./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--message--fusion--mptctl.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_29a0aa22-6392-4d76-8d6d-09c5f4e64e32/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a0aa22-6392-4d76-8d6d-09c5f4e64e32/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_29a0aa22-6392-4d76-8d6d-09c5f4e64e32/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a0aa22-6392-4d76-8d6d-09c5f4e64e32/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--message--fusion--mptctl.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a0aa22-6392-4d76-8d6d-09c5f4e64e32/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_29a0aa22-6392-4d76-8d6d-09c5f4e64e32/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 1cfba800a850f13ff72fddf9946e31aec208a19aa4b82d402046e12670b66199 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:37:43,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:37:43,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:37:43,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:37:43,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:37:43,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:37:43,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:37:43,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:37:43,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:37:43,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:37:43,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:37:43,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:37:43,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:37:43,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:37:43,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:37:43,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:37:43,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:37:43,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:37:43,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:37:43,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:37:43,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:37:43,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:37:43,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:37:43,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:37:43,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:37:43,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:37:43,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:37:43,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:37:43,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:37:43,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:37:43,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:37:43,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:37:43,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:37:43,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:37:43,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:37:43,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:37:43,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:37:43,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:37:43,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:37:43,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:37:43,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:37:43,932 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a0aa22-6392-4d76-8d6d-09c5f4e64e32/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 17:37:43,966 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:37:43,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:37:43,967 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:37:43,967 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:37:43,968 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:37:43,968 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:37:43,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:37:43,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:37:43,970 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:37:43,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:37:43,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:37:43,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:37:43,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:37:43,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:37:43,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:37:43,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:37:43,973 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:37:43,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:37:43,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:37:43,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:37:43,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:37:43,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:37:43,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:37:43,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:37:43,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:37:43,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:37:43,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:37:43,976 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:37:43,977 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:37:43,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:37:43,977 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:37:43,978 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_29a0aa22-6392-4d76-8d6d-09c5f4e64e32/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a0aa22-6392-4d76-8d6d-09c5f4e64e32/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1cfba800a850f13ff72fddf9946e31aec208a19aa4b82d402046e12670b66199 [2021-11-13 17:37:44,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:37:44,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:37:44,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:37:44,346 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:37:44,347 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:37:44,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a0aa22-6392-4d76-8d6d-09c5f4e64e32/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--message--fusion--mptctl.ko-entry_point.cil.out.i [2021-11-13 17:37:44,442 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a0aa22-6392-4d76-8d6d-09c5f4e64e32/bin/uautomizer-YU5uOKAj3y/data/e4c2d7973/11119c45851b45e080e919775f58a194/FLAG47964d2a1 [2021-11-13 17:37:45,595 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:37:45,596 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a0aa22-6392-4d76-8d6d-09c5f4e64e32/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--message--fusion--mptctl.ko-entry_point.cil.out.i [2021-11-13 17:37:45,664 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a0aa22-6392-4d76-8d6d-09c5f4e64e32/bin/uautomizer-YU5uOKAj3y/data/e4c2d7973/11119c45851b45e080e919775f58a194/FLAG47964d2a1 [2021-11-13 17:37:45,868 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a0aa22-6392-4d76-8d6d-09c5f4e64e32/bin/uautomizer-YU5uOKAj3y/data/e4c2d7973/11119c45851b45e080e919775f58a194 [2021-11-13 17:37:45,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:37:45,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:37:45,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:37:45,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:37:45,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:37:45,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:37:45" (1/1) ... [2021-11-13 17:37:45,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f427b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:45, skipping insertion in model container [2021-11-13 17:37:45,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:37:45" (1/1) ... [2021-11-13 17:37:45,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:37:46,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:37:48,362 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_29a0aa22-6392-4d76-8d6d-09c5f4e64e32/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--message--fusion--mptctl.ko-entry_point.cil.out.i[277952,277965] [2021-11-13 17:37:48,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:37:48,659 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:37:49,227 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_29a0aa22-6392-4d76-8d6d-09c5f4e64e32/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--message--fusion--mptctl.ko-entry_point.cil.out.i[277952,277965] [2021-11-13 17:37:49,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:37:49,365 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:37:49,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:49 WrapperNode [2021-11-13 17:37:49,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:37:49,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:37:49,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:37:49,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:37:49,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:49" (1/1) ... [2021-11-13 17:37:49,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:49" (1/1) ... [2021-11-13 17:37:49,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:37:49,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:37:49,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:37:49,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:37:49,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:49" (1/1) ... [2021-11-13 17:37:49,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:49" (1/1) ... [2021-11-13 17:37:49,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:49" (1/1) ... [2021-11-13 17:37:49,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:49" (1/1) ... [2021-11-13 17:37:50,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:49" (1/1) ... [2021-11-13 17:37:50,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:49" (1/1) ... [2021-11-13 17:37:50,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:49" (1/1) ... [2021-11-13 17:37:50,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:37:50,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:37:50,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:37:50,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:37:50,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:49" (1/1) ... [2021-11-13 17:37:50,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:37:50,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a0aa22-6392-4d76-8d6d-09c5f4e64e32/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:37:50,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a0aa22-6392-4d76-8d6d-09c5f4e64e32/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:37:50,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a0aa22-6392-4d76-8d6d-09c5f4e64e32/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:37:50,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 17:37:50,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 17:37:50,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 17:37:50,272 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 17:37:50,272 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~~dma_addr_t~0~TO~VOID [2021-11-13 17:37:50,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~~dma_addr_t~0~TO~VOID [2021-11-13 17:37:50,273 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-11-13 17:37:50,273 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-11-13 17:37:50,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mpctl_mutex [2021-11-13 17:37:50,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mpctl_mutex [2021-11-13 17:37:50,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 17:37:50,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 17:37:50,274 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_GetIocState [2021-11-13 17:37:50,274 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_GetIocState [2021-11-13 17:37:50,274 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2021-11-13 17:37:50,274 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2021-11-13 17:37:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure __scsi_iterate_devices [2021-11-13 17:37:50,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __scsi_iterate_devices [2021-11-13 17:37:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-13 17:37:50,275 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-13 17:37:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 17:37:50,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 17:37:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure mptctl_syscall_down [2021-11-13 17:37:50,276 INFO L138 BoogieDeclarations]: Found implementation of procedure mptctl_syscall_down [2021-11-13 17:37:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_device_driver_deregister [2021-11-13 17:37:50,276 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_device_driver_deregister [2021-11-13 17:37:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-13 17:37:50,277 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-13 17:37:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure mptctl_remove [2021-11-13 17:37:50,277 INFO L138 BoogieDeclarations]: Found implementation of procedure mptctl_remove [2021-11-13 17:37:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 17:37:50,277 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 17:37:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 17:37:50,278 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 17:37:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_put_msg_frame [2021-11-13 17:37:50,278 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_put_msg_frame [2021-11-13 17:37:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-13 17:37:50,278 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-13 17:37:50,279 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-13 17:37:50,279 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-13 17:37:50,279 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-13 17:37:50,279 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-13 17:37:50,279 INFO L130 BoogieDeclarations]: Found specification of procedure __mptctl_ioctl [2021-11-13 17:37:50,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __mptctl_ioctl [2021-11-13 17:37:50,280 INFO L130 BoogieDeclarations]: Found specification of procedure mptctl_do_mpt_command [2021-11-13 17:37:50,280 INFO L138 BoogieDeclarations]: Found implementation of procedure mptctl_do_mpt_command [2021-11-13 17:37:50,280 INFO L130 BoogieDeclarations]: Found specification of procedure mptctl_do_fw_download [2021-11-13 17:37:50,280 INFO L138 BoogieDeclarations]: Found implementation of procedure mptctl_do_fw_download [2021-11-13 17:37:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:37:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:37:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of__MPT_MGMT [2021-11-13 17:37:50,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of__MPT_MGMT [2021-11-13 17:37:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_put_msg_frame_hi_pri [2021-11-13 17:37:50,282 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_put_msg_frame_hi_pri [2021-11-13 17:37:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-13 17:37:50,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-13 17:37:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-13 17:37:50,283 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-13 17:37:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_free_fw_memory [2021-11-13 17:37:50,285 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_free_fw_memory [2021-11-13 17:37:50,285 INFO L130 BoogieDeclarations]: Found specification of procedure mptctl_do_taskmgmt [2021-11-13 17:37:50,285 INFO L138 BoogieDeclarations]: Found implementation of procedure mptctl_do_taskmgmt [2021-11-13 17:37:50,285 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-13 17:37:50,285 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-13 17:37:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:37:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 17:37:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_clear_taskmgmt_in_progress_flag [2021-11-13 17:37:50,286 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_clear_taskmgmt_in_progress_flag [2021-11-13 17:37:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure mptctl_timeout_expired [2021-11-13 17:37:50,287 INFO L138 BoogieDeclarations]: Found implementation of procedure mptctl_timeout_expired [2021-11-13 17:37:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-11-13 17:37:50,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-11-13 17:37:50,288 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-13 17:37:50,288 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-13 17:37:50,289 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-13 17:37:50,289 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-13 17:37:50,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mpctl_mutex [2021-11-13 17:37:50,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mpctl_mutex [2021-11-13 17:37:50,290 INFO L130 BoogieDeclarations]: Found specification of procedure mptctl_fasync [2021-11-13 17:37:50,290 INFO L138 BoogieDeclarations]: Found implementation of procedure mptctl_fasync [2021-11-13 17:37:50,290 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-13 17:37:50,290 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-13 17:37:50,290 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2021-11-13 17:37:50,290 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2021-11-13 17:37:50,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 17:37:50,291 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_set_taskmgmt_in_progress_flag [2021-11-13 17:37:50,291 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_set_taskmgmt_in_progress_flag [2021-11-13 17:37:50,291 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-13 17:37:50,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-13 17:37:50,291 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_verify_adapter [2021-11-13 17:37:50,292 