./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3282ab39-d7a8-40eb-b98d-4d63b53d8e75/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3282ab39-d7a8-40eb-b98d-4d63b53d8e75/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3282ab39-d7a8-40eb-b98d-4d63b53d8e75/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3282ab39-d7a8-40eb-b98d-4d63b53d8e75/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3282ab39-d7a8-40eb-b98d-4d63b53d8e75/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3282ab39-d7a8-40eb-b98d-4d63b53d8e75/bin/uautomizer-YU5uOKAj3y --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 64bit --witnessprinter.graph.data.programhash dfd6d574d08999b62054724022525ae58fcf8eb53291450098ab652e14e39cce --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:11:29,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:11:29,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:11:29,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:11:29,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:11:29,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:11:29,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:11:29,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:11:29,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:11:29,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:11:29,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:11:29,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:11:29,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:11:29,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:11:29,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:11:29,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:11:29,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:11:29,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:11:29,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:11:29,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:11:29,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:11:29,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:11:29,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:11:29,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:11:29,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:11:29,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:11:29,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:11:29,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:11:29,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:11:29,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:11:29,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:11:29,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:11:29,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:11:29,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:11:29,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:11:29,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:11:29,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:11:29,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:11:29,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:11:29,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:11:29,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:11:29,874 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3282ab39-d7a8-40eb-b98d-4d63b53d8e75/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 18:11:29,916 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:11:29,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:11:29,917 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:11:29,918 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:11:29,928 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:11:29,928 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:11:29,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:11:29,929 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:11:29,929 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:11:29,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:11:29,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:11:29,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:11:29,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:11:29,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:11:29,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:11:29,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:11:29,932 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:11:29,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:11:29,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:11:29,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:11:29,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:11:29,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:11:29,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:11:29,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:11:29,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:11:29,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:11:29,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:11:29,934 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:11:29,935 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:11:29,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:11:29,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:11:29,937 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_3282ab39-d7a8-40eb-b98d-4d63b53d8e75/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3282ab39-d7a8-40eb-b98d-4d63b53d8e75/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfd6d574d08999b62054724022525ae58fcf8eb53291450098ab652e14e39cce [2021-11-13 18:11:30,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:11:30,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:11:30,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:11:30,250 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:11:30,251 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:11:30,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3282ab39-d7a8-40eb-b98d-4d63b53d8e75/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-13 18:11:30,313 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3282ab39-d7a8-40eb-b98d-4d63b53d8e75/bin/uautomizer-YU5uOKAj3y/data/17b02c1ba/e9484e0301a04d1699fde175708749bc/FLAGd65d48454 [2021-11-13 18:11:31,434 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:11:31,436 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3282ab39-d7a8-40eb-b98d-4d63b53d8e75/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-13 18:11:31,510 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3282ab39-d7a8-40eb-b98d-4d63b53d8e75/bin/uautomizer-YU5uOKAj3y/data/17b02c1ba/e9484e0301a04d1699fde175708749bc/FLAGd65d48454 [2021-11-13 18:11:31,667 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3282ab39-d7a8-40eb-b98d-4d63b53d8e75/bin/uautomizer-YU5uOKAj3y/data/17b02c1ba/e9484e0301a04d1699fde175708749bc [2021-11-13 18:11:31,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:11:31,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:11:31,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:11:31,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:11:31,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:11:31,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:11:31" (1/1) ... [2021-11-13 18:11:31,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d0b65c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:31, skipping insertion in model container [2021-11-13 18:11:31,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:11:31" (1/1) ... [2021-11-13 18:11:31,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:11:31,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:11:36,882 WARN L228 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_3282ab39-d7a8-40eb-b98d-4d63b53d8e75/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[479141,479154] [2021-11-13 18:11:37,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:11:37,348 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:11:37,958 WARN L228 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_3282ab39-d7a8-40eb-b98d-4d63b53d8e75/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[479141,479154] [2021-11-13 18:11:37,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:11:38,358 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:11:38,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:38 WrapperNode [2021-11-13 18:11:38,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:11:38,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:11:38,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:11:38,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:11:38,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:38" (1/1) ... [2021-11-13 18:11:38,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:38" (1/1) ... [2021-11-13 18:11:38,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:11:38,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:11:38,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:11:38,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:11:38,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:38" (1/1) ... [2021-11-13 18:11:38,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:38" (1/1) ... [2021-11-13 18:11:38,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:38" (1/1) ... [2021-11-13 18:11:38,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:38" (1/1) ... [2021-11-13 18:11:39,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:38" (1/1) ... [2021-11-13 18:11:39,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:38" (1/1) ... [2021-11-13 18:11:39,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:38" (1/1) ... [2021-11-13 18:11:39,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:11:39,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:11:39,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:11:39,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:11:39,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:38" (1/1) ... [2021-11-13 18:11:39,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:11:39,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3282ab39-d7a8-40eb-b98d-4d63b53d8e75/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:11:39,344 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3282ab39-d7a8-40eb-b98d-4d63b53d8e75/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:11:39,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3282ab39-d7a8-40eb-b98d-4d63b53d8e75/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:11:39,394 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_le_to_cpu [2021-11-13 18:11:39,395 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_le_to_cpu [2021-11-13 18:11:39,395 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_eth_tx_timeout [2021-11-13 18:11:39,395 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_eth_tx_timeout [2021-11-13 18:11:39,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_5 [2021-11-13 18:11:39,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_5 [2021-11-13 18:11:39,396 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-13 18:11:39,396 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-13 18:11:39,396 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-13 18:11:39,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 18:11:39,396 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 18:11:39,396 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_trigger [2021-11-13 18:11:39,397 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_trigger [2021-11-13 18:11:39,397 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-13 18:11:39,397 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-13 18:11:39,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 18:11:39,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 18:11:39,397 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_mib_mode_helper [2021-11-13 18:11:39,398 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_mib_mode_helper [2021-11-13 18:11:39,398 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2021-11-13 18:11:39,398 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2021-11-13 18:11:39,398 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-13 18:11:39,398 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-13 18:11:39,398 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-13 18:11:39,399 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-13 18:11:39,399 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-13 18:11:39,399 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-13 18:11:39,399 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set_request [2021-11-13 18:11:39,399 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set_request [2021-11-13 18:11:39,399 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_cpu_to_le [2021-11-13 18:11:39,400 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_cpu_to_le [2021-11-13 18:11:39,400 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_get_state [2021-11-13 18:11:39,400 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_get_state [2021-11-13 18:11:39,400 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-13 18:11:39,400 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-13 18:11:39,400 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-13 18:11:39,401 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-13 18:11:39,401 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-13 18:11:39,401 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-13 18:11:39,401 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgt_release [2021-11-13 18:11:39,402 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgt_release [2021-11-13 18:11:39,402 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-13 18:11:39,402 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-13 18:11:39,402 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-13 18:11:39,402 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-13 18:11:39,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:11:39,403 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-13 18:11:39,403 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-13 18:11:39,403 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-13 18:11:39,403 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-13 18:11:39,403 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2021-11-13 18:11:39,404 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2021-11-13 18:11:39,404 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set [2021-11-13 18:11:39,404 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set [2021-11-13 18:11:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-13 18:11:39,405 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-13 18:11:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-13 18:11:39,405 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-13 18:11:39,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-13 18:11:39,407 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_reset [2021-11-13 18:11:39,407 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_reset [2021-11-13 18:11:39,407 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-13 18:11:39,407 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-13 18:11:39,407 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2021-11-13 18:11:39,407 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2021-11-13 18:11:39,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 18:11:39,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:11:39,408 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-13 18:11:39,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-13 18:11:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 18:11:39,409 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 18:11:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_set_mac_address [2021-11-13 18:11:39,409 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_set_mac_address [2021-11-13 18:11:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_resume [2021-11-13 18:11:39,410 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_resume [2021-11-13 18:11:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-13 18:11:39,410 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-13 18:11:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-13 18:11:39,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-13 18:11:39,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:11:39,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-13 18:11:39,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-13 18:11:39,412 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-13 18:11:39,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-13 18:11:39,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:11:39,412 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-13 18:11:39,412 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-13 18:11:39,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-13 18:11:39,413 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-13 18:11:39,413 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-13 18:11:39,413 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-13 18:11:39,414 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-13 18:11:39,414 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2021-11-13 18:11:39,414 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2021-11-13 18:11:39,414 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-13 18:11:39,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-13 18:11:39,415 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-13 18:11:39,415 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-13 18:11:39,416 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2021-11-13 18:11:39,416 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2021-11-13 18:11:39,416 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2021-11-13 18:11:39,417 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2021-11-13 18:11:39,417 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-13 18:11:39,417 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-13 18:11:39,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:11:39,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:11:39,418 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-13 18:11:39,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-13 18:11:39,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-13 18:11:39,418 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-13 18:11:39,418 