./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem18_label50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem18_label50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc --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 2860c4517fecc40ae408a746c354ae76653cd3eedc93173f87dfd23f49daad5e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:04:16,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:04:16,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:04:16,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:04:16,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:04:16,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:04:16,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:04:16,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:04:16,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:04:16,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:04:16,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:04:16,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:04:16,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:04:16,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:04:16,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:04:16,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:04:16,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:04:16,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:04:16,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:04:16,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:04:16,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:04:16,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:04:16,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:04:16,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:04:16,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:04:16,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:04:16,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:04:16,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:04:16,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:04:16,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:04:16,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:04:16,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:04:16,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:04:16,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:04:16,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:04:16,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:04:16,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:04:16,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:04:16,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:04:16,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:04:16,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:04:16,736 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:04:16,781 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:04:16,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:04:16,782 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:04:16,782 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:04:16,783 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:04:16,784 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:04:16,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:04:16,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:04:16,785 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:04:16,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:04:16,786 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:04:16,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:04:16,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:04:16,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:04:16,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:04:16,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:04:16,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:04:16,788 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:04:16,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:04:16,789 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:04:16,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:04:16,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:04:16,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:04:16,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:04:16,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:04:16,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:04:16,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:04:16,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:04:16,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:04:16,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:04:16,791 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:04:16,792 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:04:16,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:04:16,792 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_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2860c4517fecc40ae408a746c354ae76653cd3eedc93173f87dfd23f49daad5e [2022-11-02 21:04:17,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:04:17,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:04:17,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:04:17,208 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:04:17,209 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:04:17,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/eca-rers2012/Problem18_label50.c [2022-11-02 21:04:17,290 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/data/26586fd68/299b969aa61f469aa210c58af7b8c4c6/FLAG626adb0b2 [2022-11-02 21:04:18,198 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:04:18,199 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/sv-benchmarks/c/eca-rers2012/Problem18_label50.c [2022-11-02 21:04:18,249 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/data/26586fd68/299b969aa61f469aa210c58af7b8c4c6/FLAG626adb0b2 [2022-11-02 21:04:18,716 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/data/26586fd68/299b969aa61f469aa210c58af7b8c4c6 [2022-11-02 21:04:18,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:04:18,721 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:04:18,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:04:18,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:04:18,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:04:18,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:04:18" (1/1) ... [2022-11-02 21:04:18,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31a5f69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:18, skipping insertion in model container [2022-11-02 21:04:18,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:04:18" (1/1) ... [2022-11-02 21:04:18,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:04:18,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:04:19,169 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_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/sv-benchmarks/c/eca-rers2012/Problem18_label50.c[6561,6574] [2022-11-02 21:04:20,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:04:20,139 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:04:20,185 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_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/sv-benchmarks/c/eca-rers2012/Problem18_label50.c[6561,6574] [2022-11-02 21:04:20,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:04:20,798 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:04:20,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:20 WrapperNode [2022-11-02 21:04:20,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:04:20,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:04:20,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:04:20,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:04:20,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:20" (1/1) ... [2022-11-02 21:04:20,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:20" (1/1) ... [2022-11-02 21:04:21,158 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4132 [2022-11-02 21:04:21,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:04:21,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:04:21,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:04:21,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:04:21,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:20" (1/1) ... [2022-11-02 21:04:21,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:20" (1/1) ... [2022-11-02 21:04:21,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:20" (1/1) ... [2022-11-02 21:04:21,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:20" (1/1) ... [2022-11-02 21:04:21,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:20" (1/1) ... [2022-11-02 21:04:21,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:20" (1/1) ... [2022-11-02 21:04:21,480 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:20" (1/1) ... [2022-11-02 21:04:21,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:20" (1/1) ... [2022-11-02 21:04:21,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:04:21,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:04:21,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:04:21,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:04:21,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:20" (1/1) ... [2022-11-02 21:04:21,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:04:21,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:21,610 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:04:21,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:04:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:04:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:04:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:04:21,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:04:21,764 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:04:21,766 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:04:25,978 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:04:25,991 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:04:25,991 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:04:25,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:04:25 BoogieIcfgContainer [2022-11-02 21:04:25,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:04:25,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:04:25,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:04:26,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:04:26,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:04:18" (1/3) ... [2022-11-02 21:04:26,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b6992f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:04:26, skipping insertion in model container [2022-11-02 21:04:26,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:20" (2/3) ... [2022-11-02 21:04:26,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b6992f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:04:26, skipping insertion in model container [2022-11-02 21:04:26,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:04:25" (3/3) ... [2022-11-02 21:04:26,005 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label50.c [2022-11-02 21:04:26,026 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:04:26,027 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:04:26,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:04:26,109 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5cacde59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:04:26,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:04:26,118 INFO L276 IsEmpty]: Start isEmpty. Operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:26,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-02 21:04:26,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:26,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:26,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:26,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:26,137 INFO L85 PathProgramCache]: Analyzing trace with hash -696204111, now seen corresponding path