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_verify_adapter [2021-11-13 17:37:50,293 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 17:37:50,293 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 17:37:50,293 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-13 17:37:50,293 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-13 17:37:50,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 17:37:50,293 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-13 17:37:50,294 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-13 17:37:50,295 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_deregister [2021-11-13 17:37:50,295 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_deregister [2021-11-13 17:37:50,296 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_sgl [2021-11-13 17:37:50,296 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_sgl [2021-11-13 17:37:50,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 17:37:50,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 17:37:50,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-13 17:37:50,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-13 17:37:50,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:37:50,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-13 17:37:50,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-13 17:37:50,298 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-13 17:37:50,298 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-13 17:37:50,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-13 17:37:50,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-13 17:37:50,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:37:50,299 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_get_msg_frame [2021-11-13 17:37:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_get_msg_frame [2021-11-13 17:37:50,300 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-13 17:37:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-13 17:37:50,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of__MPT_MGMT [2021-11-13 17:37:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of__MPT_MGMT [2021-11-13 17:37:50,304 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_send_handshake_request [2021-11-13 17:37:50,304 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_send_handshake_request [2021-11-13 17:37:50,305 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_register [2021-11-13 17:37:50,305 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_register [2021-11-13 17:37:50,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of__MPT_MGMT [2021-11-13 17:37:50,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of__MPT_MGMT [2021-11-13 17:37:50,308 INFO L130 BoogieDeclarations]: Found specification of procedure shost_priv [2021-11-13 17:37:50,308 INFO L138 BoogieDeclarations]: Found implementation of procedure shost_priv [2021-11-13 17:37:50,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:37:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-13 17:37:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:37:50,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:37:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_config [2021-11-13 17:37:50,315 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_config [2021-11-13 17:37:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_free_msg_frame [2021-11-13 17:37:50,315 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_free_msg_frame [2021-11-13 17:37:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-13 17:37:50,315 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-13 17:37:53,264 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 17:38:15,307 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:38:15,308 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 17:38:15,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:38:15 BoogieIcfgContainer [2021-11-13 17:38:15,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:38:15,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:38:15,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:38:15,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:38:15,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:37:45" (1/3) ... [2021-11-13 17:38:15,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b86dd81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:38:15, skipping insertion in model container [2021-11-13 17:38:15,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:49" (2/3) ... [2021-11-13 17:38:15,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b86dd81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:38:15, skipping insertion in model container [2021-11-13 17:38:15,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:38:15" (3/3) ... [2021-11-13 17:38:15,327 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--message--fusion--mptctl.ko-entry_point.cil.out.i [2021-11-13 17:38:15,334 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:38:15,334 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:38:15,425 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:38:15,445 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 17:38:15,449 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:38:15,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 1328 states, 997 states have (on average 1.415245737211635) internal successors, (1411), 1017 states have internal predecessors, (1411), 267 states have call successors, (267), 63 states have call predecessors, (267), 62 states have return successors, (263), 262 states have call predecessors, (263), 263 states have call successors, (263) [2021-11-13 17:38:15,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-13 17:38:15,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:38:15,549 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:38:15,550 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:38:15,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:38:15,555 INFO L85 PathProgramCache]: Analyzing trace with hash -811675881, now seen corresponding path program 1 times [2021-11-13 17:38:15,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:38:15,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980347162] [2021-11-13 17:38:15,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:38:15,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:38:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:16,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:38:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:16,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:16,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:38:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:16,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:38:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:16,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:16,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:38:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:16,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:16,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:38:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:16,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:16,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:16,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:38:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:16,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:16,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-13 17:38:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:16,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:16,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:38:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:16,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:16,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 17:38:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:16,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:16,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:38:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:16,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:16,958 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-11-13 17:38:16,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:38:16,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980347162] [2021-11-13 17:38:16,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980347162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:38:16,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:38:16,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:38:16,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502055310] [2021-11-13 17:38:16,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:38:16,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:38:16,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:38:17,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:38:17,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:38:17,025 INFO L87 Difference]: Start difference. First operand has 1328 states, 997 states have (on average 1.415245737211635) internal successors, (1411), 1017 states have internal predecessors, (1411), 267 states have call successors, (267), 63 states have call predecessors, (267), 62 states have return successors, (263), 262 states have call predecessors, (263), 263 states have call successors, (263) Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 17:38:19,149 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 17:38:21,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:23,992 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:27,782 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:31,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:33,954 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 17:38:34,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:38:34,826 INFO L93 Difference]: Finished difference Result 2702 states and 4048 transitions. [2021-11-13 17:38:34,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:38:34,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2021-11-13 17:38:34,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:38:34,864 INFO L225 Difference]: With dead ends: 2702 [2021-11-13 17:38:34,869 INFO L226 Difference]: Without dead ends: 1366 [2021-11-13 17:38:34,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:38:34,895 INFO L933 BasicCegarLoop]: 1869 mSDtfsCounter, 546 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 657 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16389.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 3591 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 122.66ms SdHoareTripleChecker+Time, 657 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17324.57ms IncrementalHoareTripleChecker+Time [2021-11-13 17:38:34,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [552 Valid, 3591 Invalid, 1842 Unknown, 0 Unchecked, 122.66ms Time], IncrementalHoareTripleChecker [657 Valid, 1180 Invalid, 5 Unknown, 0 Unchecked, 17324.57ms Time] [2021-11-13 17:38:34,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2021-11-13 17:38:35,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1315. [2021-11-13 17:38:35,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1315 states, 990 states have (on average 1.4090909090909092) internal successors, (1395), 1004 states have internal predecessors, (1395), 263 states have call successors, (263), 62 states have call predecessors, (263), 61 states have return successors, (252), 251 states have call predecessors, (252), 252 states have call successors, (252) [2021-11-13 17:38:35,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1910 transitions. [2021-11-13 17:38:35,079 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1910 transitions. Word has length 119 [2021-11-13 17:38:35,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:38:35,080 INFO L470 AbstractCegarLoop]: Abstraction has 1315 states and 1910 transitions. [2021-11-13 17:38:35,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 17:38:35,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1910 transitions. [2021-11-13 17:38:35,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-13 17:38:35,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:38:35,087 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:38:35,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:38:35,087 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:38:35,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:38:35,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1510126037, now seen corresponding path program 1 times [2021-11-13 17:38:35,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:38:35,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165876669] [2021-11-13 17:38:35,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:38:35,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:38:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:35,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:38:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:35,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:35,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:38:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:35,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:38:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:35,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:35,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:38:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:35,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:35,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:38:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:35,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:35,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:38:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:35,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:35,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-13 17:38:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:35,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:35,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:38:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:35,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:35,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 17:38:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:35,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:35,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:38:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:35,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:35,809 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-11-13 17:38:35,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:38:35,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165876669] [2021-11-13 17:38:35,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165876669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:38:35,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:38:35,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:38:35,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722396809] [2021-11-13 17:38:35,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:38:35,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:38:35,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:38:35,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:38:35,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:38:35,814 INFO L87 Difference]: Start difference. First operand 1315 states and 1910 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-13 17:38:37,893 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 17:38:40,005 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:42,909 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:44,941 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:46,996 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:50,594 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:52,691 WARN L515 Checker$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 17:38:56,943 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:58,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:39:02,868 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 17:39:03,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:39:03,661 INFO L93 Difference]: Finished difference Result 2761 states and 4011 transitions. [2021-11-13 17:39:03,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:39:03,662 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 119 [2021-11-13 17:39:03,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:39:03,678 INFO L225 Difference]: With dead ends: 2761 [2021-11-13 17:39:03,678 INFO L226 Difference]: Without dead ends: 1472 [2021-11-13 17:39:03,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 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 17:39:03,687 INFO L933 BasicCegarLoop]: 1885 mSDtfsCounter, 706 mSDsluCounter, 3293 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 683 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26274.