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_clear_mac [2021-11-13 18:11:39,418 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_clear_mac [2021-11-13 18:11:39,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 18:11:39,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 18:11:39,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 18:11:39,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 18:11:39,420 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-13 18:11:39,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-13 18:11:39,420 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-13 18:11:39,421 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-13 18:11:39,423 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-13 18:11:39,424 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-13 18:11:39,424 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-13 18:11:39,424 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-13 18:11:39,425 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_bring_down [2021-11-13 18:11:39,425 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_bring_down [2021-11-13 18:11:39,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_stats_lock_of_NOT_ARG_SIGN [2021-11-13 18:11:39,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_stats_lock_of_NOT_ARG_SIGN [2021-11-13 18:11:39,427 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2021-11-13 18:11:39,433 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2021-11-13 18:11:39,433 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-13 18:11:39,434 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-13 18:11:39,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 18:11:39,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 18:11:39,434 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-13 18:11:39,434 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-13 18:11:39,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 18:11:39,434 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 18:11:39,435 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 18:11:39,435 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 18:11:39,435 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-13 18:11:39,435 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-13 18:11:39,435 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-13 18:11:39,435 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-13 18:11:39,435 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-13 18:11:39,436 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-13 18:11:39,436 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-13 18:11:39,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-13 18:11:39,436 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-13 18:11:39,436 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-13 18:11:39,436 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-13 18:11:39,436 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-13 18:11:39,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:11:39,437 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-13 18:11:39,437 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-13 18:11:39,437 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_set_state [2021-11-13 18:11:39,437 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_set_state [2021-11-13 18:11:39,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:11:39,437 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2021-11-13 18:11:39,438 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2021-11-13 18:11:39,438 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2021-11-13 18:11:39,438 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2021-11-13 18:11:39,438 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2021-11-13 18:11:39,438 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2021-11-13 18:11:39,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:11:39,438 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2021-11-13 18:11:39,439 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2021-11-13 18:11:39,439 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-13 18:11:39,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-13 18:11:39,439 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-13 18:11:39,439 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-13 18:11:39,439 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-11-13 18:11:39,439 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-11-13 18:11:39,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2021-11-13 18:11:39,440 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2021-11-13 18:11:39,440 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-13 18:11:39,440 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-13 18:11:39,440 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-13 18:11:39,440 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-13 18:11:39,440 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_remove [2021-11-13 18:11:39,441 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_remove [2021-11-13 18:11:39,441 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_w32_flush [2021-11-13 18:11:39,441 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_w32_flush [2021-11-13 18:11:39,441 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-13 18:11:39,441 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-13 18:11:39,441 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-11-13 18:11:39,441 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-11-13 18:11:39,442 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-13 18:11:39,442 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-13 18:11:39,442 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_commit_list [2021-11-13 18:11:39,442 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_commit_list [2021-11-13 18:11:39,442 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-13 18:11:39,442 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-13 18:11:39,442 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single___1 [2021-11-13 18:11:39,443 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single___1 [2021-11-13 18:11:39,443 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-13 18:11:39,443 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-13 18:11:39,443 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgmt_rx_fill [2021-11-13 18:11:39,443 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgmt_rx_fill [2021-11-13 18:11:39,443 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgt_transaction [2021-11-13 18:11:39,443 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgt_transaction [2021-11-13 18:11:39,444 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 18:11:39,444 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 18:11:39,444 INFO L130 BoogieDeclarations]: Found specification of procedure channel_of_freq [2021-11-13 18:11:39,444 INFO L138 BoogieDeclarations]: Found implementation of procedure channel_of_freq [2021-11-13 18:11:39,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mgmt_lock_of_NOT_ARG_SIGN [2021-11-13 18:11:39,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mgmt_lock_of_NOT_ARG_SIGN [2021-11-13 18:11:39,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:11:39,445 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-13 18:11:39,445 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-13 18:11:39,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_stats_lock_of_NOT_ARG_SIGN [2021-11-13 18:11:39,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_stats_lock_of_NOT_ARG_SIGN [2021-11-13 18:11:39,445 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-11-13 18:11:39,445 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-11-13 18:11:39,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 18:11:39,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 18:11:39,446 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_free_memory [2021-11-13 18:11:39,446 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_free_memory [2021-11-13 18:11:39,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_islpci_acl [2021-11-13 18:11:39,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_islpci_acl [2021-11-13 18:11:39,446 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_commit [2021-11-13 18:11:39,446 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_commit [2021-11-13 18:11:39,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-13 18:11:39,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-13 18:11:39,447 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-13 18:11:39,447 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-13 18:11:39,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-13 18:11:39,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-13 18:11:39,447 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32s [2021-11-13 18:11:39,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32s [2021-11-13 18:11:39,448 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2021-11-13 18:11:39,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2021-11-13 18:11:39,448 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-13 18:11:39,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-13 18:11:39,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_5 [2021-11-13 18:11:39,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_5 [2021-11-13 18:11:39,449 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-13 18:11:39,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-13 18:11:39,449 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-13 18:11:39,449 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-13 18:11:39,449 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_in_queue [2021-11-13 18:11:39,449 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_in_queue [2021-11-13 18:11:39,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_islpci_acl [2021-11-13 18:11:39,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_islpci_acl [2021-11-13 18:11:39,450 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single___0 [2021-11-13 18:11:39,450 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single___0 [2021-11-13 18:11:39,451 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-13 18:11:39,455 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-13 18:11:39,455 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-13 18:11:39,455 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-13 18:11:39,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:11:39,455 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-13 18:11:39,455 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-13 18:11:39,455 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_disable_interrupts [2021-11-13 18:11:39,456 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_disable_interrupts [2021-11-13 18:11:41,110 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 18:11:58,230 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:11:58,230 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 18:11:58,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:11:58 BoogieIcfgContainer [2021-11-13 18:11:58,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:11:58,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:11:58,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:11:58,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:11:58,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:11:31" (1/3) ... [2021-11-13 18:11:58,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739e861d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:11:58, skipping insertion in model container [2021-11-13 18:11:58,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:38" (2/3) ... [2021-11-13 18:11:58,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739e861d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:11:58, skipping insertion in model container [2021-11-13 18:11:58,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:11:58" (3/3) ... [2021-11-13 18:11:58,244 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-13 18:11:58,249 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:11:58,249 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:11:58,305 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:11:58,311 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:11:58,311 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:11:58,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 1961 states, 1362 states have (on average 1.3127753303964758) internal successors, (1788), 1402 states have internal predecessors, (1788), 479 states have call successors, (479), 119 states have call predecessors, (479), 118 states have return successors, (471), 469 states have call predecessors, (471), 471 states have call successors, (471) [2021-11-13 18:11:58,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-13 18:11:58,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:11:58,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:11:58,378 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:11:58,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:11:58,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1446364687, now seen corresponding path program 1 times [2021-11-13 18:11:58,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:11:58,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605796928] [2021-11-13 18:11:58,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:58,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:11:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:59,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:11:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:59,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:11:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:59,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:11:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:59,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:11:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:59,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:11:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:59,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:11:59,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:11:59,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605796928] [2021-11-13 18:11:59,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605796928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:11:59,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:11:59,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:11:59,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453292774] [2021-11-13 18:11:59,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:11:59,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:11:59,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:11:59,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:11:59,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:11:59,727 INFO L87 Difference]: Start difference. First operand has 1961 states, 1362 states have (on average 1.3127753303964758) internal successors, (1788), 1402 states have internal predecessors, (1788), 479 states have call successors, (479), 119 states have call predecessors, (479), 118 states have return successors, (471), 469 states have call predecessors, (471), 471 states have call successors, (471) Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:12:01,959 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:12:04,160 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:12:10,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:12:10,270 INFO L93 Difference]: Finished difference Result 4087 states and 5885 transitions. [2021-11-13 18:12:10,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:12:10,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2021-11-13 18:12:10,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:12:10,312 INFO L225 Difference]: With dead ends: 4087 [2021-11-13 18:12:10,312 INFO L226 Difference]: Without dead ends: 2083 [2021-11-13 18:12:10,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:12:10,335 INFO L933 BasicCegarLoop]: 2616 mSDtfsCounter, 1221 mSDsluCounter, 2159 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 1236 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9111.