./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9dfc1a-c13c-4c8a-889f-6e7f393637b2/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9dfc1a-c13c-4c8a-889f-6e7f393637b2/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9dfc1a-c13c-4c8a-889f-6e7f393637b2/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9dfc1a-c13c-4c8a-889f-6e7f393637b2/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9dfc1a-c13c-4c8a-889f-6e7f393637b2/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9dfc1a-c13c-4c8a-889f-6e7f393637b2/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 16e0086acf2f158eb0b3309fc7ab7b15830d1af8d2ef9923a4f4e2311d9d7a3f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 21:13:44,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:13:44,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:13:44,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:13:44,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:13:44,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:13:44,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:13:44,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:13:44,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:13:44,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:13:44,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:13:44,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:13:44,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:13:44,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:13:44,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:13:44,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:13:44,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:13:44,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:13:44,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:13:44,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:13:44,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:13:44,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:13:44,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:13:44,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:13:44,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:13:44,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:13:44,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:13:44,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:13:44,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:13:44,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:13:44,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:13:44,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:13:44,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:13:44,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:13:44,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:13:44,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:13:44,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:13:44,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:13:44,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:13:44,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:13:44,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:13:44,733 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9dfc1a-c13c-4c8a-889f-6e7f393637b2/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 21:13:44,753 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:13:44,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:13:44,753 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:13:44,754 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:13:44,754 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:13:44,754 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:13:44,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:13:44,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:13:44,761 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:13:44,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:13:44,762 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:13:44,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:13:44,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:13:44,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:13:44,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:13:44,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:13:44,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:13:44,763 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:13:44,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:13:44,764 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:13:44,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:13:44,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:13:44,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:13:44,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:13:44,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:13:44,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:13:44,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:13:44,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:13:44,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:13:44,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:13:44,766 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:13:44,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:13:44,766 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:13:44,766 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:13:44,766 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:13:44,767 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_7b9dfc1a-c13c-4c8a-889f-6e7f393637b2/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9dfc1a-c13c-4c8a-889f-6e7f393637b2/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16e0086acf2f158eb0b3309fc7ab7b15830d1af8d2ef9923a4f4e2311d9d7a3f [2022-12-13 21:13:44,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:13:44,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:13:44,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:13:44,988 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:13:44,988 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:13:44,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9dfc1a-c13c-4c8a-889f-6e7f393637b2/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.ufo.UNBOUNDED.pals.c [2022-12-13 21:13:47,529 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:13:47,742 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:13:47,743 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9dfc1a-c13c-4c8a-889f-6e7f393637b2/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.ufo.UNBOUNDED.pals.c [2022-12-13 21:13:47,758 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9dfc1a-c13c-4c8a-889f-6e7f393637b2/bin/uautomizer-uyxdKDjOR8/data/bed77699c/47df1e17bfff48fcb454c52a51c936f7/FLAG41c3574d9 [2022-12-13 21:13:48,122 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9dfc1a-c13c-4c8a-889f-6e7f393637b2/bin/uautomizer-uyxdKDjOR8/data/bed77699c/47df1e17bfff48fcb454c52a51c936f7 [2022-12-13 21:13:48,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:13:48,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:13:48,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:13:48,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:13:48,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:13:48,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:13:48" (1/1) ... [2022-12-13 21:13:48,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54dbcf7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:48, skipping insertion in model container [2022-12-13 21:13:48,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:13:48" (1/1) ... [2022-12-13 21:13:48,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:13:48,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:13:48,501 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_7b9dfc1a-c13c-4c8a-889f-6e7f393637b2/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.ufo.UNBOUNDED.pals.c[65677,65690] [2022-12-13 21:13:48,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:13:48,514 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:13:48,594 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_7b9dfc1a-c13c-4c8a-889f-6e7f393637b2/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.ufo.UNBOUNDED.pals.c[65677,65690] [2022-12-13 21:13:48,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:13:48,606 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:13:48,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:48 WrapperNode [2022-12-13 21:13:48,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:13:48,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:13:48,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:13:48,608 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:13:48,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:48" (1/1) ... [2022-12-13 21:13:48,627 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:48" (1/1) ... [2022-12-13 21:13:48,673 INFO L138 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 2053 [2022-12-13 21:13:48,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:13:48,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:13:48,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:13:48,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:13:48,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:48" (1/1) ... [2022-12-13 21:13:48,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:48" (1/1) ... [2022-12-13 21:13:48,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:48" (1/1) ... [2022-12-13 21:13:48,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:48" (1/1) ... [2022-12-13 21:13:48,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:48" (1/1) ... [2022-12-13 21:13:48,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:48" (1/1) ... [2022-12-13 21:13:48,746 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:48" (1/1) ... [2022-12-13 21:13:48,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:48" (1/1) ... [2022-12-13 21:13:48,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:13:48,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:13:48,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:13:48,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:13:48,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:48" (1/1) ... [2022-12-13 21:13:48,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:13:48,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9dfc1a-c13c-4c8a-889f-6e7f393637b2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:13:48,785 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9dfc1a-c13c-4c8a-889f-6e7f393637b2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:13:48,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9dfc1a-c13c-4c8a-889f-6e7f393637b2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:13:48,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:13:48,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:13:48,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:13:48,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:13:48,943 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:13:48,945 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:13:50,087 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:13:50,097 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:13:50,097 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 21:13:50,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:13:50 BoogieIcfgContainer [2022-12-13 21:13:50,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:13:50,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:13:50,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:13:50,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:13:50,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:13:48" (1/3) ... [2022-12-13 21:13:50,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7233115d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:13:50, skipping insertion in model container [2022-12-13 21:13:50,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:48" (2/3) ... [2022-12-13 21:13:50,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7233115d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:13:50, skipping insertion in model container [2022-12-13 21:13:50,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:13:50" (3/3) ... [2022-12-13 21:13:50,106 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.ufo.UNBOUNDED.pals.c [2022-12-13 21:13:50,119 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:13:50,119 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 21:13:50,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:13:50,190 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;@3fcab809, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:13:50,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 21:13:50,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 706 states, 704 states have (on average 1.8650568181818181) internal successors, (1313), 705 states have internal predecessors, (1313), 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) [2022-12-13 21:13:50,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-12-13 21:13:50,214 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:50,215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:50,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:13:50,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:50,221 INFO L85 PathProgramCache]: Analyzing trace with hash 2045169392, now seen corresponding path program 1 times [2022-12-13 21:13:50,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:13:50,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138646986] [2022-12-13 21:13:50,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:50,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:13:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:50,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:50,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:13:50,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138646986] [2022-12-13 21:13:50,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138646986] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:50,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:50,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:13:50,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044131974] [2022-12-13 21:13:50,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:50,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:13:50,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:13:50,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:13:50,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:13:50,624 INFO L87 Difference]: Start difference. First operand has 706 states, 704 states have (on average 1.8650568181818181) internal successors, (1313), 705 states have internal predecessors, (1313), 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 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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) [2022-12-13 21:13:50,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:50,689 INFO L93 Difference]: Finished difference Result 858 states and 1587 transitions. [2022-12-13 21:13:50,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:13:50,691 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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 153 [2022-12-13 21:13:50,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:50,708 INFO L225 Difference]: With dead ends: 858 [2022-12-13 21:13:50,708 INFO L226 Difference]: Without dead ends: 702 [2022-12-13 21:13:50,711 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 [2022-12-13 21:13:50,714 INFO L413 NwaCegarLoop]: 1306 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, 1306 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 [2022-12-13 21:13:50,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:13:50,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-12-13 21:13:50,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 702. [2022-12-13 21:13:50,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 1.8630527817403708) internal successors, (1306), 701 states have internal predecessors, (1306), 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) [2022-12-13 21:13:50,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1306 transitions. [2022-12-13 21:13:50,785 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1306 transitions. Word has length 153 [2022-12-13 21:13:50,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:50,786 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1306 transitions. [2022-12-13 21:13:50,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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) [2022-12-13 21:13:50,787 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1306 transitions. [2022-12-13 21:13:50,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-12-13 21:13:50,791 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:50,792 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:50,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:13:50,792 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:13:50,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:50,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1535696302, now seen corresponding path program 1 times [2022-12-13 21:13:50,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:13:50,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981796628] [2022-12-13 21:13:50,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:50,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:13:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:51,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:51,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:13:51,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981796628] [2022-12-13 21:13:51,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981796628] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:51,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:51,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:13:51,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811671438] [2022-12-13 21:13:51,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:51,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:13:51,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:13:51,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:13:51,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:13:51,165 INFO L87 Difference]: Start difference. First operand 702 states and 1306 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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) [2022-12-13 21:13:51,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:51,298 INFO L93 Difference]: Finished difference Result 857 states and 1580 transitions. [2022-12-13 21:13:51,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:13:51,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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 153 [2022-12-13 21:13:51,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:51,304 INFO L225 Difference]: With dead ends: 857 [2022-12-13 21:13:51,304 INFO L226 Difference]: Without dead ends: 702 [2022-12-13 21:13:51,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:13:51,306 INFO L413 NwaCegarLoop]: 1304 mSDtfsCounter, 3 mSDsluCounter, 3844 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5148 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:51,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 5148 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:13:51,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-12-13 21:13:51,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 702. [2022-12-13 21:13:51,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 1.7703281027104136) internal successors, (1241), 701 states have internal predecessors, (1241), 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) [2022-12-13 21:13:51,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1241 transitions. [2022-12-13 21:13:51,332 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1241 transitions. Word has length 153 [2022-12-13 21:13:51,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:51,333 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1241 transitions. [2022-12-13 21:13:51,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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) [2022-12-13 21:13:51,333 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1241 transitions. [2022-12-13 21:13:51,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-12-13 21:13:51,337 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:51,338 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:51,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:13:51,338 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:13:51,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:51,339 INFO L85 PathProgramCache]: Analyzing trace with hash -263515124, now seen corresponding path program 1 times [2022-12-13 21:13:51,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:13:51,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96356002] [2022-12-13 21:13:51,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:51,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:13:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:51,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:13:51,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96356002] [2022-12-13 21:13:51,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96356002] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:51,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:51,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:13:51,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030348488] [2022-12-13 21:13:51,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:51,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:13:51,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:13:51,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:13:51,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:13:51,539 INFO L87 Difference]: Start difference. First operand 702 states and 1241 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2022-12-13 21:13:51,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:51,585 INFO L93 Difference]: Finished difference Result 990 states and 1755 transitions. [2022-12-13 21:13:51,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:13:51,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 217 [2022-12-13 21:13:51,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:51,589 INFO L225 Difference]: With dead ends: 990 [2022-12-13 21:13:51,589 INFO L226 Difference]: Without dead ends: 839 [2022-12-13 21:13:51,589 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 [2022-12-13 21:13:51,591 INFO L413 NwaCegarLoop]: 1234 mSDtfsCounter, 235 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:51,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 2404 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:13:51,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2022-12-13 21:13:51,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 836. [2022-12-13 21:13:51,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 1.768862275449102) internal successors, (1477), 835 states have internal predecessors, (1477), 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) [2022-12-13 21:13:51,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1477 transitions. [2022-12-13 21:13:51,610 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1477 transitions. Word has length 217 [2022-12-13 21:13:51,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:51,611 INFO L495 AbstractCegarLoop]: Abstraction has 836 states and 1477 transitions. [2022-12-13 21:13:51,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2022-12-13 21:13:51,611 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1477 transitions. [2022-12-13 21:13:51,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-12-13 21:13:51,614 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:51,614 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:51,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 21:13:51,614 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:13:51,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:51,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1892143962, now seen corresponding path program 1 times [2022-12-13 21:13:51,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:13:51,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980378769] [2022-12-13 21:13:51,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:51,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:13:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:51,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:51,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:13:51,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980378769] [2022-12-13 21:13:51,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980378769] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:51,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:51,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:13:51,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788961207] [2022-12-13 21:13:51,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:51,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:13:51,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:13:51,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:13:51,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:13:51,777 INFO L87 Difference]: Start difference. First operand 836 states and 1477 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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) [2022-12-13 21:13:51,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:51,817 INFO L93 Difference]: Finished difference Result 1382 states and 2445 transitions. [2022-12-13 21:13:51,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:13:51,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 221 [2022-12-13 21:13:51,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:51,821 INFO L225 Difference]: With dead ends: 1382 [2022-12-13 21:13:51,821 INFO L226 Difference]: Without dead ends: 1097 [2022-12-13 21:13:51,822 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 [2022-12-13 21:13:51,823 INFO L413 NwaCegarLoop]: 1238 mSDtfsCounter, 235 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:51,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 2417 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:13:51,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2022-12-13 21:13:51,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1093. [2022-12-13 21:13:51,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 1.7692307692307692) internal successors, (1932), 1092 states have internal predecessors, (1932), 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) [2022-12-13 21:13:51,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1932 transitions. [2022-12-13 21:13:51,852 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1932 transitions. Word has length 221 [2022-12-13 21:13:51,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:51,852 INFO L495 AbstractCegarLoop]: Abstraction has 1093 states and 1932 transitions. [2022-12-13 21:13:51,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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) [2022-12-13 21:13:51,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1932 transitions. [2022-12-13 21:13:51,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-12-13 21:13:51,855 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:51,855 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:51,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 21:13:51,855 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:13:51,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:51,856 INFO L85 PathProgramCache]: Analyzing trace with hash 104525888, now seen corresponding path program 1 times [2022-12-13 21:13:51,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:13:51,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526857987] [2022-12-13 21:13:51,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:51,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:13:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:52,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:52,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:13:52,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526857987] [2022-12-13 21:13:52,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526857987] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:52,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:52,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:13:52,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146362141] [2022-12-13 21:13:52,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:52,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:13:52,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:13:52,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:13:52,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:13:52,065 INFO L87 Difference]: Start difference. First operand 1093 states and 1932 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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) [2022-12-13 21:13:52,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:52,107 INFO L93 Difference]: Finished difference Result 2129 states and 3766 transitions. [2022-12-13 21:13:52,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:13:52,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 225 [2022-12-13 21:13:52,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:52,111 INFO L225 Difference]: With dead ends: 2129 [2022-12-13 21:13:52,111 INFO L226 Difference]: Without dead ends: 1587 [2022-12-13 21:13:52,112 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 [2022-12-13 21:13:52,113 INFO L413 NwaCegarLoop]: 1238 mSDtfsCounter, 227 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 2418 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:52,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 2418 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:13:52,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2022-12-13 21:13:52,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1581. [2022-12-13 21:13:52,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1580 states have (on average 1.7670886075949368) internal successors, (2792), 1580 states have internal predecessors, (2792), 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) [2022-12-13 21:13:52,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2792 transitions. [2022-12-13 21:13:52,148 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2792 transitions. Word has length 225 [2022-12-13 21:13:52,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:52,149 INFO L495 AbstractCegarLoop]: Abstraction has 1581 states and 2792 transitions. [2022-12-13 21:13:52,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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) [2022-12-13 21:13:52,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2792 transitions. [2022-12-13 21:13:52,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-12-13 21:13:52,153 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:52,153 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:52,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 21:13:52,154 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:13:52,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:52,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1651908902, now seen corresponding path program 1 times [2022-12-13 21:13:52,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:13:52,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889715146] [2022-12-13 21:13:52,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:52,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:13:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:52,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:52,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:13:52,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889715146] [2022-12-13 21:13:52,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889715146] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:52,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:52,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:13:52,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841962468] [2022-12-13 21:13:52,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:52,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:13:52,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:13:52,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:13:52,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:13:52,321 INFO L87 Difference]: Start difference. First operand 1581 states and 2792 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2022-12-13 21:13:52,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:52,374 INFO L93 Difference]: Finished difference Result 3545 states and 6258 transitions. [2022-12-13 21:13:52,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:13:52,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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 229 [2022-12-13 21:13:52,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:52,380 INFO L225 Difference]: With dead ends: 3545 [2022-12-13 21:13:52,380 INFO L226 Difference]: Without dead ends: 2515 [2022-12-13 21:13:52,381 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 [2022-12-13 21:13:52,382 INFO L413 NwaCegarLoop]: 1238 mSDtfsCounter, 219 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 2419 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:52,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 2419 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:13:52,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2022-12-13 21:13:52,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2505. [2022-12-13 21:13:52,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2504 states have (on average 1.7619808306709266) internal successors, (4412), 2504 states have internal predecessors, (4412), 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) [2022-12-13 21:13:52,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4412 transitions. [2022-12-13 21:13:52,436 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4412 transitions. Word has length 229 [2022-12-13 21:13:52,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:52,436 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 4412 transitions. [2022-12-13 21:13:52,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2022-12-13 21:13:52,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4412 transitions. [2022-12-13 21:13:52,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-12-13 21:13:52,439 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:52,439 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:52,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 21:13:52,440 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:13:52,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:52,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1071941516, now seen corresponding path program 1 times [2022-12-13 21:13:52,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:13:52,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747932461] [2022-12-13 21:13:52,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:52,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:13:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:52,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:52,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:13:52,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747932461] [2022-12-13 21:13:52,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747932461] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:52,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:52,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:13:52,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597435022] [2022-12-13 21:13:52,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:52,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:13:52,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:13:52,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:13:52,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:13:52,619 INFO L87 Difference]: Start difference. First operand 2505 states and 4412 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2022-12-13 21:13:52,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:52,744 INFO L93 Difference]: Finished difference Result 6221 states and 10942 transitions. [2022-12-13 21:13:52,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:13:52,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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 233 [2022-12-13 21:13:52,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:52,759 INFO L225 Difference]: With dead ends: 6221 [2022-12-13 21:13:52,759 INFO L226 Difference]: Without dead ends: 4267 [2022-12-13 21:13:52,762 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 [2022-12-13 21:13:52,763 INFO L413 NwaCegarLoop]: 1238 mSDtfsCounter, 211 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:52,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 2420 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:13:52,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2022-12-13 21:13:52,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 4249. [2022-12-13 21:13:52,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4249 states, 4248 states have (on average 1.7542372881355932) internal successors, (7452), 4248 states have internal predecessors, (7452), 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) [2022-12-13 21:13:52,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4249 states to 4249 states and 7452 transitions. [2022-12-13 21:13:52,922 INFO L78 Accepts]: Start accepts. Automaton has 4249 states and 7452 transitions. Word has length 233 [2022-12-13 21:13:52,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:52,923 INFO L495 AbstractCegarLoop]: Abstraction has 4249 states and 7452 transitions. [2022-12-13 21:13:52,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2022-12-13 21:13:52,923 INFO L276 IsEmpty]: Start isEmpty. Operand 4249 states and 7452 transitions. [2022-12-13 21:13:52,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-12-13 21:13:52,928 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:52,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:52,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 21:13:52,928 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:13:52,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:52,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1683604210, now seen corresponding path program 1 times [2022-12-13 21:13:52,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:13:52,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273306410] [2022-12-13 21:13:52,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:52,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:13:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:53,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:53,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:13:53,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273306410] [2022-12-13 21:13:53,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273306410] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:53,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:53,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:13:53,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220651881] [2022-12-13 21:13:53,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:53,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:13:53,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:13:53,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:13:53,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:13:53,229 INFO L87 Difference]: Start difference. First operand 4249 states and 7452 transitions. Second operand has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 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) [2022-12-13 21:13:53,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:53,982 INFO L93 Difference]: Finished difference Result 25437 states and 44870 transitions. [2022-12-13 21:13:53,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 21:13:53,983 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 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 237 [2022-12-13 21:13:53,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:54,025 INFO L225 Difference]: With dead ends: 25437 [2022-12-13 21:13:54,025 INFO L226 Difference]: Without dead ends: 21739 [2022-12-13 21:13:54,032 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 [2022-12-13 21:13:54,032 INFO L413 NwaCegarLoop]: 1247 mSDtfsCounter, 3289 mSDsluCounter, 9584 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3289 SdHoareTripleChecker+Valid, 10831 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:54,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3289 Valid, 10831 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 21:13:54,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21739 states. [2022-12-13 21:13:54,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21739 to 7803. [2022-12-13 21:13:54,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7803 states, 7802 states have (on average 1.7524993591386824) internal successors, (13673), 7802 states have internal predecessors, (13673), 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) [2022-12-13 21:13:54,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7803 states to 7803 states and 13673 transitions. [2022-12-13 21:13:54,367 INFO L78 Accepts]: Start accepts. Automaton has 7803 states and 13673 transitions. Word has length 237 [2022-12-13 21:13:54,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:54,367 INFO L495 AbstractCegarLoop]: Abstraction has 7803 states and 13673 transitions. [2022-12-13 21:13:54,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 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) [2022-12-13 21:13:54,368 INFO L276 IsEmpty]: Start isEmpty. Operand 7803 states and 13673 transitions. [2022-12-13 21:13:54,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-12-13 21:13:54,371 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:54,372 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:54,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 21:13:54,372 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:13:54,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:54,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1376464959, now seen corresponding path program 1 times [2022-12-13 21:13:54,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:13:54,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825911183] [2022-12-13 21:13:54,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:54,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:13:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:54,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:54,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:13:54,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825911183] [2022-12-13 21:13:54,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825911183] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:54,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:54,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:13:54,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392421429] [2022-12-13 21:13:54,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:54,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:13:54,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:13:54,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:13:54,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:13:54,544 INFO L87 Difference]: Start difference. First operand 7803 states and 13673 transitions. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 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) [2022-12-13 21:13:54,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:54,993 INFO L93 Difference]: Finished difference Result 22737 states and 39991 transitions. [2022-12-13 21:13:54,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:13:54,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 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 238 [2022-12-13 21:13:54,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:55,016 INFO L225 Difference]: With dead ends: 22737 [2022-12-13 21:13:55,016 INFO L226 Difference]: Without dead ends: 15485 [2022-12-13 21:13:55,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:13:55,024 INFO L413 NwaCegarLoop]: 1244 mSDtfsCounter, 779 mSDsluCounter, 2667 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 3911 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:55,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 3911 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:13:55,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15485 states. [2022-12-13 21:13:55,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15485 to 11611. [2022-12-13 21:13:55,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11611 states, 11610 states have (on average 1.753316106804479) internal successors, (20356), 11610 states have internal predecessors, (20356), 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) [2022-12-13 21:13:55,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11611 states to 11611 states and 20356 transitions. [2022-12-13 21:13:55,334 INFO L78 Accepts]: Start accepts. Automaton has 11611 states and 20356 transitions. Word has length 238 [2022-12-13 21:13:55,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:55,335 INFO L495 AbstractCegarLoop]: Abstraction has 11611 states and 20356 transitions. [2022-12-13 21:13:55,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 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) [2022-12-13 21:13:55,335 INFO L276 IsEmpty]: Start isEmpty. Operand 11611 states and 20356 transitions. [2022-12-13 21:13:55,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-12-13 21:13:55,339 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:55,339 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:55,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 21:13:55,340 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:13:55,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:55,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1918333029, now seen corresponding path program 1 times [2022-12-13 21:13:55,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:13:55,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746751014] [2022-12-13 21:13:55,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:55,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:13:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:55,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:55,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:13:55,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746751014] [2022-12-13 21:13:55,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746751014] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:55,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:55,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:13:55,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585378214] [2022-12-13 21:13:55,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:55,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:13:55,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:13:55,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:13:55,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:13:55,529 INFO L87 Difference]: Start difference. First operand 11611 states and 20356 transitions. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 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) [2022-12-13 21:13:56,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:56,059 INFO L93 Difference]: Finished difference Result 34131 states and 59931 transitions. [2022-12-13 21:13:56,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:13:56,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 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 239 [2022-12-13 21:13:56,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:56,089 INFO L225 Difference]: With dead ends: 34131 [2022-12-13 21:13:56,090 INFO L226 Difference]: Without dead ends: 23071 [2022-12-13 21:13:56,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:13:56,098 INFO L413 NwaCegarLoop]: 1230 mSDtfsCounter, 779 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 3899 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:56,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 3899 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:13:56,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23071 states. [2022-12-13 21:13:56,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23071 to 17293. [2022-12-13 21:13:56,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17293 states, 17292 states have (on average 1.7502891510525098) internal successors, (30266), 17292 states have internal predecessors, (30266), 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) [2022-12-13 21:13:56,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17293 states to 17293 states and 30266 transitions. [2022-12-13 21:13:56,562 INFO L78 Accepts]: Start accepts. Automaton has 17293 states and 30266 transitions. Word has length 239 [2022-12-13 21:13:56,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:56,563 INFO L495 AbstractCegarLoop]: Abstraction has 17293 states and 30266 transitions. [2022-12-13 21:13:56,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 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) [2022-12-13 21:13:56,563 INFO L276 IsEmpty]: Start isEmpty. Operand 17293 states and 30266 transitions. [2022-12-13 21:13:56,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-12-13 21:13:56,574 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:56,574 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:56,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 21:13:56,574 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:13:56,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:56,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1705378358, now seen corresponding path program 1 times [2022-12-13 21:13:56,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:13:56,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924483999] [2022-12-13 21:13:56,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:56,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:13:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:56,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:56,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:13:56,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924483999] [2022-12-13 21:13:56,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924483999] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:56,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:56,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:13:56,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197406448] [2022-12-13 21:13:56,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:56,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:13:56,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:13:56,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:13:56,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:13:56,805 INFO L87 Difference]: Start difference. First operand 17293 states and 30266 transitions. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 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) [2022-12-13 21:13:57,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:57,537 INFO L93 Difference]: Finished difference Result 51239 states and 89823 transitions. [2022-12-13 21:13:57,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:13:57,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 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) Word has length 240 [2022-12-13 21:13:57,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:57,575 INFO L225 Difference]: With dead ends: 51239 [2022-12-13 21:13:57,575 INFO L226 Difference]: Without dead ends: 34497 [2022-12-13 21:13:57,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:13:57,591 INFO L413 NwaCegarLoop]: 1230 mSDtfsCounter, 777 mSDsluCounter, 2671 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 3901 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:57,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 3901 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:13:57,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34497 states. [2022-12-13 21:13:58,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34497 to 25825. [2022-12-13 21:13:58,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25825 states, 25824 states have (on average 1.747366790582404) internal successors, (45124), 25824 states have internal predecessors, (45124), 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) [2022-12-13 21:13:58,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25825 states to 25825 states and 45124 transitions. [2022-12-13 21:13:58,259 INFO L78 Accepts]: Start accepts. Automaton has 25825 states and 45124 transitions. Word has length 240 [2022-12-13 21:13:58,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:58,260 INFO L495 AbstractCegarLoop]: Abstraction has 25825 states and 45124 transitions. [2022-12-13 21:13:58,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 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) [2022-12-13 21:13:58,260 INFO L276 IsEmpty]: Start isEmpty. Operand 25825 states and 45124 transitions. [2022-12-13 21:13:58,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-12-13 21:13:58,266 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:58,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:58,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 21:13:58,266 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:13:58,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:58,267 INFO L85 PathProgramCache]: Analyzing trace with hash -397706897, now seen corresponding path program 1 times [2022-12-13 21:13:58,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:13:58,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453503775] [2022-12-13 21:13:58,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:58,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:13:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:58,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:58,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:13:58,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453503775] [2022-12-13 21:13:58,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453503775] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:58,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:58,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:13:58,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916972079] [2022-12-13 21:13:58,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:58,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:13:58,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:13:58,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:13:58,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:13:58,347 INFO L87 Difference]: Start difference. First operand 25825 states and 45124 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 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) [2022-12-13 21:13:59,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:59,399 INFO L93 Difference]: Finished difference Result 58012 states and 101594 transitions. [2022-12-13 21:13:59,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:13:59,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 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 241 [2022-12-13 21:13:59,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:59,442 INFO L225 Difference]: With dead ends: 58012 [2022-12-13 21:13:59,443 INFO L226 Difference]: Without dead ends: 40273 [2022-12-13 21:13:59,460 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 [2022-12-13 21:13:59,460 INFO L413 NwaCegarLoop]: 1454 mSDtfsCounter, 242 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:59,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 2657 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:13:59,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40273 states. [2022-12-13 21:14:00,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40273 to 40271. [2022-12-13 21:14:00,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40271 states, 40270 states have (on average 1.7433821703501367) internal successors, (70206), 40270 states have internal predecessors, (70206), 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) [2022-12-13 21:14:00,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40271 states to 40271 states and 70206 transitions. [2022-12-13 21:14:00,458 INFO L78 Accepts]: Start accepts. Automaton has 40271 states and 70206 transitions. Word has length 241 [2022-12-13 21:14:00,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:14:00,458 INFO L495 AbstractCegarLoop]: Abstraction has 40271 states and 70206 transitions. [2022-12-13 21:14:00,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 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) [2022-12-13 21:14:00,459 INFO L276 IsEmpty]: Start isEmpty. Operand 40271 states and 70206 transitions. [2022-12-13 21:14:00,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-12-13 21:14:00,461 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:14:00,461 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:14:00,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 21:14:00,461 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:14:00,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:14:00,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1118226833, now seen corresponding path program 1 times [2022-12-13 21:14:00,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:14:00,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976236603] [2022-12-13 21:14:00,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:14:00,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:14:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:14:00,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:14:00,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:14:00,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976236603] [2022-12-13 21:14:00,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976236603] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:14:00,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:14:00,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:14:00,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075913326] [2022-12-13 21:14:00,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:14:00,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:14:00,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:14:00,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:14:00,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:14:00,545 INFO L87 Difference]: Start difference. First operand 40271 states and 70206 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 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) [2022-12-13 21:14:01,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:14:01,642 INFO L93 Difference]: Finished difference Result 79333 states and 138255 transitions. [2022-12-13 21:14:01,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:14:01,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 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 241 [2022-12-13 21:14:01,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:14:01,744 INFO L225 Difference]: With dead ends: 79333 [2022-12-13 21:14:01,744 INFO L226 Difference]: Without dead ends: 57723 [2022-12-13 21:14:01,756 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 [2022-12-13 21:14:01,757 INFO L413 NwaCegarLoop]: 1353 mSDtfsCounter, 218 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 2559 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:14:01,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 2559 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:14:01,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57723 states. [2022-12-13 21:14:03,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57723 to 57721. [2022-12-13 21:14:03,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57721 states, 57720 states have (on average 1.7362266112266111) internal successors, (100215), 57720 states have internal predecessors, (100215), 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) [2022-12-13 21:14:03,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57721 states to 57721 states and 100215 transitions. [2022-12-13 21:14:03,417 INFO L78 Accepts]: Start accepts. Automaton has 57721 states and 100215 transitions. Word has length 241 [2022-12-13 21:14:03,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:14:03,418 INFO L495 AbstractCegarLoop]: Abstraction has 57721 states and 100215 transitions. [2022-12-13 21:14:03,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 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) [2022-12-13 21:14:03,418 INFO L276 IsEmpty]: Start isEmpty. Operand 57721 states and 100215 transitions. [2022-12-13 21:14:03,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-12-13 21:14:03,421 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:14:03,421 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:14:03,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 21:14:03,421 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:14:03,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:14:03,422 INFO L85 PathProgramCache]: Analyzing trace with hash -429492881, now seen corresponding path program 1 times [2022-12-13 21:14:03,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:14:03,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293152620] [2022-12-13 21:14:03,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:14:03,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:14:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:14:03,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:14:03,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:14:03,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293152620] [2022-12-13 21:14:03,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293152620] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:14:03,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:14:03,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:14:03,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30825437] [2022-12-13 21:14:03,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:14:03,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:14:03,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:14:03,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:14:03,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:14:03,534 INFO L87 Difference]: Start difference. First operand 57721 states and 100215 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 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) [2022-12-13 21:14:05,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:14:05,714 INFO L93 Difference]: Finished difference Result 113059 states and 196285 transitions. [2022-12-13 21:14:05,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:14:05,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 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 241 [2022-12-13 21:14:05,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:14:05,801 INFO L225 Difference]: With dead ends: 113059 [2022-12-13 21:14:05,801 INFO L226 Difference]: Without dead ends: 82227 [2022-12-13 21:14:05,823 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 [2022-12-13 21:14:05,824 INFO L413 NwaCegarLoop]: 1333 mSDtfsCounter, 210 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:14:05,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 2540 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:14:05,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82227 states. [2022-12-13 21:14:07,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82227 to 82225. [2022-12-13 21:14:07,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82225 states, 82224 states have (on average 1.7289964000778362) internal successors, (142165), 82224 states have internal predecessors, (142165), 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) [2022-12-13 21:14:07,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82225 states to 82225 states and 142165 transitions. [2022-12-13 21:14:07,890 INFO L78 Accepts]: Start accepts. Automaton has 82225 states and 142165 transitions. Word has length 241 [2022-12-13 21:14:07,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:14:07,890 INFO L495 AbstractCegarLoop]: Abstraction has 82225 states and 142165 transitions. [2022-12-13 21:14:07,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 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) [2022-12-13 21:14:07,891 INFO L276 IsEmpty]: Start isEmpty. Operand 82225 states and 142165 transitions. [2022-12-13 21:14:07,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-12-13 21:14:07,892 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:14:07,892 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:14:07,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 21:14:07,893 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:14:07,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:14:07,893 INFO L85 PathProgramCache]: Analyzing trace with hash -432244804, now seen corresponding path program 1 times [2022-12-13 21:14:07,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:14:07,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671465197] [2022-12-13 21:14:07,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:14:07,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:14:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:14:07,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:14:07,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:14:07,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671465197] [2022-12-13 21:14:07,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671465197] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:14:07,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:14:07,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:14:07,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841051216] [2022-12-13 21:14:07,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:14:07,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:14:07,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:14:07,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:14:07,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:14:08,000 INFO L87 Difference]: Start difference. First operand 82225 states and 142165 transitions. Second operand has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 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) [2022-12-13 21:14:13,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:14:13,185 INFO L93 Difference]: Finished difference Result 269285 states and 465948 transitions. [2022-12-13 21:14:13,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:14:13,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 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 241 [2022-12-13 21:14:13,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:14:13,474 INFO L225 Difference]: With dead ends: 269285 [2022-12-13 21:14:13,474 INFO L226 Difference]: Without dead ends: 187957 [2022-12-13 21:14:13,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:14:13,539 INFO L413 NwaCegarLoop]: 1230 mSDtfsCounter, 775 mSDsluCounter, 2673 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 3903 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:14:13,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 3903 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:14:13,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187957 states. [2022-12-13 21:14:17,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187957 to 134831. [2022-12-13 21:14:17,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134831 states, 134830 states have (on average 1.7240154268337906) internal successors, (232449), 134830 states have internal predecessors, (232449), 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) [2022-12-13 21:14:17,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134831 states to 134831 states and 232449 transitions. [2022-12-13 21:14:17,477 INFO L78 Accepts]: Start accepts. Automaton has 134831 states and 232449 transitions. Word has length 241 [2022-12-13 21:14:17,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:14:17,477 INFO L495 AbstractCegarLoop]: Abstraction has 134831 states and 232449 transitions. [2022-12-13 21:14:17,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 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) [2022-12-13 21:14:17,477 INFO L276 IsEmpty]: Start isEmpty. Operand 134831 states and 232449 transitions. [2022-12-13 21:14:17,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-12-13 21:14:17,479 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:14:17,479 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:14:17,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 21:14:17,479 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:14:17,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:14:17,480 INFO L85 PathProgramCache]: Analyzing trace with hash 435877743, now seen corresponding path program 1 times [2022-12-13 21:14:17,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:14:17,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844796538] [2022-12-13 21:14:17,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:14:17,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:14:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:14:17,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:14:17,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:14:17,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844796538] [2022-12-13 21:14:17,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844796538] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:14:17,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:14:17,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:14:17,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903969313] [2022-12-13 21:14:17,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:14:17,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:14:17,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:14:17,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:14:17,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:14:17,567 INFO L87 Difference]: Start difference. First operand 134831 states and 232449 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 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) [2022-12-13 21:14:22,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:14:22,774 INFO L93 Difference]: Finished difference Result 301095 states and 518609 transitions. [2022-12-13 21:14:22,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:14:22,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 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 241 [2022-12-13 21:14:22,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:14:23,062 INFO L225 Difference]: With dead ends: 301095 [2022-12-13 21:14:23,062 INFO L226 Difference]: Without dead ends: 207393 [2022-12-13 21:14:23,120 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 [2022-12-13 21:14:23,120 INFO L413 NwaCegarLoop]: 1397 mSDtfsCounter, 226 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 2602 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:14:23,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 2602 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:14:23,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207393 states. [2022-12-13 21:14:29,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207393 to 207391. [2022-12-13 21:14:29,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207391 states, 207390 states have (on average 1.7134288056319011) internal successors, (355348), 207390 states have internal predecessors, (355348), 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) [2022-12-13 21:14:29,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207391 states to 207391 states and 355348 transitions. [2022-12-13 21:14:29,888 INFO L78 Accepts]: Start accepts. Automaton has 207391 states and 355348 transitions. Word has length 241 [2022-12-13 21:14:29,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:14:29,888 INFO L495 AbstractCegarLoop]: Abstraction has 207391 states and 355348 transitions. [2022-12-13 21:14:29,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 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) [2022-12-13 21:14:29,888 INFO L276 IsEmpty]: Start isEmpty. Operand 207391 states and 355348 transitions. [2022-12-13 21:14:29,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-12-13 21:14:29,890 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:14:29,890 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:14:29,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 21:14:29,890 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:14:29,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:14:29,891 INFO L85 PathProgramCache]: Analyzing trace with hash -582240145, now seen corresponding path program 1 times [2022-12-13 21:14:29,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:14:29,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251671612] [2022-12-13 21:14:29,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:14:29,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:14:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:14:29,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:14:29,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:14:29,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251671612] [2022-12-13 21:14:29,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251671612] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:14:29,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:14:29,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:14:29,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853859088] [2022-12-13 21:14:29,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:14:29,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:14:29,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:14:29,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:14:29,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:14:29,982 INFO L87 Difference]: Start difference. First operand 207391 states and 355348 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 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) [2022-12-13 21:14:38,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:14:38,559 INFO L93 Difference]: Finished difference Result 462136 states and 790754 transitions. [2022-12-13 21:14:38,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:14:38,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 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 241 [2022-12-13 21:14:38,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:14:39,013 INFO L225 Difference]: With dead ends: 462136 [2022-12-13 21:14:39,013 INFO L226 Difference]: Without dead ends: 317355 [2022-12-13 21:14:39,106 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 [2022-12-13 21:14:39,107 INFO L413 NwaCegarLoop]: 1442 mSDtfsCounter, 234 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:14:39,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 2646 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:14:39,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317355 states. [2022-12-13 21:14:49,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317355 to 317353. [2022-12-13 21:14:49,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317353 states, 317352 states have (on average 1.7007644508306234) internal successors, (539741), 317352 states have internal predecessors, (539741), 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) [2022-12-13 21:14:49,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317353 states to 317353 states and 539741 transitions. [2022-12-13 21:14:49,734 INFO L78 Accepts]: Start accepts. Automaton has 317353 states and 539741 transitions. Word has length 241 [2022-12-13 21:14:49,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:14:49,734 INFO L495 AbstractCegarLoop]: Abstraction has 317353 states and 539741 transitions. [2022-12-13 21:14:49,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 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) [2022-12-13 21:14:49,735 INFO L276 IsEmpty]: Start isEmpty. Operand 317353 states and 539741 transitions. [2022-12-13 21:14:49,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-12-13 21:14:49,736 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:14:49,736 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:14:49,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 21:14:49,736 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:14:49,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:14:49,737 INFO L85 PathProgramCache]: Analyzing trace with hash -2105049043, now seen corresponding path program 1 times [2022-12-13 21:14:49,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:14:49,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266338316] [2022-12-13 21:14:49,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:14:49,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:14:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:14:49,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:14:49,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:14:49,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266338316] [2022-12-13 21:14:49,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266338316] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:14:49,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:14:49,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:14:49,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318840289] [2022-12-13 21:14:49,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:14:49,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:14:49,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:14:49,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:14:49,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:14:49,847 INFO L87 Difference]: Start difference. First operand 317353 states and 539741 transitions. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 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) [2022-12-13 21:15:10,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:15:10,437 INFO L93 Difference]: Finished difference Result 1039785 states and 1769869 transitions. [2022-12-13 21:15:10,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:15:10,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 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 242 [2022-12-13 21:15:10,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:15:11,735 INFO L225 Difference]: With dead ends: 1039785 [2022-12-13 21:15:11,735 INFO L226 Difference]: Without dead ends: 723033 [2022-12-13 21:15:11,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:15:11,918 INFO L413 NwaCegarLoop]: 1230 mSDtfsCounter, 773 mSDsluCounter, 2675 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 3905 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:15:11,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 3905 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:15:12,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723033 states. [2022-12-13 21:15:30,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723033 to 519022. [2022-12-13 21:15:30,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519022 states, 519021 states have (on average 1.6947580155716242) internal successors, (879615), 519021 states have internal predecessors, (879615), 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) [2022-12-13 21:15:31,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519022 states to 519022 states and 879615 transitions. [2022-12-13 21:15:31,775 INFO L78 Accepts]: Start accepts. Automaton has 519022 states and 879615 transitions. Word has length 242 [2022-12-13 21:15:31,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:15:31,775 INFO L495 AbstractCegarLoop]: Abstraction has 519022 states and 879615 transitions. [2022-12-13 21:15:31,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 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) [2022-12-13 21:15:31,775 INFO L276 IsEmpty]: Start isEmpty. Operand 519022 states and 879615 transitions. [2022-12-13 21:15:31,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-12-13 21:15:31,777 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:15:31,777 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:15:31,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 21:15:31,777 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:15:31,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:15:31,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1967694309, now seen corresponding path program 1 times [2022-12-13 21:15:31,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:15:31,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697410352] [2022-12-13 21:15:31,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:15:31,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:15:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:15:32,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:15:32,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:15:32,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697410352] [2022-12-13 21:15:32,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697410352] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:15:32,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:15:32,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:15:32,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236362266] [2022-12-13 21:15:32,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:15:32,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:15:32,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:15:32,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:15:32,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:15:32,178 INFO L87 Difference]: Start difference. First operand 519022 states and 879615 transitions. Second operand has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 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) [2022-12-13 21:15:50,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:15:50,014 INFO L93 Difference]: Finished difference Result 1037445 states and 1758178 transitions. [2022-12-13 21:15:50,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:15:50,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 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 244 [2022-12-13 21:15:50,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:15:50,968 INFO L225 Difference]: With dead ends: 1037445 [2022-12-13 21:15:50,968 INFO L226 Difference]: Without dead ends: 519024 [2022-12-13 21:15:51,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:15:51,160 INFO L413 NwaCegarLoop]: 1239 mSDtfsCounter, 434 mSDsluCounter, 4776 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 6015 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:15:51,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 6015 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:15:51,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519024 states. [2022-12-13 21:16:08,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519024 to 519022. [2022-12-13 21:16:09,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519022 states, 519021 states have (on average 1.6887370645889088) internal successors, (876490), 519021 states have internal predecessors, (876490), 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) [2022-12-13 21:16:10,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519022 states to 519022 states and 876490 transitions. [2022-12-13 21:16:10,289 INFO L78 Accepts]: Start accepts. Automaton has 519022 states and 876490 transitions. Word has length 244 [2022-12-13 21:16:10,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:16:10,289 INFO L495 AbstractCegarLoop]: Abstraction has 519022 states and 876490 transitions. [2022-12-13 21:16:10,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 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) [2022-12-13 21:16:10,289 INFO L276 IsEmpty]: Start isEmpty. Operand 519022 states and 876490 transitions. [2022-12-13 21:16:10,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-12-13 21:16:10,290 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:16:10,290 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:16:10,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 21:16:10,291 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:16:10,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:16:10,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1928836321, now seen corresponding path program 1 times [2022-12-13 21:16:10,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:16:10,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198767558] [2022-12-13 21:16:10,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:10,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:16:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:16:10,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:16:10,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:16:10,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198767558] [2022-12-13 21:16:10,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198767558] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:16:10,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:16:10,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:16:10,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751480983] [2022-12-13 21:16:10,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:16:10,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:16:10,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:16:10,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:16:10,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:16:10,573 INFO L87 Difference]: Start difference. First operand 519022 states and 876490 transitions. Second operand has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 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) [2022-12-13 21:16:45,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:16:45,454 INFO L93 Difference]: Finished difference Result 1534665 states and 2593124 transitions. [2022-12-13 21:16:45,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:16:45,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 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 247 [2022-12-13 21:16:45,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:16:47,183 INFO L225 Difference]: With dead ends: 1534665 [2022-12-13 21:16:47,183 INFO L226 Difference]: Without dead ends: 1016244 [2022-12-13 21:16:47,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:16:47,568 INFO L413 NwaCegarLoop]: 1225 mSDtfsCounter, 218 mSDsluCounter, 6005 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 7230 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:16:47,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 7230 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:16:48,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016244 states. [2022-12-13 21:17:28,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016244 to 1016242. [2022-12-13 21:17:29,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016242 states, 1016241 states have (on average 1.6800985199376919) internal successors, (1707385), 1016241 states have internal predecessors, (1707385), 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) [2022-12-13 21:17:31,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016242 states to 1016242 states and 1707385 transitions. [2022-12-13 21:17:31,296 INFO L78 Accepts]: Start accepts. Automaton has 1016242 states and 1707385 transitions. Word has length 247 [2022-12-13 21:17:31,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:17:31,296 INFO L495 AbstractCegarLoop]: Abstraction has 1016242 states and 1707385 transitions. [2022-12-13 21:17:31,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 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) [2022-12-13 21:17:31,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1016242 states and 1707385 transitions. [2022-12-13 21:17:31,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-12-13 21:17:31,297 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:17:31,298 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:17:31,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 21:17:31,298 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:17:31,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:17:31,298 INFO L85 PathProgramCache]: Analyzing trace with hash -98497522, now seen corresponding path program 1 times [2022-12-13 21:17:31,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:17:31,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824943710] [2022-12-13 21:17:31,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:17:31,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:17:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:17:31,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:17:31,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:17:31,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824943710] [2022-12-13 21:17:31,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824943710] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:17:31,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:17:31,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 21:17:31,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656646851] [2022-12-13 21:17:31,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:17:31,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:17:31,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:17:31,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:17:31,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:17:31,792 INFO L87 Difference]: Start difference. First operand 1016242 states and 1707385 transitions. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 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) [2022-12-13 21:18:52,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:18:52,228 INFO L93 Difference]: Finished difference Result 1962645 states and 3270018 transitions. [2022-12-13 21:18:52,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 21:18:52,229 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 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 248 [2022-12-13 21:18:52,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:18:55,825 INFO L225 Difference]: With dead ends: 1962645 [2022-12-13 21:18:55,825 INFO L226 Difference]: Without dead ends: 1962643 [2022-12-13 21:18:56,082 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 [2022-12-13 21:18:56,083 INFO L413 NwaCegarLoop]: 1360 mSDtfsCounter, 2004 mSDsluCounter, 6614 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2004 SdHoareTripleChecker+Valid, 7974 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:18:56,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2004 Valid, 7974 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:18:57,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962643 states. [2022-12-13 21:19:53,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962643 to 1046416. [2022-12-13 21:19:54,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046416 states, 1046415 states have (on average 1.660410066751719) internal successors, (1737478), 1046415 states have internal predecessors, (1737478), 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) [2022-12-13 21:19:56,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046416 states to 1046416 states and 1737478 transitions. [2022-12-13 21:19:56,575 INFO L78 Accepts]: Start accepts. Automaton has 1046416 states and 1737478 transitions. Word has length 248 [2022-12-13 21:19:56,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:19:56,575 INFO L495 AbstractCegarLoop]: Abstraction has 1046416 states and 1737478 transitions. [2022-12-13 21:19:56,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 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) [2022-12-13 21:19:56,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1046416 states and 1737478 transitions. [2022-12-13 21:19:56,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-12-13 21:19:56,582 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:19:56,582 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:19:56,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 21:19:56,583 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:19:56,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:19:56,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1673852099, now seen corresponding path program 1 times [2022-12-13 21:19:56,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:19:56,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376515804] [2022-12-13 21:19:56,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:19:56,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:19:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:19:56,774 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:19:56,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:19:56,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376515804] [2022-12-13 21:19:56,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376515804] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:19:56,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:19:56,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:19:56,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11368524] [2022-12-13 21:19:56,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:19:56,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:19:56,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:19:56,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:19:56,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:19:56,776 INFO L87 Difference]: Start difference. First operand 1046416 states and 1737478 transitions. Second operand has 7 states, 7 states have (on average 42.42857142857143) internal successors, (297), 7 states have internal predecessors, (297), 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) [2022-12-13 21:22:14,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:22:14,373 INFO L93 Difference]: Finished difference Result 3222812 states and 5364010 transitions. [2022-12-13 21:22:14,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:22:14,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 42.42857142857143) internal successors, (297), 7 states have internal predecessors, (297), 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 298 [2022-12-13 21:22:14,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:22:19,465 INFO L225 Difference]: With dead ends: 3222812 [2022-12-13 21:22:19,465 INFO L226 Difference]: Without dead ends: 2770810 [2022-12-13 21:22:20,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:22:20,006 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 2334 mSDsluCounter, 6520 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2334 SdHoareTripleChecker+Valid, 8013 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:22:20,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2334 Valid, 8013 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 21:22:22,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770810 states.