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 5178 SdHoareTripleChecker+Invalid, 2212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.02ms SdHoareTripleChecker+Time, 683 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27518.52ms IncrementalHoareTripleChecker+Time [2021-11-13 17:39:03,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 5178 Invalid, 2212 Unknown, 0 Unchecked, 53.02ms Time], IncrementalHoareTripleChecker [683 Valid, 1519 Invalid, 10 Unknown, 0 Unchecked, 27518.52ms Time] [2021-11-13 17:39:03,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-11-13 17:39:03,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1400. [2021-11-13 17:39:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1054 states have (on average 1.4013282732447818) internal successors, (1477), 1069 states have internal predecessors, (1477), 273 states have call successors, (273), 73 states have call predecessors, (273), 72 states have return successors, (262), 260 states have call predecessors, (262), 262 states have call successors, (262) [2021-11-13 17:39:03,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 2012 transitions. [2021-11-13 17:39:03,797 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 2012 transitions. Word has length 119 [2021-11-13 17:39:03,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:39:03,803 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 2012 transitions. [2021-11-13 17:39:03,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-13 17:39:03,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 2012 transitions. [2021-11-13 17:39:03,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-13 17:39:03,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:39:03,815 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 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] [2021-11-13 17:39:03,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:39:03,816 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:39:03,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:39:03,817 INFO L85 PathProgramCache]: Analyzing trace with hash -623688502, now seen corresponding path program 1 times [2021-11-13 17:39:03,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:39:03,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337051127] [2021-11-13 17:39:03,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:39:03,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:39:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:04,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:39:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:04,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:04,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:39:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:04,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:39:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:04,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:04,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:39:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:04,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:04,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:39:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:04,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:04,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:39:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:04,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:04,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-13 17:39:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:04,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:04,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:39:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:04,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:04,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 17:39:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:04,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:04,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:39:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:04,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:04,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:39:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:04,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-13 17:39:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:04,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-13 17:39:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:04,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-13 17:39:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:04,482 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2021-11-13 17:39:04,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:39:04,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337051127] [2021-11-13 17:39:04,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337051127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:39:04,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:39:04,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:39:04,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830688833] [2021-11-13 17:39:04,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:39:04,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:39:04,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:39:04,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:39:04,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:39:04,488 INFO L87 Difference]: Start difference. First operand 1400 states and 2012 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 17:39:06,559 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:39:08,682 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:39:11,634 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:39:13,714 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:39:18,785 WARN L515 Checker$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 17:39:20,951 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:39:22,989 WARN L515 Checker$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 17:39:23,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:39:23,746 INFO L93 Difference]: Finished difference Result 3904 states and 5652 transitions. [2021-11-13 17:39:23,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:39:23,747 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), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 138 [2021-11-13 17:39:23,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:39:23,772 INFO L225 Difference]: With dead ends: 3904 [2021-11-13 17:39:23,773 INFO L226 Difference]: Without dead ends: 2544 [2021-11-13 17:39:23,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:39:23,783 INFO L933 BasicCegarLoop]: 2083 mSDtfsCounter, 2727 mSDsluCounter, 2559 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 1772 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17850.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2888 SdHoareTripleChecker+Valid, 4642 SdHoareTripleChecker+Invalid, 2911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.98ms SdHoareTripleChecker+Time, 1772 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18911.24ms IncrementalHoareTripleChecker+Time [2021-11-13 17:39:23,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2888 Valid, 4642 Invalid, 2911 Unknown, 0 Unchecked, 46.98ms Time], IncrementalHoareTripleChecker [1772 Valid, 1133 Invalid, 6 Unknown, 0 Unchecked, 18911.24ms Time] [2021-11-13 17:39:23,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2021-11-13 17:39:23,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 2426. [2021-11-13 17:39:23,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2426 states, 1839 states have (on average 1.401305057096248) internal successors, (2577), 1857 states have internal predecessors, (2577), 459 states have call successors, (459), 128 states have call predecessors, (459), 127 states have return successors, (448), 446 states have call predecessors, (448), 448 states have call successors, (448) [2021-11-13 17:39:23,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 3484 transitions. [2021-11-13 17:39:23,930 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 3484 transitions. Word has length 138 [2021-11-13 17:39:23,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:39:23,931 INFO L470 AbstractCegarLoop]: Abstraction has 2426 states and 3484 transitions. [2021-11-13 17:39:23,932 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), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 17:39:23,932 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 3484 transitions. [2021-11-13 17:39:23,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-13 17:39:23,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:39:23,937 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:39:23,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:39:23,937 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:39:23,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:39:23,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1205946540, now seen corresponding path program 1 times [2021-11-13 17:39:23,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:39:23,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095571796] [2021-11-13 17:39:23,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:39:23,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:39:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:39:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:39:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:39:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:39:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:39:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:39:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-13 17:39:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:39:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 17:39:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:39:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 17:39:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:39:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-13 17:39:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:39:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-13 17:39:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:24,759 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-13 17:39:24,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:39:24,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095571796] [2021-11-13 17:39:24,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095571796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:39:24,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:39:24,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:39:24,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183519143] [2021-11-13 17:39:24,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:39:24,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:39:24,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:39:24,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:39:24,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:39:24,764 INFO L87 Difference]: Start difference. First operand 2426 states and 3484 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, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 17:39:26,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:39:28,952 WARN L515 Checker$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 17:39:31,011 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:39:33,056 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:39:35,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:39:39,686 WARN L515 Checker$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 17:39:41,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:39:45,030 WARN L515 Checker$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 17:39:48,228 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:39:49,373 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:39:49,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:39:49,865 INFO L93 Difference]: Finished difference Result 2801 states and 4000 transitions. [2021-11-13 17:39:49,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:39:49,865 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, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 163 [2021-11-13 17:39:49,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:39:49,892 INFO L225 Difference]: With dead ends: 2801 [2021-11-13 17:39:49,893 INFO L226 Difference]: Without dead ends: 2798 [2021-11-13 17:39:49,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 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 17:39:49,897 INFO L933 BasicCegarLoop]: 1953 mSDtfsCounter, 1975 mSDsluCounter, 2228 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 872 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23621.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2145 SdHoareTripleChecker+Valid, 4181 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.35ms SdHoareTripleChecker+Time, 872 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24849.44ms IncrementalHoareTripleChecker+Time [2021-11-13 17:39:49,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2145 Valid, 4181 Invalid, 2287 Unknown, 0 Unchecked, 33.35ms Time], IncrementalHoareTripleChecker [872 Valid, 1408 Invalid, 7 Unknown, 0 Unchecked, 24849.44ms Time] [2021-11-13 17:39:49,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-11-13 17:39:50,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2655. [2021-11-13 17:39:50,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2655 states, 2000 states have (on average 1.39) internal successors, (2780), 2021 states have internal predecessors, (2780), 495 states have call successors, (495), 160 states have call predecessors, (495), 159 states have return successors, (485), 482 states have call predecessors, (485), 485 states have call successors, (485) [2021-11-13 17:39:50,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2655 states to 2655 states and 3760 transitions. [2021-11-13 17:39:50,051 INFO L78 Accepts]: Start accepts. Automaton has 2655 states and 3760 transitions. Word has length 163 [2021-11-13 17:39:50,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:39:50,053 INFO L470 AbstractCegarLoop]: Abstraction has 2655 states and 3760 transitions. [2021-11-13 17:39:50,054 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, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 17:39:50,054 INFO L276 IsEmpty]: Start isEmpty. Operand 2655 states and 3760 transitions. [2021-11-13 17:39:50,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-13 17:39:50,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:39:50,057 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:39:50,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 17:39:50,058 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:39:50,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:39:50,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1269110101, now seen corresponding path program 1 times [2021-11-13 17:39:50,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:39:50,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392606699] [2021-11-13 17:39:50,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:39:50,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:39:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:39:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:39:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:39:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:39:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:39:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:39:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-13 17:39:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:39:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 17:39:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:39:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 17:39:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:39:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-13 17:39:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:39:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:39:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-13 17:39:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:50,756 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-13 17:39:50,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:39:50,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392606699] [2021-11-13 17:39:50,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392606699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:39:50,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:39:50,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:39:50,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104161580] [2021-11-13 17:39:50,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:39:50,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:39:50,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:39:50,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:39:50,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:39:50,759 INFO L87 Difference]: Start difference. First operand 2655 states and 3760 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, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 17:39:52,832 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:39:54,982 WARN L515 Checker$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 17:39:57,593 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:39:59,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:40:01,070 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:40:03,875 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:40:07,875 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:40:10,009 WARN L515 Checker$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 17:40:13,386 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:40:16,069 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:40:18,093 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 17:40:18,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:40:18,574 INFO L93 Difference]: Finished difference Result 2796 states and 3995 transitions. [2021-11-13 17:40:18,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:40:18,575 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, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 164 [2021-11-13 17:40:18,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:40:18,601 INFO L225 Difference]: With dead ends: 2796 [2021-11-13 17:40:18,602 INFO L226 Difference]: Without dead ends: 2793 [2021-11-13 17:40:18,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:40:18,606 INFO L933 BasicCegarLoop]: 1849 mSDtfsCounter, 2137 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 749 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26361.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2343 SdHoareTripleChecker+Valid, 3538 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.28ms SdHoareTripleChecker+Time, 749 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27613.23ms IncrementalHoareTripleChecker+Time [2021-11-13 17:40:18,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2343 Valid, 3538 Invalid, 1941 Unknown, 0 Unchecked, 26.28ms Time], IncrementalHoareTripleChecker [749 Valid, 1185 Invalid, 7 Unknown, 0 Unchecked, 27613.23ms Time] [2021-11-13 17:40:18,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2793 states. [2021-11-13 17:40:18,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2793 to 2654. [2021-11-13 17:40:18,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2654 states, 2000 states have (on average 1.3895) internal successors, (2779), 2020 states have internal predecessors, (2779), 494 states have call successors, (494), 160 states have call predecessors, (494), 159 states have return successors, (485), 482 states have call predecessors, (485), 485 states have call successors, (485) [2021-11-13 17:40:18,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2654 states to 2654 states and 3758 transitions. [2021-11-13 17:40:18,760 INFO L78 Accepts]: Start accepts. Automaton has 2654 states and 3758 transitions. Word has length 164 [2021-11-13 17:40:18,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:40:18,761 INFO L470 AbstractCegarLoop]: Abstraction has 2654 states and 3758 transitions. [2021-11-13 17:40:18,761 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, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 17:40:18,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2654 states and 3758 transitions. [2021-11-13 17:40:18,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-13 17:40:18,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:40:18,765 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:40:18,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:40:18,766 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:40:18,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:40:18,766 INFO L85 PathProgramCache]: Analyzing trace with hash 686459511, now seen corresponding path program 1 times [2021-11-13 17:40:18,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:40:18,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270930596] [2021-11-13 17:40:18,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:40:18,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:40:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:40:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:40:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:40:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:40:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:40:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:19,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:40:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-13 17:40:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:40:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 17:40:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:40:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 17:40:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:40:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-13 17:40:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:40:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-13 17:40:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:19,335 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-13 17:40:19,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:40:19,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270930596] [2021-11-13 17:40:19,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270930596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:40:19,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:40:19,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:40:19,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940836881] [2021-11-13 17:40:19,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:40:19,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:40:19,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:40:19,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:40:19,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:40:19,339 INFO L87 Difference]: Start difference. First operand 2654 states and 3758 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, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 17:40:21,409 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:40:24,018 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:40:26,081 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:40:29,594 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:40:33,922 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:40:34,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:40:34,277 INFO L93 Difference]: Finished difference Result 2829 states and 4023 transitions. [2021-11-13 17:40:34,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:40:34,278 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, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 165 [2021-11-13 17:40:34,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:40:34,305 INFO L225 Difference]: With dead ends: 2829 [2021-11-13 17:40:34,306 INFO L226 Difference]: Without dead ends: 2825 [2021-11-13 17:40:34,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 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 17:40:34,311 INFO L933 BasicCegarLoop]: 1837 mSDtfsCounter, 1023 mSDsluCounter, 2333 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 980 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13981.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 4170 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.08ms SdHoareTripleChecker+Time, 980 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14739.88ms IncrementalHoareTripleChecker+Time [2021-11-13 17:40:34,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1045 Valid, 4170 Invalid, 1844 Unknown, 0 Unchecked, 25.08ms Time], IncrementalHoareTripleChecker [980 Valid, 859 Invalid, 5 Unknown, 0 Unchecked, 14739.88ms Time] [2021-11-13 17:40:34,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2021-11-13 17:40:34,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 2682. [2021-11-13 17:40:34,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2019 states have (on average 1.3848439821693908) internal successors, (2796), 2037 states have internal predecessors, (2796), 496 states have call successors, (496), 167 states have call predecessors, (496), 166 states have return successors, (489), 486 states have call predecessors, (489), 489 states have call successors, (489) [2021-11-13 17:40:34,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 3781 transitions. [2021-11-13 17:40:34,506 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 3781 transitions. Word has length 165 [2021-11-13 17:40:34,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:40:34,507 INFO L470 AbstractCegarLoop]: Abstraction has 2682 states and 3781 transitions. [2021-11-13 17:40:34,507 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, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 17:40:34,508 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 3781 transitions. [2021-11-13 17:40:34,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-13 17:40:34,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:40:34,512 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:40:34,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 17:40:34,512 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:40:34,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:40:34,513 INFO L85 PathProgramCache]: Analyzing trace with hash -195834728, now seen corresponding path program 1 times [2021-11-13 17:40:34,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:40:34,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033858243] [2021-11-13 17:40:34,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:40:34,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:40:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:34,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:40:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:34,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:34,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:40:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:34,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:40:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:34,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:34,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:40:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:34,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:34,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:40:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:34,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:34,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:40:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:34,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:34,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-13 17:40:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:34,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:34,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:40:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:35,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:35,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 17:40:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:35,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:35,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:40:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:35,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:35,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 17:40:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:35,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:35,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:40:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:35,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-13 17:40:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:35,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:35,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:40:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:35,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-13 17:40:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:35,138 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-13 17:40:35,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:40:35,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033858243] [2021-11-13 17:40:35,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033858243] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:40:35,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:40:35,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:40:35,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32202766] [2021-11-13 17:40:35,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:40:35,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:40:35,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:40:35,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:40:35,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:40:35,142 INFO L87 Difference]: Start difference. First operand 2682 states and 3781 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 17:40:37,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:40:39,364 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:40:41,421 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:40:42,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:40:43,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:40:45,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:40:47,064 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:40:51,435 WARN L515 Checker$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 17:40:55,441 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:40:55,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:40:55,849 INFO L93 Difference]: Finished difference Result 7621 states and 10874 transitions. [2021-11-13 17:40:55,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:40:55,849 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 166 [2021-11-13 17:40:55,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:40:55,895 INFO L225 Difference]: With dead ends: 7621 [2021-11-13 17:40:55,895 INFO L226 Difference]: Without dead ends: 4979 [2021-11-13 17:40:55,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 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 17:40:55,914 INFO L933 BasicCegarLoop]: 2435 mSDtfsCounter, 2295 mSDsluCounter, 2693 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 1519 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19283.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2451 SdHoareTripleChecker+Valid, 5128 SdHoareTripleChecker+Invalid, 2690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.34ms SdHoareTripleChecker+Time, 1519 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20382.42ms IncrementalHoareTripleChecker+Time [2021-11-13 17:40:55,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2451 Valid, 5128 Invalid, 2690 Unknown, 0 Unchecked, 31.34ms Time], IncrementalHoareTripleChecker [1519 Valid, 1167 Invalid, 4 Unknown, 0 Unchecked, 20382.42ms Time] [2021-11-13 17:40:55,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2021-11-13 17:40:56,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 4740. [2021-11-13 17:40:56,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4740 states, 3587 states have (on average 1.3841650404237524) internal successors, (4965), 3623 states have internal predecessors, (4965), 865 states have call successors, (865), 294 states have call predecessors, (865), 287 states have return successors, (892), 834 states have call predecessors, (892), 855 states have call successors, (892) [2021-11-13 17:40:56,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4740 states to 4740 states and 6722 transitions. [2021-11-13 17:40:56,223 INFO L78 Accepts]: Start accepts. Automaton has 4740 states and 6722 transitions. Word has length 166 [2021-11-13 17:40:56,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:40:56,225 INFO L470 AbstractCegarLoop]: Abstraction has 4740 states and 6722 transitions. [2021-11-13 17:40:56,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 17:40:56,226 INFO L276 IsEmpty]: Start isEmpty. Operand 4740 states and 6722 transitions. [2021-11-13 17:40:56,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-13 17:40:56,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:40:56,230 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:40:56,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 17:40:56,230 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:40:56,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:40:56,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1777147494, now seen corresponding path program 1 times [2021-11-13 17:40:56,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:40:56,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226880693] [2021-11-13 17:40:56,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:40:56,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:40:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:40:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:40:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:40:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:40:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:40:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:40:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-13 17:40:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:40:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 17:40:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:56,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:40:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 17:40:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:40:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-13 17:40:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:40:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:40:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-13 17:40:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:56,849 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-13 17:40:56,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:40:56,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226880693] [2021-11-13 17:40:56,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226880693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:40:56,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:40:56,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:40:56,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355757182] [2021-11-13 17:40:56,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:40:56,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:40:56,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:40:56,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:40:56,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:40:56,855 INFO L87 Difference]: Start difference. First operand 4740 states and 6722 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 17:40:58,940 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 17:41:01,527 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:41:03,618 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:41:08,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:41:11,502 WARN L515 Checker$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 17:41:14,630 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:41:16,674 WARN L515 Checker$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 17:41:17,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:41:17,119 INFO L93 Difference]: Finished difference Result 4947 states and 7070 transitions. [2021-11-13 17:41:17,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:41:17,119 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 167 [2021-11-13 17:41:17,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:41:17,161 INFO L225 Difference]: With dead ends: 4947 [2021-11-13 17:41:17,161 INFO L226 Difference]: Without dead ends: 4920 [2021-11-13 17:41:17,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 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 17:41:17,165 INFO L933 BasicCegarLoop]: 1937 mSDtfsCounter, 1965 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 875 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18900.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2128 SdHoareTripleChecker+Valid, 4137 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.55ms SdHoareTripleChecker+Time, 875 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19899.67ms IncrementalHoareTripleChecker+Time [2021-11-13 17:41:17,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2128 Valid, 4137 Invalid, 2280 Unknown, 0 Unchecked, 26.55ms Time], IncrementalHoareTripleChecker [875 Valid, 1398 Invalid, 7 Unknown, 0 Unchecked, 19899.67ms Time] [2021-11-13 17:41:17,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4920 states. [2021-11-13 17:41:17,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4920 to 4715. [2021-11-13 17:41:17,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4715 states, 3570 states have (on average 1.3840336134453781) internal successors, (4941), 3605 states have internal predecessors, (4941), 860 states have call successors, (860), 291 states have call predecessors, (860), 284 states have return successors, (888), 830 states have call predecessors, (888), 851 states have call successors, (888) [2021-11-13 17:41:17,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4715 states to 4715 states and 6689 transitions. [2021-11-13 17:41:17,458 INFO L78 Accepts]: Start accepts. Automaton has 4715 states and 6689 transitions. Word has length 167 [2021-11-13 17:41:17,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:41:17,459 INFO L470 AbstractCegarLoop]: Abstraction has 4715 states and 6689 transitions. [2021-11-13 17:41:17,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 17:41:17,459 INFO L276 IsEmpty]: Start isEmpty. Operand 4715 states and 6689 transitions. [2021-11-13 17:41:17,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-13 17:41:17,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:41:17,464 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 17:41:17,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 17:41:17,464 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:41:17,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:41:17,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1530304005, now seen corresponding path program 1 times [2021-11-13 17:41:17,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:41:17,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833069389] [2021-11-13 17:41:17,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:41:17,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:41:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:17,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:41:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:17,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:41:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:17,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:41:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:17,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:41:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:17,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:41:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:17,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:41:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:17,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:41:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:17,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:41:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:17,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:41:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:17,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:41:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:17,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:41:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:17,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-13 17:41:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:17,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:41:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:17,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:41:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:17,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:41:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:17,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 17:41:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:17,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:41:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:17,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:41:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:17,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:41:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:17,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 17:41:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:18,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:41:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:18,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:41:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:18,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-13 17:41:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:18,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:41:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:18,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:41:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:18,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-13 17:41:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:18,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-11-13 17:41:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:18,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 17:41:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:18,079 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-13 17:41:18,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:41:18,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833069389] [2021-11-13 17:41:18,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833069389] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:41:18,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:41:18,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:41:18,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036203493] [2021-11-13 17:41:18,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:41:18,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:41:18,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:41:18,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:41:18,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:41:18,084 INFO L87 Difference]: Start difference. First operand 4715 states and 6689 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-13 17:41:20,234 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:41:22,325 WARN L515 Checker$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 17:41:24,441 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:41:26,584 WARN L515 Checker$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 17:41:29,557 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:41:31,604 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:41:32,734 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:41:34,752 WARN L515 Checker$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 17:41:36,285 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:41:43,198 WARN L515 Checker$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 17:41:45,323 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:41:47,440 WARN L515 Checker$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 17:41:49,563 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:41:51,698 WARN L515 Checker$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 17:41:55,697 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:41:57,732 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:41:59,766 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:42:04,130 WARN L515 Checker$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 17:42:06,166 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:42:06,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:42:06,875 INFO L93 Difference]: Finished difference Result 7639 states and 10822 transitions. [2021-11-13 17:42:06,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:42:06,876 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 187 [2021-11-13 17:42:06,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:42:06,901 INFO L225 Difference]: With dead ends: 7639 [2021-11-13 17:42:06,902 INFO L226 Difference]: Without dead ends: 2962 [2021-11-13 17:42:06,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-13 17:42:06,931 INFO L933 BasicCegarLoop]: 1672 mSDtfsCounter, 1729 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 4077 mSolverCounterSat, 964 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46082.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1909 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 5058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.51ms SdHoareTripleChecker+Time, 964 IncrementalHoareTripleChecker+Valid, 4077 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48471.97ms IncrementalHoareTripleChecker+Time [2021-11-13 17:42:06,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1909 Valid, 2838 Invalid, 5058 Unknown, 0 Unchecked, 33.51ms Time], IncrementalHoareTripleChecker [964 Valid, 4077 Invalid, 17 Unknown, 0 Unchecked, 48471.97ms Time] [2021-11-13 17:42:06,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2021-11-13 17:42:07,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 2828. [2021-11-13 17:42:07,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2130 states have (on average 1.371361502347418) internal successors, (2921), 2152 states have internal predecessors, (2921), 513 states have call successors, (513), 189 states have call predecessors, (513), 184 states have return successors, (523), 494 states have call predecessors, (523), 504 states have call successors, (523) [2021-11-13 17:42:07,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 3957 transitions. [2021-11-13 17:42:07,100 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 3957 transitions. Word has length 187 [2021-11-13 17:42:07,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:42:07,101 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 3957 transitions. [2021-11-13 17:42:07,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-13 17:42:07,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 3957 transitions. [2021-11-13 17:42:07,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-13 17:42:07,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:42:07,107 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 17:42:07,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 17:42:07,107 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:42:07,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:42:07,108 INFO L85 PathProgramCache]: Analyzing trace with hash 986822464, now seen corresponding path program 1 times [2021-11-13 17:42:07,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:42:07,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982165934] [2021-11-13 17:42:07,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:42:07,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:42:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:42:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:42:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:42:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:42:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:42:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:42:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-13 17:42:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:42:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 17:42:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:42:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 17:42:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:42:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-13 17:42:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:42:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-13 17:42:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-13 17:42:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-13 17:42:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-11-13 17:42:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,749 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-13 17:42:07,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:42:07,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982165934] [2021-11-13 17:42:07,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982165934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:42:07,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:42:07,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:42:07,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015474186] [2021-11-13 17:42:07,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:42:07,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:42:07,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:42:07,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:42:07,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:42:07,752 INFO L87 Difference]: Start difference. First operand 2828 states and 3957 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-13 17:42:09,845 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 17:42:11,953 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:42:14,031 WARN L515 Checker$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 17:42:16,175 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:42:18,285 WARN L515 Checker$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 17:42:21,688 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:42:23,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:42:25,419 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:42:27,113 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:42:29,986 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:42:31,247 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:42:39,087 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:42:41,200 WARN L515 Checker$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 17:42:43,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:42:45,437 WARN L515 Checker$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 17:42:50,078 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:42:52,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:42:54,148 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:42:55,386 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:42:57,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:43:00,938 WARN L515 Checker$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 17:43:02,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:43:05,015 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:43:07,052 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:43:08,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:43:08,048 INFO L93 Difference]: Finished difference Result 6015 states and 8481 transitions. [2021-11-13 17:43:08,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 17:43:08,049 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 195 [2021-11-13 17:43:08,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:43:08,069 INFO L225 Difference]: With dead ends: 6015 [2021-11-13 17:43:08,069 INFO L226 Difference]: Without dead ends: 3260 [2021-11-13 17:43:08,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:43:08,084 INFO L933 BasicCegarLoop]: 1722 mSDtfsCounter, 2375 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 5384 mSolverCounterSat, 1474 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57063.