program 1 times [2022-11-02 21:04:26,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:26,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23587436] [2022-11-02 21:04:26,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:26,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:26,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:26,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:26,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23587436] [2022-11-02 21:04:26,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23587436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:26,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:26,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:04:26,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317450122] [2022-11-02 21:04:26,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:26,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:26,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:26,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:26,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:26,629 INFO L87 Difference]: Start difference. First operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 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 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:31,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:31,043 INFO L93 Difference]: Finished difference Result 2221 states and 4282 transitions. [2022-11-02 21:04:31,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:31,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-02 21:04:31,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:31,068 INFO L225 Difference]: With dead ends: 2221 [2022-11-02 21:04:31,068 INFO L226 Difference]: Without dead ends: 1384 [2022-11-02 21:04:31,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:31,078 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 732 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:31,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 487 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-02 21:04:31,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-11-02 21:04:31,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2022-11-02 21:04:31,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 1.5994215473608098) internal successors, (2212), 1383 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:31,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2212 transitions. [2022-11-02 21:04:31,210 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2212 transitions. Word has length 63 [2022-11-02 21:04:31,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:31,211 INFO L495 AbstractCegarLoop]: Abstraction has 1384 states and 2212 transitions. [2022-11-02 21:04:31,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:31,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2212 transitions. [2022-11-02 21:04:31,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-02 21:04:31,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:31,216 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:31,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:04:31,217 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:31,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:31,218 INFO L85 PathProgramCache]: Analyzing trace with hash 928891202, now seen corresponding path program 1 times [2022-11-02 21:04:31,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:31,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79545374] [2022-11-02 21:04:31,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:31,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:31,464 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:31,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:31,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79545374] [2022-11-02 21:04:31,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79545374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:31,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:31,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:04:31,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14577132] [2022-11-02 21:04:31,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:31,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:31,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:31,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:31,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:31,473 INFO L87 Difference]: Start difference. First operand 1384 states and 2212 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:34,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:34,892 INFO L93 Difference]: Finished difference Result 4146 states and 6631 transitions. [2022-11-02 21:04:34,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:34,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2022-11-02 21:04:34,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:34,909 INFO L225 Difference]: With dead ends: 4146 [2022-11-02 21:04:34,909 INFO L226 Difference]: Without dead ends: 2764 [2022-11-02 21:04:34,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:34,914 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 714 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:34,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 529 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-02 21:04:34,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2022-11-02 21:04:34,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2764. [2022-11-02 21:04:34,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2763 states have (on average 1.3503438291711907) internal successors, (3731), 2763 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:34,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3731 transitions. [2022-11-02 21:04:34,983 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3731 transitions. Word has length 128 [2022-11-02 21:04:34,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:34,984 INFO L495 AbstractCegarLoop]: Abstraction has 2764 states and 3731 transitions. [2022-11-02 21:04:34,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:34,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3731 transitions. [2022-11-02 21:04:34,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-11-02 21:04:34,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:34,993 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 21:04:34,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:04:34,994 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:34,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:34,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1882009590, now seen corresponding path program 1 times [2022-11-02 21:04:34,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:34,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916231151] [2022-11-02 21:04:34,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:34,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:35,828 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-02 21:04:35,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:35,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916231151] [2022-11-02 21:04:35,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916231151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:35,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:35,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:04:35,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134508615] [2022-11-02 21:04:35,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:35,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:35,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:35,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:35,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:35,831 INFO L87 Difference]: Start difference. First operand 2764 states and 3731 transitions. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:40,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:40,919 INFO L93 Difference]: Finished difference Result 7596 states and 9794 transitions. [2022-11-02 21:04:40,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:04:40,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 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 246 [2022-11-02 21:04:40,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:40,936 INFO L225 Difference]: With dead ends: 7596 [2022-11-02 21:04:40,937 INFO L226 Difference]: Without dead ends: 4834 [2022-11-02 21:04:40,941 INFO L412 NwaCegarLoop]: 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 [2022-11-02 21:04:40,942 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 1872 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4348 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 4466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 4348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:40,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 641 Invalid, 4466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 4348 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-02 21:04:40,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4834 states. [2022-11-02 21:04:41,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4834 to 4144. [2022-11-02 21:04:41,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4144 states, 4143 states have (on average 1.2698527636978034) internal successors, (5261), 4143 states have internal predecessors, (5261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:41,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4144 states to 4144 states and 5261 transitions. [2022-11-02 21:04:41,054 INFO L78 Accepts]: Start accepts. Automaton has 4144 states and 5261 transitions. Word has length 246 [2022-11-02 21:04:41,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:41,055 INFO L495 AbstractCegarLoop]: Abstraction has 4144 states and 5261 transitions. [2022-11-02 21:04:41,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:41,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4144 states and 5261 transitions. [2022-11-02 21:04:41,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-11-02 21:04:41,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:41,067 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:41,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:04:41,068 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:41,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:41,069 INFO L85 PathProgramCache]: Analyzing trace with hash -906042740, now seen corresponding path program 1 times [2022-11-02 21:04:41,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:41,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513968521] [2022-11-02 21:04:41,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:41,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:41,532 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:41,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:41,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513968521] [2022-11-02 21:04:41,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513968521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:41,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:41,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:04:41,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531947624] [2022-11-02 21:04:41,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:41,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:41,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:41,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:41,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:41,536 INFO L87 Difference]: Start difference. First operand 4144 states and 5261 transitions. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:44,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:44,921 INFO L93 Difference]: Finished difference Result 12426 states and 15778 transitions. [2022-11-02 21:04:44,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:44,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 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 362 [2022-11-02 21:04:44,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:44,948 INFO L225 Difference]: With dead ends: 12426 [2022-11-02 21:04:44,948 INFO L226 Difference]: Without dead ends: 8284 [2022-11-02 21:04:44,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:44,954 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 643 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2345 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 2791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:44,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 824 Invalid, 2791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2345 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-02 21:04:44,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2022-11-02 21:04:45,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 8284. [2022-11-02 21:04:45,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8284 states, 8283 states have (on average 1.2472534106000241) internal successors, (10331), 8283 states have internal predecessors, (10331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:45,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8284 states to 8284 states and 10331 transitions. [2022-11-02 21:04:45,116 INFO L78 Accepts]: Start accepts. Automaton has 8284 states and 10331 transitions. Word has length 362 [2022-11-02 21:04:45,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:45,119 INFO L495 AbstractCegarLoop]: Abstraction has 8284 states and 10331 transitions. [2022-11-02 21:04:45,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:45,119 INFO L276 IsEmpty]: Start isEmpty. Operand 8284 states and 10331 transitions. [2022-11-02 21:04:45,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2022-11-02 21:04:45,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:45,126 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:45,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:04:45,127 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:45,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:45,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1772964099, now seen corresponding path program 1 times [2022-11-02 21:04:45,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:45,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464910599] [2022-11-02 21:04:45,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:45,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 21:04:45,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:45,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464910599] [2022-11-02 21:04:45,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464910599] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:45,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051472897] [2022-11-02 21:04:45,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:45,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:45,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:45,750 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:45,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:04:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:45,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:04:45,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:46,506 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 21:04:46,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:46,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051472897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:46,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:04:46,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-11-02 21:04:46,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939373416] [2022-11-02 21:04:46,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:46,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:46,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:46,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:46,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:46,510 INFO L87 Difference]: Start difference. First operand 8284 states and 10331 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:49,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:49,930 INFO L93 Difference]: Finished difference Result 24156 states and 30160 transitions. [2022-11-02 21:04:49,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:49,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 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 369 [2022-11-02 21:04:49,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:50,004 INFO L225 Difference]: With dead ends: 24156 [2022-11-02 21:04:50,007 INFO L226 Difference]: Without dead ends: 15874 [2022-11-02 21:04:50,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:50,020 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 391 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2331 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 2788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 2331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:50,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 550 Invalid, 2788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 2331 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-02 21:04:50,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15874 states. [2022-11-02 21:04:50,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15874 to 12424. [2022-11-02 21:04:50,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12424 states, 12423 states have (on average 1.231023102310231) internal successors, (15293), 12423 states have internal predecessors, (15293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:50,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12424 states to 12424 states and 15293 transitions. [2022-11-02 21:04:50,309 INFO L78 Accepts]: Start accepts. Automaton has 12424 states and 15293 transitions. Word has length 369 [2022-11-02 21:04:50,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:50,312 INFO L495 AbstractCegarLoop]: Abstraction has 12424 states and 15293 transitions. [2022-11-02 21:04:50,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:50,313 INFO L276 IsEmpty]: Start isEmpty. Operand 12424 states and 15293 transitions. [2022-11-02 21:04:50,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-11-02 21:04:50,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:50,324 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:50,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:50,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:50,543 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:50,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:50,543 INFO L85 PathProgramCache]: Analyzing trace with hash -717153331, now seen corresponding path program 1 times [2022-11-02 21:04:50,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:50,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080517003] [2022-11-02 21:04:50,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:50,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:51,294 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:51,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:51,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080517003] [2022-11-02 21:04:51,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080517003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:51,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:51,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:04:51,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442988686] [2022-11-02 21:04:51,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:51,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:51,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:51,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:51,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:51,299 INFO L87 Difference]: Start difference. First operand 12424 states and 15293 transitions. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:54,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:54,481 INFO L93 Difference]: Finished difference Result 31056 states and 38078 transitions. [2022-11-02 21:04:54,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:54,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 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 455 [2022-11-02 21:04:54,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:54,528 INFO L225 Difference]: With dead ends: 31056 [2022-11-02 21:04:54,529 INFO L226 Difference]: Without dead ends: 18634 [2022-11-02 21:04:54,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:54,547 INFO L413 NwaCegarLoop]: 1070 mSDtfsCounter, 600 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2201 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 2555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 2201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:54,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 1077 Invalid, 2555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 2201 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-02 21:04:54,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18634 states. [2022-11-02 21:04:54,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18634 to 17944. [2022-11-02 21:04:54,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17944 states, 17943 states have (on average 1.1940589644986903) internal successors, (21425), 17943 states have internal predecessors, (21425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:54,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17944 states to 17944 states and 21425 transitions. [2022-11-02 21:04:54,885 INFO L78 Accepts]: Start accepts. Automaton has 17944 states and 21425 transitions. Word has length 455 [2022-11-02 21:04:54,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:54,886 INFO L495 AbstractCegarLoop]: Abstraction has 17944 states and 21425 transitions. [2022-11-02 21:04:54,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:54,886 INFO L276 IsEmpty]: Start isEmpty. Operand 17944 states and 21425 transitions. [2022-11-02 21:04:54,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2022-11-02 21:04:54,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:54,898 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:54,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:04:54,898 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:54,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:54,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1352129710, now seen corresponding path program 1 times [2022-11-02 21:04:54,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:54,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38073423] [2022-11-02 21:04:54,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:54,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:55,265 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-11-02 21:04:55,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:55,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38073423] [2022-11-02 21:04:55,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38073423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:55,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:55,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:04:55,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017320447] [2022-11-02 21:04:55,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:55,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:55,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:55,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:55,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:55,272 INFO L87 Difference]: Start difference. First operand 17944 states and 21425 transitions. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 2 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:58,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:58,246 INFO L93 Difference]: Finished difference Result 42786 states and 50792 transitions. [2022-11-02 21:04:58,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:58,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 2 states have internal predecessors, (364), 0 states have call successors, (0), 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 460 [2022-11-02 21:04:58,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:58,296 INFO L225 Difference]: With dead ends: 42786 [2022-11-02 21:04:58,296 INFO L226 Difference]: Without dead ends: 24844 [2022-11-02 21:04:58,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:58,309 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 499 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 2680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:58,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 109 Invalid, 2680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-02 21:04:58,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24844 states. [2022-11-02 21:04:58,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24844 to 24844. [2022-11-02 21:04:58,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24844 states, 24843 states have (on average 1.1503039085456668) internal successors, (28577), 24843 states have internal predecessors, (28577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:58,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24844 states to 24844 states and 28577 transitions. [2022-11-02 21:04:58,657 INFO L78 Accepts]: Start accepts. Automaton has 24844 states and 28577 transitions. Word has length 460 [2022-11-02 21:04:58,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:58,658 INFO L495 AbstractCegarLoop]: Abstraction has 24844 states and 28577 transitions. [2022-11-02 21:04:58,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 2 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:58,658 INFO L276 IsEmpty]: Start isEmpty. Operand 24844 states and 28577 transitions. [2022-11-02 21:04:58,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2022-11-02 21:04:58,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:58,669 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:58,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:04:58,670 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:58,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:58,671 INFO L85 PathProgramCache]: Analyzing trace with hash 610570492, now seen corresponding path program 1 times [2022-11-02 21:04:58,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:58,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689798221] [2022-11-02 21:04:58,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:58,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:59,015 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-02 21:04:59,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:59,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689798221] [2022-11-02 21:04:59,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689798221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:59,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:59,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:04:59,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502671892] [2022-11-02 21:04:59,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:59,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:59,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:59,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:59,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:59,019 INFO L87 Difference]: Start difference. First operand 24844 states and 28577 transitions. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:02,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:02,324 INFO L93 Difference]: Finished difference Result 53826 states and 62398 transitions. [2022-11-02 21:05:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:05:02,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 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 462 [2022-11-02 21:05:02,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:02,371 INFO L225 Difference]: With dead ends: 53826 [2022-11-02 21:05:02,371 INFO L226 Difference]: Without dead ends: 28984 [2022-11-02 21:05:02,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:05:02,391 INFO L413 NwaCegarLoop]: 1292 mSDtfsCounter, 641 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1958 mSolverCounterSat, 755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 2713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 755 IncrementalHoareTripleChecker+Valid, 1958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:02,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 1299 Invalid, 2713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [755 Valid, 1958 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-02 21:05:02,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28984 states. [2022-11-02 21:05:02,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28984 to 27604. [2022-11-02 21:05:02,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27604 states, 27603 states have (on average 1.143317755316451) internal successors, (31559), 27603 states have internal predecessors, (31559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:02,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27604 states to 27604 states and 31559 transitions. [2022-11-02 21:05:02,761 INFO L78 Accepts]: Start accepts. Automaton has 27604 states and 31559 transitions. Word has length 462 [2022-11-02 21:05:02,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:02,763 INFO L495 AbstractCegarLoop]: Abstraction has 27604 states and 31559 transitions. [2022-11-02 21:05:02,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:02,764 INFO L276 IsEmpty]: Start isEmpty. Operand 27604 states and 31559 transitions. [2022-11-02 21:05:02,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2022-11-02 21:05:02,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:02,782 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:02,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:05:02,782 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:02,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:02,783 INFO L85 PathProgramCache]: Analyzing trace with hash 842142857, now seen corresponding path program 1 times [2022-11-02 21:05:02,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:02,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654802727] [2022-11-02 21:05:02,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:02,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:03,241 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2022-11-02 21:05:03,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:03,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654802727] [2022-11-02 21:05:03,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654802727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:03,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:03,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:05:03,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971922714] [2022-11-02 21:05:03,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:03,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:05:03,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:03,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:05:03,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:05:03,245 INFO L87 Difference]: Start difference. First operand 27604 states and 31559 transitions. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:06,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:06,532 INFO L93 Difference]: Finished difference Result 64176 states and 74122 transitions. [2022-11-02 21:05:06,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:05:06,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 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 552 [2022-11-02 21:05:06,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:06,581 INFO L225 Difference]: With dead ends: 64176 [2022-11-02 21:05:06,582 INFO L226 Difference]: Without dead ends: 33124 [2022-11-02 21:05:06,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:05:06,605 INFO L413 NwaCegarLoop]: 1311 mSDtfsCounter, 631 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2146 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 2146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:06,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 1318 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 2146 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-02 21:05:06,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33124 states. [2022-11-02 21:05:07,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33124 to 32434. [2022-11-02 21:05:07,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32434 states, 32433 states have (on average 1.1341534856473345) internal successors, (36784), 32433 states have internal predecessors, (36784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:07,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32434 states to 32434 states and 36784 transitions. [2022-11-02 21:05:07,385 INFO L78 Accepts]: Start accepts. Automaton has 32434 states and 36784 transitions. Word has length 552 [2022-11-02 21:05:07,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:07,387 INFO L495 AbstractCegarLoop]: Abstraction has 32434 states and 36784 transitions. [2022-11-02 21:05:07,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:07,387 INFO L276 IsEmpty]: Start isEmpty. Operand 32434 states and 36784 transitions. [2022-11-02 21:05:07,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2022-11-02 21:05:07,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:07,402 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:07,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:05:07,403 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:07,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:07,404 INFO L85 PathProgramCache]: Analyzing trace with hash -985952299, now seen corresponding path program 1 times [2022-11-02 21:05:07,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:07,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190187443] [2022-11-02 21:05:07,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:07,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:08,134 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 538 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2022-11-02 21:05:08,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:08,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190187443] [2022-11-02 21:05:08,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190187443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:08,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:08,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:05:08,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235767495] [2022-11-02 21:05:08,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:08,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:08,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:08,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:08,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:08,137 INFO L87 Difference]: Start difference. First operand 32434 states and 36784 transitions. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:11,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:11,367 INFO L93 Difference]: Finished difference Result 66299 states and 75023 transitions. [2022-11-02 21:05:11,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:05:11,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 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 573 [2022-11-02 21:05:11,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:11,405 INFO L225 Difference]: With dead ends: 66299 [2022-11-02 21:05:11,405 INFO L226 Difference]: Without dead ends: 34504 [2022-11-02 21:05:11,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:11,425 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 515 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3016 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 3016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:11,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 629 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 3016 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-02 21:05:11,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34504 states. [2022-11-02 21:05:11,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34504 to 34504. [2022-11-02 21:05:11,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34504 states, 34503 states have (on average 1.0967162275744138) internal successors, (37840), 34503 states have internal predecessors, (37840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:11,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34504 states to 34504 states and 37840 transitions. [2022-11-02 21:05:11,847 INFO L78 Accepts]: Start accepts. Automaton has 34504 states and 37840 transitions. Word has length 573 [2022-11-02 21:05:11,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:11,847 INFO L495 AbstractCegarLoop]: Abstraction has 34504 states and 37840 transitions. [2022-11-02 21:05:11,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:11,847 INFO L276 IsEmpty]: Start isEmpty. Operand 34504 states and 37840 transitions. [2022-11-02 21:05:11,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2022-11-02 21:05:11,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:11,860 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:11,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:05:11,861 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:11,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:11,861 INFO L85 PathProgramCache]: Analyzing trace with hash 558221884, now seen corresponding path program 1 times [2022-11-02 21:05:11,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:11,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969512196] [2022-11-02 21:05:11,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:11,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:13,033 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 496 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-02 21:05:13,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:13,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969512196] [2022-11-02 21:05:13,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969512196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:13,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:13,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:05:13,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338955580] [2022-11-02 21:05:13,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:13,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:13,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:13,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:13,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:13,037 INFO L87 Difference]: Start difference. First operand 34504 states and 37840 transitions. Second operand has 4 states, 4 states have (on average 142.0) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:17,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:17,068 INFO L93 Difference]: Finished difference Result 69006 states and 75703 transitions. [2022-11-02 21:05:17,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:05:17,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 142.0) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 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 628 [2022-11-02 21:05:17,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:17,214 INFO L225 Difference]: With dead ends: 69006 [2022-11-02 21:05:17,214 INFO L226 Difference]: Without dead ends: 35194 [2022-11-02 21:05:17,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:17,225 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 1022 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3096 mSolverCounterSat, 685 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 3781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 3096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:17,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 97 Invalid, 3781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [685 Valid, 3096 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-02 21:05:17,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35194 states. [2022-11-02 21:05:17,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35194 to 35194. [2022-11-02 21:05:17,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35194 states, 35193 states have (on average 1.07848151621061) internal successors, (37955), 35193 states have internal predecessors, (37955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:17,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35194 states to 35194 states and 37955 transitions. [2022-11-02 21:05:17,595 INFO L78 Accepts]: Start accepts. Automaton has 35194 states and 37955 transitions. Word has length 628 [2022-11-02 21:05:17,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:17,596 INFO L495 AbstractCegarLoop]: Abstraction has 35194 states and 37955 transitions. [2022-11-02 21:05:17,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.0) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:17,596 INFO L276 IsEmpty]: Start isEmpty. Operand 35194 states and 37955 transitions. [2022-11-02 21:05:17,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1149 [2022-11-02 21:05:17,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:17,615 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:17,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:05:17,616 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:17,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:17,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1917091075, now seen corresponding path program 1 times [2022-11-02 21:05:17,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:17,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077057177] [2022-11-02 21:05:17,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:17,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 839 trivial. 0 not checked. [2022-11-02 21:05:20,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:20,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077057177] [2022-11-02 21:05:20,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077057177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:20,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:20,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:05:20,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343572221] [2022-11-02 21:05:20,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:20,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:05:20,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:20,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:05:20,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:05:20,544 INFO L87 Difference]: Start difference. First operand 35194 states and 37955 transitions. Second operand has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:23,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:23,352 INFO L93 Difference]: Finished difference Result 77286 states and 83940 transitions. [2022-11-02 21:05:23,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:05:23,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 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 1148 [2022-11-02 21:05:23,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:23,389 INFO L225 Difference]: With dead ends: 77286 [2022-11-02 21:05:23,389 INFO L226 Difference]: Without dead ends: 42784 [2022-11-02 21:05:23,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:05:23,409 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 698 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1780 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 2438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 1780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:23,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 96 Invalid, 2438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 1780 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-02 21:05:23,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42784 states. [2022-11-02 21:05:23,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42784 to 39334. [2022-11-02 21:05:23,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39334 states, 39333 states have (on average 1.0903058500495766) internal successors, (42885), 39333 states have internal predecessors, (42885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:23,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39334 states to 39334 states and 42885 transitions. [2022-11-02 21:05:23,815 INFO L78 Accepts]: Start accepts. Automaton has 39334 states and 42885 transitions. Word has length 1148 [2022-11-02 21:05:23,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:23,816 INFO L495 AbstractCegarLoop]: Abstraction has 39334 states and 42885 transitions. [2022-11-02 21:05:23,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:23,816 INFO L276 IsEmpty]: Start isEmpty. Operand 39334 states and 42885 transitions. [2022-11-02 21:05:23,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1212 [2022-11-02 21:05:23,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:23,836 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:23,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 21:05:23,836 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:23,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:23,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1545847230, now seen corresponding path program 1 times [2022-11-02 21:05:23,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:23,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714965297] [2022-11-02 21:05:23,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:23,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:25,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1293 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2022-11-02 21:05:25,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:25,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714965297] [2022-11-02 21:05:25,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714965297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:25,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:25,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:05:25,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25028428] [2022-11-02 21:05:25,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:25,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:05:25,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:25,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:05:25,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:05:25,902 INFO L87 Difference]: Start difference. First operand 39334 states and 42885 transitions. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:28,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:28,290 INFO L93 Difference]: Finished difference Result 77976 states and 85077 transitions. [2022-11-02 21:05:28,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:05:28,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 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 1211 [2022-11-02 21:05:28,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:28,324 INFO L225 Difference]: With dead ends: 77976 [2022-11-02 21:05:28,324 INFO L226 Difference]: Without dead ends: 39334 [2022-11-02 21:05:28,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:05:28,338 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 734 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 2143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:28,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 780 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1952 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 21:05:28,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39334 states. [2022-11-02 21:05:28,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39334 to 39334. [2022-11-02 21:05:28,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39334 states, 39333 states have (on average 1.0779498131340095) internal successors, (42399), 39333 states have internal predecessors, (42399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:28,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39334 states to 39334 states and 42399 transitions. [2022-11-02 21:05:28,666 INFO L78 Accepts]: Start accepts. Automaton has 39334 states and 42399 transitions. Word has length 1211 [2022-11-02 21:05:28,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:28,666 INFO L495 AbstractCegarLoop]: Abstraction has 39334 states and 42399 transitions. [2022-11-02 21:05:28,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:28,667 INFO L276 IsEmpty]: Start isEmpty. Operand 39334 states and 42399 transitions. [2022-11-02 21:05:28,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1511 [2022-11-02 21:05:28,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:28,701 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:28,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 21:05:28,702 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:28,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:28,703 INFO L85 PathProgramCache]: Analyzing trace with hash 286545695, now seen corresponding path program 1 times [2022-11-02 21:05:28,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:28,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193789927] [2022-11-02 21:05:28,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:28,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:31,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 703 proven. 1236 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-02 21:05:31,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:31,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193789927] [2022-11-02 21:05:31,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193789927] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:05:31,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679700117] [2022-11-02 21:05:31,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:31,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:05:31,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:31,214 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:05:31,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:05:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:31,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 1719 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:05:31,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:32,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 1235 proven. 0 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2022-11-02 21:05:32,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:32,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679700117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:32,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:05:32,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-02 21:05:32,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554491646] [2022-11-02 21:05:32,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:32,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:05:32,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:32,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:05:32,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:05:32,443 INFO L87 Difference]: Start difference. First operand 39334 states and 42399 transitions. Second operand has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:35,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:35,022 INFO L93 Difference]: Finished difference Result 91086 states and 99006 transitions. [2022-11-02 21:05:35,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:05:35,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 0 states have call successors, (0), 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 1510 [2022-11-02 21:05:35,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:35,071 INFO L225 Difference]: With dead ends: 91086 [2022-11-02 21:05:35,072 INFO L226 Difference]: Without dead ends: 52444 [2022-11-02 21:05:35,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1516 GetRequests, 1510 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:05:35,090 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 343 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:35,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 222 Invalid, 2280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 1842 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-02 21:05:35,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52444 states. [2022-11-02 21:05:35,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52444 to 51754. [2022-11-02 21:05:35,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51754 states, 51753 states have (on average 1.0748748864800108) internal successors, (55628), 51753 states have internal predecessors, (55628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:35,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51754 states to 51754 states and 55628 transitions. [2022-11-02 21:05:35,572 INFO L78 Accepts]: Start accepts. Automaton has 51754 states and 55628 transitions. Word has length 1510 [2022-11-02 21:05:35,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:35,573 INFO L495 AbstractCegarLoop]: Abstraction has 51754 states and 55628 transitions. [2022-11-02 21:05:35,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:35,573 INFO L276 IsEmpty]: Start isEmpty. Operand 51754 states and 55628 transitions. [2022-11-02 21:05:35,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1529 [2022-11-02 21:05:35,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:35,609 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:35,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:35,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:05:35,811 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:35,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:35,812 INFO L85 PathProgramCache]: Analyzing trace with hash 42303698, now seen corresponding path program 1 times [2022-11-02 21:05:35,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:35,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807656131] [2022-11-02 21:05:35,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:35,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:36,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 1573 proven. 0 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2022-11-02 21:05:36,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:36,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807656131] [2022-11-02 21:05:36,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807656131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:36,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:36,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:05:36,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888013335] [2022-11-02 21:05:36,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:36,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:05:36,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:36,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:05:36,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:05:36,968 INFO L87 Difference]: Start difference. First operand 51754 states and 55628 transitions. Second operand has 3 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:39,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:39,776 INFO L93 Difference]: Finished difference Result 125586 states and 135636 transitions. [2022-11-02 21:05:39,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:05:39,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 0 states have call successors, (0), 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 1528 [2022-11-02 21:05:39,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:39,854 INFO L225 Difference]: With dead ends: 125586 [2022-11-02 21:05:39,854 INFO L226 Difference]: Without dead ends: 74524 [2022-11-02 21:05:40,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:05:40,066 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 667 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1902 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 1902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:40,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 312 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 1902 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-02 21:05:40,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74524 states. [2022-11-02 21:05:40,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74524 to 73834. [2022-11-02 21:05:40,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73834 states, 73833 states have (on average 1.0705375645036772) internal successors, (79041), 73833 states have internal predecessors, (79041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:40,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73834 states to 73834 states and 79041 transitions. [2022-11-02 21:05:40,690 INFO L78 Accepts]: Start accepts. Automaton has 73834 states and 79041 transitions. Word has length 1528 [2022-11-02 21:05:40,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:40,690 INFO L495 AbstractCegarLoop]: Abstraction has 73834 states and 79041 transitions. [2022-11-02 21:05:40,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:40,691 INFO L276 IsEmpty]: Start isEmpty. Operand 73834 states and 79041 transitions. [2022-11-02 21:05:40,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1633 [2022-11-02 21:05:40,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:40,727 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:40,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 21:05:40,728 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:40,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:40,728 INFO L85 PathProgramCache]: Analyzing trace with hash 122804646, now seen corresponding path program 1 times [2022-11-02 21:05:40,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:40,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071236254] [2022-11-02 21:05:40,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:40,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:40,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:42,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2621 backedges. 1632 proven. 0 refuted. 0 times theorem prover too weak. 989 trivial. 0 not checked. [2022-11-02 21:05:42,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:42,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071236254] [2022-11-02 21:05:42,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071236254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:42,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:42,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:05:42,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59748599] [2022-11-02 21:05:42,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:42,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:05:42,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:42,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:05:42,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:05:42,201 INFO L87 Difference]: Start difference. First operand 73834 states and 79041 transitions. Second operand has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:45,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:45,029 INFO L93 Difference]: Finished difference Result 153876 states and 164449 transitions. [2022-11-02 21:05:45,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:05:45,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 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 1632 [2022-11-02 21:05:45,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:45,103 INFO L225 Difference]: With dead ends: 153876 [2022-11-02 21:05:45,103 INFO L226 Difference]: Without dead ends: 73834 [2022-11-02 21:05:45,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:05:45,131 INFO L413 NwaCegarLoop]: 1052 mSDtfsCounter, 651 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 2111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:45,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 1059 Invalid, 2111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-02 21:05:45,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73834 states. [2022-11-02 21:05:46,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73834 to 71764. [2022-11-02 21:05:46,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71764 states, 71763 states have (on average 1.0359238047461783) internal successors, (74341), 71763 states have internal predecessors, (74341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:46,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71764 states to 71764 states and 74341 transitions. [2022-11-02 21:05:46,284 INFO L78 Accepts]: Start accepts. Automaton has 71764 states and 74341 transitions. Word has length 1632 [2022-11-02 21:05:46,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:46,285 INFO L495 AbstractCegarLoop]: Abstraction has 71764 states and 74341 transitions. [2022-11-02 21:05:46,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:46,285 INFO L276 IsEmpty]: Start isEmpty. Operand 71764 states and 74341 transitions. [2022-11-02 21:05:46,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1668 [2022-11-02 21:05:46,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:46,359 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:46,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 21:05:46,359 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:46,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:46,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1467632712, now seen corresponding path program 1 times [2022-11-02 21:05:46,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:46,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348031659] [2022-11-02 21:05:46,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:46,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:49,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2955 backedges. 1974 proven. 319 refuted. 0 times theorem prover too weak. 662 trivial. 0 not checked. [2022-11-02 21:05:49,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:49,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348031659] [2022-11-02 21:05:49,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348031659] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:05:49,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113054445] [2022-11-02 21:05:49,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:49,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:05:49,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:49,738 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:05:49,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:05:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:50,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 1932 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:05:50,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2955 backedges. 1994 proven. 0 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2022-11-02 21:05:50,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:50,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113054445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:50,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:05:50,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-02 21:05:50,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80862240] [2022-11-02 21:05:50,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:50,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:05:50,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:50,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:05:50,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:05:50,471 INFO L87 Difference]: Start difference. First operand 71764 states and 74341 transitions. Second operand has 3 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:53,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:53,270 INFO L93 Difference]: Finished difference Result 156636 states and 162591 transitions. [2022-11-02 21:05:53,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:05:53,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 0 states have call successors, (0), 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 1667 [2022-11-02 21:05:53,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:53,365 INFO L225 Difference]: With dead ends: 156636 [2022-11-02 21:05:53,365 INFO L226 Difference]: Without dead ends: 85564 [2022-11-02 21:05:53,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1676 GetRequests, 1669 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:05:53,405 INFO L413 NwaCegarLoop]: 957 mSDtfsCounter, 609 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:53,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 964 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 21:05:53,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85564 states. [2022-11-02 21:05:54,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85564 to 85564. [2022-11-02 21:05:54,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85564 states, 85563 states have (on average 1.0337412199198253) internal successors, (88450), 85563 states have internal predecessors, (88450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:54,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85564 states to 85564 states and 88450 transitions. [2022-11-02 21:05:54,736 INFO L78 Accepts]: Start accepts. Automaton has 85564 states and 88450 transitions. Word has length 1667 [2022-11-02 21:05:54,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:54,736 INFO L495 AbstractCegarLoop]: Abstraction has 85564 states and 88450 transitions. [2022-11-02 21:05:54,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:54,737 INFO L276 IsEmpty]: Start isEmpty. Operand 85564 states and 88450 transitions. [2022-11-02 21:05:54,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1689 [2022-11-02 21:05:54,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:54,793 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:54,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-02 21:05:55,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bf45524-a76f-4ea9-91ee-d7e3ea9416b5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 21:05:55,006 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:55,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:55,007 INFO L85 PathProgramCache]: Analyzing trace with hash -957661622, now seen corresponding path program 1 times [2022-11-02 21:05:55,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:55,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477066248] [2022-11-02 21:05:55,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:55,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:57,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3039 backedges. 2273 proven. 0 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2022-11-02 21:05:57,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:57,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477066248] [2022-11-02 21:05:57,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477066248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:57,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:57,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:57,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740509175] [2022-11-02 21:05:57,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:57,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:57,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:57,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:57,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:57,769 INFO L87 Difference]: Start difference. First operand 85564 states and 88450 transitions. Second operand has 4 states, 4 states have (on average 281.25) internal successors, (1125), 4 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:01,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:01,861 INFO L93 Difference]: Finished difference Result 204936 states and 212344 transitions. [2022-11-02 21:06:01,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:06:01,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 281.25) internal successors, (1125), 4 states have internal predecessors, (1125), 0 states have call successors, (0), 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 1688 [2022-11-02 21:06:01,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:01,973 INFO L225 Difference]: With dead ends: 204936 [2022-11-02 21:06:01,973 INFO L226 Difference]: Without dead ends: 120064 [2022-11-02 21:06:01,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:06:01,997 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 1244 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 3341 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 3690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 3341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:01,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1244 Valid, 970 Invalid, 3690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 3341 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-02 21:06:02,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120064 states. [2022-11-02 21:06:03,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120064 to 118684. [2022-11-02 21:06:03,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118684 states, 118683 states have (on average 1.029835781030139) internal successors, (122224), 118683 states have internal predecessors, (122224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:03,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118684 states to 118684 states and 122224 transitions. [2022-11-02 21:06:03,424 INFO L78 Accepts]: Start accepts. Automaton has 118684 states and 122224 transitions. Word has length 1688 [2022-11-02 21:06:03,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:03,424 INFO L495 AbstractCegarLoop]: Abstraction has 118684 states and 122224 transitions. [2022-11-02 21:06:03,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 281.25) internal successors, (1125), 4 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:03,425 INFO L276 IsEmpty]: Start isEmpty. Operand 118684 states and 122224 transitions. [2022-11-02 21:06:03,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1822 [2022-11-02 21:06:03,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:03,471 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:03,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 21:06:03,472 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:03,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:03,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1467640742, now seen corresponding path program 1 times [2022-11-02 21:06:03,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:03,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27186884] [2022-11-02 21:06:03,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:03,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:04,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3577 backedges. 1956 proven. 0 refuted. 0 times theorem prover too weak. 1621 trivial. 0 not checked. [2022-11-02 21:06:04,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:04,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27186884] [2022-11-02 21:06:04,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27186884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:04,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:04,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:06:04,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779836474] [2022-11-02 21:06:04,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:04,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:06:04,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:04,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:06:04,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:04,918 INFO L87 Difference]: Start difference. First operand 118684 states and 122224 transitions. Second operand has 3 states, 3 states have (on average 340.6666666666667) internal successors, (1022), 3 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:07,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:07,882 INFO L93 Difference]: Finished difference Result 238056 states and 245151 transitions. [2022-11-02 21:06:07,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:06:07,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 340.6666666666667) internal successors, (1022), 3 states have internal predecessors, (1022), 0 states have call successors, (0), 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 1821 [2022-11-02 21:06:07,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:07,993 INFO L225 Difference]: With dead ends: 238056 [2022-11-02 21:06:07,994 INFO L226 Difference]: Without dead ends: 120064 [2022-11-02 21:06:08,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:08,025 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 625 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1767 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 1947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:08,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 932 Invalid, 1947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1767 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 21:06:08,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120064 states. [2022-11-02 21:06:09,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120064 to 117304. [2022-11-02 21:06:09,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117304 states, 117303 states have (on average 1.0255321688277368) internal successors, (120298), 117303 states have internal predecessors, (120298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:09,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117304 states to 117304 states and 120298 transitions. [2022-11-02 21:06:09,655 INFO L78 Accepts]: Start accepts. Automaton has 117304 states and 120298 transitions. Word has length 1821 [2022-11-02 21:06:09,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:09,656 INFO L495 AbstractCegarLoop]: Abstraction has 117304 states and 120298 transitions. [2022-11-02 21:06:09,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 340.6666666666667) internal successors, (1022), 3 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:09,656 INFO L276 IsEmpty]: Start isEmpty. Operand 117304 states and 120298 transitions. [2022-11-02 21:06:09,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1848 [2022-11-02 21:06:09,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:09,702 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:09,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 21:06:09,703 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:09,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:09,703 INFO L85 PathProgramCache]: Analyzing trace with hash 2006931382, now seen corresponding path program 1 times [2022-11-02 21:06:09,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:09,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778015882] [2022-11-02 21:06:09,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:09,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:12,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3548 backedges. 1694 proven. 0 refuted. 0 times theorem prover too weak. 1854 trivial. 0 not checked. [2022-11-02 21:06:12,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:12,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778015882] [2022-11-02 21:06:12,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778015882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:12,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:12,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:06:12,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50801642] [2022-11-02 21:06:12,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:12,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:06:12,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:12,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:06:12,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:12,400 INFO L87 Difference]: Start difference. First operand 117304 states and 120298 transitions. Second operand has 3 states, 3 states have (on average 337.6666666666667) internal successors, (1013), 3 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:15,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:15,277 INFO L93 Difference]: Finished difference Result 247026 states and 253608 transitions. [2022-11-02 21:06:15,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:06:15,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 337.6666666666667) internal successors, (1013), 3 states have internal predecessors, (1013), 0 states have call successors, (0), 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 1847 [2022-11-02 21:06:15,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:15,422 INFO L225 Difference]: With dead ends: 247026 [2022-11-02 21:06:15,422 INFO L226 Difference]: Without dead ends: 130414 [2022-11-02 21:06:15,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:15,476 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 300 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1674 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 1674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:15,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 831 Invalid, 2022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 1674 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 21:06:15,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130414 states. [2022-11-02 21:06:17,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130414 to 126964. [2022-11-02 21:06:17,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126964 states, 126963 states have (on average 1.0251175539330357) internal successors, (130152), 126963 states have internal predecessors, (130152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:17,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126964 states to 126964 states and 130152 transitions. [2022-11-02 21:06:17,240 INFO L78 Accepts]: Start accepts. Automaton has 126964 states and 130152 transitions. Word has length 1847 [2022-11-02 21:06:17,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:17,241 INFO L495 AbstractCegarLoop]: Abstraction has 126964 states and 130152 transitions. [2022-11-02 21:06:17,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 337.6666666666667) internal successors, (1013), 3 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:17,241 INFO L276 IsEmpty]: Start isEmpty. Operand 126964 states and 130152 transitions. [2022-11-02 21:06:17,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1971 [2022-11-02 21:06:17,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:17,309 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:17,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 21:06:17,309 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:17,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:17,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1834861578, now seen corresponding path program 1 times [2022-11-02 21:06:17,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:17,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750428387] [2022-11-02 21:06:17,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:17,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:21,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4359 backedges. 1878 proven. 0 refuted. 0 times theorem prover too weak. 2481 trivial. 0 not checked. [2022-11-02 21:06:21,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:21,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750428387] [2022-11-02 21:06:21,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750428387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:21,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:21,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:06:21,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081787255] [2022-11-02 21:06:21,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:21,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:06:21,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:21,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:06:21,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:21,280 INFO L87 Difference]: Start difference. First operand 126964 states and 130152 transitions. Second operand has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:24,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:24,032 INFO L93 Difference]: Finished difference Result 253236 states and 259611 transitions. [2022-11-02 21:06:24,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:06:24,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 0 states have call successors, (0), 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 1970 [2022-11-02 21:06:24,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:24,212 INFO L225 Difference]: With dead ends: 253236 [2022-11-02 21:06:24,212 INFO L226 Difference]: Without dead ends: 126964 [2022-11-02 21:06:24,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:24,276 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 313 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1667 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 1892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:24,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 73 Invalid, 1892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1667 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-02 21:06:24,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126964 states. [2022-11-02 21:06:25,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126964 to 126964. [2022-11-02 21:06:25,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126964 states, 126963 states have (on average 1.0221639375251057) internal successors, (129777), 126963 states have internal predecessors, (129777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:26,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126964 states to 126964 states and 129777 transitions. [2022-11-02 21:06:26,063 INFO L78 Accepts]: Start accepts. Automaton has 126964 states and 129777 transitions. Word has length 1970 [2022-11-02 21:06:26,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:26,064 INFO L495 AbstractCegarLoop]: Abstraction has 126964 states and 129777 transitions. [2022-11-02 21:06:26,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:26,065 INFO L276 IsEmpty]: Start isEmpty. Operand 126964 states and 129777 transitions. [2022-11-02 21:06:26,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2229 [2022-11-02 21:06:26,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:26,154 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:26,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 21:06:26,154 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:26,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:26,155 INFO L85 PathProgramCache]: Analyzing trace with hash -772549383, now seen corresponding path program 1 times [2022-11-02 21:06:26,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:26,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824409582] [2022-11-02 21:06:26,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:26,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat