./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.11.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a191673-71e5-4c73-aefe-face9bcfad65/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a191673-71e5-4c73-aefe-face9bcfad65/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a191673-71e5-4c73-aefe-face9bcfad65/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a191673-71e5-4c73-aefe-face9bcfad65/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.11.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a191673-71e5-4c73-aefe-face9bcfad65/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a191673-71e5-4c73-aefe-face9bcfad65/bin/uautomizer-w2VwFs6gM0 --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 ae9f818c1f032966d67b2bd4627e73bc680f5fe59ca24bfc7cff4e83563ff8e3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:35:02,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:35:02,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:35:02,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:35:02,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:35:02,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:35:02,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:35:02,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:35:02,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:35:02,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:35:02,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:35:02,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:35:02,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:35:02,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:35:02,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:35:02,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:35:02,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:35:02,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:35:02,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:35:02,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:35:02,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:35:02,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:35:02,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:35:02,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:35:02,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:35:02,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:35:02,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:35:02,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:35:02,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:35:02,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:35:02,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:35:02,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:35:02,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:35:02,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:35:02,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:35:02,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:35:02,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:35:02,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:35:02,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:35:02,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:35:02,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:35:02,916 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a191673-71e5-4c73-aefe-face9bcfad65/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:35:02,942 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:35:02,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:35:02,943 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:35:02,943 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:35:02,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:35:02,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:35:02,945 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:35:02,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:35:02,946 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:35:02,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:35:02,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:35:02,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:35:02,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:35:02,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:35:02,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:35:02,947 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:35:02,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:35:02,948 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:35:02,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:35:02,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:35:02,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:35:02,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:35:02,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:35:02,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:35:02,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:35:02,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:35:02,950 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:35:02,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:35:02,950 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:35:02,951 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:35:02,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:35:02,951 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:35:02,951 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a191673-71e5-4c73-aefe-face9bcfad65/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a191673-71e5-4c73-aefe-face9bcfad65/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae9f818c1f032966d67b2bd4627e73bc680f5fe59ca24bfc7cff4e83563ff8e3 [2021-11-22 15:35:03,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:35:03,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:35:03,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:35:03,215 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:35:03,216 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:35:03,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a191673-71e5-4c73-aefe-face9bcfad65/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.11.cil-2.c [2021-11-22 15:35:03,286 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a191673-71e5-4c73-aefe-face9bcfad65/bin/uautomizer-w2VwFs6gM0/data/2133f1aa5/1a32298dee28492cb671437bd6d76363/FLAGdc1e4690c [2021-11-22 15:35:04,404 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:35:04,406 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a191673-71e5-4c73-aefe-face9bcfad65/sv-benchmarks/c/combinations/Problem05_label41+token_ring.11.cil-2.c [2021-11-22 15:35:04,469 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a191673-71e5-4c73-aefe-face9bcfad65/bin/uautomizer-w2VwFs6gM0/data/2133f1aa5/1a32298dee28492cb671437bd6d76363/FLAGdc1e4690c [2021-11-22 15:35:04,699 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a191673-71e5-4c73-aefe-face9bcfad65/bin/uautomizer-w2VwFs6gM0/data/2133f1aa5/1a32298dee28492cb671437bd6d76363 [2021-11-22 15:35:04,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:35:04,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:35:04,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:35:04,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:35:04,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:35:04,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:35:04" (1/1) ... [2021-11-22 15:35:04,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69e8330b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:04, skipping insertion in model container [2021-11-22 15:35:04,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:35:04" (1/1) ... [2021-11-22 15:35:04,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:35:05,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:35:07,579 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a191673-71e5-4c73-aefe-face9bcfad65/sv-benchmarks/c/combinations/Problem05_label41+token_ring.11.cil-2.c[376251,376264] [2021-11-22 15:35:07,626 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a191673-71e5-4c73-aefe-face9bcfad65/sv-benchmarks/c/combinations/Problem05_label41+token_ring.11.cil-2.c[383339,383352] [2021-11-22 15:35:08,019 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:35:08,029 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:35:09,403 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a191673-71e5-4c73-aefe-face9bcfad65/sv-benchmarks/c/combinations/Problem05_label41+token_ring.11.cil-2.c[376251,376264] [2021-11-22 15:35:09,422 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a191673-71e5-4c73-aefe-face9bcfad65/sv-benchmarks/c/combinations/Problem05_label41+token_ring.11.cil-2.c[383339,383352] [2021-11-22 15:35:09,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:35:09,545 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:35:09,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:09 WrapperNode [2021-11-22 15:35:09,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:35:09,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:35:09,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:35:09,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:35:09,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:09" (1/1) ... [2021-11-22 15:35:09,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:09" (1/1) ... [2021-11-22 15:35:10,292 INFO L137 Inliner]: procedures = 66, calls = 74, calls flagged for inlining = 69, calls inlined = 248, statements flattened = 16188 [2021-11-22 15:35:10,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:35:10,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:35:10,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:35:10,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:35:10,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:09" (1/1) ... [2021-11-22 15:35:10,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:09" (1/1) ... [2021-11-22 15:35:10,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:09" (1/1) ... [2021-11-22 15:35:10,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:09" (1/1) ... [2021-11-22 15:35:10,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:09" (1/1) ... [2021-11-22 15:35:10,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:09" (1/1) ... [2021-11-22 15:35:11,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:09" (1/1) ... [2021-11-22 15:35:11,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:35:11,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:35:11,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:35:11,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:35:11,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:09" (1/1) ... [2021-11-22 15:35:11,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:35:11,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a191673-71e5-4c73-aefe-face9bcfad65/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:35:11,100 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a191673-71e5-4c73-aefe-face9bcfad65/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:35:11,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a191673-71e5-4c73-aefe-face9bcfad65/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:35:11,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:35:11,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:35:11,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:35:11,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:35:11,374 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:35:11,376 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:35:21,371 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:35:21,423 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:35:21,423 INFO L301 CfgBuilder]: Removed 15 assume(true) statements. [2021-11-22 15:35:21,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:35:21 BoogieIcfgContainer [2021-11-22 15:35:21,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:35:21,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:35:21,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:35:21,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:35:21,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:35:04" (1/3) ... [2021-11-22 15:35:21,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bfca24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:35:21, skipping insertion in model container [2021-11-22 15:35:21,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:09" (2/3) ... [2021-11-22 15:35:21,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bfca24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:35:21, skipping insertion in model container [2021-11-22 15:35:21,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:35:21" (3/3) ... [2021-11-22 15:35:21,444 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.11.cil-2.c [2021-11-22 15:35:21,453 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:35:21,453 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-22 15:35:21,538 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:35:21,545 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 15:35:21,545 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-22 15:35:21,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 3756 states, 3753 states have (on average 1.7172928324007461) internal successors, (6445), 3755 states have internal predecessors, (6445), 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) [2021-11-22 15:35:21,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:35:21,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:21,660 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:21,661 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:21,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:21,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1990044540, now seen corresponding path program 1 times [2021-11-22 15:35:21,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:21,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248180809] [2021-11-22 15:35:21,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:21,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:21,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:21,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:21,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248180809] [2021-11-22 15:35:21,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248180809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:21,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:21,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:21,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451291033] [2021-11-22 15:35:21,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:21,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:35:21,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:22,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:35:22,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:22,031 INFO L87 Difference]: Start difference. First operand has 3756 states, 3753 states have (on average 1.7172928324007461) internal successors, (6445), 3755 states have internal predecessors, (6445), 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 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:22,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:22,411 INFO L93 Difference]: Finished difference Result 7502 states and 12871 transitions. [2021-11-22 15:35:22,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:35:22,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:35:22,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:22,460 INFO L225 Difference]: With dead ends: 7502 [2021-11-22 15:35:22,460 INFO L226 Difference]: Without dead ends: 3689 [2021-11-22 15:35:22,475 INFO L932 BasicCegarLoop]: 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 [2021-11-22 15:35:22,482 INFO L933 BasicCegarLoop]: 6352 mSDtfsCounter, 2321 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2321 SdHoareTripleChecker+Valid, 10374 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:22,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2321 Valid, 10374 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:35:22,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3689 states. [2021-11-22 15:35:22,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3689 to 3689. [2021-11-22 15:35:22,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3689 states, 3687 states have (on average 1.7043666937889883) internal successors, (6284), 3688 states have internal predecessors, (6284), 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) [2021-11-22 15:35:22,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 6284 transitions. [2021-11-22 15:35:22,711 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 6284 transitions. Word has length 154 [2021-11-22 15:35:22,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:22,712 INFO L470 AbstractCegarLoop]: Abstraction has 3689 states and 6284 transitions. [2021-11-22 15:35:22,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:22,714 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 6284 transitions. [2021-11-22 15:35:22,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:35:22,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:22,734 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:22,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:35:22,735 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:22,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:22,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1878368258, now seen corresponding path program 1 times [2021-11-22 15:35:22,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:22,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70893135] [2021-11-22 15:35:22,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:22,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:22,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:22,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:22,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70893135] [2021-11-22 15:35:22,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70893135] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:22,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:22,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:35:22,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919200418] [2021-11-22 15:35:22,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:22,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:35:22,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:22,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:35:22,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:22,982 INFO L87 Difference]: Start difference. First operand 3689 states and 6284 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-11-22 15:35:23,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:23,210 INFO L93 Difference]: Finished difference Result 6570 states and 10537 transitions. [2021-11-22 15:35:23,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:35:23,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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 154 [2021-11-22 15:35:23,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:23,247 INFO L225 Difference]: With dead ends: 6570 [2021-11-22 15:35:23,247 INFO L226 Difference]: Without dead ends: 5020 [2021-11-22 15:35:23,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:23,254 INFO L933 BasicCegarLoop]: 6278 mSDtfsCounter, 6138 mSDsluCounter, 2073 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6138 SdHoareTripleChecker+Valid, 8351 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:23,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6138 Valid, 8351 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:35:23,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5020 states. [2021-11-22 15:35:23,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5020 to 5018. [2021-11-22 15:35:23,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.641945773524721) internal successors, (8236), 5017 states have internal predecessors, (8236), 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) [2021-11-22 15:35:23,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8236 transitions. [2021-11-22 15:35:23,623 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8236 transitions. Word has length 154 [2021-11-22 15:35:23,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:23,625 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8236 transitions. [2021-11-22 15:35:23,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-11-22 15:35:23,625 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8236 transitions. [2021-11-22 15:35:23,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:35:23,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:23,632 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:23,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:35:23,635 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:23,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:23,636 INFO L85 PathProgramCache]: Analyzing trace with hash 450889794, now seen corresponding path program 1 times [2021-11-22 15:35:23,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:23,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689504704] [2021-11-22 15:35:23,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:23,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:23,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:23,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:23,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689504704] [2021-11-22 15:35:23,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689504704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:23,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:23,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:35:23,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316718192] [2021-11-22 15:35:23,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:23,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:35:23,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:23,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:35:23,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:23,718 INFO L87 Difference]: Start difference. First operand 5018 states and 8236 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-11-22 15:35:23,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:23,897 INFO L93 Difference]: Finished difference Result 7896 states and 12483 transitions. [2021-11-22 15:35:23,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:35:23,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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 154 [2021-11-22 15:35:23,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:23,930 INFO L225 Difference]: With dead ends: 7896 [2021-11-22 15:35:23,930 INFO L226 Difference]: Without dead ends: 5018 [2021-11-22 15:35:23,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:23,937 INFO L933 BasicCegarLoop]: 6272 mSDtfsCounter, 6258 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6258 SdHoareTripleChecker+Valid, 6272 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:23,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6258 Valid, 6272 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:35:23,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5018 states. [2021-11-22 15:35:24,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5018 to 5018. [2021-11-22 15:35:24,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6403508771929824) internal successors, (8228), 5017 states have internal predecessors, (8228), 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) [2021-11-22 15:35:24,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8228 transitions. [2021-11-22 15:35:24,164 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8228 transitions. Word has length 154 [2021-11-22 15:35:24,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:24,165 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8228 transitions. [2021-11-22 15:35:24,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-11-22 15:35:24,166 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8228 transitions. [2021-11-22 15:35:24,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:35:24,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:24,169 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:24,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:35:24,169 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:24,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:24,171 INFO L85 PathProgramCache]: Analyzing trace with hash 820484098, now seen corresponding path program 1 times [2021-11-22 15:35:24,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:24,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44603903] [2021-11-22 15:35:24,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:24,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:24,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:24,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:24,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44603903] [2021-11-22 15:35:24,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44603903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:24,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:24,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:35:24,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549115898] [2021-11-22 15:35:24,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:24,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:35:24,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:24,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:35:24,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:24,312 INFO L87 Difference]: Start difference. First operand 5018 states and 8228 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-11-22 15:35:24,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:24,499 INFO L93 Difference]: Finished difference Result 7895 states and 12466 transitions. [2021-11-22 15:35:24,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:35:24,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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 154 [2021-11-22 15:35:24,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:24,531 INFO L225 Difference]: With dead ends: 7895 [2021-11-22 15:35:24,532 INFO L226 Difference]: Without dead ends: 5018 [2021-11-22 15:35:24,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:24,549 INFO L933 BasicCegarLoop]: 6267 mSDtfsCounter, 6252 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6252 SdHoareTripleChecker+Valid, 6267 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:24,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6252 Valid, 6267 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:35:24,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5018 states. [2021-11-22 15:35:24,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5018 to 5018. [2021-11-22 15:35:24,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.638755980861244) internal successors, (8220), 5017 states have internal predecessors, (8220), 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) [2021-11-22 15:35:24,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8220 transitions. [2021-11-22 15:35:24,772 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8220 transitions. Word has length 154 [2021-11-22 15:35:24,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:24,773 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8220 transitions. [2021-11-22 15:35:24,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-11-22 15:35:24,774 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8220 transitions. [2021-11-22 15:35:24,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:35:24,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:24,777 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:24,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:35:24,777 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:24,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:24,780 INFO L85 PathProgramCache]: Analyzing trace with hash -137424830, now seen corresponding path program 1 times [2021-11-22 15:35:24,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:24,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771692679] [2021-11-22 15:35:24,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:24,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:24,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:24,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:24,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771692679] [2021-11-22 15:35:24,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771692679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:24,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:24,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:24,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192617529] [2021-11-22 15:35:24,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:24,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:35:24,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:24,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:35:24,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:35:24,876 INFO L87 Difference]: Start difference. First operand 5018 states and 8220 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:25,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:25,445 INFO L93 Difference]: Finished difference Result 10661 states and 16512 transitions. [2021-11-22 15:35:25,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:35:25,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:35:25,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:25,504 INFO L225 Difference]: With dead ends: 10661 [2021-11-22 15:35:25,504 INFO L226 Difference]: Without dead ends: 7785 [2021-11-22 15:35:25,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:25,512 INFO L933 BasicCegarLoop]: 8366 mSDtfsCounter, 12512 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12512 SdHoareTripleChecker+Valid, 10472 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:25,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12512 Valid, 10472 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:35:25,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7785 states. [2021-11-22 15:35:25,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7785 to 5018. [2021-11-22 15:35:25,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.638157894736842) internal successors, (8217), 5017 states have internal predecessors, (8217), 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) [2021-11-22 15:35:25,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8217 transitions. [2021-11-22 15:35:25,751 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8217 transitions. Word has length 154 [2021-11-22 15:35:25,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:25,751 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8217 transitions. [2021-11-22 15:35:25,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:25,752 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8217 transitions. [2021-11-22 15:35:25,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:35:25,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:25,755 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:25,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 15:35:25,756 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:25,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:25,756 INFO L85 PathProgramCache]: Analyzing trace with hash 226041668, now seen corresponding path program 1 times [2021-11-22 15:35:25,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:25,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670256457] [2021-11-22 15:35:25,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:25,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:25,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:25,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:25,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670256457] [2021-11-22 15:35:25,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670256457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:25,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:25,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:25,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512610074] [2021-11-22 15:35:25,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:25,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:35:25,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:25,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:35:25,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:35:25,823 INFO L87 Difference]: Start difference. First operand 5018 states and 8217 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:26,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:26,207 INFO L93 Difference]: Finished difference Result 10659 states and 16501 transitions. [2021-11-22 15:35:26,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:35:26,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:35:26,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:26,232 INFO L225 Difference]: With dead ends: 10659 [2021-11-22 15:35:26,232 INFO L226 Difference]: Without dead ends: 7784 [2021-11-22 15:35:26,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:26,241 INFO L933 BasicCegarLoop]: 8361 mSDtfsCounter, 12507 mSDsluCounter, 2103 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12507 SdHoareTripleChecker+Valid, 10464 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:26,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12507 Valid, 10464 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:35:26,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7784 states. [2021-11-22 15:35:26,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7784 to 5018. [2021-11-22 15:35:26,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.63755980861244) internal successors, (8214), 5017 states have internal predecessors, (8214), 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) [2021-11-22 15:35:26,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8214 transitions. [2021-11-22 15:35:26,619 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8214 transitions. Word has length 154 [2021-11-22 15:35:26,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:26,619 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8214 transitions. [2021-11-22 15:35:26,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:26,620 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8214 transitions. [2021-11-22 15:35:26,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:35:26,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:26,623 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:26,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 15:35:26,623 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:26,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:26,624 INFO L85 PathProgramCache]: Analyzing trace with hash 514861058, now seen corresponding path program 1 times [2021-11-22 15:35:26,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:26,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882232051] [2021-11-22 15:35:26,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:26,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:26,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:26,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:26,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882232051] [2021-11-22 15:35:26,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882232051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:26,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:26,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:26,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979689031] [2021-11-22 15:35:26,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:26,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:35:26,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:26,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:35:26,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:35:26,674 INFO L87 Difference]: Start difference. First operand 5018 states and 8214 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:27,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:27,178 INFO L93 Difference]: Finished difference Result 10657 states and 16490 transitions. [2021-11-22 15:35:27,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:35:27,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:35:27,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:27,195 INFO L225 Difference]: With dead ends: 10657 [2021-11-22 15:35:27,195 INFO L226 Difference]: Without dead ends: 7783 [2021-11-22 15:35:27,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:27,202 INFO L933 BasicCegarLoop]: 8356 mSDtfsCounter, 12502 mSDsluCounter, 2100 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12502 SdHoareTripleChecker+Valid, 10456 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:27,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12502 Valid, 10456 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:35:27,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7783 states. [2021-11-22 15:35:27,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7783 to 5018. [2021-11-22 15:35:27,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6369617224880382) internal successors, (8211), 5017 states have internal predecessors, (8211), 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) [2021-11-22 15:35:27,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8211 transitions. [2021-11-22 15:35:27,425 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8211 transitions. Word has length 154 [2021-11-22 15:35:27,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:27,426 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8211 transitions. [2021-11-22 15:35:27,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:27,426 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8211 transitions. [2021-11-22 15:35:27,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:35:27,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:27,429 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:27,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 15:35:27,429 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:27,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:27,430 INFO L85 PathProgramCache]: Analyzing trace with hash -30011516, now seen corresponding path program 1 times [2021-11-22 15:35:27,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:27,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839939110] [2021-11-22 15:35:27,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:27,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:27,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:27,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:27,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839939110] [2021-11-22 15:35:27,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839939110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:27,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:27,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:27,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841600678] [2021-11-22 15:35:27,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:27,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:35:27,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:27,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:35:27,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:35:27,473 INFO L87 Difference]: Start difference. First operand 5018 states and 8211 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:27,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:27,948 INFO L93 Difference]: Finished difference Result 10655 states and 16479 transitions. [2021-11-22 15:35:27,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:35:27,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:35:27,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:27,965 INFO L225 Difference]: With dead ends: 10655 [2021-11-22 15:35:27,966 INFO L226 Difference]: Without dead ends: 7782 [2021-11-22 15:35:27,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:27,973 INFO L933 BasicCegarLoop]: 6514 mSDtfsCounter, 14336 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14336 SdHoareTripleChecker+Valid, 8611 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:27,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14336 Valid, 8611 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:35:27,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7782 states. [2021-11-22 15:35:28,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7782 to 5018. [2021-11-22 15:35:28,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6363636363636365) internal successors, (8208), 5017 states have internal predecessors, (8208), 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) [2021-11-22 15:35:28,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8208 transitions. [2021-11-22 15:35:28,225 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8208 transitions. Word has length 154 [2021-11-22 15:35:28,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:28,225 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8208 transitions. [2021-11-22 15:35:28,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:28,255 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8208 transitions. [2021-11-22 15:35:28,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:35:28,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:28,257 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:28,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 15:35:28,258 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:28,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:28,259 INFO L85 PathProgramCache]: Analyzing trace with hash 645148610, now seen corresponding path program 1 times [2021-11-22 15:35:28,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:28,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558228360] [2021-11-22 15:35:28,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:28,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:28,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:28,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:28,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558228360] [2021-11-22 15:35:28,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558228360] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:28,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:28,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:28,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883642896] [2021-11-22 15:35:28,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:28,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:35:28,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:28,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:35:28,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:35:28,299 INFO L87 Difference]: Start difference. First operand 5018 states and 8208 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:28,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:28,695 INFO L93 Difference]: Finished difference Result 10651 states and 16464 transitions. [2021-11-22 15:35:28,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:35:28,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:35:28,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:28,711 INFO L225 Difference]: With dead ends: 10651 [2021-11-22 15:35:28,712 INFO L226 Difference]: Without dead ends: 7780 [2021-11-22 15:35:28,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:28,719 INFO L933 BasicCegarLoop]: 8344 mSDtfsCounter, 12491 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12491 SdHoareTripleChecker+Valid, 10436 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:28,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12491 Valid, 10436 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:35:28,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7780 states. [2021-11-22 15:35:28,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7780 to 5018. [2021-11-22 15:35:28,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6357655502392345) internal successors, (8205), 5017 states have internal predecessors, (8205), 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) [2021-11-22 15:35:28,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8205 transitions. [2021-11-22 15:35:28,983 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8205 transitions. Word has length 154 [2021-11-22 15:35:28,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:28,983 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8205 transitions. [2021-11-22 15:35:28,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:28,984 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8205 transitions. [2021-11-22 15:35:28,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:35:28,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:28,987 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:28,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 15:35:28,987 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:28,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:28,988 INFO L85 PathProgramCache]: Analyzing trace with hash 60376960, now seen corresponding path program 1 times [2021-11-22 15:35:28,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:28,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243785086] [2021-11-22 15:35:28,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:28,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:29,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:29,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:29,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243785086] [2021-11-22 15:35:29,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243785086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:29,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:29,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:29,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523821497] [2021-11-22 15:35:29,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:29,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:35:29,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:29,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:35:29,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:35:29,033 INFO L87 Difference]: Start difference. First operand 5018 states and 8205 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:29,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:29,481 INFO L93 Difference]: Finished difference Result 10649 states and 16453 transitions. [2021-11-22 15:35:29,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:35:29,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:35:29,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:29,498 INFO L225 Difference]: With dead ends: 10649 [2021-11-22 15:35:29,498 INFO L226 Difference]: Without dead ends: 7779 [2021-11-22 15:35:29,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:29,506 INFO L933 BasicCegarLoop]: 8339 mSDtfsCounter, 12486 mSDsluCounter, 2089 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12486 SdHoareTripleChecker+Valid, 10428 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:29,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12486 Valid, 10428 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:35:29,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7779 states. [2021-11-22 15:35:29,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7779 to 5018. [2021-11-22 15:35:29,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6351674641148326) internal successors, (8202), 5017 states have internal predecessors, (8202), 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) [2021-11-22 15:35:29,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8202 transitions. [2021-11-22 15:35:29,745 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8202 transitions. Word has length 154 [2021-11-22 15:35:29,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:29,745 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8202 transitions. [2021-11-22 15:35:29,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:29,746 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8202 transitions. [2021-11-22 15:35:29,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:35:29,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:29,748 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:29,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 15:35:29,749 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:29,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:29,749 INFO L85 PathProgramCache]: Analyzing trace with hash -374128638, now seen corresponding path program 1 times [2021-11-22 15:35:29,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:29,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195599342] [2021-11-22 15:35:29,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:29,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:29,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:29,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:29,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195599342] [2021-11-22 15:35:29,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195599342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:29,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:29,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:29,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827544002] [2021-11-22 15:35:29,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:29,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:35:29,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:29,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:35:29,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:35:29,794 INFO L87 Difference]: Start difference. First operand 5018 states and 8202 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:30,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:30,313 INFO L93 Difference]: Finished difference Result 10647 states and 16442 transitions. [2021-11-22 15:35:30,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:35:30,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:35:30,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:30,333 INFO L225 Difference]: With dead ends: 10647 [2021-11-22 15:35:30,333 INFO L226 Difference]: Without dead ends: 7778 [2021-11-22 15:35:30,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:30,342 INFO L933 BasicCegarLoop]: 8334 mSDtfsCounter, 12481 mSDsluCounter, 2086 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12481 SdHoareTripleChecker+Valid, 10420 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:30,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12481 Valid, 10420 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:35:30,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7778 states. [2021-11-22 15:35:30,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7778 to 5018. [2021-11-22 15:35:30,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6345693779904307) internal successors, (8199), 5017 states have internal predecessors, (8199), 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) [2021-11-22 15:35:30,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8199 transitions. [2021-11-22 15:35:30,732 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8199 transitions. Word has length 154 [2021-11-22 15:35:30,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:30,732 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8199 transitions. [2021-11-22 15:35:30,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:30,733 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8199 transitions. [2021-11-22 15:35:30,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:35:30,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:30,736 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:30,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 15:35:30,736 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:30,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:30,737 INFO L85 PathProgramCache]: Analyzing trace with hash -803786944, now seen corresponding path program 1 times [2021-11-22 15:35:30,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:30,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562276090] [2021-11-22 15:35:30,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:30,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:30,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:30,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:30,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562276090] [2021-11-22 15:35:30,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562276090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:30,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:30,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:30,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69070024] [2021-11-22 15:35:30,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:30,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:35:30,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:30,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:35:30,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:35:30,804 INFO L87 Difference]: Start difference. First operand 5018 states and 8199 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:31,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:31,443 INFO L93 Difference]: Finished difference Result 10645 states and 16431 transitions. [2021-11-22 15:35:31,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:35:31,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:35:31,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:31,464 INFO L225 Difference]: With dead ends: 10645 [2021-11-22 15:35:31,464 INFO L226 Difference]: Without dead ends: 7777 [2021-11-22 15:35:31,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:31,473 INFO L933 BasicCegarLoop]: 8329 mSDtfsCounter, 12476 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12476 SdHoareTripleChecker+Valid, 10412 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:31,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12476 Valid, 10412 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:35:31,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7777 states. [2021-11-22 15:35:31,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7777 to 5018. [2021-11-22 15:35:31,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6339712918660287) internal successors, (8196), 5017 states have internal predecessors, (8196), 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) [2021-11-22 15:35:31,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8196 transitions. [2021-11-22 15:35:31,822 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8196 transitions. Word has length 154 [2021-11-22 15:35:31,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:31,824 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8196 transitions. [2021-11-22 15:35:31,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8196 transitions. [2021-11-22 15:35:31,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:35:31,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:31,828 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:31,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 15:35:31,829 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:31,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:31,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1510383550, now seen corresponding path program 1 times [2021-11-22 15:35:31,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:31,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062361978] [2021-11-22 15:35:31,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:31,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:31,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:31,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:31,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062361978] [2021-11-22 15:35:31,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062361978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:31,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:31,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:31,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078399266] [2021-11-22 15:35:31,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:31,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:35:31,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:31,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:35:31,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:35:31,896 INFO L87 Difference]: Start difference. First operand 5018 states and 8196 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:32,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:32,687 INFO L93 Difference]: Finished difference Result 10473 states and 16178 transitions. [2021-11-22 15:35:32,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:35:32,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:35:32,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:32,706 INFO L225 Difference]: With dead ends: 10473 [2021-11-22 15:35:32,706 INFO L226 Difference]: Without dead ends: 7606 [2021-11-22 15:35:32,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:32,715 INFO L933 BasicCegarLoop]: 8147 mSDtfsCounter, 12347 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12347 SdHoareTripleChecker+Valid, 10197 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:32,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12347 Valid, 10197 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:35:32,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7606 states. [2021-11-22 15:35:33,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7606 to 5018. [2021-11-22 15:35:33,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6333732057416268) internal successors, (8193), 5017 states have internal predecessors, (8193), 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) [2021-11-22 15:35:33,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8193 transitions. [2021-11-22 15:35:33,107 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8193 transitions. Word has length 154 [2021-11-22 15:35:33,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:33,108 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8193 transitions. [2021-11-22 15:35:33,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:33,108 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8193 transitions. [2021-11-22 15:35:33,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:35:33,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:33,112 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:33,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 15:35:33,112 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:33,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:33,113 INFO L85 PathProgramCache]: Analyzing trace with hash -563345664, now seen corresponding path program 1 times [2021-11-22 15:35:33,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:33,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879476103] [2021-11-22 15:35:33,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:33,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:33,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:33,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:33,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879476103] [2021-11-22 15:35:33,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879476103] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:33,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:33,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:33,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245581893] [2021-11-22 15:35:33,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:33,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:35:33,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:33,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:35:33,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:35:33,185 INFO L87 Difference]: Start difference. First operand 5018 states and 8193 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:33,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:33,828 INFO L93 Difference]: Finished difference Result 10469 states and 16165 transitions. [2021-11-22 15:35:33,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:35:33,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:35:33,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:33,845 INFO L225 Difference]: With dead ends: 10469 [2021-11-22 15:35:33,846 INFO L226 Difference]: Without dead ends: 7603 [2021-11-22 15:35:33,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:33,854 INFO L933 BasicCegarLoop]: 8141 mSDtfsCounter, 12341 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12341 SdHoareTripleChecker+Valid, 10188 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:33,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12341 Valid, 10188 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:35:33,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7603 states. [2021-11-22 15:35:34,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7603 to 5018. [2021-11-22 15:35:34,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6327751196172249) internal successors, (8190), 5017 states have internal predecessors, (8190), 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) [2021-11-22 15:35:34,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8190 transitions. [2021-11-22 15:35:34,258 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8190 transitions. Word has length 154 [2021-11-22 15:35:34,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:34,259 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8190 transitions. [2021-11-22 15:35:34,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:34,259 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8190 transitions. [2021-11-22 15:35:34,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:35:34,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:34,262 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:34,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 15:35:34,263 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:34,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:34,263 INFO L85 PathProgramCache]: Analyzing trace with hash 298487938, now seen corresponding path program 1 times [2021-11-22 15:35:34,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:34,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188566006] [2021-11-22 15:35:34,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:34,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:34,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:34,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:34,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188566006] [2021-11-22 15:35:34,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188566006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:34,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:34,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:35:34,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502308983] [2021-11-22 15:35:34,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:34,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:35:34,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:34,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:35:34,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:34,309 INFO L87 Difference]: Start difference. First operand 5018 states and 8190 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-11-22 15:35:34,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:34,647 INFO L93 Difference]: Finished difference Result 7883 states and 12377 transitions. [2021-11-22 15:35:34,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:35:34,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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 154 [2021-11-22 15:35:34,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:34,660 INFO L225 Difference]: With dead ends: 7883 [2021-11-22 15:35:34,660 INFO L226 Difference]: Without dead ends: 5018 [2021-11-22 15:35:34,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:34,668 INFO L933 BasicCegarLoop]: 6214 mSDtfsCounter, 6079 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6079 SdHoareTripleChecker+Valid, 6332 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:34,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6079 Valid, 6332 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:35:34,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5018 states. [2021-11-22 15:35:34,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5018 to 5018. [2021-11-22 15:35:34,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6259968102073366) internal successors, (8156), 5017 states have internal predecessors, (8156), 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) [2021-11-22 15:35:34,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8156 transitions. [2021-11-22 15:35:34,955 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8156 transitions. Word has length 154 [2021-11-22 15:35:34,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:34,956 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8156 transitions. [2021-11-22 15:35:34,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-11-22 15:35:34,956 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8156 transitions. [2021-11-22 15:35:34,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:35:34,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:34,959 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:34,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 15:35:34,960 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:34,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:34,960 INFO L85 PathProgramCache]: Analyzing trace with hash 432479681, now seen corresponding path program 1 times [2021-11-22 15:35:34,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:34,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449300784] [2021-11-22 15:35:34,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:34,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:35,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:35,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449300784] [2021-11-22 15:35:35,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449300784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:35,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:35,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:35,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488574492] [2021-11-22 15:35:35,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:35,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:35:35,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:35,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:35:35,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:35:35,019 INFO L87 Difference]: Start difference. First operand 5018 states and 8156 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:35,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:35,681 INFO L93 Difference]: Finished difference Result 10465 states and 16052 transitions. [2021-11-22 15:35:35,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:35:35,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:35:35,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:35,700 INFO L225 Difference]: With dead ends: 10465 [2021-11-22 15:35:35,700 INFO L226 Difference]: Without dead ends: 7602 [2021-11-22 15:35:35,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:35,707 INFO L933 BasicCegarLoop]: 8099 mSDtfsCounter, 12298 mSDsluCounter, 2024 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12298 SdHoareTripleChecker+Valid, 10123 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:35,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12298 Valid, 10123 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:35:35,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7602 states. [2021-11-22 15:35:36,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7602 to 5018. [2021-11-22 15:35:36,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6253987240829346) internal successors, (8153), 5017 states have internal predecessors, (8153), 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) [2021-11-22 15:35:36,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8153 transitions. [2021-11-22 15:35:36,018 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8153 transitions. Word has length 154 [2021-11-22 15:35:36,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:36,019 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8153 transitions. [2021-11-22 15:35:36,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:36,019 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8153 transitions. [2021-11-22 15:35:36,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:35:36,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:36,022 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:36,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 15:35:36,022 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:36,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:36,023 INFO L85 PathProgramCache]: Analyzing trace with hash -660155521, now seen corresponding path program 1 times [2021-11-22 15:35:36,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:36,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692647087] [2021-11-22 15:35:36,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:36,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:36,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:36,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:36,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692647087] [2021-11-22 15:35:36,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692647087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:36,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:36,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:36,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540203987] [2021-11-22 15:35:36,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:36,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:35:36,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:36,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:35:36,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:35:36,080 INFO L87 Difference]: Start difference. First operand 5018 states and 8153 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:36,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:36,674 INFO L93 Difference]: Finished difference Result 10463 states and 16041 transitions. [2021-11-22 15:35:36,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:35:36,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:35:36,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:36,691 INFO L225 Difference]: With dead ends: 10463 [2021-11-22 15:35:36,691 INFO L226 Difference]: Without dead ends: 7601 [2021-11-22 15:35:36,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:36,697 INFO L933 BasicCegarLoop]: 8094 mSDtfsCounter, 12293 mSDsluCounter, 2021 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12293 SdHoareTripleChecker+Valid, 10115 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:36,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12293 Valid, 10115 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:35:36,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7601 states. [2021-11-22 15:35:37,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7601 to 5018. [2021-11-22 15:35:37,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6248006379585327) internal successors, (8150), 5017 states have internal predecessors, (8150), 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) [2021-11-22 15:35:37,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8150 transitions. [2021-11-22 15:35:37,019 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8150 transitions. Word has length 154 [2021-11-22 15:35:37,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:37,019 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8150 transitions. [2021-11-22 15:35:37,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:37,020 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8150 transitions. [2021-11-22 15:35:37,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:35:37,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:37,022 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:37,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 15:35:37,023 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:37,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:37,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1942327807, now seen corresponding path program 1 times [2021-11-22 15:35:37,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:37,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554274540] [2021-11-22 15:35:37,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:37,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:37,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:37,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:37,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554274540] [2021-11-22 15:35:37,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554274540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:37,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:37,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:37,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171241215] [2021-11-22 15:35:37,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:37,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:35:37,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:37,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:35:37,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:35:37,069 INFO L87 Difference]: Start difference. First operand 5018 states and 8150 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:37,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:37,718 INFO L93 Difference]: Finished difference Result 10461 states and 16030 transitions. [2021-11-22 15:35:37,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:35:37,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:35:37,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:37,739 INFO L225 Difference]: With dead ends: 10461 [2021-11-22 15:35:37,740 INFO L226 Difference]: Without dead ends: 7600 [2021-11-22 15:35:37,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:37,746 INFO L933 BasicCegarLoop]: 8089 mSDtfsCounter, 12288 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12288 SdHoareTripleChecker+Valid, 10107 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:37,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12288 Valid, 10107 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:35:37,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7600 states. [2021-11-22 15:35:38,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7600 to 5018. [2021-11-22 15:35:38,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6242025518341308) internal successors, (8147), 5017 states have internal predecessors, (8147), 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) [2021-11-22 15:35:38,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8147 transitions. [2021-11-22 15:35:38,230 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8147 transitions. Word has length 154 [2021-11-22 15:35:38,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:38,231 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8147 transitions. [2021-11-22 15:35:38,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:38,231 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8147 transitions. [2021-11-22 15:35:38,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:35:38,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:38,234 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:38,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 15:35:38,234 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:38,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:38,235 INFO L85 PathProgramCache]: Analyzing trace with hash 510163775, now seen corresponding path program 1 times [2021-11-22 15:35:38,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:38,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615249919] [2021-11-22 15:35:38,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:38,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:38,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:38,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615249919] [2021-11-22 15:35:38,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615249919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:38,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:38,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:35:38,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145537924] [2021-11-22 15:35:38,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:38,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:35:38,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:38,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:35:38,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:38,277 INFO L87 Difference]: Start difference. First operand 5018 states and 8147 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-11-22 15:35:38,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:38,653 INFO L93 Difference]: Finished difference Result 7878 states and 12285 transitions. [2021-11-22 15:35:38,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:35:38,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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 154 [2021-11-22 15:35:38,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:38,665 INFO L225 Difference]: With dead ends: 7878 [2021-11-22 15:35:38,665 INFO L226 Difference]: Without dead ends: 5018 [2021-11-22 15:35:38,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:38,671 INFO L933 BasicCegarLoop]: 6189 mSDtfsCounter, 6050 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6050 SdHoareTripleChecker+Valid, 6306 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:38,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6050 Valid, 6306 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:35:38,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5018 states. [2021-11-22 15:35:39,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5018 to 5018. [2021-11-22 15:35:39,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6174242424242424) internal successors, (8113), 5017 states have internal predecessors, (8113), 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) [2021-11-22 15:35:39,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8113 transitions. [2021-11-22 15:35:39,078 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8113 transitions. Word has length 154 [2021-11-22 15:35:39,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:39,078 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8113 transitions. [2021-11-22 15:35:39,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-11-22 15:35:39,079 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8113 transitions. [2021-11-22 15:35:39,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:35:39,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:39,082 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:39,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 15:35:39,082 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:39,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:39,083 INFO L85 PathProgramCache]: Analyzing trace with hash -891858496, now seen corresponding path program 1 times [2021-11-22 15:35:39,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:39,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699816545] [2021-11-22 15:35:39,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:39,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:39,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:39,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:39,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699816545] [2021-11-22 15:35:39,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699816545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:39,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:39,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:39,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587576505] [2021-11-22 15:35:39,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:39,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:35:39,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:39,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:35:39,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:35:39,133 INFO L87 Difference]: Start difference. First operand 5018 states and 8113 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:39,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:39,630 INFO L93 Difference]: Finished difference Result 10457 states and 15919 transitions. [2021-11-22 15:35:39,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:35:39,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:35:39,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:39,647 INFO L225 Difference]: With dead ends: 10457 [2021-11-22 15:35:39,648 INFO L226 Difference]: Without dead ends: 7598 [2021-11-22 15:35:39,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:39,654 INFO L933 BasicCegarLoop]: 8048 mSDtfsCounter, 12245 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12245 SdHoareTripleChecker+Valid, 10045 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:39,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12245 Valid, 10045 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:35:39,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7598 states. [2021-11-22 15:35:39,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7598 to 5018. [2021-11-22 15:35:39,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6168261562998405) internal successors, (8110), 5017 states have internal predecessors, (8110), 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) [2021-11-22 15:35:40,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8110 transitions. [2021-11-22 15:35:40,006 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8110 transitions. Word has length 154 [2021-11-22 15:35:40,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:40,006 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8110 transitions. [2021-11-22 15:35:40,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:40,007 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8110 transitions. [2021-11-22 15:35:40,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:35:40,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:40,009 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:40,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-22 15:35:40,009 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:40,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:40,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1224501634, now seen corresponding path program 1 times [2021-11-22 15:35:40,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:40,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632603132] [2021-11-22 15:35:40,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:40,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:40,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:40,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:40,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632603132] [2021-11-22 15:35:40,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632603132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:40,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:40,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:40,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921035697] [2021-11-22 15:35:40,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:40,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:35:40,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:40,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:35:40,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:35:40,056 INFO L87 Difference]: Start difference. First operand 5018 states and 8110 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:40,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:40,801 INFO L93 Difference]: Finished difference Result 10455 states and 15908 transitions. [2021-11-22 15:35:40,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:35:40,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:35:40,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:40,817 INFO L225 Difference]: With dead ends: 10455 [2021-11-22 15:35:40,817 INFO L226 Difference]: Without dead ends: 7597 [2021-11-22 15:35:40,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:40,825 INFO L933 BasicCegarLoop]: 8043 mSDtfsCounter, 12240 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12240 SdHoareTripleChecker+Valid, 10037 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:40,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12240 Valid, 10037 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:35:40,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7597 states. [2021-11-22 15:35:41,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7597 to 5018. [2021-11-22 15:35:41,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6162280701754386) internal successors, (8107), 5017 states have internal predecessors, (8107), 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) [2021-11-22 15:35:41,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8107 transitions. [2021-11-22 15:35:41,175 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8107 transitions. Word has length 154 [2021-11-22 15:35:41,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:41,176 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8107 transitions. [2021-11-22 15:35:41,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:41,176 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8107 transitions. [2021-11-22 15:35:41,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:35:41,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:41,178 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:41,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-22 15:35:41,179 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:41,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:41,180 INFO L85 PathProgramCache]: Analyzing trace with hash 704430592, now seen corresponding path program 1 times [2021-11-22 15:35:41,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:41,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130430971] [2021-11-22 15:35:41,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:41,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:41,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:41,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:41,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130430971] [2021-11-22 15:35:41,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130430971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:41,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:41,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:41,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728036430] [2021-11-22 15:35:41,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:41,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:35:41,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:41,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:35:41,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:35:41,226 INFO L87 Difference]: Start difference. First operand 5018 states and 8107 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:41,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:41,986 INFO L93 Difference]: Finished difference Result 10453 states and 15897 transitions. [2021-11-22 15:35:41,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:35:41,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:35:41,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:41,999 INFO L225 Difference]: With dead ends: 10453 [2021-11-22 15:35:41,999 INFO L226 Difference]: Without dead ends: 7596 [2021-11-22 15:35:42,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:42,006 INFO L933 BasicCegarLoop]: 6384 mSDtfsCounter, 13914 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13914 SdHoareTripleChecker+Valid, 8375 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:42,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13914 Valid, 8375 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:35:42,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7596 states. [2021-11-22 15:35:42,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7596 to 5018. [2021-11-22 15:35:42,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6156299840510366) internal successors, (8104), 5017 states have internal predecessors, (8104), 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) [2021-11-22 15:35:42,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8104 transitions. [2021-11-22 15:35:42,412 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8104 transitions. Word has length 154 [2021-11-22 15:35:42,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:42,412 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8104 transitions. [2021-11-22 15:35:42,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:35:42,412 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8104 transitions. [2021-11-22 15:35:42,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:35:42,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:42,414 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:42,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 15:35:42,414 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:42,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:42,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1588650434, now seen corresponding path program 1 times [2021-11-22 15:35:42,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:42,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238832189] [2021-11-22 15:35:42,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:42,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:42,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:42,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:42,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238832189] [2021-11-22 15:35:42,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238832189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:42,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:42,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:35:42,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406591120] [2021-11-22 15:35:42,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:42,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:35:42,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:42,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:35:42,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:42,453 INFO L87 Difference]: Start difference. First operand 5018 states and 8104 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-11-22 15:35:42,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:42,990 INFO L93 Difference]: Finished difference Result 10582 states and 16053 transitions. [2021-11-22 15:35:42,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:35:42,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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 154 [2021-11-22 15:35:42,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:42,999 INFO L225 Difference]: With dead ends: 10582 [2021-11-22 15:35:43,000 INFO L226 Difference]: Without dead ends: 7728 [2021-11-22 15:35:43,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:43,007 INFO L933 BasicCegarLoop]: 6183 mSDtfsCounter, 6106 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6106 SdHoareTripleChecker+Valid, 8176 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:43,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6106 Valid, 8176 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:35:43,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7728 states. [2021-11-22 15:35:43,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7728 to 7562. [2021-11-22 15:35:43,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7562 states, 7560 states have (on average 1.5482804232804233) internal successors, (11705), 7561 states have internal predecessors, (11705), 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) [2021-11-22 15:35:43,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7562 states to 7562 states and 11705 transitions. [2021-11-22 15:35:43,626 INFO L78 Accepts]: Start accepts. Automaton has 7562 states and 11705 transitions. Word has length 154 [2021-11-22 15:35:43,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:43,626 INFO L470 AbstractCegarLoop]: Abstraction has 7562 states and 11705 transitions. [2021-11-22 15:35:43,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-11-22 15:35:43,627 INFO L276 IsEmpty]: Start isEmpty. Operand 7562 states and 11705 transitions. [2021-11-22 15:35:43,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-22 15:35:43,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:43,634 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:43,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-22 15:35:43,635 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:43,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:43,636 INFO L85 PathProgramCache]: Analyzing trace with hash 2126079365, now seen corresponding path program 1 times [2021-11-22 15:35:43,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:43,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368010464] [2021-11-22 15:35:43,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:43,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:43,723 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:35:43,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:43,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368010464] [2021-11-22 15:35:43,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368010464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:43,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:43,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:35:43,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130248786] [2021-11-22 15:35:43,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:43,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:35:43,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:43,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:35:43,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:43,728 INFO L87 Difference]: Start difference. First operand 7562 states and 11705 transitions. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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) [2021-11-22 15:35:45,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:45,135 INFO L93 Difference]: Finished difference Result 18213 states and 26876 transitions. [2021-11-22 15:35:45,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:35:45,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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 250 [2021-11-22 15:35:45,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:45,150 INFO L225 Difference]: With dead ends: 18213 [2021-11-22 15:35:45,150 INFO L226 Difference]: Without dead ends: 12819 [2021-11-22 15:35:45,158 INFO L932 BasicCegarLoop]: 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 [2021-11-22 15:35:45,158 INFO L933 BasicCegarLoop]: 6153 mSDtfsCounter, 8093 mSDsluCounter, 20970 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8093 SdHoareTripleChecker+Valid, 27123 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:45,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8093 Valid, 27123 Invalid, 259 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:35:45,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12819 states. [2021-11-22 15:35:45,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12819 to 7643. [2021-11-22 15:35:45,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7643 states, 7641 states have (on average 1.5390655673341185) internal successors, (11760), 7642 states have internal predecessors, (11760), 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) [2021-11-22 15:35:45,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7643 states to 7643 states and 11760 transitions. [2021-11-22 15:35:45,810 INFO L78 Accepts]: Start accepts. Automaton has 7643 states and 11760 transitions. Word has length 250 [2021-11-22 15:35:45,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:45,810 INFO L470 AbstractCegarLoop]: Abstraction has 7643 states and 11760 transitions. [2021-11-22 15:35:45,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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) [2021-11-22 15:35:45,811 INFO L276 IsEmpty]: Start isEmpty. Operand 7643 states and 11760 transitions. [2021-11-22 15:35:45,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-22 15:35:45,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:45,818 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:45,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-22 15:35:45,818 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:45,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:45,819 INFO L85 PathProgramCache]: Analyzing trace with hash -32353271, now seen corresponding path program 1 times [2021-11-22 15:35:45,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:45,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000687729] [2021-11-22 15:35:45,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:45,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:45,877 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:35:45,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:45,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000687729] [2021-11-22 15:35:45,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000687729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:45,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:45,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:35:45,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968718997] [2021-11-22 15:35:45,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:45,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:35:45,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:45,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:35:45,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:45,881 INFO L87 Difference]: Start difference. First operand 7643 states and 11760 transitions. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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) [2021-11-22 15:35:47,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:47,538 INFO L93 Difference]: Finished difference Result 23160 states and 33726 transitions. [2021-11-22 15:35:47,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:35:47,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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 250 [2021-11-22 15:35:47,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:47,556 INFO L225 Difference]: With dead ends: 23160 [2021-11-22 15:35:47,556 INFO L226 Difference]: Without dead ends: 17692 [2021-11-22 15:35:47,564 INFO L932 BasicCegarLoop]: 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 [2021-11-22 15:35:47,565 INFO L933 BasicCegarLoop]: 8294 mSDtfsCounter, 6866 mSDsluCounter, 21839 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6866 SdHoareTripleChecker+Valid, 30133 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:47,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6866 Valid, 30133 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:35:47,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17692 states. [2021-11-22 15:35:48,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17692 to 7802. [2021-11-22 15:35:48,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7802 states, 7800 states have (on average 1.528076923076923) internal successors, (11919), 7801 states have internal predecessors, (11919), 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) [2021-11-22 15:35:48,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7802 states to 7802 states and 11919 transitions. [2021-11-22 15:35:48,148 INFO L78 Accepts]: Start accepts. Automaton has 7802 states and 11919 transitions. Word has length 250 [2021-11-22 15:35:48,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:48,148 INFO L470 AbstractCegarLoop]: Abstraction has 7802 states and 11919 transitions. [2021-11-22 15:35:48,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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) [2021-11-22 15:35:48,149 INFO L276 IsEmpty]: Start isEmpty. Operand 7802 states and 11919 transitions. [2021-11-22 15:35:48,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-22 15:35:48,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:48,154 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:48,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-22 15:35:48,154 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:48,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:48,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1951495565, now seen corresponding path program 1 times [2021-11-22 15:35:48,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:48,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793021359] [2021-11-22 15:35:48,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:48,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:48,208 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:35:48,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:48,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793021359] [2021-11-22 15:35:48,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793021359] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:48,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:48,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:35:48,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670109465] [2021-11-22 15:35:48,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:48,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:35:48,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:48,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:35:48,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:48,211 INFO L87 Difference]: Start difference. First operand 7802 states and 11919 transitions. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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) [2021-11-22 15:35:49,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:49,176 INFO L93 Difference]: Finished difference Result 15965 states and 23293 transitions. [2021-11-22 15:35:49,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:35:49,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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 250 [2021-11-22 15:35:49,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:49,185 INFO L225 Difference]: With dead ends: 15965 [2021-11-22 15:35:49,186 INFO L226 Difference]: Without dead ends: 10348 [2021-11-22 15:35:49,191 INFO L932 BasicCegarLoop]: 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 [2021-11-22 15:35:49,191 INFO L933 BasicCegarLoop]: 6139 mSDtfsCounter, 6193 mSDsluCounter, 14505 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6193 SdHoareTripleChecker+Valid, 20644 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:49,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6193 Valid, 20644 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:35:49,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10348 states. [2021-11-22 15:35:49,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10348 to 7814. [2021-11-22 15:35:49,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7814 states, 7812 states have (on average 1.5209933435739886) internal successors, (11882), 7813 states have internal predecessors, (11882), 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) [2021-11-22 15:35:49,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7814 states to 7814 states and 11882 transitions. [2021-11-22 15:35:49,780 INFO L78 Accepts]: Start accepts. Automaton has 7814 states and 11882 transitions. Word has length 250 [2021-11-22 15:35:49,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:49,780 INFO L470 AbstractCegarLoop]: Abstraction has 7814 states and 11882 transitions. [2021-11-22 15:35:49,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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) [2021-11-22 15:35:49,781 INFO L276 IsEmpty]: Start isEmpty. Operand 7814 states and 11882 transitions. [2021-11-22 15:35:49,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-22 15:35:49,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:49,788 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:49,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-22 15:35:49,789 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:49,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:49,790 INFO L85 PathProgramCache]: Analyzing trace with hash -891745775, now seen corresponding path program 1 times [2021-11-22 15:35:49,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:49,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243018304] [2021-11-22 15:35:49,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:49,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:49,851 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:35:49,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:49,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243018304] [2021-11-22 15:35:49,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243018304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:49,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:49,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:35:49,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522215134] [2021-11-22 15:35:49,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:49,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:35:49,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:49,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:35:49,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:49,855 INFO L87 Difference]: Start difference. First operand 7814 states and 11882 transitions. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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) [2021-11-22 15:35:51,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:51,677 INFO L93 Difference]: Finished difference Result 22897 states and 33039 transitions. [2021-11-22 15:35:51,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:35:51,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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 250 [2021-11-22 15:35:51,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:51,692 INFO L225 Difference]: With dead ends: 22897 [2021-11-22 15:35:51,692 INFO L226 Difference]: Without dead ends: 17275 [2021-11-22 15:35:51,696 INFO L932 BasicCegarLoop]: 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 [2021-11-22 15:35:51,697 INFO L933 BasicCegarLoop]: 7622 mSDtfsCounter, 6567 mSDsluCounter, 21315 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6567 SdHoareTripleChecker+Valid, 28937 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:51,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6567 Valid, 28937 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:35:51,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17275 states. [2021-11-22 15:35:52,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17275 to 7973. [2021-11-22 15:35:52,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7973 states, 7971 states have (on average 1.5106009283653243) internal successors, (12041), 7972 states have internal predecessors, (12041), 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) [2021-11-22 15:35:52,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7973 states to 7973 states and 12041 transitions. [2021-11-22 15:35:52,359 INFO L78 Accepts]: Start accepts. Automaton has 7973 states and 12041 transitions. Word has length 250 [2021-11-22 15:35:52,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:52,359 INFO L470 AbstractCegarLoop]: Abstraction has 7973 states and 12041 transitions. [2021-11-22 15:35:52,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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) [2021-11-22 15:35:52,359 INFO L276 IsEmpty]: Start isEmpty. Operand 7973 states and 12041 transitions. [2021-11-22 15:35:52,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-22 15:35:52,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:52,365 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:52,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-22 15:35:52,366 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:52,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:52,367 INFO L85 PathProgramCache]: Analyzing trace with hash 834359701, now seen corresponding path program 1 times [2021-11-22 15:35:52,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:52,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236270704] [2021-11-22 15:35:52,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:52,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:52,416 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:35:52,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:52,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236270704] [2021-11-22 15:35:52,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236270704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:52,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:52,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:35:52,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182410806] [2021-11-22 15:35:52,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:52,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:35:52,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:52,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:35:52,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:52,419 INFO L87 Difference]: Start difference. First operand 7973 states and 12041 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 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) [2021-11-22 15:35:53,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:53,654 INFO L93 Difference]: Finished difference Result 19020 states and 27290 transitions. [2021-11-22 15:35:53,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:35:53,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 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 250 [2021-11-22 15:35:53,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:53,669 INFO L225 Difference]: With dead ends: 19020 [2021-11-22 15:35:53,669 INFO L226 Difference]: Without dead ends: 13244 [2021-11-22 15:35:53,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:53,676 INFO L933 BasicCegarLoop]: 6164 mSDtfsCounter, 5953 mSDsluCounter, 1980 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5953 SdHoareTripleChecker+Valid, 8144 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:53,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5953 Valid, 8144 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:35:53,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13244 states. [2021-11-22 15:35:54,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13244 to 13234. [2021-11-22 15:35:54,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13234 states, 13232 states have (on average 1.4542775090689237) internal successors, (19243), 13233 states have internal predecessors, (19243), 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) [2021-11-22 15:35:54,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13234 states to 13234 states and 19243 transitions. [2021-11-22 15:35:54,949 INFO L78 Accepts]: Start accepts. Automaton has 13234 states and 19243 transitions. Word has length 250 [2021-11-22 15:35:54,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:54,950 INFO L470 AbstractCegarLoop]: Abstraction has 13234 states and 19243 transitions. [2021-11-22 15:35:54,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 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) [2021-11-22 15:35:54,950 INFO L276 IsEmpty]: Start isEmpty. Operand 13234 states and 19243 transitions. [2021-11-22 15:35:54,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-22 15:35:54,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:54,958 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:54,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-22 15:35:54,958 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:54,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:54,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1321657257, now seen corresponding path program 1 times [2021-11-22 15:35:54,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:54,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523963226] [2021-11-22 15:35:54,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:54,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:55,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:35:55,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:55,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523963226] [2021-11-22 15:35:55,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523963226] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:55,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:55,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:35:55,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586824870] [2021-11-22 15:35:55,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:55,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:35:55,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:55,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:35:55,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:55,019 INFO L87 Difference]: Start difference. First operand 13234 states and 19243 transitions. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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) [2021-11-22 15:35:57,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:57,529 INFO L93 Difference]: Finished difference Result 33353 states and 47135 transitions. [2021-11-22 15:35:57,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:35:57,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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 250 [2021-11-22 15:35:57,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:57,555 INFO L225 Difference]: With dead ends: 33353 [2021-11-22 15:35:57,555 INFO L226 Difference]: Without dead ends: 22320 [2021-11-22 15:35:57,565 INFO L932 BasicCegarLoop]: 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 [2021-11-22 15:35:57,566 INFO L933 BasicCegarLoop]: 6280 mSDtfsCounter, 6784 mSDsluCounter, 20724 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6784 SdHoareTripleChecker+Valid, 27004 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:57,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6784 Valid, 27004 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:35:57,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22320 states. [2021-11-22 15:35:58,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22320 to 13390. [2021-11-22 15:35:58,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13390 states, 13388 states have (on average 1.4453241708993128) internal successors, (19350), 13389 states have internal predecessors, (19350), 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) [2021-11-22 15:35:58,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13390 states to 13390 states and 19350 transitions. [2021-11-22 15:35:58,956 INFO L78 Accepts]: Start accepts. Automaton has 13390 states and 19350 transitions. Word has length 250 [2021-11-22 15:35:58,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:58,957 INFO L470 AbstractCegarLoop]: Abstraction has 13390 states and 19350 transitions. [2021-11-22 15:35:58,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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) [2021-11-22 15:35:58,957 INFO L276 IsEmpty]: Start isEmpty. Operand 13390 states and 19350 transitions. [2021-11-22 15:35:58,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-22 15:35:58,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:58,965 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:58,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-22 15:35:58,966 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:58,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:58,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1664636635, now seen corresponding path program 1 times [2021-11-22 15:35:58,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:58,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159294967] [2021-11-22 15:35:58,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:58,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:59,039 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:35:59,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:59,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159294967] [2021-11-22 15:35:59,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159294967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:59,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:59,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:35:59,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193263849] [2021-11-22 15:35:59,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:59,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:35:59,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:59,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:35:59,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:59,042 INFO L87 Difference]: Start difference. First operand 13390 states and 19350 transitions. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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) [2021-11-22 15:36:02,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:36:02,419 INFO L93 Difference]: Finished difference Result 41695 states and 58425 transitions. [2021-11-22 15:36:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:36:02,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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 250 [2021-11-22 15:36:02,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:36:02,451 INFO L225 Difference]: With dead ends: 41695 [2021-11-22 15:36:02,451 INFO L226 Difference]: Without dead ends: 30513 [2021-11-22 15:36:02,462 INFO L932 BasicCegarLoop]: 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 [2021-11-22 15:36:02,463 INFO L933 BasicCegarLoop]: 7209 mSDtfsCounter, 6167 mSDsluCounter, 20644 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6167 SdHoareTripleChecker+Valid, 27853 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:36:02,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6167 Valid, 27853 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:36:02,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30513 states. [2021-11-22 15:36:04,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30513 to 13693. [2021-11-22 15:36:04,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13693 states, 13691 states have (on average 1.4354685559856841) internal successors, (19653), 13692 states have internal predecessors, (19653), 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) [2021-11-22 15:36:04,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13693 states to 13693 states and 19653 transitions. [2021-11-22 15:36:04,172 INFO L78 Accepts]: Start accepts. Automaton has 13693 states and 19653 transitions. Word has length 250 [2021-11-22 15:36:04,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:36:04,173 INFO L470 AbstractCegarLoop]: Abstraction has 13693 states and 19653 transitions. [2021-11-22 15:36:04,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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) [2021-11-22 15:36:04,173 INFO L276 IsEmpty]: Start isEmpty. Operand 13693 states and 19653 transitions. [2021-11-22 15:36:04,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-22 15:36:04,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:36:04,179 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:36:04,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-22 15:36:04,180 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:36:04,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:36:04,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2102936611, now seen corresponding path program 1 times [2021-11-22 15:36:04,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:36:04,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259240865] [2021-11-22 15:36:04,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:36:04,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:36:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:36:04,246 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:36:04,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:36:04,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259240865] [2021-11-22 15:36:04,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259240865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:36:04,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:36:04,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:36:04,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807827703] [2021-11-22 15:36:04,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:36:04,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:36:04,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:36:04,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:36:04,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:36:04,250 INFO L87 Difference]: Start difference. First operand 13693 states and 19653 transitions. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 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) [2021-11-22 15:36:08,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:36:08,432 INFO L93 Difference]: Finished difference Result 41388 states and 57135 transitions. [2021-11-22 15:36:08,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:36:08,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 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 250 [2021-11-22 15:36:08,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:36:08,468 INFO L225 Difference]: With dead ends: 41388 [2021-11-22 15:36:08,468 INFO L226 Difference]: Without dead ends: 29908 [2021-11-22 15:36:08,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:36:08,478 INFO L933 BasicCegarLoop]: 6201 mSDtfsCounter, 13725 mSDsluCounter, 5251 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13725 SdHoareTripleChecker+Valid, 11452 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:36:08,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13725 Valid, 11452 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:36:08,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29908 states. [2021-11-22 15:36:11,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29908 to 24212. [2021-11-22 15:36:11,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24212 states, 24210 states have (on average 1.3958694754233787) internal successors, (33794), 24211 states have internal predecessors, (33794), 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) [2021-11-22 15:36:11,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24212 states to 24212 states and 33794 transitions. [2021-11-22 15:36:11,944 INFO L78 Accepts]: Start accepts. Automaton has 24212 states and 33794 transitions. Word has length 250 [2021-11-22 15:36:11,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:36:11,945 INFO L470 AbstractCegarLoop]: Abstraction has 24212 states and 33794 transitions. [2021-11-22 15:36:11,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 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) [2021-11-22 15:36:11,945 INFO L276 IsEmpty]: Start isEmpty. Operand 24212 states and 33794 transitions. [2021-11-22 15:36:11,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-22 15:36:11,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:36:11,957 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:36:11,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-22 15:36:11,958 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:36:11,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:36:11,959 INFO L85 PathProgramCache]: Analyzing trace with hash 2100294110, now seen corresponding path program 1 times [2021-11-22 15:36:11,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:36:11,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876253716] [2021-11-22 15:36:11,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:36:11,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:36:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:36:12,036 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:36:12,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:36:12,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876253716] [2021-11-22 15:36:12,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876253716] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:36:12,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:36:12,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:36:12,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24420211] [2021-11-22 15:36:12,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:36:12,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:36:12,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:36:12,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:36:12,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:36:12,040 INFO L87 Difference]: Start difference. First operand 24212 states and 33794 transitions. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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) [2021-11-22 15:36:17,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:36:17,921 INFO L93 Difference]: Finished difference Result 62791 states and 86391 transitions. [2021-11-22 15:36:17,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:36:17,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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 250 [2021-11-22 15:36:17,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:36:17,966 INFO L225 Difference]: With dead ends: 62791 [2021-11-22 15:36:17,966 INFO L226 Difference]: Without dead ends: 40796 [2021-11-22 15:36:17,981 INFO L932 BasicCegarLoop]: 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 [2021-11-22 15:36:17,982 INFO L933 BasicCegarLoop]: 6238 mSDtfsCounter, 6183 mSDsluCounter, 19722 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6183 SdHoareTripleChecker+Valid, 25960 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:36:17,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6183 Valid, 25960 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:36:18,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40796 states. [2021-11-22 15:36:22,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40796 to 24512. [2021-11-22 15:36:22,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24512 states, 24510 states have (on average 1.3872297021623827) internal successors, (34001), 24511 states have internal predecessors, (34001), 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) [2021-11-22 15:36:22,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24512 states to 24512 states and 34001 transitions. [2021-11-22 15:36:22,359 INFO L78 Accepts]: Start accepts. Automaton has 24512 states and 34001 transitions. Word has length 250 [2021-11-22 15:36:22,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:36:22,359 INFO L470 AbstractCegarLoop]: Abstraction has 24512 states and 34001 transitions. [2021-11-22 15:36:22,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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) [2021-11-22 15:36:22,360 INFO L276 IsEmpty]: Start isEmpty. Operand 24512 states and 34001 transitions. [2021-11-22 15:36:22,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-22 15:36:22,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:36:22,373 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:36:22,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-22 15:36:22,373 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:36:22,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:36:22,374 INFO L85 PathProgramCache]: Analyzing trace with hash 692568160, now seen corresponding path program 1 times [2021-11-22 15:36:22,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:36:22,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240731323] [2021-11-22 15:36:22,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:36:22,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:36:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:36:22,453 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:36:22,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:36:22,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240731323] [2021-11-22 15:36:22,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240731323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:36:22,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:36:22,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:36:22,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333337326] [2021-11-22 15:36:22,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:36:22,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:36:22,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:36:22,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:36:22,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:36:22,458 INFO L87 Difference]: Start difference. First operand 24512 states and 34001 transitions. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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) [2021-11-22 15:36:27,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:36:27,504 INFO L93 Difference]: Finished difference Result 56016 states and 75909 transitions. [2021-11-22 15:36:27,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:36:27,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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 250 [2021-11-22 15:36:27,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:36:27,541 INFO L225 Difference]: With dead ends: 56016 [2021-11-22 15:36:27,541 INFO L226 Difference]: Without dead ends: 33728 [2021-11-22 15:36:27,558 INFO L932 BasicCegarLoop]: 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 [2021-11-22 15:36:27,559 INFO L933 BasicCegarLoop]: 6117 mSDtfsCounter, 5284 mSDsluCounter, 16306 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5284 SdHoareTripleChecker+Valid, 22423 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:36:27,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5284 Valid, 22423 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:36:27,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33728 states. [2021-11-22 15:36:31,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33728 to 24536. [2021-11-22 15:36:31,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24536 states, 24534 states have (on average 1.3793103448275863) internal successors, (33840), 24535 states have internal predecessors, (33840), 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) [2021-11-22 15:36:31,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24536 states to 24536 states and 33840 transitions. [2021-11-22 15:36:31,206 INFO L78 Accepts]: Start accepts. Automaton has 24536 states and 33840 transitions. Word has length 250 [2021-11-22 15:36:31,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:36:31,207 INFO L470 AbstractCegarLoop]: Abstraction has 24536 states and 33840 transitions. [2021-11-22 15:36:31,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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) [2021-11-22 15:36:31,207 INFO L276 IsEmpty]: Start isEmpty. Operand 24536 states and 33840 transitions. [2021-11-22 15:36:31,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-22 15:36:31,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:36:31,216 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:36:31,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-22 15:36:31,217 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:36:31,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:36:31,217 INFO L85 PathProgramCache]: Analyzing trace with hash 67851236, now seen corresponding path program 1 times [2021-11-22 15:36:31,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:36:31,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617658327] [2021-11-22 15:36:31,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:36:31,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:36:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:36:31,288 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:36:31,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:36:31,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617658327] [2021-11-22 15:36:31,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617658327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:36:31,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:36:31,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:36:31,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048072435] [2021-11-22 15:36:31,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:36:31,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:36:31,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:36:31,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:36:31,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:36:31,291 INFO L87 Difference]: Start difference. First operand 24536 states and 33840 transitions. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 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) [2021-11-22 15:36:39,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:36:39,971 INFO L93 Difference]: Finished difference Result 78080 states and 105076 transitions. [2021-11-22 15:36:39,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:36:39,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 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 250 [2021-11-22 15:36:39,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:36:40,040 INFO L225 Difference]: With dead ends: 78080 [2021-11-22 15:36:40,040 INFO L226 Difference]: Without dead ends: 55777 [2021-11-22 15:36:40,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:36:40,057 INFO L933 BasicCegarLoop]: 6153 mSDtfsCounter, 13634 mSDsluCounter, 5222 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13634 SdHoareTripleChecker+Valid, 11375 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:36:40,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13634 Valid, 11375 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:36:40,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55777 states. [2021-11-22 15:36:46,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55777 to 44999. [2021-11-22 15:36:46,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44999 states, 44997 states have (on average 1.3535346800897838) internal successors, (60905), 44998 states have internal predecessors, (60905), 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) [2021-11-22 15:36:46,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44999 states to 44999 states and 60905 transitions. [2021-11-22 15:36:46,924 INFO L78 Accepts]: Start accepts. Automaton has 44999 states and 60905 transitions. Word has length 250 [2021-11-22 15:36:46,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:36:46,925 INFO L470 AbstractCegarLoop]: Abstraction has 44999 states and 60905 transitions. [2021-11-22 15:36:46,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 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) [2021-11-22 15:36:46,925 INFO L276 IsEmpty]: Start isEmpty. Operand 44999 states and 60905 transitions. [2021-11-22 15:36:46,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-22 15:36:46,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:36:46,942 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:36:46,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-22 15:36:46,942 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:36:46,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:36:46,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1563754970, now seen corresponding path program 1 times [2021-11-22 15:36:46,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:36:46,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915954692] [2021-11-22 15:36:46,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:36:46,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:36:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:36:47,007 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:36:47,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:36:47,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915954692] [2021-11-22 15:36:47,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915954692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:36:47,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:36:47,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:36:47,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911370215] [2021-11-22 15:36:47,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:36:47,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:36:47,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:36:47,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:36:47,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:36:47,011 INFO L87 Difference]: Start difference. First operand 44999 states and 60905 transitions. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 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)