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2562 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 6877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.26ms SdHoareTripleChecker+Time, 1474 IncrementalHoareTripleChecker+Valid, 5384 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59809.14ms IncrementalHoareTripleChecker+Time [2021-11-13 17:43:08,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2562 Valid, 3171 Invalid, 6877 Unknown, 0 Unchecked, 48.26ms Time], IncrementalHoareTripleChecker [1474 Valid, 5384 Invalid, 19 Unknown, 0 Unchecked, 59809.14ms Time] [2021-11-13 17:43:08,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2021-11-13 17:43:08,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 2980. [2021-11-13 17:43:08,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2980 states, 2260 states have (on average 1.3690265486725663) internal successors, (3094), 2282 states have internal predecessors, (3094), 523 states have call successors, (523), 201 states have call predecessors, (523), 196 states have return successors, (533), 504 states have call predecessors, (533), 514 states have call successors, (533) [2021-11-13 17:43:08,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 4150 transitions. [2021-11-13 17:43:08,233 INFO L78 Accepts]: Start accepts. Automaton has 2980 states and 4150 transitions. Word has length 195 [2021-11-13 17:43:08,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:43:08,234 INFO L470 AbstractCegarLoop]: Abstraction has 2980 states and 4150 transitions. [2021-11-13 17:43:08,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-13 17:43:08,234 INFO L276 IsEmpty]: Start isEmpty. Operand 2980 states and 4150 transitions. [2021-11-13 17:43:08,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-13 17:43:08,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:43:08,237 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 17:43:08,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 17:43:08,238 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:43:08,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:43:08,238 INFO L85 PathProgramCache]: Analyzing trace with hash 490689664, now seen corresponding path program 1 times [2021-11-13 17:43:08,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:43:08,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440210980] [2021-11-13 17:43:08,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:43:08,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:43:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:43:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:43:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:43:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:43:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:43:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:43:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:43:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:43:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:43:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:43:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:43:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-13 17:43:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:43:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:43:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:43:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 17:43:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:43:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:43:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:43:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 17:43:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:43:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:43:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-13 17:43:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:43:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:43:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-13 17:43:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-13 17:43:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-13 17:43:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-13 17:43:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:08,812 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-11-13 17:43:08,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:43:08,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440210980] [2021-11-13 17:43:08,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440210980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:43:08,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:43:08,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:43:08,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385230582] [2021-11-13 17:43:08,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:43:08,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:43:08,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:43:08,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:43:08,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:43:08,817 INFO L87 Difference]: Start difference. First operand 2980 states and 4150 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 17:43:10,898 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 17:43:13,092 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:43:15,189 WARN L515 Checker$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 17:43:17,299 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:43:19,954 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:43:22,031 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:43:28,032 WARN L515 Checker$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 17:43:30,151 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:43:33,668 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:43:35,706 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:43:38,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:43:40,912 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:43:42,955 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:43:43,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:43:43,751 INFO L93 Difference]: Finished difference Result 3247 states and 4587 transitions. [2021-11-13 17:43:43,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 17:43:43,751 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 194 [2021-11-13 17:43:43,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:43:43,767 INFO L225 Difference]: With dead ends: 3247 [2021-11-13 17:43:43,768 INFO L226 Difference]: Without dead ends: 3244 [2021-11-13 17:43:43,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:43:43,771 INFO L933 BasicCegarLoop]: 1735 mSDtfsCounter, 3842 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 3621 mSolverCounterSat, 2531 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32600.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3915 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 6162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.63ms SdHoareTripleChecker+Time, 2531 IncrementalHoareTripleChecker+Valid, 3621 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34553.51ms IncrementalHoareTripleChecker+Time [2021-11-13 17:43:43,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3915 Valid, 2525 Invalid, 6162 Unknown, 0 Unchecked, 37.63ms Time], IncrementalHoareTripleChecker [2531 Valid, 3621 Invalid, 10 Unknown, 0 Unchecked, 34553.51ms Time] [2021-11-13 17:43:43,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3244 states. [2021-11-13 17:43:43,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3244 to 2979. [2021-11-13 17:43:43,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2979 states, 2260 states have (on average 1.3672566371681416) internal successors, (3090), 2281 states have internal predecessors, (3090), 522 states have call successors, (522), 201 states have call predecessors, (522), 196 states have return successors, (533), 504 states have call predecessors, (533), 514 states have call successors, (533) [2021-11-13 17:43:43,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 4145 transitions. [2021-11-13 17:43:43,944 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 4145 transitions. Word has length 194 [2021-11-13 17:43:43,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:43:43,945 INFO L470 AbstractCegarLoop]: Abstraction has 2979 states and 4145 transitions. [2021-11-13 17:43:43,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 17:43:43,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 4145 transitions. [2021-11-13 17:43:43,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-11-13 17:43:43,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:43:43,955 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 17:43:43,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 17:43:43,956 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:43:43,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:43:43,957 INFO L85 PathProgramCache]: Analyzing trace with hash 980662467, now seen corresponding path program 1 times [2021-11-13 17:43:43,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:43:43,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858690875] [2021-11-13 17:43:43,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:43:43,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:43:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:43:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:43:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:43:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:43:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:43:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:43:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:43:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:43:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:43:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:43:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:43:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-13 17:43:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:43:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:43:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:43:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 17:43:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:43:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:43:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:43:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 17:43:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:43:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:43:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-13 17:43:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:43:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:43:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-13 17:43:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-13 17:43:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-11-13 17:43:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-11-13 17:43:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-11-13 17:43:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:43:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:43:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-11-13 17:43:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-11-13 17:43:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:43:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:44,713 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-13 17:43:44,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:43:44,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858690875] [2021-11-13 17:43:44,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858690875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:43:44,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:43:44,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 17:43:44,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494683225] [2021-11-13 17:43:44,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:43:44,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:43:44,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:43:44,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:43:44,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:43:44,718 INFO L87 Difference]: Start difference. First operand 2979 states and 4145 transitions. Second operand has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-13 17:43:46,804 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:43:48,895 WARN L515 Checker$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 17:43:51,012 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:43:53,093 WARN L515 Checker$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 17:43:55,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:43:58,566 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:44:00,628 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:44:01,943 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:44:03,038 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:44:05,057 WARN L515 Checker$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 17:44:07,069 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:44:08,217 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:44:16,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:44:18,538 WARN L515 Checker$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 17:44:20,661 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:44:22,770 WARN L515 Checker$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 17:44:27,596 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:44:29,622 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:44:31,052 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:44:33,088 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:44:35,626 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:44:37,660 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:44:41,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:44:43,886 WARN L515 Checker$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 17:44:45,933 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:44:48,364 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:44:52,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:44:52,521 INFO L93 Difference]: Finished difference Result 6258 states and 8815 transitions. [2021-11-13 17:44:52,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 17:44:52,522 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 283 [2021-11-13 17:44:52,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:44:52,535 INFO L225 Difference]: With dead ends: 6258 [2021-11-13 17:44:52,536 INFO L226 Difference]: Without dead ends: 3352 [2021-11-13 17:44:52,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-11-13 17:44:52,555 INFO L933 BasicCegarLoop]: 1742 mSDtfsCounter, 3210 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 6467 mSolverCounterSat, 1839 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64083.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3295 SdHoareTripleChecker+Valid, 3319 SdHoareTripleChecker+Invalid, 8326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 64.18ms SdHoareTripleChecker+Time, 1839 IncrementalHoareTripleChecker+Valid, 6467 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67275.02ms IncrementalHoareTripleChecker+Time [2021-11-13 17:44:52,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3295 Valid, 3319 Invalid, 8326 Unknown, 0 Unchecked, 64.18ms Time], IncrementalHoareTripleChecker [1839 Valid, 6467 Invalid, 20 Unknown, 0 Unchecked, 67275.02ms Time] [2021-11-13 17:44:52,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3352 states. [2021-11-13 17:44:52,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3352 to 3007. [2021-11-13 17:44:52,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 2281 states have (on average 1.3665059184568171) internal successors, (3117), 2307 states have internal predecessors, (3117), 525 states have call successors, (525), 201 states have call predecessors, (525), 200 states have return successors, (543), 508 states have call predecessors, (543), 517 states have call successors, (543) [2021-11-13 17:44:52,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4185 transitions. [2021-11-13 17:44:52,745 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4185 transitions. Word has length 283 [2021-11-13 17:44:52,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:44:52,748 INFO L470 AbstractCegarLoop]: Abstraction has 3007 states and 4185 transitions. [2021-11-13 17:44:52,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-13 17:44:52,748 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4185 transitions. [2021-11-13 17:44:52,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-11-13 17:44:52,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:44:52,757 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 17:44:52,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 17:44:52,758 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:44:52,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:44:52,759 INFO L85 PathProgramCache]: Analyzing trace with hash -391144831, now seen corresponding path program 1 times [2021-11-13 17:44:52,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:44:52,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989296737] [2021-11-13 17:44:52,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:44:52,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:44:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:44:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:44:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:44:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:44:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:44:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:44:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:44:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:44:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:44:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:44:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:44:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-13 17:44:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:44:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:44:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:44:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 17:44:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:44:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:44:53,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:44:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 17:44:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:44:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:44:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-13 17:44:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:44:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:44:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-13 17:44:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-13 17:44:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-11-13 17:44:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-11-13 17:44:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-11-13 17:44:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:44:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:44:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-11-13 17:44:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-11-13 17:44:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:44:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:53,641 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-13 17:44:53,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:44:53,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989296737] [2021-11-13 17:44:53,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989296737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:44:53,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:44:53,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 17:44:53,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832332941] [2021-11-13 17:44:53,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:44:53,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 17:44:53,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:44:53,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 17:44:53,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-13 17:44:53,645 INFO L87 Difference]: Start difference. First operand 3007 states and 4185 transitions. Second operand has 11 states, 11 states have (on average 13.0) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (27), 8 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2021-11-13 17:44:55,735 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:44:57,844 WARN L515 Checker$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 17:44:59,935 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:02,060 WARN L515 Checker$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 17:45:04,134 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:07,266 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:08,647 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:09,862 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:11,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:13,008 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:15,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:17,518 WARN L515 Checker$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 17:45:19,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:29,295 WARN L515 Checker$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 17:45:31,404 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:33,524 WARN L515 Checker$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 17:45:35,645 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:37,775 WARN L515 Checker$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 17:45:39,891 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:46,229 WARN L515 Checker$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 17:45:48,273 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:50,315 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:52,640 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:54,679 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:56,219 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:58,949 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:59,979 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:46:02,008 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:46:04,043 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:46:07,825 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:46:10,232 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:46:11,486 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:46:13,519 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:46:15,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:46:17,603 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:46:21,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:46:23,092 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:46:25,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:46:27,116 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:46:28,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:46:28,574 INFO L93 Difference]: Finished difference Result 6292 states and 8875 transitions. [2021-11-13 17:46:28,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 17:46:28,575 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.0) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (27), 8 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) Word has length 283 [2021-11-13 17:46:28,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:46:28,590 INFO L225 Difference]: With dead ends: 6292 [2021-11-13 17:46:28,591 INFO L226 Difference]: Without dead ends: 3358 [2021-11-13 17:46:28,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2021-11-13 17:46:28,606 INFO L933 BasicCegarLoop]: 1743 mSDtfsCounter, 3245 mSDsluCounter, 2653 mSDsCounter, 0 mSdLazyCounter, 9575 mSolverCounterSat, 1834 mSolverCounterUnsat, 29 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90016.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3327 SdHoareTripleChecker+Valid, 4396 SdHoareTripleChecker+Invalid, 11438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 78.29ms SdHoareTripleChecker+Time, 1834 IncrementalHoareTripleChecker+Valid, 9575 IncrementalHoareTripleChecker+Invalid, 29 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94226.80ms IncrementalHoareTripleChecker+Time [2021-11-13 17:46:28,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3327 Valid, 4396 Invalid, 11438 Unknown, 0 Unchecked, 78.29ms Time], IncrementalHoareTripleChecker [1834 Valid, 9575 Invalid, 29 Unknown, 0 Unchecked, 94226.80ms Time] [2021-11-13 17:46:28,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2021-11-13 17:46:28,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 3007. [2021-11-13 17:46:28,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 2281 states have (on average 1.3660675142481369) internal successors, (3116), 2307 states have internal predecessors, (3116), 525 states have call successors, (525), 201 states have call predecessors, (525), 200 states have return successors, (543), 508 states have call predecessors, (543), 517 states have call successors, (543) [2021-11-13 17:46:28,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4184 transitions. [2021-11-13 17:46:28,769 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4184 transitions. Word has length 283 [2021-11-13 17:46:28,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:46:28,770 INFO L470 AbstractCegarLoop]: Abstraction has 3007 states and 4184 transitions. [2021-11-13 17:46:28,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.0) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (27), 8 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2021-11-13 17:46:28,771 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4184 transitions. [2021-11-13 17:46:28,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-11-13 17:46:28,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:46:28,778 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 17:46:28,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 17:46:28,779 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:46:28,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:46:28,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1979492733, now seen corresponding path program 1 times [2021-11-13 17:46:28,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:46:28,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393303287] [2021-11-13 17:46:28,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:28,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:46:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:46:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:46:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:46:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:46:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:46:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:46:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:46:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:46:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:46:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:46:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:46:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-13 17:46:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:46:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:46:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:46:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 17:46:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:46:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:46:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:46:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 17:46:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:46:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:46:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-13 17:46:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:46:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:46:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-13 17:46:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-13 17:46:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-11-13 17:46:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-11-13 17:46:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-11-13 17:46:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:46:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:46:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-11-13 17:46:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-11-13 17:46:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:46:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,461 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-13 17:46:29,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:46:29,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393303287] [2021-11-13 17:46:29,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393303287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:46:29,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:46:29,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 17:46:29,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942555806] [2021-11-13 17:46:29,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:46:29,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:46:29,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:46:29,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:46:29,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:46:29,464 INFO L87 Difference]: Start difference. First operand 3007 states and 4184 transitions. Second operand has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (27), 9 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2021-11-13 17:46:31,544 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 17:46:33,666 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:46:35,750 WARN L515 Checker$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 17:46:37,858 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:46:40,007 WARN L515 Checker$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 17:46:43,335 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:46:45,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:46:47,496 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:46:58,437 WARN L515 Checker$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 17:47:00,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:47:02,743 WARN L515 Checker$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 17:47:04,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:47:06,976 WARN L515 Checker$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 17:47:10,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:47:12,385 WARN L515 Checker$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 17:47:19,433 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:47:21,170 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:47:24,266 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:47:26,310 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:47:28,354 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:47:34,522 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:47:36,570 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:47:42,270 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:47:44,318 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:47:46,366 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:47:48,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:48,614 INFO L93 Difference]: Finished difference Result 6404 states and 8974 transitions. [2021-11-13 17:47:48,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-13 17:47:48,614 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (27), 9 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) Word has length 283 [2021-11-13 17:47:48,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:48,628 INFO L225 Difference]: With dead ends: 6404 [2021-11-13 17:47:48,628 INFO L226 Difference]: Without dead ends: 3470 [2021-11-13 17:47:48,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2021-11-13 17:47:48,642 INFO L933 BasicCegarLoop]: 2651 mSDtfsCounter, 4786 mSDsluCounter, 2524 mSDsCounter, 0 mSdLazyCounter, 10665 mSolverCounterSat, 2689 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73807.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4862 SdHoareTripleChecker+Valid, 5175 SdHoareTripleChecker+Invalid, 13377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 93.30ms SdHoareTripleChecker+Time, 2689 IncrementalHoareTripleChecker+Valid, 10665 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78374.92ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:48,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4862 Valid, 5175 Invalid, 13377 Unknown, 0 Unchecked, 93.30ms Time], IncrementalHoareTripleChecker [2689 Valid, 10665 Invalid, 23 Unknown, 0 Unchecked, 78374.92ms Time] [2021-11-13 17:47:48,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3470 states. [2021-11-13 17:47:48,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3470 to 3158. [2021-11-13 17:47:48,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3158 states, 2392 states have (on average 1.3624581939799332) internal successors, (3259), 2420 states have internal predecessors, (3259), 550 states have call successors, (550), 219 states have call predecessors, (550), 215 states have return successors, (546), 528 states have call predecessors, (546), 534 states have call successors, (546) [2021-11-13 17:47:48,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3158 states to 3158 states and 4355 transitions. [2021-11-13 17:47:48,805 INFO L78 Accepts]: Start accepts. Automaton has 3158 states and 4355 transitions. Word has length 283 [2021-11-13 17:47:48,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:48,806 INFO L470 AbstractCegarLoop]: Abstraction has 3158 states and 4355 transitions. [2021-11-13 17:47:48,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (27), 9 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2021-11-13 17:47:48,807 INFO L276 IsEmpty]: Start isEmpty. Operand 3158 states and 4355 transitions. [2021-11-13 17:47:48,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-11-13 17:47:48,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:48,814 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 17:47:48,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 17:47:48,814 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:47:48,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:48,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1208793281, now seen corresponding path program 1 times [2021-11-13 17:47:48,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:47:48,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727361443] [2021-11-13 17:47:48,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:48,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:47:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:47:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:47:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:47:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:47:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:47:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:47:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:47:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:47:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:47:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:47:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:47:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-13 17:47:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:47:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:47:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:47:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 17:47:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:47:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:47:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:47:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 17:47:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:47:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:47:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-13 17:47:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:47:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:47:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-13 17:47:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-13 17:47:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-11-13 17:47:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-11-13 17:47:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-11-13 17:47:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:47:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:47:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-11-13 17:47:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-11-13 17:47:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:47:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-13 17:47:49,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:47:49,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727361443] [2021-11-13 17:47:49,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727361443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:49,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:49,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 17:47:49,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073314859] [2021-11-13 17:47:49,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:49,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:47:49,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:47:49,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:47:49,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:47:49,436 INFO L87 Difference]: Start difference. First operand 3158 states and 4355 transitions. Second operand has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-13 17:47:51,521 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:47:53,630 WARN L515 Checker$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 17:47:55,716 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:47:57,847 WARN L515 Checker$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 17:48:01,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:48:03,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:48:10,655 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:48:12,792 WARN L515 Checker$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 17:48:14,918 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:48:17,044 WARN L515 Checker$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 17:48:19,173 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:48:23,387 WARN L515 Checker$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 17:48:25,425 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:48:26,985 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:48:29,529 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:48:32,273 WARN L515 Checker$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 17:48:35,079 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:48:37,130 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:48:39,168 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:48:41,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:48:41,102 INFO L93 Difference]: Finished difference Result 6951 states and 9712 transitions. [2021-11-13 17:48:41,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 17:48:41,103 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 283 [2021-11-13 17:48:41,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:48:41,118 INFO L225 Difference]: With dead ends: 6951 [2021-11-13 17:48:41,118 INFO L226 Difference]: Without dead ends: 3866 [2021-11-13 17:48:41,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:48:41,127 INFO L933 BasicCegarLoop]: 1803 mSDtfsCounter, 3617 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 5314 mSolverCounterSat, 2519 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48194.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 3424 SdHoareTripleChecker+Invalid, 7851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 57.87ms SdHoareTripleChecker+Time, 2519 IncrementalHoareTripleChecker+Valid, 5314 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51171.60ms IncrementalHoareTripleChecker+Time [2021-11-13 17:48:41,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3757 Valid, 3424 Invalid, 7851 Unknown, 0 Unchecked, 57.87ms Time], IncrementalHoareTripleChecker [2519 Valid, 5314 Invalid, 18 Unknown, 0 Unchecked, 51171.60ms Time] [2021-11-13 17:48:41,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3866 states. [2021-11-13 17:48:41,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3866 to 3196. [2021-11-13 17:48:41,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3196 states, 2430 states have (on average 1.3559670781893005) internal successors, (3295), 2458 states have internal predecessors, (3295), 550 states have call successors, (550), 219 states have call predecessors, (550), 215 states have return successors, (546), 528 states have call predecessors, (546), 534 states have call successors, (546) [2021-11-13 17:48:41,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3196 states to 3196 states and 4391 transitions. [2021-11-13 17:48:41,325 INFO L78 Accepts]: Start accepts. Automaton has 3196 states and 4391 transitions. Word has length 283 [2021-11-13 17:48:41,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:48:41,326 INFO L470 AbstractCegarLoop]: Abstraction has 3196 states and 4391 transitions. [2021-11-13 17:48:41,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-13 17:48:41,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3196 states and 4391 transitions. [2021-11-13 17:48:41,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-13 17:48:41,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:48:41,334 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 17:48:41,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-13 17:48:41,335 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:48:41,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:48:41,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1681931101, now seen corresponding path program 1 times [2021-11-13 17:48:41,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:48:41,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394875382] [2021-11-13 17:48:41,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:48:41,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:48:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:48:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:48:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:48:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:48:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:48:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:48:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:48:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:48:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:48:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:48:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:48:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-13 17:48:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:48:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:48:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:48:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 17:48:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:48:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:48:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:48:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 17:48:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:48:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:48:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-13 17:48:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:48:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:48:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-13 17:48:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-13 17:48:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-11-13 17:48:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-13 17:48:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-11-13 17:48:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:48:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:48:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-11-13 17:48:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-11-13 17:48:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:48:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,458 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2021-11-13 17:48:42,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:48:42,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394875382] [2021-11-13 17:48:42,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394875382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:48:42,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:48:42,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 17:48:42,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827898961] [2021-11-13 17:48:42,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:48:42,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 17:48:42,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:48:42,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 17:48:42,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-13 17:48:42,465 INFO L87 Difference]: Start difference. First operand 3196 states and 4391 transitions. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 5 states have internal predecessors, (124), 3 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-13 17:48:44,550 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 17:48:46,707 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:48:48,805 WARN L515 Checker$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 17:48:50,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:48:53,014 WARN L515 Checker$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 17:48:56,816 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:48:58,914 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:08,493 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:10,734 WARN L515 Checker$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 17:49:12,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:15,125 WARN L515 Checker$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 17:49:17,277 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:19,477 WARN L515 Checker$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 17:49:21,660 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:23,846 WARN L515 Checker$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 17:49:26,000 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:31,497 WARN L515 Checker$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 17:49:33,549 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:35,592 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:37,630 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:40,898 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:42,203 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:44,240 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:45,747 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:47,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:53,130 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:55,176 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:57,232 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:59,282 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:01,343 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:04,783 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:06,851 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:08,590 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:11,144 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:12,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:50:12,815 INFO L93 Difference]: Finished difference Result 6582 states and 9124 transitions. [2021-11-13 17:50:12,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 17:50:12,815 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 5 states have internal predecessors, (124), 3 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 265 [2021-11-13 17:50:12,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:50:12,831 INFO L225 Difference]: With dead ends: 6582 [2021-11-13 17:50:12,831 INFO L226 Difference]: Without dead ends: 3431 [2021-11-13 17:50:12,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2021-11-13 17:50:12,841 INFO L933 BasicCegarLoop]: 1663 mSDtfsCounter, 3246 mSDsluCounter, 2395 mSDsCounter, 0 mSdLazyCounter, 8066 mSolverCounterSat, 2135 mSolverCounterUnsat, 30 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84662.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3346 SdHoareTripleChecker+Valid, 4058 SdHoareTripleChecker+Invalid, 10231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 70.34ms SdHoareTripleChecker+Time, 2135 IncrementalHoareTripleChecker+Valid, 8066 IncrementalHoareTripleChecker+Invalid, 30 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89681.92ms IncrementalHoareTripleChecker+Time [2021-11-13 17:50:12,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3346 Valid, 4058 Invalid, 10231 Unknown, 0 Unchecked, 70.34ms Time], IncrementalHoareTripleChecker [2135 Valid, 8066 Invalid, 30 Unknown, 0 Unchecked, 89681.92ms Time] [2021-11-13 17:50:12,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2021-11-13 17:50:13,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 3121. [2021-11-13 17:50:13,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3121 states, 2383 states have (on average 1.3600503566932438) internal successors, (3241), 2411 states have internal predecessors, (3241), 534 states have call successors, (534), 207 states have call predecessors, (534), 203 states have return successors, (530), 512 states have call predecessors, (530), 518 states have call successors, (530) [2021-11-13 17:50:13,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 4305 transitions. [2021-11-13 17:50:13,110 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 4305 transitions. Word has length 265 [2021-11-13 17:50:13,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:50:13,110 INFO L470 AbstractCegarLoop]: Abstraction has 3121 states and 4305 transitions. [2021-11-13 17:50:13,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 5 states have internal predecessors, (124), 3 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-13 17:50:13,111 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 4305 transitions. [2021-11-13 17:50:13,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-13 17:50:13,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:50:13,118 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:50:13,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-13 17:50:13,118 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:50:13,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:50:13,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1718307408, now seen corresponding path program 1 times [2021-11-13 17:50:13,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:50:13,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145785061] [2021-11-13 17:50:13,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:50:13,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:50:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:50:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:50:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:50:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:50:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:50:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-13 17:50:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:50:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 17:50:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:50:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 17:50:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-13 17:50:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-13 17:50:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-13 17:50:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-13 17:50:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-13 17:50:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-13 17:50:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-11-13 17:50:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:50:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-11-13 17:50:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:13,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-11-13 17:50:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:14,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:50:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:14,051 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2021-11-13 17:50:14,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:50:14,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145785061] [2021-11-13 17:50:14,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145785061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:50:14,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:50:14,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 17:50:14,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635859053] [2021-11-13 17:50:14,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:50:14,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 17:50:14,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:50:14,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 17:50:14,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-13 17:50:14,055 INFO L87 Difference]: Start difference. First operand 3121 states and 4305 transitions. Second operand has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (28), 8 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2021-11-13 17:50:16,143 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 17:50:18,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:20,392 WARN L515 Checker$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 17:50:24,476 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:26,590 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:38,959 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:41,117 WARN L515 Checker$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 17:50:43,268 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:45,423 WARN L515 Checker$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 17:50:47,577 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:49,789 WARN L515 Checker$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 17:50:51,947 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:54,097 WARN L515 Checker$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 17:50:56,253 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:58,402 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []