./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R --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 2d5ef49da8a464b4b8c9ada6da6f38848fd0a828ef607f1296d8e73281f8aa1e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 15:46:21,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:46:21,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:46:21,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:46:21,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:46:21,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:46:21,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:46:21,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:46:21,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:46:21,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:46:21,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:46:21,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:46:21,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:46:21,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:46:21,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:46:21,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:46:21,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:46:21,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:46:21,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:46:21,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:46:21,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:46:21,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:46:21,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:46:21,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:46:21,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:46:21,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:46:21,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:46:21,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:46:21,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:46:21,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:46:21,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:46:21,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:46:21,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:46:21,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:46:21,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:46:21,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:46:21,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:46:21,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:46:21,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:46:21,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:46:21,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:46:21,718 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 15:46:21,767 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:46:21,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:46:21,768 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:46:21,768 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:46:21,769 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:46:21,769 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:46:21,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:46:21,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:46:21,771 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:46:21,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:46:21,771 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:46:21,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:46:21,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:46:21,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:46:21,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:46:21,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:46:21,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:46:21,773 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:46:21,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:46:21,774 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:46:21,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:46:21,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:46:21,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:46:21,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:46:21,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:46:21,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:46:21,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:46:21,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:46:21,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:46:21,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:46:21,781 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:46:21,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:46:21,782 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:46:21,783 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:46:21,783 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_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d5ef49da8a464b4b8c9ada6da6f38848fd0a828ef607f1296d8e73281f8aa1e [2022-11-25 15:46:22,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:46:22,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:46:22,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:46:22,099 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:46:22,100 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:46:22,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2022-11-25 15:46:25,081 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:46:25,615 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:46:25,616 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2022-11-25 15:46:25,645 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/data/450fb9dae/91b8971979284b02bb95f48ede701643/FLAGb975f671e [2022-11-25 15:46:25,661 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/data/450fb9dae/91b8971979284b02bb95f48ede701643 [2022-11-25 15:46:25,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:46:25,664 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:46:25,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:46:25,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:46:25,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:46:25,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:46:25" (1/1) ... [2022-11-25 15:46:25,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c0ac978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:25, skipping insertion in model container [2022-11-25 15:46:25,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:46:25" (1/1) ... [2022-11-25 15:46:25,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:46:25,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:46:26,288 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_3344b2f1-1a8f-47ec-a246-4e513f372bcd/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[11742,11755] [2022-11-25 15:46:26,375 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_3344b2f1-1a8f-47ec-a246-4e513f372bcd/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[19032,19045] [2022-11-25 15:46:27,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:46:27,268 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:46:27,325 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_3344b2f1-1a8f-47ec-a246-4e513f372bcd/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[11742,11755] [2022-11-25 15:46:27,341 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_3344b2f1-1a8f-47ec-a246-4e513f372bcd/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[19032,19045] [2022-11-25 15:46:27,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:46:27,993 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:46:27,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:27 WrapperNode [2022-11-25 15:46:27,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:46:27,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:46:27,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:46:27,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:46:28,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:27" (1/1) ... [2022-11-25 15:46:28,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:27" (1/1) ... [2022-11-25 15:46:28,436 INFO L138 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5066 [2022-11-25 15:46:28,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:46:28,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:46:28,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:46:28,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:46:28,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:27" (1/1) ... [2022-11-25 15:46:28,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:27" (1/1) ... [2022-11-25 15:46:28,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:27" (1/1) ... [2022-11-25 15:46:28,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:27" (1/1) ... [2022-11-25 15:46:28,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:27" (1/1) ... [2022-11-25 15:46:28,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:27" (1/1) ... [2022-11-25 15:46:28,759 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:27" (1/1) ... [2022-11-25 15:46:28,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:27" (1/1) ... [2022-11-25 15:46:28,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:46:28,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:46:28,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:46:28,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:46:28,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:27" (1/1) ... [2022-11-25 15:46:28,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:46:28,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:46:28,898 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:46:28,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:46:28,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:46:28,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:46:28,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:46:28,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:46:29,087 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:46:29,089 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:46:34,358 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:46:34,404 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:46:34,412 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 15:46:34,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:46:34 BoogieIcfgContainer [2022-11-25 15:46:34,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:46:34,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:46:34,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:46:34,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:46:34,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:46:25" (1/3) ... [2022-11-25 15:46:34,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70430c38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:46:34, skipping insertion in model container [2022-11-25 15:46:34,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:27" (2/3) ... [2022-11-25 15:46:34,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70430c38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:46:34, skipping insertion in model container [2022-11-25 15:46:34,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:46:34" (3/3) ... [2022-11-25 15:46:34,431 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2022-11-25 15:46:34,450 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:46:34,450 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 15:46:34,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:46:34,546 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;@72da92fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:46:34,546 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 15:46:34,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 899 states, 896 states have (on average 1.9051339285714286) internal successors, (1707), 898 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:34,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-25 15:46:34,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:46:34,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:46:34,569 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:46:34,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:34,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1798739915, now seen corresponding path program 1 times [2022-11-25 15:46:34,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:34,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738016854] [2022-11-25 15:46:34,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:34,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:46:34,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:34,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738016854] [2022-11-25 15:46:34,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738016854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:46:34,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:46:34,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:46:34,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429953127] [2022-11-25 15:46:34,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:46:34,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 15:46:34,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:46:34,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 15:46:34,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 15:46:34,954 INFO L87 Difference]: Start difference. First operand has 899 states, 896 states have (on average 1.9051339285714286) internal successors, (1707), 898 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:35,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:46:35,063 INFO L93 Difference]: Finished difference Result 1759 states and 3342 transitions. [2022-11-25 15:46:35,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 15:46:35,065 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-25 15:46:35,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:46:35,091 INFO L225 Difference]: With dead ends: 1759 [2022-11-25 15:46:35,091 INFO L226 Difference]: Without dead ends: 833 [2022-11-25 15:46:35,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 15:46:35,104 INFO L413 NwaCegarLoop]: 1638 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:46:35,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1638 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:46:35,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-11-25 15:46:35,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2022-11-25 15:46:35,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 831 states have (on average 1.8941034897713598) internal successors, (1574), 832 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:35,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1574 transitions. [2022-11-25 15:46:35,223 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1574 transitions. Word has length 24 [2022-11-25 15:46:35,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:46:35,224 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1574 transitions. [2022-11-25 15:46:35,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:35,224 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1574 transitions. [2022-11-25 15:46:35,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-25 15:46:35,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:46:35,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:46:35,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:46:35,231 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:46:35,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:35,232 INFO L85 PathProgramCache]: Analyzing trace with hash 502082675, now seen corresponding path program 1 times [2022-11-25 15:46:35,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:35,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544579726] [2022-11-25 15:46:35,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:35,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:35,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:46:35,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:35,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544579726] [2022-11-25 15:46:35,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544579726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:46:35,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:46:35,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:46:35,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344372998] [2022-11-25 15:46:35,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:46:35,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:46:35,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:46:35,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:46:35,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:46:35,495 INFO L87 Difference]: Start difference. First operand 833 states and 1574 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:35,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:46:35,659 INFO L93 Difference]: Finished difference Result 879 states and 1645 transitions. [2022-11-25 15:46:35,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:46:35,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-25 15:46:35,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:46:35,663 INFO L225 Difference]: With dead ends: 879 [2022-11-25 15:46:35,663 INFO L226 Difference]: Without dead ends: 833 [2022-11-25 15:46:35,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:46:35,665 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 3 mSDsluCounter, 4682 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6254 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:46:35,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6254 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:46:35,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-11-25 15:46:35,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2022-11-25 15:46:35,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 831 states have (on average 1.8567990373044525) internal successors, (1543), 832 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:35,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1543 transitions. [2022-11-25 15:46:35,698 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1543 transitions. Word has length 24 [2022-11-25 15:46:35,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:46:35,699 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1543 transitions. [2022-11-25 15:46:35,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:35,699 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1543 transitions. [2022-11-25 15:46:35,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 15:46:35,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:46:35,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:46:35,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:46:35,702 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:46:35,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:35,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1518044022, now seen corresponding path program 1 times [2022-11-25 15:46:35,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:35,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3032532] [2022-11-25 15:46:35,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:35,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:35,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:46:35,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:35,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3032532] [2022-11-25 15:46:35,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3032532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:46:35,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:46:35,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:46:35,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128713721] [2022-11-25 15:46:35,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:46:35,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:46:35,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:46:36,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:46:36,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:46:36,001 INFO L87 Difference]: Start difference. First operand 833 states and 1543 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:36,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:46:36,278 INFO L93 Difference]: Finished difference Result 1253 states and 2213 transitions. [2022-11-25 15:46:36,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 15:46:36,279 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-25 15:46:36,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:46:36,285 INFO L225 Difference]: With dead ends: 1253 [2022-11-25 15:46:36,286 INFO L226 Difference]: Without dead ends: 1211 [2022-11-25 15:46:36,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-25 15:46:36,295 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 7953 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7953 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:46:36,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7953 Valid, 2746 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:46:36,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-11-25 15:46:36,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 873. [2022-11-25 15:46:36,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8450057405281286) internal successors, (1607), 872 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:36,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1607 transitions. [2022-11-25 15:46:36,327 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1607 transitions. Word has length 54 [2022-11-25 15:46:36,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:46:36,327 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1607 transitions. [2022-11-25 15:46:36,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:36,328 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1607 transitions. [2022-11-25 15:46:36,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 15:46:36,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:46:36,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:46:36,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 15:46:36,337 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:46:36,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:36,339 INFO L85 PathProgramCache]: Analyzing trace with hash 32878714, now seen corresponding path program 1 times [2022-11-25 15:46:36,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:36,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590813767] [2022-11-25 15:46:36,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:36,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:36,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:46:36,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:36,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590813767] [2022-11-25 15:46:36,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590813767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:46:36,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:46:36,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:46:36,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547082745] [2022-11-25 15:46:36,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:46:36,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:46:36,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:46:36,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:46:36,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:46:36,471 INFO L87 Difference]: Start difference. First operand 873 states and 1607 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:36,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:46:36,523 INFO L93 Difference]: Finished difference Result 1026 states and 1850 transitions. [2022-11-25 15:46:36,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:46:36,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-25 15:46:36,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:46:36,530 INFO L225 Difference]: With dead ends: 1026 [2022-11-25 15:46:36,530 INFO L226 Difference]: Without dead ends: 944 [2022-11-25 15:46:36,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:46:36,538 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 1482 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:46:36,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1603 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:46:36,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2022-11-25 15:46:36,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2022-11-25 15:46:36,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.824468085106383) internal successors, (1715), 941 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:36,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1715 transitions. [2022-11-25 15:46:36,575 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1715 transitions. Word has length 56 [2022-11-25 15:46:36,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:46:36,577 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1715 transitions. [2022-11-25 15:46:36,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:36,577 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1715 transitions. [2022-11-25 15:46:36,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 15:46:36,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:46:36,580 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:46:36,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 15:46:36,580 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:46:36,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:36,581 INFO L85 PathProgramCache]: Analyzing trace with hash 99372226, now seen corresponding path program 1 times [2022-11-25 15:46:36,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:36,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816927084] [2022-11-25 15:46:36,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:36,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:36,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:46:36,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:36,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816927084] [2022-11-25 15:46:36,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816927084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:46:36,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:46:36,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:46:36,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869652893] [2022-11-25 15:46:36,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:46:36,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:46:36,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:46:36,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:46:36,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:46:36,958 INFO L87 Difference]: Start difference. First operand 942 states and 1715 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:37,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:46:37,200 INFO L93 Difference]: Finished difference Result 1095 states and 1955 transitions. [2022-11-25 15:46:37,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:46:37,200 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-25 15:46:37,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:46:37,205 INFO L225 Difference]: With dead ends: 1095 [2022-11-25 15:46:37,205 INFO L226 Difference]: Without dead ends: 944 [2022-11-25 15:46:37,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:46:37,206 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 1509 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 1856 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:46:37,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 1856 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:46:37,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2022-11-25 15:46:37,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2022-11-25 15:46:37,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.8223404255319149) internal successors, (1713), 941 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:37,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1713 transitions. [2022-11-25 15:46:37,240 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1713 transitions. Word has length 56 [2022-11-25 15:46:37,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:46:37,241 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1713 transitions. [2022-11-25 15:46:37,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:37,241 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1713 transitions. [2022-11-25 15:46:37,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 15:46:37,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:46:37,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:46:37,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 15:46:37,243 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:46:37,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:37,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1629151369, now seen corresponding path program 1 times [2022-11-25 15:46:37,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:37,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054991039] [2022-11-25 15:46:37,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:37,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:46:37,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:37,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054991039] [2022-11-25 15:46:37,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054991039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:46:37,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:46:37,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:46:37,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131980273] [2022-11-25 15:46:37,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:46:37,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:46:37,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:46:37,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:46:37,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:46:37,581 INFO L87 Difference]: Start difference. First operand 942 states and 1713 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:37,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:46:37,794 INFO L93 Difference]: Finished difference Result 1090 states and 1940 transitions. [2022-11-25 15:46:37,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 15:46:37,794 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-11-25 15:46:37,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:46:37,800 INFO L225 Difference]: With dead ends: 1090 [2022-11-25 15:46:37,800 INFO L226 Difference]: Without dead ends: 1088 [2022-11-25 15:46:37,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-25 15:46:37,802 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 394 mSDsluCounter, 9035 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 10633 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:46:37,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 10633 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:46:37,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2022-11-25 15:46:37,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 948. [2022-11-25 15:46:37,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 946 states have (on average 1.8160676532769555) internal successors, (1718), 947 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:37,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1718 transitions. [2022-11-25 15:46:37,844 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1718 transitions. Word has length 57 [2022-11-25 15:46:37,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:46:37,845 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 1718 transitions. [2022-11-25 15:46:37,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:37,845 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1718 transitions. [2022-11-25 15:46:37,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-25 15:46:37,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:46:37,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:46:37,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 15:46:37,847 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:46:37,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:37,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1409361730, now seen corresponding path program 1 times [2022-11-25 15:46:37,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:37,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843361207] [2022-11-25 15:46:37,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:37,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:37,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:46:37,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:37,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843361207] [2022-11-25 15:46:37,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843361207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:46:37,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:46:37,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:46:37,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965308107] [2022-11-25 15:46:37,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:46:37,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:46:37,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:46:37,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:46:37,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:46:37,918 INFO L87 Difference]: Start difference. First operand 948 states and 1718 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:37,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:46:37,979 INFO L93 Difference]: Finished difference Result 1118 states and 1979 transitions. [2022-11-25 15:46:37,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:46:37,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-25 15:46:37,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:46:37,985 INFO L225 Difference]: With dead ends: 1118 [2022-11-25 15:46:37,985 INFO L226 Difference]: Without dead ends: 1030 [2022-11-25 15:46:37,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:46:37,986 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 1496 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:46:37,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1663 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:46:37,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-11-25 15:46:38,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1028. [2022-11-25 15:46:38,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1026 states have (on average 1.7923976608187135) internal successors, (1839), 1027 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:38,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1839 transitions. [2022-11-25 15:46:38,039 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1839 transitions. Word has length 58 [2022-11-25 15:46:38,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:46:38,040 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1839 transitions. [2022-11-25 15:46:38,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:38,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1839 transitions. [2022-11-25 15:46:38,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-25 15:46:38,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:46:38,041 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:46:38,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 15:46:38,042 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:46:38,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:38,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1383487166, now seen corresponding path program 1 times [2022-11-25 15:46:38,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:38,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337418328] [2022-11-25 15:46:38,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:38,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:38,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:46:38,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:38,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337418328] [2022-11-25 15:46:38,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337418328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:46:38,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:46:38,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:46:38,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415332381] [2022-11-25 15:46:38,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:46:38,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:46:38,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:46:38,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:46:38,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:46:38,100 INFO L87 Difference]: Start difference. First operand 1028 states and 1839 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:38,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:46:38,187 INFO L93 Difference]: Finished difference Result 1474 states and 2519 transitions. [2022-11-25 15:46:38,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:46:38,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-25 15:46:38,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:46:38,194 INFO L225 Difference]: With dead ends: 1474 [2022-11-25 15:46:38,194 INFO L226 Difference]: Without dead ends: 1239 [2022-11-25 15:46:38,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:46:38,197 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1492 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:46:38,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1663 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:46:38,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2022-11-25 15:46:38,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1237. [2022-11-25 15:46:38,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 1235 states have (on average 1.7417004048582996) internal successors, (2151), 1236 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:38,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 2151 transitions. [2022-11-25 15:46:38,328 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 2151 transitions. Word has length 58 [2022-11-25 15:46:38,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:46:38,328 INFO L495 AbstractCegarLoop]: Abstraction has 1237 states and 2151 transitions. [2022-11-25 15:46:38,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:38,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 2151 transitions. [2022-11-25 15:46:38,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-25 15:46:38,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:46:38,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:46:38,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 15:46:38,336 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:46:38,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:38,336 INFO L85 PathProgramCache]: Analyzing trace with hash 696011330, now seen corresponding path program 1 times [2022-11-25 15:46:38,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:38,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399676189] [2022-11-25 15:46:38,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:38,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:38,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:46:38,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:38,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399676189] [2022-11-25 15:46:38,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399676189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:46:38,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:46:38,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:46:38,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210601154] [2022-11-25 15:46:38,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:46:38,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:46:38,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:46:38,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:46:38,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:46:38,411 INFO L87 Difference]: Start difference. First operand 1237 states and 2151 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:38,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:46:38,545 INFO L93 Difference]: Finished difference Result 2077 states and 3413 transitions. [2022-11-25 15:46:38,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:46:38,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-25 15:46:38,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:46:38,551 INFO L225 Difference]: With dead ends: 2077 [2022-11-25 15:46:38,552 INFO L226 Difference]: Without dead ends: 1633 [2022-11-25 15:46:38,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:46:38,555 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 1490 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:46:38,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1665 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:46:38,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2022-11-25 15:46:38,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1631. [2022-11-25 15:46:38,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1629 states have (on average 1.6740331491712708) internal successors, (2727), 1630 states have internal predecessors, (2727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:38,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2727 transitions. [2022-11-25 15:46:38,700 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2727 transitions. Word has length 58 [2022-11-25 15:46:38,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:46:38,700 INFO L495 AbstractCegarLoop]: Abstraction has 1631 states and 2727 transitions. [2022-11-25 15:46:38,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:38,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2727 transitions. [2022-11-25 15:46:38,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-25 15:46:38,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:46:38,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:46:38,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 15:46:38,702 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:46:38,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:38,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1818023102, now seen corresponding path program 1 times [2022-11-25 15:46:38,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:38,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45897131] [2022-11-25 15:46:38,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:38,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:38,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:46:38,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:38,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45897131] [2022-11-25 15:46:38,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45897131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:46:38,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:46:38,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:46:38,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177976240] [2022-11-25 15:46:38,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:46:38,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:46:38,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:46:38,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:46:38,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:46:38,784 INFO L87 Difference]: Start difference. First operand 1631 states and 2727 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:39,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:46:39,073 INFO L93 Difference]: Finished difference Result 3211 states and 5057 transitions. [2022-11-25 15:46:39,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:46:39,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-25 15:46:39,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:46:39,082 INFO L225 Difference]: With dead ends: 3211 [2022-11-25 15:46:39,082 INFO L226 Difference]: Without dead ends: 2373 [2022-11-25 15:46:39,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:46:39,087 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 1488 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:46:39,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1667 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:46:39,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2022-11-25 15:46:39,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2371. [2022-11-25 15:46:39,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2371 states, 2369 states have (on average 1.5968763191219923) internal successors, (3783), 2370 states have internal predecessors, (3783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:39,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 3783 transitions. [2022-11-25 15:46:39,419 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 3783 transitions. Word has length 58 [2022-11-25 15:46:39,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:46:39,420 INFO L495 AbstractCegarLoop]: Abstraction has 2371 states and 3783 transitions. [2022-11-25 15:46:39,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:39,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 3783 transitions. [2022-11-25 15:46:39,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-25 15:46:39,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:46:39,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:46:39,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 15:46:39,422 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:46:39,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:39,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1673218114, now seen corresponding path program 1 times [2022-11-25 15:46:39,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:39,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153339118] [2022-11-25 15:46:39,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:39,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:39,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:46:39,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:39,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153339118] [2022-11-25 15:46:39,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153339118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:46:39,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:46:39,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:46:39,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961757719] [2022-11-25 15:46:39,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:46:39,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:46:39,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:46:39,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:46:39,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:46:39,504 INFO L87 Difference]: Start difference. First operand 2371 states and 3783 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:40,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:46:40,044 INFO L93 Difference]: Finished difference Result 5335 states and 8057 transitions. [2022-11-25 15:46:40,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:46:40,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-25 15:46:40,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:46:40,057 INFO L225 Difference]: With dead ends: 5335 [2022-11-25 15:46:40,059 INFO L226 Difference]: Without dead ends: 3757 [2022-11-25 15:46:40,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:46:40,062 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 1494 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:46:40,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1669 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:46:40,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2022-11-25 15:46:40,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 3755. [2022-11-25 15:46:40,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 3753 states have (on average 1.5195843325339728) internal successors, (5703), 3754 states have internal predecessors, (5703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:40,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5703 transitions. [2022-11-25 15:46:40,491 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5703 transitions. Word has length 58 [2022-11-25 15:46:40,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:46:40,491 INFO L495 AbstractCegarLoop]: Abstraction has 3755 states and 5703 transitions. [2022-11-25 15:46:40,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:40,492 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5703 transitions. [2022-11-25 15:46:40,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 15:46:40,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:46:40,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:46:40,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 15:46:40,493 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:46:40,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:40,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1060668298, now seen corresponding path program 1 times [2022-11-25 15:46:40,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:40,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108861065] [2022-11-25 15:46:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:40,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:40,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:46:40,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:40,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108861065] [2022-11-25 15:46:40,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108861065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:46:40,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:46:40,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:46:40,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433958916] [2022-11-25 15:46:40,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:46:40,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:46:40,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:46:40,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:46:40,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:46:40,570 INFO L87 Difference]: Start difference. First operand 3755 states and 5703 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:45,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:46:45,495 INFO L93 Difference]: Finished difference Result 5259 states and 8576 transitions. [2022-11-25 15:46:45,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:46:45,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-25 15:46:45,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:46:45,512 INFO L225 Difference]: With dead ends: 5259 [2022-11-25 15:46:45,512 INFO L226 Difference]: Without dead ends: 4506 [2022-11-25 15:46:45,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:46:45,515 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 842 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-25 15:46:45,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 579 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-25 15:46:45,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4506 states. [2022-11-25 15:46:45,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4506 to 4506. [2022-11-25 15:46:45,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4506 states, 4504 states have (on average 1.483570159857904) internal successors, (6682), 4505 states have internal predecessors, (6682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:45,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 6682 transitions. [2022-11-25 15:46:45,998 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 6682 transitions. Word has length 63 [2022-11-25 15:46:45,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:46:45,998 INFO L495 AbstractCegarLoop]: Abstraction has 4506 states and 6682 transitions. [2022-11-25 15:46:45,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:45,999 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 6682 transitions. [2022-11-25 15:46:46,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 15:46:46,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:46:46,001 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] [2022-11-25 15:46:46,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 15:46:46,001 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:46:46,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:46,002 INFO L85 PathProgramCache]: Analyzing trace with hash 273219202, now seen corresponding path program 1 times [2022-11-25 15:46:46,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:46,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502683578] [2022-11-25 15:46:46,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:46,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:46,172 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 15:46:46,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:46,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502683578] [2022-11-25 15:46:46,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502683578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:46:46,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:46:46,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:46:46,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067141429] [2022-11-25 15:46:46,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:46:46,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:46:46,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:46:46,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:46:46,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:46:46,175 INFO L87 Difference]: Start difference. First operand 4506 states and 6682 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:48,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:46:48,425 INFO L93 Difference]: Finished difference Result 19110 states and 27488 transitions. [2022-11-25 15:46:48,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:46:48,426 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-25 15:46:48,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:46:48,472 INFO L225 Difference]: With dead ends: 19110 [2022-11-25 15:46:48,472 INFO L226 Difference]: Without dead ends: 16996 [2022-11-25 15:46:48,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:46:48,479 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 6307 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6307 SdHoareTripleChecker+Valid, 3568 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:46:48,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6307 Valid, 3568 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:46:48,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16996 states. [2022-11-25 15:46:49,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16996 to 7050. [2022-11-25 15:46:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7050 states, 7048 states have (on average 1.456583427922815) internal successors, (10266), 7049 states have internal predecessors, (10266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:49,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7050 states to 7050 states and 10266 transitions. [2022-11-25 15:46:49,496 INFO L78 Accepts]: Start accepts. Automaton has 7050 states and 10266 transitions. Word has length 77 [2022-11-25 15:46:49,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:46:49,497 INFO L495 AbstractCegarLoop]: Abstraction has 7050 states and 10266 transitions. [2022-11-25 15:46:49,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:49,498 INFO L276 IsEmpty]: Start isEmpty. Operand 7050 states and 10266 transitions. [2022-11-25 15:46:49,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 15:46:49,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:46:49,500 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] [2022-11-25 15:46:49,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 15:46:49,501 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:46:49,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:49,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1775337602, now seen corresponding path program 1 times [2022-11-25 15:46:49,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:49,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688804722] [2022-11-25 15:46:49,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:49,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 15:46:49,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:49,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688804722] [2022-11-25 15:46:49,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688804722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:46:49,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:46:49,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:46:49,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354479735] [2022-11-25 15:46:49,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:46:49,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:46:49,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:46:49,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:46:49,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:46:49,702 INFO L87 Difference]: Start difference. First operand 7050 states and 10266 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:52,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:46:52,350 INFO L93 Difference]: Finished difference Result 22070 states and 31680 transitions. [2022-11-25 15:46:52,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:46:52,350 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-25 15:46:52,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:46:52,388 INFO L225 Difference]: With dead ends: 22070 [2022-11-25 15:46:52,389 INFO L226 Difference]: Without dead ends: 19108 [2022-11-25 15:46:52,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:46:52,398 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 6351 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6351 SdHoareTripleChecker+Valid, 3615 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:46:52,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6351 Valid, 3615 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:46:52,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19108 states. [2022-11-25 15:46:53,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19108 to 11066. [2022-11-25 15:46:53,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11066 states, 11064 states have (on average 1.4383586406362978) internal successors, (15914), 11065 states have internal predecessors, (15914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:53,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11066 states to 11066 states and 15914 transitions. [2022-11-25 15:46:53,663 INFO L78 Accepts]: Start accepts. Automaton has 11066 states and 15914 transitions. Word has length 77 [2022-11-25 15:46:53,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:46:53,663 INFO L495 AbstractCegarLoop]: Abstraction has 11066 states and 15914 transitions. [2022-11-25 15:46:53,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:53,664 INFO L276 IsEmpty]: Start isEmpty. Operand 11066 states and 15914 transitions. [2022-11-25 15:46:53,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 15:46:53,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:46:53,673 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] [2022-11-25 15:46:53,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 15:46:53,674 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:46:53,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:53,674 INFO L85 PathProgramCache]: Analyzing trace with hash -440131198, now seen corresponding path program 1 times [2022-11-25 15:46:53,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:53,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997035479] [2022-11-25 15:46:53,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:53,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:53,855 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 15:46:53,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:53,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997035479] [2022-11-25 15:46:53,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997035479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:46:53,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:46:53,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:46:53,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371520404] [2022-11-25 15:46:53,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:46:53,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:46:53,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:46:53,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:46:53,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:46:53,858 INFO L87 Difference]: Start difference. First operand 11066 states and 15914 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:56,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:46:56,916 INFO L93 Difference]: Finished difference Result 25030 states and 35856 transitions. [2022-11-25 15:46:56,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:46:56,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-25 15:46:56,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:46:56,964 INFO L225 Difference]: With dead ends: 25030 [2022-11-25 15:46:56,964 INFO L226 Difference]: Without dead ends: 22068 [2022-11-25 15:46:56,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:46:56,973 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6399 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6399 SdHoareTripleChecker+Valid, 3562 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:46:56,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6399 Valid, 3562 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:46:56,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22068 states. [2022-11-25 15:46:58,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22068 to 14026. [2022-11-25 15:46:58,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14026 states, 14024 states have (on average 1.4325442099258414) internal successors, (20090), 14025 states have internal predecessors, (20090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:58,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14026 states to 14026 states and 20090 transitions. [2022-11-25 15:46:58,769 INFO L78 Accepts]: Start accepts. Automaton has 14026 states and 20090 transitions. Word has length 77 [2022-11-25 15:46:58,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:46:58,770 INFO L495 AbstractCegarLoop]: Abstraction has 14026 states and 20090 transitions. [2022-11-25 15:46:58,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:58,770 INFO L276 IsEmpty]: Start isEmpty. Operand 14026 states and 20090 transitions. [2022-11-25 15:46:58,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 15:46:58,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:46:58,774 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] [2022-11-25 15:46:58,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 15:46:58,774 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:46:58,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:58,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1340801666, now seen corresponding path program 1 times [2022-11-25 15:46:58,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:58,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748608359] [2022-11-25 15:46:58,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:58,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:58,933 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 15:46:58,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:58,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748608359] [2022-11-25 15:46:58,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748608359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:46:58,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:46:58,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:46:58,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546893925] [2022-11-25 15:46:58,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:46:58,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:46:58,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:46:58,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:46:58,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:46:58,936 INFO L87 Difference]: Start difference. First operand 14026 states and 20090 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:02,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:47:02,614 INFO L93 Difference]: Finished difference Result 27990 states and 40032 transitions. [2022-11-25 15:47:02,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:47:02,615 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-25 15:47:02,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:47:02,666 INFO L225 Difference]: With dead ends: 27990 [2022-11-25 15:47:02,666 INFO L226 Difference]: Without dead ends: 25028 [2022-11-25 15:47:02,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:47:02,676 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6355 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6355 SdHoareTripleChecker+Valid, 3604 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:47:02,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6355 Valid, 3604 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:47:02,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25028 states. [2022-11-25 15:47:04,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25028 to 16986. [2022-11-25 15:47:04,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16986 states, 16984 states have (on average 1.4287564766839378) internal successors, (24266), 16985 states have internal predecessors, (24266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:04,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16986 states to 16986 states and 24266 transitions. [2022-11-25 15:47:04,847 INFO L78 Accepts]: Start accepts. Automaton has 16986 states and 24266 transitions. Word has length 77 [2022-11-25 15:47:04,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:47:04,847 INFO L495 AbstractCegarLoop]: Abstraction has 16986 states and 24266 transitions. [2022-11-25 15:47:04,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:04,848 INFO L276 IsEmpty]: Start isEmpty. Operand 16986 states and 24266 transitions. [2022-11-25 15:47:04,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 15:47:04,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:47:04,851 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] [2022-11-25 15:47:04,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 15:47:04,852 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:47:04,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:04,852 INFO L85 PathProgramCache]: Analyzing trace with hash 537075586, now seen corresponding path program 1 times [2022-11-25 15:47:04,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:04,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855945753] [2022-11-25 15:47:04,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:04,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:05,069 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 15:47:05,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:05,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855945753] [2022-11-25 15:47:05,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855945753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:47:05,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:47:05,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:47:05,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203783619] [2022-11-25 15:47:05,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:47:05,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:47:05,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:05,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:47:05,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:47:05,072 INFO L87 Difference]: Start difference. First operand 16986 states and 24266 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:09,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:47:09,281 INFO L93 Difference]: Finished difference Result 30950 states and 44208 transitions. [2022-11-25 15:47:09,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:47:09,281 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-25 15:47:09,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:47:09,331 INFO L225 Difference]: With dead ends: 30950 [2022-11-25 15:47:09,331 INFO L226 Difference]: Without dead ends: 27988 [2022-11-25 15:47:09,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:47:09,340 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 6309 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6309 SdHoareTripleChecker+Valid, 3684 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:47:09,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6309 Valid, 3684 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:47:09,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27988 states. [2022-11-25 15:47:12,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27988 to 19946. [2022-11-25 15:47:12,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19946 states, 19944 states have (on average 1.426093060569595) internal successors, (28442), 19945 states have internal predecessors, (28442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:12,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19946 states to 19946 states and 28442 transitions. [2022-11-25 15:47:12,918 INFO L78 Accepts]: Start accepts. Automaton has 19946 states and 28442 transitions. Word has length 77 [2022-11-25 15:47:12,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:47:12,918 INFO L495 AbstractCegarLoop]: Abstraction has 19946 states and 28442 transitions. [2022-11-25 15:47:12,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:12,919 INFO L276 IsEmpty]: Start isEmpty. Operand 19946 states and 28442 transitions. [2022-11-25 15:47:12,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-25 15:47:12,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:47:12,926 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] [2022-11-25 15:47:12,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 15:47:12,926 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:47:12,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:12,927 INFO L85 PathProgramCache]: Analyzing trace with hash 895246760, now seen corresponding path program 1 times [2022-11-25 15:47:12,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:12,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33520751] [2022-11-25 15:47:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:12,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:13,051 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:13,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:13,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33520751] [2022-11-25 15:47:13,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33520751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:47:13,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:47:13,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:47:13,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163493011] [2022-11-25 15:47:13,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:47:13,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:47:13,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:13,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:47:13,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:47:13,053 INFO L87 Difference]: Start difference. First operand 19946 states and 28442 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:15,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:47:15,830 INFO L93 Difference]: Finished difference Result 38350 states and 54428 transitions. [2022-11-25 15:47:15,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:47:15,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-11-25 15:47:15,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:47:15,853 INFO L225 Difference]: With dead ends: 38350 [2022-11-25 15:47:15,853 INFO L226 Difference]: Without dead ends: 19948 [2022-11-25 15:47:15,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:47:15,873 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 45 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3108 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:47:15,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3108 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:47:15,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19948 states. [2022-11-25 15:47:18,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19948 to 19946. [2022-11-25 15:47:18,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19946 states, 19944 states have (on average 1.411251504211793) internal successors, (28146), 19945 states have internal predecessors, (28146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:18,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19946 states to 19946 states and 28146 transitions. [2022-11-25 15:47:18,900 INFO L78 Accepts]: Start accepts. Automaton has 19946 states and 28146 transitions. Word has length 78 [2022-11-25 15:47:18,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:47:18,900 INFO L495 AbstractCegarLoop]: Abstraction has 19946 states and 28146 transitions. [2022-11-25 15:47:18,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:18,900 INFO L276 IsEmpty]: Start isEmpty. Operand 19946 states and 28146 transitions. [2022-11-25 15:47:18,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-25 15:47:18,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:47:18,904 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] [2022-11-25 15:47:18,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 15:47:18,904 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:47:18,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:18,905 INFO L85 PathProgramCache]: Analyzing trace with hash -615640646, now seen corresponding path program 1 times [2022-11-25 15:47:18,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:18,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881509434] [2022-11-25 15:47:18,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:18,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:19,009 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:19,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:19,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881509434] [2022-11-25 15:47:19,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881509434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:47:19,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:47:19,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:47:19,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170373512] [2022-11-25 15:47:19,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:47:19,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:47:19,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:19,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:47:19,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:47:19,013 INFO L87 Difference]: Start difference. First operand 19946 states and 28146 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:20,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:47:20,288 INFO L93 Difference]: Finished difference Result 26833 states and 37840 transitions. [2022-11-25 15:47:20,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:47:20,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-11-25 15:47:20,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:47:20,304 INFO L225 Difference]: With dead ends: 26833 [2022-11-25 15:47:20,304 INFO L226 Difference]: Without dead ends: 8431 [2022-11-25 15:47:20,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:47:20,322 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 39 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:47:20,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3105 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:47:20,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8431 states. [2022-11-25 15:47:21,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8431 to 8423. [2022-11-25 15:47:21,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8423 states, 8421 states have (on average 1.4296401852511578) internal successors, (12039), 8422 states have internal predecessors, (12039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:21,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8423 states to 8423 states and 12039 transitions. [2022-11-25 15:47:21,629 INFO L78 Accepts]: Start accepts. Automaton has 8423 states and 12039 transitions. Word has length 79 [2022-11-25 15:47:21,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:47:21,630 INFO L495 AbstractCegarLoop]: Abstraction has 8423 states and 12039 transitions. [2022-11-25 15:47:21,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:21,630 INFO L276 IsEmpty]: Start isEmpty. Operand 8423 states and 12039 transitions. [2022-11-25 15:47:21,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-25 15:47:21,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:47:21,633 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] [2022-11-25 15:47:21,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 15:47:21,633 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:47:21,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:21,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1683802150, now seen corresponding path program 1 times [2022-11-25 15:47:21,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:21,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942870331] [2022-11-25 15:47:21,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:21,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:21,732 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:21,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:21,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942870331] [2022-11-25 15:47:21,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942870331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:47:21,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:47:21,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:47:21,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517060384] [2022-11-25 15:47:21,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:47:21,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:47:21,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:21,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:47:21,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:47:21,734 INFO L87 Difference]: Start difference. First operand 8423 states and 12039 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:22,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:47:22,378 INFO L93 Difference]: Finished difference Result 11859 states and 16825 transitions. [2022-11-25 15:47:22,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:47:22,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-25 15:47:22,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:47:22,384 INFO L225 Difference]: With dead ends: 11859 [2022-11-25 15:47:22,384 INFO L226 Difference]: Without dead ends: 4993 [2022-11-25 15:47:22,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:47:22,390 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 41 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:47:22,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3084 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:47:22,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4993 states. [2022-11-25 15:47:22,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4993 to 4991. [2022-11-25 15:47:22,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4991 states, 4989 states have (on average 1.44377630787733) internal successors, (7203), 4990 states have internal predecessors, (7203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:22,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4991 states to 4991 states and 7203 transitions. [2022-11-25 15:47:22,836 INFO L78 Accepts]: Start accepts. Automaton has 4991 states and 7203 transitions. Word has length 80 [2022-11-25 15:47:22,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:47:22,837 INFO L495 AbstractCegarLoop]: Abstraction has 4991 states and 7203 transitions. [2022-11-25 15:47:22,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:22,837 INFO L276 IsEmpty]: Start isEmpty. Operand 4991 states and 7203 transitions. [2022-11-25 15:47:22,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-25 15:47:22,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:47:22,839 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] [2022-11-25 15:47:22,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 15:47:22,839 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:47:22,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:22,840 INFO L85 PathProgramCache]: Analyzing trace with hash 263472268, now seen corresponding path program 1 times [2022-11-25 15:47:22,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:22,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626533056] [2022-11-25 15:47:22,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:22,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:22,974 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:22,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:22,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626533056] [2022-11-25 15:47:22,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626533056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:47:22,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:47:22,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:47:22,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321814401] [2022-11-25 15:47:22,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:47:22,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:47:22,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:22,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:47:22,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:47:22,977 INFO L87 Difference]: Start difference. First operand 4991 states and 7203 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:23,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:47:23,416 INFO L93 Difference]: Finished difference Result 6711 states and 9571 transitions. [2022-11-25 15:47:23,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:47:23,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-25 15:47:23,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:47:23,421 INFO L225 Difference]: With dead ends: 6711 [2022-11-25 15:47:23,421 INFO L226 Difference]: Without dead ends: 3277 [2022-11-25 15:47:23,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:47:23,425 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 38 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:47:23,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3069 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:47:23,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2022-11-25 15:47:23,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 3275. [2022-11-25 15:47:23,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3275 states, 3273 states have (on average 1.4699052856706385) internal successors, (4811), 3274 states have internal predecessors, (4811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:23,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 4811 transitions. [2022-11-25 15:47:23,722 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 4811 transitions. Word has length 82 [2022-11-25 15:47:23,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:47:23,722 INFO L495 AbstractCegarLoop]: Abstraction has 3275 states and 4811 transitions. [2022-11-25 15:47:23,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:23,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 4811 transitions. [2022-11-25 15:47:23,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-25 15:47:23,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:47:23,724 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] [2022-11-25 15:47:23,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 15:47:23,724 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:47:23,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:23,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1956730946, now seen corresponding path program 1 times [2022-11-25 15:47:23,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:23,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702879748] [2022-11-25 15:47:23,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:23,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:23,821 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:23,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:23,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702879748] [2022-11-25 15:47:23,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702879748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:47:23,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:47:23,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:47:23,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826503167] [2022-11-25 15:47:23,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:47:23,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:47:23,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:23,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:47:23,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:47:23,824 INFO L87 Difference]: Start difference. First operand 3275 states and 4811 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:24,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:47:24,039 INFO L93 Difference]: Finished difference Result 4137 states and 5983 transitions. [2022-11-25 15:47:24,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:47:24,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-11-25 15:47:24,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:47:24,042 INFO L225 Difference]: With dead ends: 4137 [2022-11-25 15:47:24,043 INFO L226 Difference]: Without dead ends: 2419 [2022-11-25 15:47:24,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:47:24,045 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 35 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3054 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:47:24,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3054 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:47:24,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2419 states. [2022-11-25 15:47:24,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2419 to 2417. [2022-11-25 15:47:24,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2417 states, 2415 states have (on average 1.5022774327122153) internal successors, (3628), 2416 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:24,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2417 states to 2417 states and 3628 transitions. [2022-11-25 15:47:24,219 INFO L78 Accepts]: Start accepts. Automaton has 2417 states and 3628 transitions. Word has length 84 [2022-11-25 15:47:24,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:47:24,220 INFO L495 AbstractCegarLoop]: Abstraction has 2417 states and 3628 transitions. [2022-11-25 15:47:24,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:24,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2417 states and 3628 transitions. [2022-11-25 15:47:24,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-25 15:47:24,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:47:24,221 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] [2022-11-25 15:47:24,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-25 15:47:24,222 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:47:24,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:24,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1389986160, now seen corresponding path program 1 times [2022-11-25 15:47:24,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:24,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141817166] [2022-11-25 15:47:24,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:24,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:24,731 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:24,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:24,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141817166] [2022-11-25 15:47:24,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141817166] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:47:24,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015892165] [2022-11-25 15:47:24,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:24,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:47:24,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:47:24,741 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:47:24,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 15:47:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:24,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 15:47:24,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:47:25,282 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 15:47:25,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:47:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 15:47:25,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015892165] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:47:25,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:47:25,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 14 [2022-11-25 15:47:25,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904824081] [2022-11-25 15:47:25,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:47:25,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 15:47:25,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:25,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 15:47:25,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-25 15:47:25,486 INFO L87 Difference]: Start difference. First operand 2417 states and 3628 transitions. Second operand has 14 states, 14 states have (on average 17.214285714285715) internal successors, (241), 14 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:29,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:47:29,818 INFO L93 Difference]: Finished difference Result 9129 states and 12632 transitions. [2022-11-25 15:47:29,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-25 15:47:29,819 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.214285714285715) internal successors, (241), 14 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-25 15:47:29,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:47:29,829 INFO L225 Difference]: With dead ends: 9129 [2022-11-25 15:47:29,830 INFO L226 Difference]: Without dead ends: 8269 [2022-11-25 15:47:29,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=438, Invalid=1454, Unknown=0, NotChecked=0, Total=1892 [2022-11-25 15:47:29,834 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 15375 mSDsluCounter, 3534 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15375 SdHoareTripleChecker+Valid, 5063 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 15:47:29,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15375 Valid, 5063 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 15:47:29,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8269 states. [2022-11-25 15:47:30,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8269 to 6753. [2022-11-25 15:47:30,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6753 states, 6751 states have (on average 1.3543178788327654) internal successors, (9143), 6752 states have internal predecessors, (9143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:30,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6753 states to 6753 states and 9143 transitions. [2022-11-25 15:47:30,906 INFO L78 Accepts]: Start accepts. Automaton has 6753 states and 9143 transitions. Word has length 86 [2022-11-25 15:47:30,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:47:30,906 INFO L495 AbstractCegarLoop]: Abstraction has 6753 states and 9143 transitions. [2022-11-25 15:47:30,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.214285714285715) internal successors, (241), 14 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:30,906 INFO L276 IsEmpty]: Start isEmpty. Operand 6753 states and 9143 transitions. [2022-11-25 15:47:30,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-25 15:47:30,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:47:30,907 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:47:30,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 15:47:31,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-25 15:47:31,111 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:47:31,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:31,111 INFO L85 PathProgramCache]: Analyzing trace with hash -6722204, now seen corresponding path program 1 times [2022-11-25 15:47:31,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:31,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051272167] [2022-11-25 15:47:31,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:31,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:31,691 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:31,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:31,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051272167] [2022-11-25 15:47:31,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051272167] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:47:31,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026306208] [2022-11-25 15:47:31,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:31,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:47:31,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:47:31,693 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:47:31,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 15:47:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:31,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 15:47:31,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:47:32,955 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:32,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:47:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:34,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026306208] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:47:34,372 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:47:34,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-11-25 15:47:34,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037915757] [2022-11-25 15:47:34,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:47:34,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-25 15:47:34,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:34,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-25 15:47:34,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-11-25 15:47:34,374 INFO L87 Difference]: Start difference. First operand 6753 states and 9143 transitions. Second operand has 25 states, 25 states have (on average 9.8) internal successors, (245), 24 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:46,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:47:46,905 INFO L93 Difference]: Finished difference Result 38687 states and 48626 transitions. [2022-11-25 15:47:46,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-25 15:47:46,906 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.8) internal successors, (245), 24 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-11-25 15:47:46,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:47:46,943 INFO L225 Difference]: With dead ends: 38687 [2022-11-25 15:47:46,944 INFO L226 Difference]: Without dead ends: 33669 [2022-11-25 15:47:46,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=823, Invalid=3337, Unknown=0, NotChecked=0, Total=4160 [2022-11-25 15:47:46,954 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 18225 mSDsluCounter, 5581 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18225 SdHoareTripleChecker+Valid, 7146 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 15:47:46,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18225 Valid, 7146 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 15:47:46,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33669 states. [2022-11-25 15:47:52,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33669 to 22550. [2022-11-25 15:47:52,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22550 states, 22548 states have (on average 1.2746141564662055) internal successors, (28740), 22549 states have internal predecessors, (28740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:52,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22550 states to 22550 states and 28740 transitions. [2022-11-25 15:47:52,097 INFO L78 Accepts]: Start accepts. Automaton has 22550 states and 28740 transitions. Word has length 87 [2022-11-25 15:47:52,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:47:52,097 INFO L495 AbstractCegarLoop]: Abstraction has 22550 states and 28740 transitions. [2022-11-25 15:47:52,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.8) internal successors, (245), 24 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:52,097 INFO L276 IsEmpty]: Start isEmpty. Operand 22550 states and 28740 transitions. [2022-11-25 15:47:52,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-25 15:47:52,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:47:52,099 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:47:52,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 15:47:52,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:47:52,306 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:47:52,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:52,307 INFO L85 PathProgramCache]: Analyzing trace with hash -2042803566, now seen corresponding path program 1 times [2022-11-25 15:47:52,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:52,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389277364] [2022-11-25 15:47:52,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:52,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:52,962 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:52,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:52,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389277364] [2022-11-25 15:47:52,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389277364] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:47:52,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312041268] [2022-11-25 15:47:52,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:52,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:47:52,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:47:52,971 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:47:52,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 15:47:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:53,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 15:47:53,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:47:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:53,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:47:54,668 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:54,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312041268] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:47:54,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:47:54,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2022-11-25 15:47:54,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998219834] [2022-11-25 15:47:54,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:47:54,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-25 15:47:54,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:54,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-25 15:47:54,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2022-11-25 15:47:54,672 INFO L87 Difference]: Start difference. First operand 22550 states and 28740 transitions. Second operand has 26 states, 26 states have (on average 8.538461538461538) internal successors, (222), 25 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:12,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:48:12,272 INFO L93 Difference]: Finished difference Result 81917 states and 102694 transitions. [2022-11-25 15:48:12,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 15:48:12,273 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.538461538461538) internal successors, (222), 25 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-11-25 15:48:12,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:48:12,356 INFO L225 Difference]: With dead ends: 81917 [2022-11-25 15:48:12,356 INFO L226 Difference]: Without dead ends: 63437 [2022-11-25 15:48:12,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=341, Invalid=1141, Unknown=0, NotChecked=0, Total=1482 [2022-11-25 15:48:12,372 INFO L413 NwaCegarLoop]: 1526 mSDtfsCounter, 15746 mSDsluCounter, 3326 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15746 SdHoareTripleChecker+Valid, 4852 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 [2022-11-25 15:48:12,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15746 Valid, 4852 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 15:48:12,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63437 states. [2022-11-25 15:48:25,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63437 to 43919. [2022-11-25 15:48:25,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43919 states, 43917 states have (on average 1.2504497119566456) internal successors, (54916), 43918 states have internal predecessors, (54916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:25,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43919 states to 43919 states and 54916 transitions. [2022-11-25 15:48:25,183 INFO L78 Accepts]: Start accepts. Automaton has 43919 states and 54916 transitions. Word has length 88 [2022-11-25 15:48:25,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:48:25,184 INFO L495 AbstractCegarLoop]: Abstraction has 43919 states and 54916 transitions. [2022-11-25 15:48:25,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.538461538461538) internal successors, (222), 25 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:25,184 INFO L276 IsEmpty]: Start isEmpty. Operand 43919 states and 54916 transitions. [2022-11-25 15:48:25,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-25 15:48:25,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:48:25,187 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:48:25,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 15:48:25,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:48:25,393 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:48:25,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:48:25,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1659093216, now seen corresponding path program 1 times [2022-11-25 15:48:25,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:48:25,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072934794] [2022-11-25 15:48:25,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:48:25,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:48:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:48:25,986 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:48:25,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:48:25,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072934794] [2022-11-25 15:48:25,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072934794] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:48:25,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716233959] [2022-11-25 15:48:25,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:48:25,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:48:25,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:48:25,988 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:48:25,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3344b2f1-1a8f-47ec-a246-4e513f372bcd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 15:48:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:48:26,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-25 15:48:26,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:48:36,972 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:48:36,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:48:46,223 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:48:46,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716233959] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:48:46,223 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:48:46,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 20, 22] total 48 [2022-11-25 15:48:46,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055993826] [2022-11-25 15:48:46,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:48:46,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-25 15:48:46,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:48:46,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-25 15:48:46,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1979, Unknown=0, NotChecked=0, Total=2256 [2022-11-25 15:48:46,226 INFO L87 Difference]: Start difference. First operand 43919 states and 54916 transitions. Second operand has 48 states, 48 states have (on average 5.0) internal successors, (240), 48 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)