223213] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:52:31,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:52:31,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:52:31,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583709262] [2022-12-13 16:52:31,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:52:31,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:52:31,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:52:31,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:52:31,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:52:31,390 INFO L87 Difference]: Start difference. First operand 1940 states and 3155 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-13 16:52:38,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:52:38,408 INFO L93 Difference]: Finished difference Result 4461 states and 7555 transitions. [2022-12-13 16:52:38,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 16:52:38,409 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 147 [2022-12-13 16:52:38,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:52:38,418 INFO L225 Difference]: With dead ends: 4461 [2022-12-13 16:52:38,418 INFO L226 Difference]: Without dead ends: 2567 [2022-12-13 16:52:38,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:52:38,422 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 2043 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 2586 mSolverCounterSat, 768 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2053 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 3354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 768 IncrementalHoareTripleChecker+Valid, 2586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-13 16:52:38,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2053 Valid, 1772 Invalid, 3354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [768 Valid, 2586 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-12-13 16:52:38,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2022-12-13 16:52:39,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 1956. [2022-12-13 16:52:39,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1956 states, 1510 states have (on average 1.595364238410596) internal successors, (2409), 1578 states have internal predecessors, (2409), 336 states have call successors, (336), 93 states have call predecessors, (336), 109 states have return successors, (420), 332 states have call predecessors, (420), 331 states have call successors, (420) [2022-12-13 16:52:39,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 3165 transitions. [2022-12-13 16:52:39,408 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 3165 transitions. Word has length 147 [2022-12-13 16:52:39,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:52:39,408 INFO L495 AbstractCegarLoop]: Abstraction has 1956 states and 3165 transitions. [2022-12-13 16:52:39,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-13 16:52:39,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 3165 transitions. [2022-12-13 16:52:39,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-12-13 16:52:39,410 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:52:39,410 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2022-12-13 16:52:39,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 16:52:39,410 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:52:39,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:52:39,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1817295282, now seen corresponding path program 1 times [2022-12-13 16:52:39,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:52:39,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308354007] [2022-12-13 16:52:39,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:52:39,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:52:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:39,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:52:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:39,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:39,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:52:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:39,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:52:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:39,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:39,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:39,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:39,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 16:52:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:39,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:39,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 16:52:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:39,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:39,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:39,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:52:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:39,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 16:52:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:39,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 16:52:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:39,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 16:52:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-13 16:52:39,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:52:39,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308354007] [2022-12-13 16:52:39,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308354007] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:52:39,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:52:39,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 16:52:39,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498287034] [2022-12-13 16:52:39,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:52:39,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 16:52:39,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:52:39,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 16:52:39,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-12-13 16:52:39,823 INFO L87 Difference]: Start difference. First operand 1956 states and 3165 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 9 states have internal predecessors, (101), 6 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2022-12-13 16:52:52,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:52:52,868 INFO L93 Difference]: Finished difference Result 5220 states and 8823 transitions. [2022-12-13 16:52:52,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 16:52:52,869 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 9 states have internal predecessors, (101), 6 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 148 [2022-12-13 16:52:52,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:52:52,881 INFO L225 Difference]: With dead ends: 5220 [2022-12-13 16:52:52,881 INFO L226 Difference]: Without dead ends: 3639 [2022-12-13 16:52:52,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=314, Invalid=946, Unknown=0, NotChecked=0, Total=1260 [2022-12-13 16:52:52,885 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 5278 mSDsluCounter, 2856 mSDsCounter, 0 mSdLazyCounter, 6842 mSolverCounterSat, 1937 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5287 SdHoareTripleChecker+Valid, 3328 SdHoareTripleChecker+Invalid, 8779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1937 IncrementalHoareTripleChecker+Valid, 6842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-12-13 16:52:52,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5287 Valid, 3328 Invalid, 8779 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1937 Valid, 6842 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-12-13 16:52:52,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2022-12-13 16:52:54,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 2778. [2022-12-13 16:52:54,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2778 states, 2157 states have (on average 1.5702364394993047) internal successors, (3387), 2250 states have internal predecessors, (3387), 450 states have call successors, (450), 143 states have call predecessors, (450), 170 states have return successors, (590), 444 states have call predecessors, (590), 445 states have call successors, (590) [2022-12-13 16:52:54,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 4427 transitions. [2022-12-13 16:52:54,765 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 4427 transitions. Word has length 148 [2022-12-13 16:52:54,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:52:54,765 INFO L495 AbstractCegarLoop]: Abstraction has 2778 states and 4427 transitions. [2022-12-13 16:52:54,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 9 states have internal predecessors, (101), 6 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2022-12-13 16:52:54,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 4427 transitions. [2022-12-13 16:52:54,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-12-13 16:52:54,766 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:52:54,767 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2022-12-13 16:52:54,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 16:52:54,767 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:52:54,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:52:54,767 INFO L85 PathProgramCache]: Analyzing trace with hash 531177971, now seen corresponding path program 1 times [2022-12-13 16:52:54,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:52:54,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826732088] [2022-12-13 16:52:54,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:52:54,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:52:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:54,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:52:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:54,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:54,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:52:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:54,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:52:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:55,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:55,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:55,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:55,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 16:52:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:55,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:55,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 16:52:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:55,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:55,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:52:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:55,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:52:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:55,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 16:52:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:55,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 16:52:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:55,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 16:52:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:55,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 16:52:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:55,082 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-13 16:52:55,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:52:55,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826732088] [2022-12-13 16:52:55,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826732088] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:52:55,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:52:55,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:52:55,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251440087] [2022-12-13 16:52:55,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:52:55,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:52:55,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:52:55,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:52:55,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:52:55,083 INFO L87 Difference]: Start difference. First operand 2778 states and 4427 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-13 16:53:07,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:53:07,283 INFO L93 Difference]: Finished difference Result 7906 states and 13071 transitions. [2022-12-13 16:53:07,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 16:53:07,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 153 [2022-12-13 16:53:07,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:53:07,302 INFO L225 Difference]: With dead ends: 7906 [2022-12-13 16:53:07,302 INFO L226 Difference]: Without dead ends: 5503 [2022-12-13 16:53:07,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-12-13 16:53:07,308 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 2575 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 3218 mSolverCounterSat, 1273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2588 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 4491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1273 IncrementalHoareTripleChecker+Valid, 3218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-12-13 16:53:07,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2588 Valid, 1772 Invalid, 4491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1273 Valid, 3218 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-12-13 16:53:07,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5503 states. [2022-12-13 16:53:09,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5503 to 4302. [2022-12-13 16:53:09,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4302 states, 3365 states have (on average 1.5595839524517088) internal successors, (5248), 3490 states have internal predecessors, (5248), 667 states have call successors, (667), 227 states have call predecessors, (667), 269 states have return successors, (873), 668 states have call predecessors, (873), 662 states have call successors, (873) [2022-12-13 16:53:09,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4302 states to 4302 states and 6788 transitions. [2022-12-13 16:53:09,823 INFO L78 Accepts]: Start accepts. Automaton has 4302 states and 6788 transitions. Word has length 153 [2022-12-13 16:53:09,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:53:09,823 INFO L495 AbstractCegarLoop]: Abstraction has 4302 states and 6788 transitions. [2022-12-13 16:53:09,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-13 16:53:09,823 INFO L276 IsEmpty]: Start isEmpty. Operand 4302 states and 6788 transitions. [2022-12-13 16:53:09,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-12-13 16:53:09,826 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:53:09,827 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2022-12-13 16:53:09,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 16:53:09,827 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:53:09,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:53:09,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1840561291, now seen corresponding path program 1 times [2022-12-13 16:53:09,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:53:09,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887379618] [2022-12-13 16:53:09,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:53:09,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:53:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:09,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:53:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:09,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:09,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:53:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:10,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:53:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:10,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:10,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:10,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:10,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 16:53:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:10,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:10,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 16:53:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:10,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:10,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:10,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:53:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:10,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 16:53:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:10,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 16:53:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:10,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 16:53:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:10,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 16:53:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 16:53:10,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:53:10,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887379618] [2022-12-13 16:53:10,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887379618] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:53:10,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480668448] [2022-12-13 16:53:10,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:53:10,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:53:10,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:53:10,217 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:53:10,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 16:53:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:10,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 1549 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:53:10,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:53:10,503 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 16:53:10,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:53:10,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480668448] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:53:10,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:53:10,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2022-12-13 16:53:10,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988261850] [2022-12-13 16:53:10,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:53:10,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:53:10,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:53:10,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:53:10,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-12-13 16:53:10,505 INFO L87 Difference]: Start difference. First operand 4302 states and 6788 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 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) [2022-12-13 16:53:13,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:53:13,384 INFO L93 Difference]: Finished difference Result 8681 states and 13933 transitions. [2022-12-13 16:53:13,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:53:13,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 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 153 [2022-12-13 16:53:13,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:53:13,397 INFO L225 Difference]: With dead ends: 8681 [2022-12-13 16:53:13,397 INFO L226 Difference]: Without dead ends: 4422 [2022-12-13 16:53:13,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 180 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-12-13 16:53:13,406 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 763 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 16:53:13,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 2052 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 16:53:13,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4422 states. [2022-12-13 16:53:15,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4422 to 4422. [2022-12-13 16:53:15,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4422 states, 3470 states have (on average 1.5631123919308358) internal successors, (5424), 3595 states have internal predecessors, (5424), 667 states have call successors, (667), 242 states have call predecessors, (667), 284 states have return successors, (880), 668 states have call predecessors, (880), 662 states have call successors, (880) [2022-12-13 16:53:15,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4422 states to 4422 states and 6971 transitions. [2022-12-13 16:53:15,591 INFO L78 Accepts]: Start accepts. Automaton has 4422 states and 6971 transitions. Word has length 153 [2022-12-13 16:53:15,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:53:15,591 INFO L495 AbstractCegarLoop]: Abstraction has 4422 states and 6971 transitions. [2022-12-13 16:53:15,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 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) [2022-12-13 16:53:15,591 INFO L276 IsEmpty]: Start isEmpty. Operand 4422 states and 6971 transitions. [2022-12-13 16:53:15,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-12-13 16:53:15,592 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:53:15,592 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2022-12-13 16:53:15,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 16:53:15,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:53:15,794 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:53:15,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:53:15,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1767281559, now seen corresponding path program 1 times [2022-12-13 16:53:15,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:53:15,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712643103] [2022-12-13 16:53:15,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:53:15,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:53:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:15,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:53:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:15,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:15,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:53:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:16,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:53:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:16,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:16,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:16,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:16,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:53:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:16,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:16,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 16:53:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:16,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:16,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:16,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 16:53:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:16,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 16:53:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:16,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 16:53:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:16,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 16:53:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:16,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 16:53:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 16:53:16,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:53:16,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712643103] [2022-12-13 16:53:16,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712643103] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:53:16,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:53:16,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 16:53:16,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624270895] [2022-12-13 16:53:16,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:53:16,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:53:16,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:53:16,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:53:16,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:53:16,214 INFO L87 Difference]: Start difference. First operand 4422 states and 6971 transitions. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-13 16:53:25,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:53:25,680 INFO L93 Difference]: Finished difference Result 5719 states and 9455 transitions. [2022-12-13 16:53:25,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 16:53:25,681 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 155 [2022-12-13 16:53:25,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:53:25,700 INFO L225 Difference]: With dead ends: 5719 [2022-12-13 16:53:25,700 INFO L226 Difference]: Without dead ends: 5704 [2022-12-13 16:53:25,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-12-13 16:53:25,703 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 1896 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 3881 mSolverCounterSat, 725 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1907 SdHoareTripleChecker+Valid, 2035 SdHoareTripleChecker+Invalid, 4606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 725 IncrementalHoareTripleChecker+Valid, 3881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:53:25,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1907 Valid, 2035 Invalid, 4606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [725 Valid, 3881 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-12-13 16:53:25,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5704 states. [2022-12-13 16:53:27,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5704 to 4434. [2022-12-13 16:53:27,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 3482 states have (on average 1.5611717403790926) internal successors, (5436), 3607 states have internal predecessors, (5436), 667 states have call successors, (667), 242 states have call predecessors, (667), 284 states have return successors, (880), 668 states have call predecessors, (880), 662 states have call successors, (880) [2022-12-13 16:53:27,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 6983 transitions. [2022-12-13 16:53:27,849 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 6983 transitions. Word has length 155 [2022-12-13 16:53:27,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:53:27,850 INFO L495 AbstractCegarLoop]: Abstraction has 4434 states and 6983 transitions. [2022-12-13 16:53:27,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-13 16:53:27,850 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 6983 transitions. [2022-12-13 16:53:27,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-12-13 16:53:27,851 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:53:27,851 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2022-12-13 16:53:27,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-13 16:53:27,851 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:53:27,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:53:27,852 INFO L85 PathProgramCache]: Analyzing trace with hash -926374894, now seen corresponding path program 1 times [2022-12-13 16:53:27,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:53:27,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502726571] [2022-12-13 16:53:27,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:53:27,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:53:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:27,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:53:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:27,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:27,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:53:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:28,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:53:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:28,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:28,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:28,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:28,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:53:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:28,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:28,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 16:53:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:28,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:28,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:28,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 