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 4775 SdHoareTripleChecker+Invalid, 2741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.91ms SdHoareTripleChecker+Time, 1236 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10106.84ms IncrementalHoareTripleChecker+Time [2021-11-13 18:12:10,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1229 Valid, 4775 Invalid, 2741 Unknown, 0 Unchecked, 55.91ms Time], IncrementalHoareTripleChecker [1236 Valid, 1503 Invalid, 2 Unknown, 0 Unchecked, 10106.84ms Time] [2021-11-13 18:12:10,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2021-11-13 18:12:10,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 1917. [2021-11-13 18:12:10,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1328 states have (on average 1.2899096385542168) internal successors, (1713), 1358 states have internal predecessors, (1713), 471 states have call successors, (471), 118 states have call predecessors, (471), 117 states have return successors, (458), 456 states have call predecessors, (458), 458 states have call successors, (458) [2021-11-13 18:12:10,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 2642 transitions. [2021-11-13 18:12:10,570 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 2642 transitions. Word has length 52 [2021-11-13 18:12:10,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:12:10,571 INFO L470 AbstractCegarLoop]: Abstraction has 1917 states and 2642 transitions. [2021-11-13 18:12:10,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:12:10,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 2642 transitions. [2021-11-13 18:12:10,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-13 18:12:10,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:12:10,584 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:12:10,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:12:10,584 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:12:10,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:12:10,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1870011409, now seen corresponding path program 1 times [2021-11-13 18:12:10,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:12:10,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947148596] [2021-11-13 18:12:10,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:12:10,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:12:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:11,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:12:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:11,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:12:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:11,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:12:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:11,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:12:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:11,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:12:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:11,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:12:11,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:12:11,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947148596] [2021-11-13 18:12:11,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947148596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:12:11,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:12:11,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:12:11,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826865737] [2021-11-13 18:12:11,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:12:11,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:12:11,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:12:11,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:12:11,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:12:11,422 INFO L87 Difference]: Start difference. First operand 1917 states and 2642 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-13 18:12:13,681 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:12:15,783 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:12:17,892 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:12:31,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:12:31,482 INFO L93 Difference]: Finished difference Result 6036 states and 8473 transitions. [2021-11-13 18:12:31,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:12:31,482 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 52 [2021-11-13 18:12:31,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:12:31,517 INFO L225 Difference]: With dead ends: 6036 [2021-11-13 18:12:31,517 INFO L226 Difference]: Without dead ends: 4129 [2021-11-13 18:12:31,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:12:31,530 INFO L933 BasicCegarLoop]: 3060 mSDtfsCounter, 4385 mSDsluCounter, 5426 mSDsCounter, 0 mSdLazyCounter, 4189 mSolverCounterSat, 2586 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17774.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4718 SdHoareTripleChecker+Valid, 8486 SdHoareTripleChecker+Invalid, 6778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 93.99ms SdHoareTripleChecker+Time, 2586 IncrementalHoareTripleChecker+Valid, 4189 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19487.20ms IncrementalHoareTripleChecker+Time [2021-11-13 18:12:31,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4718 Valid, 8486 Invalid, 6778 Unknown, 0 Unchecked, 93.99ms Time], IncrementalHoareTripleChecker [2586 Valid, 4189 Invalid, 3 Unknown, 0 Unchecked, 19487.20ms Time] [2021-11-13 18:12:31,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4129 states. [2021-11-13 18:12:31,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4129 to 3789. [2021-11-13 18:12:31,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3789 states, 2628 states have (on average 1.288812785388128) internal successors, (3387), 2676 states have internal predecessors, (3387), 926 states have call successors, (926), 235 states have call predecessors, (926), 234 states have return successors, (913), 909 states have call predecessors, (913), 913 states have call successors, (913) [2021-11-13 18:12:31,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3789 states to 3789 states and 5226 transitions. [2021-11-13 18:12:31,737 INFO L78 Accepts]: Start accepts. Automaton has 3789 states and 5226 transitions. Word has length 52 [2021-11-13 18:12:31,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:12:31,738 INFO L470 AbstractCegarLoop]: Abstraction has 3789 states and 5226 transitions. [2021-11-13 18:12:31,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-13 18:12:31,738 INFO L276 IsEmpty]: Start isEmpty. Operand 3789 states and 5226 transitions. [2021-11-13 18:12:31,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-13 18:12:31,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:12:31,760 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:12:31,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:12:31,760 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:12:31,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:12:31,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1287472509, now seen corresponding path program 1 times [2021-11-13 18:12:31,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:12:31,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308247578] [2021-11-13 18:12:31,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:12:31,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:12:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:32,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:12:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:32,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:12:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:32,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:12:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:32,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:12:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:32,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:12:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:32,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-13 18:12:32,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:32,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:12:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:32,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:12:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:32,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:12:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:32,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-13 18:12:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:32,552 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 18:12:32,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:12:32,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308247578] [2021-11-13 18:12:32,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308247578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:12:32,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:12:32,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:12:32,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3762047] [2021-11-13 18:12:32,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:12:32,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:12:32,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:12:32,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:12:32,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:12:32,557 INFO L87 Difference]: Start difference. First operand 3789 states and 5226 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 18:12:34,752 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:12:42,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:12:42,517 INFO L93 Difference]: Finished difference Result 11913 states and 16735 transitions. [2021-11-13 18:12:42,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:12:42,517 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2021-11-13 18:12:42,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:12:42,587 INFO L225 Difference]: With dead ends: 11913 [2021-11-13 18:12:42,587 INFO L226 Difference]: Without dead ends: 8134 [2021-11-13 18:12:42,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:12:42,611 INFO L933 BasicCegarLoop]: 2931 mSDtfsCounter, 5524 mSDsluCounter, 3216 mSDsCounter, 0 mSdLazyCounter, 2052 mSolverCounterSat, 3880 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8322.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5849 SdHoareTripleChecker+Valid, 6147 SdHoareTripleChecker+Invalid, 5933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.35ms SdHoareTripleChecker+Time, 3880 IncrementalHoareTripleChecker+Valid, 2052 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9504.65ms IncrementalHoareTripleChecker+Time [2021-11-13 18:12:42,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5849 Valid, 6147 Invalid, 5933 Unknown, 0 Unchecked, 44.35ms Time], IncrementalHoareTripleChecker [3880 Valid, 2052 Invalid, 1 Unknown, 0 Unchecked, 9504.65ms Time] [2021-11-13 18:12:42,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8134 states. [2021-11-13 18:12:43,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8134 to 7446. [2021-11-13 18:12:43,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7446 states, 5168 states have (on average 1.2890866873065014) internal successors, (6662), 5252 states have internal predecessors, (6662), 1815 states have call successors, (1815), 463 states have call predecessors, (1815), 462 states have return successors, (1802), 1794 states have call predecessors, (1802), 1802 states have call successors, (1802) [2021-11-13 18:12:43,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7446 states to 7446 states and 10279 transitions. [2021-11-13 18:12:43,132 INFO L78 Accepts]: Start accepts. Automaton has 7446 states and 10279 transitions. Word has length 73 [2021-11-13 18:12:43,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:12:43,134 INFO L470 AbstractCegarLoop]: Abstraction has 7446 states and 10279 transitions. [2021-11-13 18:12:43,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 18:12:43,134 INFO L276 IsEmpty]: Start isEmpty. Operand 7446 states and 10279 transitions. [2021-11-13 18:12:43,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-13 18:12:43,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:12:43,137 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:12:43,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:12:43,137 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:12:43,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:12:43,138 INFO L85 PathProgramCache]: Analyzing trace with hash 486934852, now seen corresponding path program 1 times [2021-11-13 18:12:43,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:12:43,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59375301] [2021-11-13 18:12:43,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:12:43,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:12:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:43,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:12:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:43,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:12:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:43,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:12:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:43,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:12:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:43,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:12:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:43,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:12:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:43,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:12:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:43,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:12:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:43,833 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 18:12:43,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:12:43,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59375301] [2021-11-13 18:12:43,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59375301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:12:43,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:12:43,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:12:43,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471469112] [2021-11-13 18:12:43,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:12:43,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:12:43,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:12:43,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:12:43,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:12:43,836 INFO L87 Difference]: Start difference. First operand 7446 states and 10279 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 18:12:46,028 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:12:50,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:12:50,700 INFO L93 Difference]: Finished difference Result 8112 states and 11491 transitions. [2021-11-13 18:12:50,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:12:50,701 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 72 [2021-11-13 18:12:50,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:12:50,763 INFO L225 Difference]: With dead ends: 8112 [2021-11-13 18:12:50,763 INFO L226 Difference]: Without dead ends: 8109 [2021-11-13 18:12:50,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:12:50,770 INFO L933 BasicCegarLoop]: 2527 mSDtfsCounter, 3921 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 2094 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5842.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4241 SdHoareTripleChecker+Valid, 3619 SdHoareTripleChecker+Invalid, 2984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.87ms SdHoareTripleChecker+Time, 2094 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6578.03ms IncrementalHoareTripleChecker+Time [2021-11-13 18:12:50,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4241 Valid, 3619 Invalid, 2984 Unknown, 0 Unchecked, 21.87ms Time], IncrementalHoareTripleChecker [2094 Valid, 889 Invalid, 1 Unknown, 0 Unchecked, 6578.03ms Time] [2021-11-13 18:12:50,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8109 states. [2021-11-13 18:12:51,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8109 to 7445. [2021-11-13 18:12:51,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7445 states, 5168 states have (on average 1.2888931888544892) internal successors, (6661), 5251 states have internal predecessors, (6661), 1814 states have call successors, (1814), 463 states have call predecessors, (1814), 462 states have return successors, (1802), 1794 states have call predecessors, (1802), 1802 states have call successors, (1802) [2021-11-13 18:12:51,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7445 states to 7445 states and 10277 transitions. [2021-11-13 18:12:51,206 INFO L78 Accepts]: Start accepts. Automaton has 7445 states and 10277 transitions. Word has length 72 [2021-11-13 18:12:51,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:12:51,207 INFO L470 AbstractCegarLoop]: Abstraction has 7445 states and 10277 transitions. [2021-11-13 18:12:51,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 18:12:51,209 INFO L276 IsEmpty]: Start isEmpty. Operand 7445 states and 10277 transitions. [2021-11-13 18:12:51,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-13 18:12:51,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:12:51,213 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:12:51,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:12:51,214 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:12:51,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:12:51,214 INFO L85 PathProgramCache]: Analyzing trace with hash -2085748447, now seen corresponding path program 1 times [2021-11-13 18:12:51,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:12:51,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091576796] [2021-11-13 18:12:51,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:12:51,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:12:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:51,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:12:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:51,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:12:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:51,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:12:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:51,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:12:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:51,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:12:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:51,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:12:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:51,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:12:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:51,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:12:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 18:12:51,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:12:51,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091576796] [2021-11-13 18:12:51,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091576796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:12:51,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:12:51,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:12:51,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172766484] [2021-11-13 18:12:51,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:12:51,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:12:51,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:12:51,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:12:51,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:12:51,913 INFO L87 Difference]: Start difference. First operand 7445 states and 10277 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 18:12:54,076 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:12:56,204 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:03,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:13:03,365 INFO L93 Difference]: Finished difference Result 8111 states and 11489 transitions. [2021-11-13 18:13:03,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:13:03,366 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 73 [2021-11-13 18:13:03,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:13:03,423 INFO L225 Difference]: With dead ends: 8111 [2021-11-13 18:13:03,423 INFO L226 Difference]: Without dead ends: 8108 [2021-11-13 18:13:03,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:13:03,430 INFO L933 BasicCegarLoop]: 2519 mSDtfsCounter, 3336 mSDsluCounter, 2986 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 1470 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10151.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3661 SdHoareTripleChecker+Valid, 5505 SdHoareTripleChecker+Invalid, 3710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.59ms SdHoareTripleChecker+Time, 1470 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11124.24ms IncrementalHoareTripleChecker+Time [2021-11-13 18:13:03,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3661 Valid, 5505 Invalid, 3710 Unknown, 0 Unchecked, 30.59ms Time], IncrementalHoareTripleChecker [1470 Valid, 2238 Invalid, 2 Unknown, 0 Unchecked, 11124.24ms Time] [2021-11-13 18:13:03,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8108 states. [2021-11-13 18:13:03,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8108 to 7444. [2021-11-13 18:13:03,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7444 states, 5168 states have (on average 1.2886996904024768) internal successors, (6660), 5250 states have internal predecessors, (6660), 1813 states have call successors, (1813), 463 states have call predecessors, (1813), 462 states have return successors, (1802), 1794 states have call predecessors, (1802), 1802 states have call successors, (1802) [2021-11-13 18:13:03,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7444 states to 7444 states and 10275 transitions. [2021-11-13 18:13:03,816 INFO L78 Accepts]: Start accepts. Automaton has 7444 states and 10275 transitions. Word has length 73 [2021-11-13 18:13:03,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:13:03,816 INFO L470 AbstractCegarLoop]: Abstraction has 7444 states and 10275 transitions. [2021-11-13 18:13:03,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 18:13:03,817 INFO L276 IsEmpty]: Start isEmpty. Operand 7444 states and 10275 transitions. [2021-11-13 18:13:03,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-13 18:13:03,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:13:03,819 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:13:03,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:13:03,820 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:13:03,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:13:03,820 INFO L85 PathProgramCache]: Analyzing trace with hash -234547225, now seen corresponding path program 1 times [2021-11-13 18:13:03,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:13:03,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774486561] [2021-11-13 18:13:03,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:13:03,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:13:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:04,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:13:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:04,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:13:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:04,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:13:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:04,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:13:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:04,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:13:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:04,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:13:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:04,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:13:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:04,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:13:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 18:13:04,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:13:04,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774486561] [2021-11-13 18:13:04,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774486561] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:13:04,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:13:04,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:13:04,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830002263] [2021-11-13 18:13:04,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:13:04,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:13:04,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:13:04,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:13:04,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:13:04,585 INFO L87 Difference]: Start difference. First operand 7444 states and 10275 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 18:13:06,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:10,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:13:10,512 INFO L93 Difference]: Finished difference Result 8124 states and 11496 transitions. [2021-11-13 18:13:10,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:13:10,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 74 [2021-11-13 18:13:10,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:13:10,571 INFO L225 Difference]: With dead ends: 8124 [2021-11-13 18:13:10,571 INFO L226 Difference]: Without dead ends: 8120 [2021-11-13 18:13:10,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:13:10,578 INFO L933 BasicCegarLoop]: 2513 mSDtfsCounter, 3903 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 2075 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5009.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4235 SdHoareTripleChecker+Valid, 3604 SdHoareTripleChecker+Invalid, 2988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.19ms SdHoareTripleChecker+Time, 2075 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5633.59ms IncrementalHoareTripleChecker+Time [2021-11-13 18:13:10,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4235 Valid, 3604 Invalid, 2988 Unknown, 0 Unchecked, 18.19ms Time], IncrementalHoareTripleChecker [2075 Valid, 912 Invalid, 1 Unknown, 0 Unchecked, 5633.59ms Time] [2021-11-13 18:13:10,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8120 states. [2021-11-13 18:13:11,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8120 to 7454. [2021-11-13 18:13:11,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7454 states, 5176 states have (on average 1.2872874806800618) internal successors, (6663), 5256 states have internal predecessors, (6663), 1811 states have call successors, (1811), 467 states have call predecessors, (1811), 466 states have return successors, (1802), 1794 states have call predecessors, (1802), 1802 states have call successors, (1802) [2021-11-13 18:13:11,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7454 states to 7454 states and 10276 transitions. [2021-11-13 18:13:11,054 INFO L78 Accepts]: Start accepts. Automaton has 7454 states and 10276 transitions. Word has length 74 [2021-11-13 18:13:11,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:13:11,055 INFO L470 AbstractCegarLoop]: Abstraction has 7454 states and 10276 transitions. [2021-11-13 18:13:11,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 18:13:11,055 INFO L276 IsEmpty]: Start isEmpty. Operand 7454 states and 10276 transitions. [2021-11-13 18:13:11,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-13 18:13:11,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:13:11,057 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:13:11,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:13:11,058 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:13:11,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:13:11,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1318120676, now seen corresponding path program 1 times [2021-11-13 18:13:11,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:13:11,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179477613] [2021-11-13 18:13:11,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:13:11,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:13:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:11,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:13:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:11,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:13:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:11,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:13:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:11,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:13:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:11,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:13:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:11,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:13:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:11,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:13:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:11,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:13:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:11,720 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 18:13:11,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:13:11,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179477613] [2021-11-13 18:13:11,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179477613] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:13:11,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:13:11,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:13:11,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744847084] [2021-11-13 18:13:11,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:13:11,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:13:11,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:13:11,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:13:11,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:13:11,724 INFO L87 Difference]: Start difference. First operand 7454 states and 10276 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 18:13:13,918 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:21,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:13:21,566 INFO L93 Difference]: Finished difference Result 23624 states and 33459 transitions. [2021-11-13 18:13:21,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:13:21,567 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 75 [2021-11-13 18:13:21,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:13:21,658 INFO L225 Difference]: With dead ends: 23624 [2021-11-13 18:13:21,658 INFO L226 Difference]: Without dead ends: 16180 [2021-11-13 18:13:21,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:13:21,703 INFO L933 BasicCegarLoop]: 3127 mSDtfsCounter, 5456 mSDsluCounter, 3327 mSDsCounter, 0 mSdLazyCounter, 2087 mSolverCounterSat, 3741 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8077.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5780 SdHoareTripleChecker+Valid, 6454 SdHoareTripleChecker+Invalid, 5829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.92ms SdHoareTripleChecker+Time, 3741 IncrementalHoareTripleChecker+Valid, 2087 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9146.39ms IncrementalHoareTripleChecker+Time [2021-11-13 18:13:21,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5780 Valid, 6454 Invalid, 5829 Unknown, 0 Unchecked, 36.92ms Time], IncrementalHoareTripleChecker [3741 Valid, 2087 Invalid, 1 Unknown, 0 Unchecked, 9146.39ms Time] [2021-11-13 18:13:21,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16180 states. [2021-11-13 18:13:22,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16180 to 14954. [2021-11-13 18:13:22,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14954 states, 10387 states have (on average 1.286415711947627) internal successors, (13362), 10574 states have internal predecessors, (13362), 3608 states have call successors, (3608), 928 states have call predecessors, (3608), 958 states have return successors, (3806), 3579 states have call predecessors, (3806), 3598 states have call successors, (3806) [2021-11-13 18:13:22,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14954 states to 14954 states and 20776 transitions. [2021-11-13 18:13:22,608 INFO L78 Accepts]: Start accepts. Automaton has 14954 states and 20776 transitions. Word has length 75 [2021-11-13 18:13:22,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:13:22,610 INFO L470 AbstractCegarLoop]: Abstraction has 14954 states and 20776 transitions. [2021-11-13 18:13:22,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 18:13:22,610 INFO L276 IsEmpty]: Start isEmpty. Operand 14954 states and 20776 transitions. [2021-11-13 18:13:22,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-13 18:13:22,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:13:22,618 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:13:22,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:13:22,619 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:13:22,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:13:22,619 INFO L85 PathProgramCache]: Analyzing trace with hash -2088777078, now seen corresponding path program 1 times [2021-11-13 18:13:22,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:13:22,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085479682] [2021-11-13 18:13:22,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:13:22,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:13:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:23,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:13:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:23,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:13:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:23,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:13:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:23,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:13:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:23,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:13:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:23,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:13:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:23,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:13:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:23,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:13:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 18:13:23,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:13:23,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085479682] [2021-11-13 18:13:23,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085479682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:13:23,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:13:23,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:13:23,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657944697] [2021-11-13 18:13:23,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:13:23,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:13:23,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:13:23,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:13:23,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:13:23,228 INFO L87 Difference]: Start difference. First operand 14954 states and 20776 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 18:13:25,423 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:31,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:13:31,140 INFO L93 Difference]: Finished difference Result 16164 states and 23022 transitions. [2021-11-13 18:13:31,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:13:31,140 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2021-11-13 18:13:31,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:13:31,233 INFO L225 Difference]: With dead ends: 16164 [2021-11-13 18:13:31,233 INFO L226 Difference]: Without dead ends: 16161 [2021-11-13 18:13:31,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:13:31,247 INFO L933 BasicCegarLoop]: 2521 mSDtfsCounter, 3363 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 1488 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6476.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3686 SdHoareTripleChecker+Valid, 4508 SdHoareTripleChecker+Invalid, 3090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.18ms SdHoareTripleChecker+Time, 1488 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7315.24ms IncrementalHoareTripleChecker+Time [2021-11-13 18:13:31,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3686 Valid, 4508 Invalid, 3090 Unknown, 0 Unchecked, 26.18ms Time], IncrementalHoareTripleChecker [1488 Valid, 1601 Invalid, 1 Unknown, 0 Unchecked, 7315.24ms Time] [2021-11-13 18:13:31,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16161 states. [2021-11-13 18:13:32,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16161 to 14953. [2021-11-13 18:13:32,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14953 states, 10387 states have (on average 1.2863194377587368) internal successors, (13361), 10573 states have internal predecessors, (13361), 3607 states have call successors, (3607), 928 states have call predecessors, (3607), 958 states have return successors, (3806), 3579 states have call predecessors, (3806), 3598 states have call successors, (3806) [2021-11-13 18:13:32,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14953 states to 14953 states and 20774 transitions. [2021-11-13 18:13:32,153 INFO L78 Accepts]: Start accepts. Automaton has 14953 states and 20774 transitions. Word has length 76 [2021-11-13 18:13:32,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:13:32,153 INFO L470 AbstractCegarLoop]: Abstraction has 14953 states and 20774 transitions. [2021-11-13 18:13:32,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 18:13:32,154 INFO L276 IsEmpty]: Start isEmpty. Operand 14953 states and 20774 transitions. [2021-11-13 18:13:32,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-13 18:13:32,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:13:32,157 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:13:32,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 18:13:32,157 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:13:32,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:13:32,158 INFO L85 PathProgramCache]: Analyzing trace with hash -328420185, now seen corresponding path program 1 times [2021-11-13 18:13:32,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:13:32,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333274243] [2021-11-13 18:13:32,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:13:32,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:13:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:32,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:13:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:32,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:13:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:32,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:13:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:32,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:13:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:32,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:13:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:32,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:13:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:32,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:13:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:32,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:13:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:32,790 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 18:13:32,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:13:32,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333274243] [2021-11-13 18:13:32,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333274243] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:13:32,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:13:32,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:13:32,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373509691] [2021-11-13 18:13:32,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:13:32,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:13:32,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:13:32,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:13:32,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:13:32,793 INFO L87 Difference]: Start difference. First operand 14953 states and 20774 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 18:13:35,027 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:37,157 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:48,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:13:48,080 INFO L93 Difference]: Finished difference Result 47213 states and 66747 transitions. [2021-11-13 18:13:48,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:13:48,081 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 77 [2021-11-13 18:13:48,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:13:48,281 INFO L225 Difference]: With dead ends: 47213 [2021-11-13 18:13:48,281 INFO L226 Difference]: Without dead ends: 32270 [2021-11-13 18:13:48,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:13:48,362 INFO L933 BasicCegarLoop]: 2946 mSDtfsCounter, 4433 mSDsluCounter, 4266 mSDsCounter, 0 mSdLazyCounter, 3041 mSolverCounterSat, 2683 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12474.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4762 SdHoareTripleChecker+Valid, 7212 SdHoareTripleChecker+Invalid, 5726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 52.17ms SdHoareTripleChecker+Time, 2683 IncrementalHoareTripleChecker+Valid, 3041 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13908.69ms IncrementalHoareTripleChecker+Time [2021-11-13 18:13:48,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4762 Valid, 7212 Invalid, 5726 Unknown, 0 Unchecked, 52.17ms Time], IncrementalHoareTripleChecker [2683 Valid, 3041 Invalid, 2 Unknown, 0 Unchecked, 13908.69ms Time] [2021-11-13 18:13:48,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32270 states. [2021-11-13 18:13:49,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32270 to 29831. [2021-11-13 18:13:49,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29831 states, 20728 states have (on average 1.2863276727132382) internal successors, (26663), 21097 states have internal predecessors, (26663), 7192 states have call successors, (7192), 1849 states have call predecessors, (7192), 1910 states have return successors, (7606), 7140 states have call predecessors, (7606), 7182 states have call successors, (7606) [2021-11-13 18:13:49,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29831 states to 29831 states and 41461 transitions. [2021-11-13 18:13:49,932 INFO L78 Accepts]: Start accepts. Automaton has 29831 states and 41461 transitions. Word has length 77 [2021-11-13 18:13:49,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:13:49,932 INFO L470 AbstractCegarLoop]: Abstraction has 29831 states and 41461 transitions. [2021-11-13 18:13:49,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 18:13:49,933 INFO L276 IsEmpty]: Start isEmpty. Operand 29831 states and 41461 transitions. [2021-11-13 18:13:49,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-13 18:13:49,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:13:49,935 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:13:49,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 18:13:49,936 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:13:49,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:13:49,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1591926483, now seen corresponding path program 1 times [2021-11-13 18:13:49,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:13:49,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956720698] [2021-11-13 18:13:49,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:13:49,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:13:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:50,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:13:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:50,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:13:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:50,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:13:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:50,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:13:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:51,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:13:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:51,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:13:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:51,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:13:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:51,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:13:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:51,081 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 18:13:51,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:13:51,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956720698] [2021-11-13 18:13:51,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956720698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:13:51,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:13:51,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:13:51,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172709890] [2021-11-13 18:13:51,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:13:51,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:13:51,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:13:51,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:13:51,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:13:51,084 INFO L87 Difference]: Start difference. First operand 29831 states and 41461 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 18:13:53,313 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:55,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:57,603 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:14:05,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:14:05,917 INFO L93 Difference]: Finished difference Result 32249 states and 45951 transitions. [2021-11-13 18:14:05,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:14:05,918 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 78 [2021-11-13 18:14:05,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:14:06,052 INFO L225 Difference]: With dead ends: 32249 [2021-11-13 18:14:06,052 INFO L226 Difference]: Without dead ends: 32235 [2021-11-13 18:14:06,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:14:06,072 INFO L933 BasicCegarLoop]: 2513 mSDtfsCounter, 3322 mSDsluCounter, 2983 mSDsCounter, 0 mSdLazyCounter, 2229 mSolverCounterSat, 1464 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12520.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3644 SdHoareTripleChecker+Valid, 5496 SdHoareTripleChecker+Invalid, 3696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.96ms SdHoareTripleChecker+Time, 1464 IncrementalHoareTripleChecker+Valid, 2229 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13722.83ms IncrementalHoareTripleChecker+Time [2021-11-13 18:14:06,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3644 Valid, 5496 Invalid, 3696 Unknown, 0 Unchecked, 33.96ms Time], IncrementalHoareTripleChecker [1464 Valid, 2229 Invalid, 3 Unknown, 0 Unchecked, 13722.83ms Time] [2021-11-13 18:14:06,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32235 states. [2021-11-13 18:14:07,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32235 to 29819. [2021-11-13 18:14:07,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29819 states, 20717 states have (on average 1.2861900854370807) internal successors, (26646), 21085 states have internal predecessors, (26646), 7191 states have call successors, (7191), 1849 states have call predecessors, (7191), 1910 states have return successors, (7606), 7140 states have call predecessors, (7606), 7182 states have call successors, (7606) [2021-11-13 18:14:07,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29819 states to 29819 states and 41443 transitions. [2021-11-13 18:14:07,809 INFO L78 Accepts]: Start accepts. Automaton has 29819 states and 41443 transitions. Word has length 78 [2021-11-13 18:14:07,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:14:07,810 INFO L470 AbstractCegarLoop]: Abstraction has 29819 states and 41443 transitions. [2021-11-13 18:14:07,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 18:14:07,810 INFO L276 IsEmpty]: Start isEmpty. Operand 29819 states and 41443 transitions. [2021-11-13 18:14:07,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-13 18:14:07,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:14:07,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:14:07,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 18:14:07,822 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:14:07,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:14:07,823 INFO L85 PathProgramCache]: Analyzing trace with hash 293652181, now seen corresponding path program 1 times [2021-11-13 18:14:07,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:14:07,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700934001] [2021-11-13 18:14:07,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:14:07,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:14:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:08,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:14:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:08,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:14:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:08,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:14:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:08,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:14:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:08,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:14:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:08,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-13 18:14:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:08,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-13 18:14:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:08,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 18:14:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:08,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-13 18:14:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:08,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:14:08,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:08,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 18:14:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:08,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:14:08,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:14:08,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700934001] [2021-11-13 18:14:08,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700934001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:14:08,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:14:08,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:14:08,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966010268] [2021-11-13 18:14:08,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:14:08,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:14:08,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:14:08,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:14:08,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:14:08,671 INFO L87 Difference]: Start difference. First operand 29819 states and 41443 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 18:14:10,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:14:13,035 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:14:15,193 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:14:30,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:14:30,242 INFO L93 Difference]: Finished difference Result 85084 states and 119649 transitions. [2021-11-13 18:14:30,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 18:14:30,243 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2021-11-13 18:14:30,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:14:30,551 INFO L225 Difference]: With dead ends: 85084 [2021-11-13 18:14:30,552 INFO L226 Difference]: Without dead ends: 55275 [2021-11-13 18:14:30,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:14:30,697 INFO L933 BasicCegarLoop]: 2453 mSDtfsCounter, 5352 mSDsluCounter, 2893 mSDsCounter, 0 mSdLazyCounter, 5463 mSolverCounterSat, 3978 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16996.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5661 SdHoareTripleChecker+Valid, 5346 SdHoareTripleChecker+Invalid, 9444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 63.05ms SdHoareTripleChecker+Time, 3978 IncrementalHoareTripleChecker+Valid, 5463 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19000.62ms IncrementalHoareTripleChecker+Time [2021-11-13 18:14:30,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5661 Valid, 5346 Invalid, 9444 Unknown, 0 Unchecked, 63.05ms Time], IncrementalHoareTripleChecker [3978 Valid, 5463 Invalid, 3 Unknown, 0 Unchecked, 19000.62ms Time] [2021-11-13 18:14:30,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55275 states. [2021-11-13 18:14:33,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55275 to 51007. [2021-11-13 18:14:33,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51007 states, 35437 states have (on average 1.2867906425487485) internal successors, (45600), 36121 states have internal predecessors, (45600), 12187 states have call successors, (12187), 3273 states have call predecessors, (12187), 3382 states have return successors, (12914), 12092 states have call predecessors, (12914), 12178 states have call successors, (12914) [2021-11-13 18:14:33,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51007 states to 51007 states and 70701 transitions. [2021-11-13 18:14:33,488 INFO L78 Accepts]: Start accepts. Automaton has 51007 states and 70701 transitions. Word has length 113 [2021-11-13 18:14:33,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:14:33,489 INFO L470 AbstractCegarLoop]: Abstraction has 51007 states and 70701 transitions. [2021-11-13 18:14:33,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 18:14:33,489 INFO L276 IsEmpty]: Start isEmpty. Operand 51007 states and 70701 transitions. [2021-11-13 18:14:33,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-13 18:14:33,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:14:33,509 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:14:33,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 18:14:33,510 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:14:33,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:14:33,510 INFO L85 PathProgramCache]: Analyzing trace with hash 378795284, now seen corresponding path program 1 times [2021-11-13 18:14:33,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:14:33,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016181062] [2021-11-13 18:14:33,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:14:33,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:14:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:34,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:14:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:34,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:14:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:34,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:14:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:34,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:14:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:34,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:14:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:34,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:14:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:34,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:14:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:34,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:14:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:34,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 18:14:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:34,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:14:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:34,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:14:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:34,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-13 18:14:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:34,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-13 18:14:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:34,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-13 18:14:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:34,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:14:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:34,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-13 18:14:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:34,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-13 18:14:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:34,765 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-13 18:14:34,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:14:34,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016181062] [2021-11-13 18:14:34,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016181062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:14:34,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:14:34,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:14:34,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051660297] [2021-11-13 18:14:34,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:14:34,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:14:34,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:14:34,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:14:34,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:14:34,768 INFO L87 Difference]: Start difference. First operand 51007 states and 70701 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-13 18:14:36,976 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:14:39,116 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:14:41,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:14:43,484 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:15:06,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:15:06,811 INFO L93 Difference]: Finished difference Result 106222 states and 148840 transitions. [2021-11-13 18:15:06,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 18:15:06,812 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 135 [2021-11-13 18:15:06,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:15:07,054 INFO L225 Difference]: With dead ends: 106222 [2021-11-13 18:15:07,054 INFO L226 Difference]: Without dead ends: 55225 [2021-11-13 18:15:07,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-11-13 18:15:07,183 INFO L933 BasicCegarLoop]: 4292 mSDtfsCounter, 4257 mSDsluCounter, 4596 mSDsCounter, 0 mSdLazyCounter, 10446 mSolverCounterSat, 3197 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25971.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4671 SdHoareTripleChecker+Valid, 8888 SdHoareTripleChecker+Invalid, 13647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 95.06ms SdHoareTripleChecker+Time, 3197 IncrementalHoareTripleChecker+Valid, 10446 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28965.05ms IncrementalHoareTripleChecker+Time [2021-11-13 18:15:07,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4671 Valid, 8888 Invalid, 13647 Unknown, 0 Unchecked, 95.06ms Time], IncrementalHoareTripleChecker [3197 Valid, 10446 Invalid, 4 Unknown, 0 Unchecked, 28965.05ms Time] [2021-11-13 18:15:07,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55225 states. [2021-11-13 18:15:09,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55225 to 50944. [2021-11-13 18:15:09,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50944 states, 35395 states have (on average 1.2866789094504874) internal successors, (45542), 36086 states have internal predecessors, (45542), 12173 states have call successors, (12173), 3259 states have call predecessors, (12173), 3375 states have return successors, (12891), 12078 states have call predecessors, (12891), 12163 states have call successors, (12891) [2021-11-13 18:15:09,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50944 states to 50944 states and 70606 transitions. [2021-11-13 18:15:09,780 INFO L78 Accepts]: Start accepts. Automaton has 50944 states and 70606 transitions. Word has length 135 [2021-11-13 18:15:09,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:15:09,781 INFO L470 AbstractCegarLoop]: Abstraction has 50944 states and 70606 transitions. [2021-11-13 18:15:09,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-13 18:15:09,782 INFO L276 IsEmpty]: Start isEmpty. Operand 50944 states and 70606 transitions. [2021-11-13 18:15:09,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-13 18:15:09,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:15:09,798 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:15:09,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 18:15:09,799 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:15:09,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:15:09,799 INFO L85 PathProgramCache]: Analyzing trace with hash -865969197, now seen corresponding path program 1 times [2021-11-13 18:15:09,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:15:09,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848439306] [2021-11-13 18:15:09,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:15:09,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:15:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:10,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:15:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:10,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:15:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:10,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:15:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:10,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:15:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:10,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:15:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:10,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:15:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:10,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:15:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:10,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:15:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:10,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 18:15:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:10,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:15:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:10,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:15:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:10,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-13 18:15:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:10,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-13 18:15:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:10,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-13 18:15:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:10,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:15:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:10,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-13 18:15:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:10,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-13 18:15:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:11,000 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-13 18:15:11,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:15:11,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848439306] [2021-11-13 18:15:11,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848439306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:15:11,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:15:11,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 18:15:11,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835241635] [2021-11-13 18:15:11,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:15:11,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:15:11,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:15:11,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:15:11,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:15:11,003 INFO L87 Difference]: Start difference. First operand 50944 states and 70606 transitions. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-13 18:15:13,207 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:15:15,333 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:15:33,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:15:33,102 INFO L93 Difference]: Finished difference Result 60964 states and 87664 transitions. [2021-11-13 18:15:33,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 18:15:33,103 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 135 [2021-11-13 18:15:33,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:15:33,454 INFO L225 Difference]: With dead ends: 60964 [2021-11-13 18:15:33,454 INFO L226 Difference]: Without dead ends: 60869 [2021-11-13 18:15:33,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-11-13 18:15:33,476 INFO L933 BasicCegarLoop]: 3865 mSDtfsCounter, 3994 mSDsluCounter, 12169 mSDsCounter, 0 mSdLazyCounter, 8763 mSolverCounterSat, 2852 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17225.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4404 SdHoareTripleChecker+Valid, 16034 SdHoareTripleChecker+Invalid, 11617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 109.88ms SdHoareTripleChecker+Time, 2852 IncrementalHoareTripleChecker+Valid, 8763 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19461.86ms IncrementalHoareTripleChecker+Time [2021-11-13 18:15:33,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4404 Valid, 16034 Invalid, 11617 Unknown, 0 Unchecked, 109.88ms Time], IncrementalHoareTripleChecker [2852 Valid, 8763 Invalid, 2 Unknown, 0 Unchecked, 19461.86ms Time] [2021-11-13 18:15:33,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60869 states. [2021-11-13 18:15:35,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60869 to 50923. [2021-11-13 18:15:35,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50923 states, 35392 states have (on average 1.2864771699819169) internal successors, (45531), 36075 states have internal predecessors, (45531), 12155 states have call successors, (12155), 3258 states have call predecessors, (12155), 3375 states have return successors, (12875), 12069 states have call predecessors, (12875), 12147 states have call successors, (12875) [2021-11-13 18:15:36,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50923 states to 50923 states and 70561 transitions. [2021-11-13 18:15:36,166 INFO L78 Accepts]: Start accepts. Automaton has 50923 states and 70561 transitions. Word has length 135 [2021-11-13 18:15:36,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:15:36,167 INFO L470 AbstractCegarLoop]: Abstraction has 50923 states and 70561 transitions. [2021-11-13 18:15:36,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-13 18:15:36,167 INFO L276 IsEmpty]: Start isEmpty. Operand 50923 states and 70561 transitions. [2021-11-13 18:15:36,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-13 18:15:36,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:15:36,191 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-13 18:15:36,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 18:15:36,192 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:15:36,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:15:36,192 INFO L85 PathProgramCache]: Analyzing trace with hash 64044685, now seen corresponding path program 1 times [2021-11-13 18:15:36,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:15:36,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890545999] [2021-11-13 18:15:36,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:15:36,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:15:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:36,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:15:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:36,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:15:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:36,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:15:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:36,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:15:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:36,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:15:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:36,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:15:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:36,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:15:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:36,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:15:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:36,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-13 18:15:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:36,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:15:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:36,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-13 18:15:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:36,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-13 18:15:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:36,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-13 18:15:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:36,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-13 18:15:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:36,829 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 18:15:36,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:15:36,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890545999] [2021-11-13 18:15:36,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890545999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:15:36,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:15:36,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:15:36,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178381316] [2021-11-13 18:15:36,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:15:36,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:15:36,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:15:36,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:15:36,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:15:36,832 INFO L87 Difference]: Start difference. First operand 50923 states and 70561 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-13 18:15:39,082 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:15:41,192 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:15:43,520 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:15:58,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:15:58,007 INFO L93 Difference]: Finished difference Result 131415 states and 183906 transitions. [2021-11-13 18:15:58,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:15:58,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 148 [2021-11-13 18:15:58,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:15:58,428 INFO L225 Difference]: With dead ends: 131415 [2021-11-13 18:15:58,429 INFO L226 Difference]: Without dead ends: 80502 [2021-11-13 18:15:58,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-11-13 18:15:58,554 INFO L933 BasicCegarLoop]: 3751 mSDtfsCounter, 5003 mSDsluCounter, 2412 mSDsCounter, 0 mSdLazyCounter, 4714 mSolverCounterSat, 3909 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15269.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5391 SdHoareTripleChecker+Valid, 6163 SdHoareTripleChecker+Invalid, 8626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.47ms SdHoareTripleChecker+Time, 3909 IncrementalHoareTripleChecker+Valid, 4714 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17358.82ms IncrementalHoareTripleChecker+Time [2021-11-13 18:15:58,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5391 Valid, 6163 Invalid, 8626 Unknown, 0 Unchecked, 50.47ms Time], IncrementalHoareTripleChecker [3909 Valid, 4714 Invalid, 3 Unknown, 0 Unchecked, 17358.82ms Time] [2021-11-13 18:15:58,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80502 states. [2021-11-13 18:16:02,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80502 to 74341. [2021-11-13 18:16:02,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74341 states, 51796 states have (on average 1.2843655880762994) internal successors, (66525), 52795 states have internal predecessors, (66525), 17471 states have call successors, (17471), 4904 states have call predecessors, (17471), 5073 states have return successors, (18499), 17345 states have call predecessors, (18499), 17463 states have call successors, (18499) [2021-11-13 18:16:02,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74341 states to 74341 states and 102495 transitions. [2021-11-13 18:16:02,375 INFO L78 Accepts]: Start accepts. Automaton has 74341 states and 102495 transitions. Word has length 148 [2021-11-13 18:16:02,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:16:02,375 INFO L470 AbstractCegarLoop]: Abstraction has 74341 states and 102495 transitions. [2021-11-13 18:16:02,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-13 18:16:02,376 INFO L276 IsEmpty]: Start isEmpty. Operand 74341 states and 102495 transitions. [2021-11-13 18:16:02,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-13 18:16:02,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:16:02,398 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:16:02,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 18:16:02,398 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:16:02,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:16:02,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1653528564, now seen corresponding path program 1 times [2021-11-13 18:16:02,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:16:02,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242431853] [2021-11-13 18:16:02,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:16:02,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:16:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:03,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:16:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:03,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:16:03,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:03,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:16:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:03,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:16:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:03,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:16:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:03,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:16:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:03,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:16:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:03,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:16:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:03,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 18:16:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:03,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:16:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:03,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:16:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:03,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-13 18:16:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:03,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-13 18:16:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:03,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-13 18:16:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:03,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:16:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:03,536 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-13 18:16:03,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:16:03,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242431853] [2021-11-13 18:16:03,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242431853] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:16:03,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:16:03,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 18:16:03,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963482751] [2021-11-13 18:16:03,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:16:03,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:16:03,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:16:03,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:16:03,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:16:03,539 INFO L87 Difference]: Start difference. First operand 74341 states and 102495 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-13 18:16:05,696 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:16:07,922 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:16:10,002 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:16:28,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:16:28,331 INFO L93 Difference]: Finished difference Result 85180 states and 120546 transitions. [2021-11-13 18:16:28,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:16:28,331 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 148 [2021-11-13 18:16:28,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:16:28,701 INFO L225 Difference]: With dead ends: 85180 [2021-11-13 18:16:28,701 INFO L226 Difference]: Without dead ends: 48209 [2021-11-13 18:16:28,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-11-13 18:16:28,791 INFO L933 BasicCegarLoop]: 3087 mSDtfsCounter, 3410 mSDsluCounter, 9641 mSDsCounter, 0 mSdLazyCounter, 9732 mSolverCounterSat, 2245 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20107.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3651 SdHoareTripleChecker+Valid, 12728 SdHoareTripleChecker+Invalid, 11980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 80.64ms SdHoareTripleChecker+Time, 2245 IncrementalHoareTripleChecker+Valid, 9732 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22355.93ms IncrementalHoareTripleChecker+Time [2021-11-13 18:16:28,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3651 Valid, 12728 Invalid, 11980 Unknown, 0 Unchecked, 80.64ms Time], IncrementalHoareTripleChecker [2245 Valid, 9732 Invalid, 3 Unknown, 0 Unchecked, 22355.93ms Time] [2021-11-13 18:16:28,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48209 states. [2021-11-13 18:16:30,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48209 to 37488. [2021-11-13 18:16:30,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37488 states, 26120 states have (on average 1.2826952526799387) internal successors, (33504), 26614 states have internal predecessors, (33504), 8779 states have call successors, (8779), 2498 states have call predecessors, (8779), 2588 states have return successors, (9298), 8727 states have call predecessors, (9298), 8774 states have call successors, (9298) [2021-11-13 18:16:30,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37488 states to 37488 states and 51581 transitions. [2021-11-13 18:16:30,823 INFO L78 Accepts]: Start accepts. Automaton has 37488 states and 51581 transitions. Word has length 148 [2021-11-13 18:16:30,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:16:30,824 INFO L470 AbstractCegarLoop]: Abstraction has 37488 states and 51581 transitions. [2021-11-13 18:16:30,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-13 18:16:30,824 INFO L276 IsEmpty]: Start isEmpty. Operand 37488 states and 51581 transitions. [2021-11-13 18:16:30,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-13 18:16:30,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:16:30,848 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:16:30,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-13 18:16:30,848 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:16:30,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:16:30,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1742789121, now seen corresponding path program 1 times [2021-11-13 18:16:30,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:16:30,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538169830] [2021-11-13 18:16:30,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:16:30,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:16:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:16:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:16:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:16:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:16:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:16:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 18:16:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:16:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:16:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 18:16:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:16:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:16:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-13 18:16:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:16:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-13 18:16:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-13 18:16:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-13 18:16:31,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-13 18:16:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 18:16:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-13 18:16:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-11-13 18:16:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-13 18:16:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 18:16:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-11-13 18:16:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-13 18:16:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-11-13 18:16:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-13 18:16:31,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:16:31,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538169830] [2021-11-13 18:16:31,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538169830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:16:31,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:16:31,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:16:31,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488150596] [2021-11-13 18:16:31,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:16:31,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:16:31,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:16:31,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:16:31,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:16:31,837 INFO L87 Difference]: Start difference. First operand 37488 states and 51581 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 18:16:34,121 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:16:36,284 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:16:50,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:16:50,588 INFO L93 Difference]: Finished difference Result 103963 states and 143711 transitions. [2021-11-13 18:16:50,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:16:50,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 179 [2021-11-13 18:16:50,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:16:50,816 INFO L225 Difference]: With dead ends: 103963 [2021-11-13 18:16:50,816 INFO L226 Difference]: Without dead ends: 66485 [2021-11-13 18:16:50,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:16:50,905 INFO L933 BasicCegarLoop]: 3033 mSDtfsCounter, 3771 mSDsluCounter, 5252 mSDsCounter, 0 mSdLazyCounter, 3992 mSolverCounterSat, 2293 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13691.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4043 SdHoareTripleChecker+Valid, 8285 SdHoareTripleChecker+Invalid, 6287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.39ms SdHoareTripleChecker+Time, 2293 IncrementalHoareTripleChecker+Valid, 3992 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15396.93ms IncrementalHoareTripleChecker+Time [2021-11-13 18:16:50,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4043 Valid, 8285 Invalid, 6287 Unknown, 0 Unchecked, 55.39ms Time], IncrementalHoareTripleChecker [2293 Valid, 3992 Invalid, 2 Unknown, 0 Unchecked, 15396.93ms Time] [2021-11-13 18:16:50,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66485 states. [2021-11-13 18:16:53,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66485 to 61093. [2021-11-13 18:16:53,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61093 states, 42690 states have (on average 1.274935582103537) internal successors, (54427), 43484 states have internal predecessors, (54427), 14016 states have call successors, (14016), 4268 states have call predecessors, (14016), 4386 states have return successors, (14683), 13900 states have call predecessors, (14683), 14011 states have call successors, (14683) [2021-11-13 18:16:54,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61093 states to 61093 states and 83126 transitions. [2021-11-13 18:16:54,105 INFO L78 Accepts]: Start accepts. Automaton has 61093 states and 83126 transitions. Word has length 179 [2021-11-13 18:16:54,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:16:54,105 INFO L470 AbstractCegarLoop]: Abstraction has 61093 states and 83126 transitions. [2021-11-13 18:16:54,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 18:16:54,105 INFO L276 IsEmpty]: Start isEmpty. Operand 61093 states and 83126 transitions. [2021-11-13 18:16:54,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-13 18:16:54,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:16:54,120 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 18:16:54,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-13 18:16:54,121 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:16:54,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:16:54,121 INFO L85 PathProgramCache]: Analyzing trace with hash 312682114, now seen corresponding path program 1 times [2021-11-13 18:16:54,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:16:54,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955600038] [2021-11-13 18:16:54,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:16:54,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:16:54,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:54,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:16:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:54,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:16:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:54,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:16:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:54,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:16:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:54,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:16:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:54,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:16:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:54,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:16:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:54,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:16:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:54,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-13 18:16:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:54,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-13 18:16:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:54,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:16:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:54,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-13 18:16:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:54,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-13 18:16:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:54,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-13 18:16:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:54,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-13 18:16:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:54,991 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-13 18:16:54,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:16:54,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955600038] [2021-11-13 18:16:54,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955600038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:16:54,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:16:54,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:16:54,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335025568] [2021-11-13 18:16:54,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:16:54,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:16:54,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:16:54,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:16:54,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:16:54,994 INFO L87 Difference]: Start difference. First operand 61093 states and 83126 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-13 18:16:57,144 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:16:59,383 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:01,490 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:03,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:05,788 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:34,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:17:34,510 INFO L93 Difference]: Finished difference Result 151965 states and 209271 transitions. [2021-11-13 18:17:34,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 18:17:34,659 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 168 [2021-11-13 18:17:34,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:17:35,014 INFO L225 Difference]: With dead ends: 151965 [2021-11-13 18:17:35,014 INFO L226 Difference]: Without dead ends: 90891 [2021-11-13 18:17:35,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-11-13 18:17:35,158 INFO L933 BasicCegarLoop]: 4309 mSDtfsCounter, 4252 mSDsluCounter, 7222 mSDsCounter, 0 mSdLazyCounter, 12331 mSolverCounterSat, 3246 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31196.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4570 SdHoareTripleChecker+Valid, 11531 SdHoareTripleChecker+Invalid, 15582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 101.26ms SdHoareTripleChecker+Time, 3246 IncrementalHoareTripleChecker+Valid, 12331 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34861.42ms IncrementalHoareTripleChecker+Time [2021-11-13 18:17:35,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4570 Valid, 11531 Invalid, 15582 Unknown, 0 Unchecked, 101.26ms Time], IncrementalHoareTripleChecker [3246 Valid, 12331 Invalid, 5 Unknown, 0 Unchecked, 34861.42ms Time] [2021-11-13 18:17:35,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90891 states. [2021-11-13 18:17:38,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90891 to 61125. [2021-11-13 18:17:38,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61125 states, 42722 states have (on average 1.2747296474884136) internal successors, (54459), 43516 states have internal predecessors, (54459), 14016 states have call successors, (14016), 4268 states have call predecessors, (14016), 4386 states have return successors, (14683), 13900 states have call predecessors, (14683), 14011 states have call successors, (14683) [2021-11-13 18:17:38,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61125 states to 61125 states and 83158 transitions. [2021-11-13 18:17:38,984 INFO L78 Accepts]: Start accepts. Automaton has 61125 states and 83158 transitions. Word has length 168 [2021-11-13 18:17:38,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:17:38,985 INFO L470 AbstractCegarLoop]: Abstraction has 61125 states and 83158 transitions. [2021-11-13 18:17:38,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-13 18:17:38,986 INFO L276 IsEmpty]: Start isEmpty. Operand 61125 states and 83158 transitions. [2021-11-13 18:17:38,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-13 18:17:38,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:17:38,999 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 18:17:38,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-13 18:17:39,000 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:17:39,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:17:39,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1072016318, now seen corresponding path program 1 times [2021-11-13 18:17:39,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:17:39,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566614926] [2021-11-13 18:17:39,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:17:39,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:17:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:39,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:17:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:39,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:17:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:39,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:17:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:39,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:17:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:39,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:17:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:39,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:17:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:39,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:17:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:39,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:17:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:39,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-13 18:17:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:39,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-13 18:17:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:39,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-13 18:17:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:39,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-13 18:17:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:39,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-13 18:17:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:39,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-13 18:17:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:39,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-13 18:17:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:39,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-11-13 18:17:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:40,002 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-13 18:17:40,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:17:40,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566614926] [2021-11-13 18:17:40,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566614926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:17:40,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:17:40,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:17:40,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283639354] [2021-11-13 18:17:40,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:17:40,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:17:40,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:17:40,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:17:40,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:17:40,006 INFO L87 Difference]: Start difference. First operand 61125 states and 83158 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:17:42,159 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:44,379 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:46,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:48,552 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:18:15,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:18:15,775 INFO L93 Difference]: Finished difference Result 152045 states and 209351 transitions. [2021-11-13 18:18:15,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 18:18:15,776 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 181 [2021-11-13 18:18:15,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:18:16,104 INFO L225 Difference]: With dead ends: 152045 [2021-11-13 18:18:16,104 INFO L226 Difference]: Without dead ends: 90939 [2021-11-13 18:18:16,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-11-13 18:18:16,457 INFO L933 BasicCegarLoop]: 3859 mSDtfsCounter, 4725 mSDsluCounter, 6672 mSDsCounter, 0 mSdLazyCounter, 11626 mSolverCounterSat, 3590 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27245.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5035 SdHoareTripleChecker+Valid, 10531 SdHoareTripleChecker+Invalid, 15220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 105.90ms SdHoareTripleChecker+Time, 3590 IncrementalHoareTripleChecker+Valid, 11626 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30526.43ms IncrementalHoareTripleChecker+Time [2021-11-13 18:18:16,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5035 Valid, 10531 Invalid, 15220 Unknown, 0 Unchecked, 105.90ms Time], IncrementalHoareTripleChecker [3590 Valid, 11626 Invalid, 4 Unknown, 0 Unchecked, 30526.43ms Time] [2021-11-13 18:18:16,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90939 states. [2021-11-13 18:18:19,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90939 to 61125. [2021-11-13 18:18:19,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61125 states, 42722 states have (on average 1.2747296474884136) internal successors, (54459), 43516 states have internal predecessors, (54459), 14016 states have call successors, (14016), 4268 states have call predecessors, (14016), 4386 states have return successors, (14683), 13900 states have call predecessors, (14683), 14011 states have call successors, (14683) [2021-11-13 18:18:20,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61125 states to 61125 states and 83158 transitions. [2021-11-13 18:18:20,161 INFO L78 Accepts]: Start accepts. Automaton has 61125 states and 83158 transitions. Word has length 181 [2021-11-13 18:18:20,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:18:20,162 INFO L470 AbstractCegarLoop]: Abstraction has 61125 states and 83158 transitions. [2021-11-13 18:18:20,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:18:20,162 INFO L276 IsEmpty]: Start isEmpty. Operand 61125 states and 83158 transitions. [2021-11-13 18:18:20,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-13 18:18:20,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:18:20,171 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:18:20,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-13 18:18:20,171 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:18:20,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:18:20,172 INFO L85 PathProgramCache]: Analyzing trace with hash 725881791, now seen corresponding path program 1 times [2021-11-13 18:18:20,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:18:20,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431724719] [2021-11-13 18:18:20,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:20,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:18:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:20,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:18:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:20,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:18:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:20,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:18:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:20,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:18:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:20,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:18:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:20,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:18:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:20,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:18:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:20,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:18:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:20,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-13 18:18:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:20,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-13 18:18:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:20,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-13 18:18:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:20,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 18:18:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:21,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 18:18:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:21,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:18:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:21,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:18:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:21,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-13 18:18:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:21,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:18:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:21,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:18:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:21,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 18:18:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:21,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:18:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:21,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-13 18:18:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:21,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-11-13 18:18:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:21,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-11-13 18:18:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:21,255 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-13 18:18:21,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:18:21,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431724719] [2021-11-13 18:18:21,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431724719] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:18:21,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:18:21,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 18:18:21,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781318394] [2021-11-13 18:18:21,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:18:21,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 18:18:21,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:18:21,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 18:18:21,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:18:21,259 INFO L87 Difference]: Start difference. First operand 61125 states and 83158 transitions. Second operand has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 6 states have internal predecessors, (144), 4 states have call successors, (25), 7 states have call predecessors, (25), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-13 18:18:23,467 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:18:25,664 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:18:27,834 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:18:46,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:18:46,952 INFO L93 Difference]: Finished difference Result 130373 states and 181198 transitions. [2021-11-13 18:18:46,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 18:18:46,953 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 6 states have internal predecessors, (144), 4 states have call successors, (25), 7 states have call predecessors, (25), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 215 [2021-11-13 18:18:46,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:18:47,398 INFO L225 Difference]: With dead ends: 130373 [2021-11-13 18:18:47,398 INFO L226 Difference]: Without dead ends: 69267 [2021-11-13 18:18:47,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702 [2021-11-13 18:18:47,555 INFO L933 BasicCegarLoop]: 2284 mSDtfsCounter, 5035 mSDsluCounter, 3675 mSDsCounter, 0 mSdLazyCounter, 6407 mSolverCounterSat, 3686 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18622.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5226 SdHoareTripleChecker+Valid, 5959 SdHoareTripleChecker+Invalid, 10096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 75.05ms SdHoareTripleChecker+Time, 3686 IncrementalHoareTripleChecker+Valid, 6407 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21317.67ms IncrementalHoareTripleChecker+Time [2021-11-13 18:18:47,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5226 Valid, 5959 Invalid, 10096 Unknown, 0 Unchecked, 75.05ms Time], IncrementalHoareTripleChecker [3686 Valid, 6407 Invalid, 3 Unknown, 0 Unchecked, 21317.67ms Time] [2021-11-13 18:18:47,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69267 states. [2021-11-13 18:18:51,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69267 to 61317. [2021-11-13 18:18:51,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61317 states, 42866 states have (on average 1.2734334904119815) internal successors, (54587), 43660 states have internal predecessors, (54587), 14064 states have call successors, (14064), 4268 states have call predecessors, (14064), 4386 states have return successors, (14731), 13948 states have call predecessors, (14731), 14059 states have call successors, (14731) [2021-11-13 18:18:51,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61317 states to 61317 states and 83382 transitions. [2021-11-13 18:18:51,294 INFO L78 Accepts]: Start accepts. Automaton has 61317 states and 83382 transitions. Word has length 215 [2021-11-13 18:18:51,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:18:51,294 INFO L470 AbstractCegarLoop]: Abstraction has 61317 states and 83382 transitions. [2021-11-13 18:18:51,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 6 states have internal predecessors, (144), 4 states have call successors, (25), 7 states have call predecessors, (25), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-13 18:18:51,294 INFO L276 IsEmpty]: Start isEmpty. Operand 61317 states and 83382 transitions. [2021-11-13 18:18:51,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-13 18:18:51,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:18:51,304 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:18:51,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-13 18:18:51,305 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:18:51,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:18:51,305 INFO L85 PathProgramCache]: Analyzing trace with hash -943524419, now seen corresponding path program 1 times [2021-11-13 18:18:51,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:18:51,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103283131] [2021-11-13 18:18:51,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:51,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:18:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:18:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:18:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:18:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:18:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:18:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:18:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:18:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:18:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-13 18:18:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:18:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 18:18:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-13 18:18:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-13 18:18:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-13 18:18:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 18:18:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:18:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:18:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-13 18:18:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:18:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:18:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 18:18:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:18:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-11-13 18:18:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-11-13 18:18:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-11-13 18:18:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:52,392 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-13 18:18:52,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:18:52,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103283131] [2021-11-13 18:18:52,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103283131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:18:52,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:18:52,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:18:52,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214800573] [2021-11-13 18:18:52,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:18:52,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:18:52,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:18:52,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:18:52,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:18:52,395 INFO L87 Difference]: Start difference. First operand 61317 states and 83382 transitions. Second operand has 8 states, 8 states have (on average 18.625) internal successors, (149), 3 states have internal predecessors, (149), 2 states have call successors, (27), 7 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-13 18:18:54,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:18:56,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:19:09,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:09,873 INFO L93 Difference]: Finished difference Result 129909 states and 178774 transitions. [2021-11-13 18:19:09,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:19:09,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.625) internal successors, (149), 3 states have internal predecessors, (149), 2 states have call successors, (27), 7 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 227 [2021-11-13 18:19:09,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:10,326 INFO L225 Difference]: With dead ends: 129909 [2021-11-13 18:19:10,326 INFO L226 Difference]: Without dead ends: 68611 [2021-11-13 18:19:10,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:19:10,459 INFO L933 BasicCegarLoop]: 2278 mSDtfsCounter, 3082 mSDsluCounter, 2787 mSDsCounter, 0 mSdLazyCounter, 4470 mSolverCounterSat, 2624 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11557.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3297 SdHoareTripleChecker+Valid, 5065 SdHoareTripleChecker+Invalid, 7096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.85ms SdHoareTripleChecker+Time, 2624 IncrementalHoareTripleChecker+Valid, 4470 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13391.21ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:10,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3297 Valid, 5065 Invalid, 7096 Unknown, 0 Unchecked, 40.85ms Time], IncrementalHoareTripleChecker [2624 Valid, 4470 Invalid, 2 Unknown, 0 Unchecked, 13391.21ms Time] [2021-11-13 18:19:10,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68611 states.