16:53:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:28,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 16:53:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:28,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 16:53:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:28,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 16:53:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:28,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 16:53:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:28,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 16:53:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:28,215 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 16:53:28,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:53:28,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502726571] [2022-12-13 16:53:28,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502726571] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:53:28,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:53:28,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 16:53:28,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667933067] [2022-12-13 16:53:28,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:53:28,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 16:53:28,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:53:28,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 16:53:28,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:53:28,217 INFO L87 Difference]: Start difference. First operand 4434 states and 6983 transitions. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 6 states have internal predecessors, (107), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) [2022-12-13 16:53:37,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:53:37,173 INFO L93 Difference]: Finished difference Result 5572 states and 9179 transitions. [2022-12-13 16:53:37,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 16:53:37,174 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 6 states have internal predecessors, (107), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) Word has length 161 [2022-12-13 16:53:37,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:53:37,191 INFO L225 Difference]: With dead ends: 5572 [2022-12-13 16:53:37,191 INFO L226 Difference]: Without dead ends: 5557 [2022-12-13 16:53:37,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2022-12-13 16:53:37,194 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 1771 mSDsluCounter, 2541 mSDsCounter, 0 mSdLazyCounter, 4703 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1847 SdHoareTripleChecker+Valid, 3021 SdHoareTripleChecker+Invalid, 5295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 4703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-13 16:53:37,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1847 Valid, 3021 Invalid, 5295 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [592 Valid, 4703 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-12-13 16:53:37,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5557 states. [2022-12-13 16:53:39,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5557 to 4434. [2022-12-13 16:53:39,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 3482 states have (on average 1.5591614014933945) internal successors, (5429), 3607 states have internal predecessors, (5429), 667 states have call successors, (667), 242 states have call predecessors, (667), 284 states have return successors, (880), 668 states have call predecessors, (880), 662 states have call successors, (880) [2022-12-13 16:53:39,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 6976 transitions. [2022-12-13 16:53:39,650 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 6976 transitions. Word has length 161 [2022-12-13 16:53:39,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:53:39,650 INFO L495 AbstractCegarLoop]: Abstraction has 4434 states and 6976 transitions. [2022-12-13 16:53:39,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 6 states have internal predecessors, (107), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) [2022-12-13 16:53:39,651 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 6976 transitions. [2022-12-13 16:53:39,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-12-13 16:53:39,652 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:53:39,653 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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] [2022-12-13 16:53:39,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-13 16:53:39,653 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:53:39,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:53:39,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1928300679, now seen corresponding path program 1 times [2022-12-13 16:53:39,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:53:39,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156278848] [2022-12-13 16:53:39,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:53:39,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:53:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:39,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:53:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:39,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:39,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:53:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:40,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:53:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:40,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:40,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:40,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:40,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:53:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:40,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:40,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 16:53:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:40,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:40,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:40,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 16:53:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:40,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 16:53:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:40,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 16:53:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:40,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 16:53:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:40,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 16:53:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:40,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 16:53:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:40,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 16:53:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:40,220 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-13 16:53:40,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:53:40,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156278848] [2022-12-13 16:53:40,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156278848] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:53:40,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981725757] [2022-12-13 16:53:40,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:53:40,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:53:40,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:53:40,222 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:53:40,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 16:53:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:40,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 16:53:40,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:53:40,517 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-12-13 16:53:40,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:53:40,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981725757] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:53:40,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:53:40,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-12-13 16:53:40,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25606812] [2022-12-13 16:53:40,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:53:40,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:53:40,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:53:40,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:53:40,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:53:40,519 INFO L87 Difference]: Start difference. First operand 4434 states and 6976 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-12-13 16:53:47,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:53:47,825 INFO L93 Difference]: Finished difference Result 14173 states and 22789 transitions. [2022-12-13 16:53:47,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:53:47,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 172 [2022-12-13 16:53:47,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:53:47,856 INFO L225 Difference]: With dead ends: 14173 [2022-12-13 16:53:47,856 INFO L226 Difference]: Without dead ends: 9784 [2022-12-13 16:53:47,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 209 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-12-13 16:53:47,865 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 1813 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1888 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:53:47,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1888 Valid, 929 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 16:53:47,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9784 states. [2022-12-13 16:53:53,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9784 to 9395. [2022-12-13 16:53:53,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9395 states, 7267 states have (on average 1.56034126874914) internal successors, (11339), 7563 states have internal predecessors, (11339), 1542 states have call successors, (1542), 479 states have call predecessors, (1542), 585 states have return successors, (2180), 1555 states have call predecessors, (2180), 1537 states have call successors, (2180) [2022-12-13 16:53:53,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9395 states to 9395 states and 15061 transitions. [2022-12-13 16:53:53,085 INFO L78 Accepts]: Start accepts. Automaton has 9395 states and 15061 transitions. Word has length 172 [2022-12-13 16:53:53,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:53:53,085 INFO L495 AbstractCegarLoop]: Abstraction has 9395 states and 15061 transitions. [2022-12-13 16:53:53,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-12-13 16:53:53,085 INFO L276 IsEmpty]: Start isEmpty. Operand 9395 states and 15061 transitions. [2022-12-13 16:53:53,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-12-13 16:53:53,088 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:53:53,088 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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] [2022-12-13 16:53:53,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 16:53:53,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-13 16:53:53,290 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:53:53,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:53:53,291 INFO L85 PathProgramCache]: Analyzing trace with hash -352359526, now seen corresponding path program 1 times [2022-12-13 16:53:53,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:53:53,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671819602] [2022-12-13 16:53:53,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:53:53,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:53:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:53,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:53:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:53,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:53,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:53:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:53,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:53:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:53,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:53,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:53,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:53,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:53:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:53,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:53,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 16:53:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:53,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:53,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:53:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:53,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 16:53:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:53,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 16:53:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:53,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 16:53:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:53,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 16:53:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:53,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 16:53:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:53,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 16:53:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:53,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 16:53:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:53,829 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-13 16:53:53,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:53:53,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671819602] [2022-12-13 16:53:53,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671819602] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:53:53,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348255549] [2022-12-13 16:53:53,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:53:53,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:53:53,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:53:53,830 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:53:53,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 16:53:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:53,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 1606 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 16:53:53,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:53:54,089 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-12-13 16:53:54,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:53:54,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348255549] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:53:54,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:53:54,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-12-13 16:53:54,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406345674] [2022-12-13 16:53:54,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:53:54,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:53:54,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:53:54,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:53:54,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:53:54,091 INFO L87 Difference]: Start difference. First operand 9395 states and 15061 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-12-13 16:54:09,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:54:09,742 INFO L93 Difference]: Finished difference Result 30558 states and 50500 transitions. [2022-12-13 16:54:09,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:54:09,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 173 [2022-12-13 16:54:09,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:54:09,812 INFO L225 Difference]: With dead ends: 30558 [2022-12-13 16:54:09,812 INFO L226 Difference]: Without dead ends: 21208 [2022-12-13 16:54:09,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 210 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-12-13 16:54:09,834 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 1820 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 16:54:09,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1894 Valid, 885 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 16:54:09,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21208 states. [2022-12-13 16:54:23,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21208 to 20375. [2022-12-13 16:54:23,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20375 states, 15468 states have (on average 1.5590250840444788) internal successors, (24115), 16182 states have internal predecessors, (24115), 3692 states have call successors, (3692), 953 states have call predecessors, (3692), 1214 states have return successors, (5715), 3743 states have call predecessors, (5715), 3687 states have call successors, (5715) [2022-12-13 16:54:23,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20375 states to 20375 states and 33522 transitions. [2022-12-13 16:54:23,475 INFO L78 Accepts]: Start accepts. Automaton has 20375 states and 33522 transitions. Word has length 173 [2022-12-13 16:54:23,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:54:23,475 INFO L495 AbstractCegarLoop]: Abstraction has 20375 states and 33522 transitions. [2022-12-13 16:54:23,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-12-13 16:54:23,475 INFO L276 IsEmpty]: Start isEmpty. Operand 20375 states and 33522 transitions. [2022-12-13 16:54:23,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-12-13 16:54:23,478 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:54:23,478 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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, 1] [2022-12-13 16:54:23,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 16:54:23,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:54:23,680 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:54:23,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:23,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1961622057, now seen corresponding path program 1 times [2022-12-13 16:54:23,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:54:23,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227469101] [2022-12-13 16:54:23,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:23,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:54:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:23,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:54:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:23,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:54:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:23,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:54:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:24,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:54:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:24,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:54:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:24,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:54:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:24,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:54:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:24,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:54:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:24,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:54:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:24,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 16:54:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:24,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:54:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:24,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:54:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:24,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 16:54:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:24,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 16:54:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:24,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 16:54:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:24,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 16:54:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:24,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 16:54:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:24,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 16:54:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:24,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 16:54:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:24,330 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-13 16:54:24,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:54:24,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227469101] [2022-12-13 16:54:24,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227469101] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:54:24,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839567741] [2022-12-13 16:54:24,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:24,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:54:24,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:54:24,332 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:54:24,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 16:54:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:24,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 1608 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 16:54:24,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:24,617 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-12-13 16:54:24,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:54:24,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839567741] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:54:24,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:54:24,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-12-13 16:54:24,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871920156] [2022-12-13 16:54:24,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:54:24,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:54:24,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:54:24,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:54:24,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:54:24,619 INFO L87 Difference]: Start difference. First operand 20375 states and 33522 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-12-13 16:54:59,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:54:59,069 INFO L93 Difference]: Finished difference Result 67354 states and 115860 transitions. [2022-12-13 16:54:59,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:54:59,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 174 [2022-12-13 16:54:59,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:54:59,274 INFO L225 Difference]: With dead ends: 67354 [2022-12-13 16:54:59,274 INFO L226 Difference]: Without dead ends: 47024 [2022-12-13 16:54:59,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 211 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-12-13 16:54:59,335 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 1811 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1884 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 16:54:59,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1884 Valid, 880 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 16:54:59,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47024 states. [2022-12-13 16:55:29,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47024 to 45297. [2022-12-13 16:55:29,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45297 states, 33642 states have (on average 1.5560014267879436) internal successors, (52347), 35393 states have internal predecessors, (52347), 9114 states have call successors, (9114), 1901 states have call predecessors, (9114), 2540 states have return successors, (15792), 9283 states have call predecessors, (15792), 9109 states have call successors, (15792) [2022-12-13 16:55:29,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45297 states to 45297 states and 77253 transitions. [2022-12-13 16:55:29,886 INFO L78 Accepts]: Start accepts. Automaton has 45297 states and 77253 transitions. Word has length 174 [2022-12-13 16:55:29,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:55:29,886 INFO L495 AbstractCegarLoop]: Abstraction has 45297 states and 77253 transitions. [2022-12-13 16:55:29,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-12-13 16:55:29,887 INFO L276 IsEmpty]: Start isEmpty. Operand 45297 states and 77253 transitions. [2022-12-13 16:55:29,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-12-13 16:55:29,890 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:55:29,890 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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, 1, 1] [2022-12-13 16:55:29,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 16:55:30,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-12-13 16:55:30,092 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:55:30,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:55:30,094 INFO L85 PathProgramCache]: Analyzing trace with hash 680611004, now seen corresponding path program 1 times [2022-12-13 16:55:30,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:55:30,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610312062] [2022-12-13 16:55:30,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:55:30,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:55:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:55:30,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:55:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:55:30,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:55:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:55:30,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:55:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:55:30,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:55:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:55:30,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:55:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:55:30,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:55:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:55:30,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:55:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:55:30,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:55:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:55:30,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:55:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:55:30,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 16:55:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:55:30,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:55:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:55:30,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:55:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:55:30,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 16:55:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:55:30,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 16:55:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:55:30,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 16:55:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:55:30,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 16:55:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:55:30,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 16:55:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:55:30,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 16:55:30,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:55:30,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 16:55:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:55:30,613 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-13 16:55:30,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:55:30,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610312062] [2022-12-13 16:55:30,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610312062] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:55:30,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143322043] [2022-12-13 16:55:30,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:55:30,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:55:30,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:55:30,615 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:55:30,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 16:55:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:55:30,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 1610 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 16:55:30,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:55:30,910 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-12-13 16:55:30,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:55:30,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143322043] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:55:30,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:55:30,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-12-13 16:55:30,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527430281] [2022-12-13 16:55:30,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:55:30,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:55:30,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:55:30,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:55:30,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:55:30,912 INFO L87 Difference]: Start difference. First operand 45297 states and 77253 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-12-13 16:56:53,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:56:53,166 INFO L93 Difference]: Finished difference Result 152028 states and 277258 transitions. [2022-12-13 16:56:53,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:56:53,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 175 [2022-12-13 16:56:53,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:56:53,816 INFO L225 Difference]: With dead ends: 152028 [2022-12-13 16:56:53,817 INFO L226 Difference]: Without dead ends: 106776 [2022-12-13 16:56:54,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 212 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-12-13 16:56:54,012 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 1802 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1874 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 16:56:54,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1874 Valid, 878 Invalid, 1705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 16:56:54,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106776 states. [2022-12-13 16:58:10,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106776 to 103451. [2022-12-13 16:58:10,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103451 states, 74996 states have (on average 1.5516427542802282) internal successors, (116367), 79356 states have internal predecessors, (116367), 23084 states have call successors, (23084), 3797 states have call predecessors, (23084), 5370 states have return successors, (45819), 23615 states have call predecessors, (45819), 23079 states have call successors, (45819) [2022-12-13 16:58:11,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103451 states to 103451 states and 185270 transitions. [2022-12-13 16:58:11,662 INFO L78 Accepts]: Start accepts. Automaton has 103451 states and 185270 transitions. Word has length 175 [2022-12-13 16:58:11,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:58:11,662 INFO L495 AbstractCegarLoop]: Abstraction has 103451 states and 185270 transitions. [2022-12-13 16:58:11,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-12-13 16:58:11,663 INFO L276 IsEmpty]: Start isEmpty. Operand 103451 states and 185270 transitions. [2022-12-13 16:58:11,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-12-13 16:58:11,667 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:58:11,667 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1] [2022-12-13 16:58:11,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 16:58:11,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-12-13 16:58:11,871 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:58:11,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:58:11,873 INFO L85 PathProgramCache]: Analyzing trace with hash -376022069, now seen corresponding path program 1 times [2022-12-13 16:58:11,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:58:11,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235729302] [2022-12-13 16:58:11,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:58:11,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:58:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:12,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 16:58:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:12,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:58:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:12,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:58:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:12,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:58:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:12,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:58:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:12,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:58:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:12,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:58:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:12,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:58:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:12,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:58:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:12,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 16:58:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:12,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:58:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:12,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:58:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:12,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 16:58:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:12,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 16:58:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:12,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 16:58:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:12,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 16:58:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:12,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 16:58:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:12,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 16:58:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:12,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 16:58:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:12,447 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-13 16:58:12,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:58:12,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235729302] [2022-12-13 16:58:12,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235729302] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:58:12,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889019846] [2022-12-13 16:58:12,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:58:12,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:58:12,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:58:12,449 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:58:12,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47dc3f1f-ee19-4c7b-9d91-caa116eae481/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 16:58:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:12,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 16:58:12,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:58:12,797 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-12-13 16:58:12,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:58:12,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889019846] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:58:12,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:58:12,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-12-13 16:58:12,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334273162] [2022-12-13 16:58:12,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:58:12,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:58:12,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:58:12,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:58:12,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:58:12,798 INFO L87 Difference]: Start difference. First operand 103451 states and 185270 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-12-13 17:01:44,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:01:44,471 INFO L93 Difference]: Finished difference Result 351785 states and 698889 transitions. [2022-12-13 17:01:44,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:01:44,472 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), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 176 [2022-12-13 17:01:44,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:01:46,464 INFO L225 Difference]: With dead ends: 351785 [2022-12-13 17:01:46,464 INFO L226 Difference]: Without dead ends: 248369 [2022-12-13 17:01:47,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 213 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-12-13 17:01:47,088 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 1783 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1854 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:01:47,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1854 Valid, 959 Invalid, 1700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 17:01:47,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248369 states.