./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-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_255c537c-f514-47a4-b891-9ad67101b005/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_255c537c-f514-47a4-b891-9ad67101b005/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_255c537c-f514-47a4-b891-9ad67101b005/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_255c537c-f514-47a4-b891-9ad67101b005/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_255c537c-f514-47a4-b891-9ad67101b005/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_255c537c-f514-47a4-b891-9ad67101b005/bin/uautomizer-DrprNOufMa --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 91e04004830698389104523fd95ec19013bffc6ed609cfb90049e6e93edb2bb3 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:33:54,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:33:54,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:33:54,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:33:54,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:33:54,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:33:54,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:33:54,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:33:54,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:33:54,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:33:54,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:33:54,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:33:54,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:33:54,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:33:54,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:33:54,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:33:54,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:33:54,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:33:54,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:33:54,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:33:54,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:33:54,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:33:54,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:33:54,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:33:54,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:33:54,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:33:54,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:33:54,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:33:54,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:33:54,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:33:54,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:33:54,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:33:54,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:33:54,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:33:54,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:33:54,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:33:54,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:33:54,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:33:54,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:33:54,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:33:54,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:33:54,451 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_255c537c-f514-47a4-b891-9ad67101b005/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 19:33:54,470 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:33:54,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:33:54,471 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:33:54,471 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:33:54,471 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:33:54,471 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:33:54,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:33:54,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:33:54,472 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:33:54,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:33:54,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:33:54,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:33:54,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:33:54,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:33:54,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:33:54,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:33:54,473 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:33:54,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:33:54,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:33:54,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:33:54,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:33:54,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:33:54,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:33:54,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:33:54,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:33:54,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:33:54,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:33:54,475 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:33:54,475 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:33:54,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:33:54,475 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:33:54,475 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_255c537c-f514-47a4-b891-9ad67101b005/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_255c537c-f514-47a4-b891-9ad67101b005/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91e04004830698389104523fd95ec19013bffc6ed609cfb90049e6e93edb2bb3 [2021-12-06 19:33:54,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:33:54,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:33:54,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:33:54,671 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:33:54,671 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:33:54,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_255c537c-f514-47a4-b891-9ad67101b005/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i [2021-12-06 19:33:54,721 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_255c537c-f514-47a4-b891-9ad67101b005/bin/uautomizer-DrprNOufMa/data/91c5d3065/b16eaa0202b64879905b0da923dbc9db/FLAG36ba99427 [2021-12-06 19:33:55,267 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:33:55,268 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_255c537c-f514-47a4-b891-9ad67101b005/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i [2021-12-06 19:33:55,294 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_255c537c-f514-47a4-b891-9ad67101b005/bin/uautomizer-DrprNOufMa/data/91c5d3065/b16eaa0202b64879905b0da923dbc9db/FLAG36ba99427 [2021-12-06 19:33:55,718 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_255c537c-f514-47a4-b891-9ad67101b005/bin/uautomizer-DrprNOufMa/data/91c5d3065/b16eaa0202b64879905b0da923dbc9db [2021-12-06 19:33:55,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:33:55,725 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:33:55,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:33:55,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:33:55,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:33:55,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:33:55" (1/1) ... [2021-12-06 19:33:55,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79bc55a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:55, skipping insertion in model container [2021-12-06 19:33:55,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:33:55" (1/1) ... [2021-12-06 19:33:55,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:33:55,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:33:56,406 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_255c537c-f514-47a4-b891-9ad67101b005/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i[143316,143329] [2021-12-06 19:33:56,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:33:56,442 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:33:56,561 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_255c537c-f514-47a4-b891-9ad67101b005/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i[143316,143329] [2021-12-06 19:33:56,565 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:33:56,635 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:33:56,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:56 WrapperNode [2021-12-06 19:33:56,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:33:56,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:33:56,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:33:56,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:33:56,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:56" (1/1) ... [2021-12-06 19:33:56,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:56" (1/1) ... [2021-12-06 19:33:56,745 INFO L137 Inliner]: procedures = 142, calls = 664, calls flagged for inlining = 62, calls inlined = 59, statements flattened = 1981 [2021-12-06 19:33:56,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:33:56,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:33:56,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:33:56,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:33:56,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:56" (1/1) ... [2021-12-06 19:33:56,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:56" (1/1) ... [2021-12-06 19:33:56,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:56" (1/1) ... [2021-12-06 19:33:56,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:56" (1/1) ... [2021-12-06 19:33:56,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:56" (1/1) ... [2021-12-06 19:33:56,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:56" (1/1) ... [2021-12-06 19:33:56,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:56" (1/1) ... [2021-12-06 19:33:56,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:33:56,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:33:56,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:33:56,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:33:56,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:56" (1/1) ... [2021-12-06 19:33:56,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:33:56,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_255c537c-f514-47a4-b891-9ad67101b005/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:33:56,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_255c537c-f514-47a4-b891-9ad67101b005/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:33:56,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_255c537c-f514-47a4-b891-9ad67101b005/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:33:56,915 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-06 19:33:56,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-06 19:33:56,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-06 19:33:56,916 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2021-12-06 19:33:56,916 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2021-12-06 19:33:56,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-06 19:33:56,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 19:33:56,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 19:33:56,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 19:33:56,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 19:33:56,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-06 19:33:56,916 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-06 19:33:56,916 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-06 19:33:56,916 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-06 19:33:56,916 INFO L130 BoogieDeclarations]: Found specification of procedure retry_transmit [2021-12-06 19:33:56,917 INFO L138 BoogieDeclarations]: Found implementation of procedure retry_transmit [2021-12-06 19:33:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-06 19:33:56,917 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-06 19:33:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-06 19:33:56,917 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-06 19:33:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-06 19:33:56,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-06 19:33:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 19:33:56,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 19:33:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_close [2021-12-06 19:33:56,917 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_close [2021-12-06 19:33:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure remove_msg [2021-12-06 19:33:56,917 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_msg [2021-12-06 19:33:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2021-12-06 19:33:56,918 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2021-12-06 19:33:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure task_pid [2021-12-06 19:33:56,918 INFO L138 BoogieDeclarations]: Found implementation of procedure task_pid [2021-12-06 19:33:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-06 19:33:56,918 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-06 19:33:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unlock [2021-12-06 19:33:56,918 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unlock [2021-12-06 19:33:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 19:33:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-06 19:33:56,918 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-06 19:33:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 19:33:56,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 19:33:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-06 19:33:56,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-06 19:33:56,919 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 19:33:56,919 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 19:33:56,919 INFO L130 BoogieDeclarations]: Found specification of procedure add_msg [2021-12-06 19:33:56,919 INFO L138 BoogieDeclarations]: Found implementation of procedure add_msg [2021-12-06 19:33:56,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 19:33:56,919 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-12-06 19:33:56,919 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-12-06 19:33:56,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-06 19:33:56,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-06 19:33:56,919 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-06 19:33:56,919 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-06 19:33:56,919 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_poll [2021-12-06 19:33:56,919 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_poll [2021-12-06 19:33:56,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:33:56,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2021-12-06 19:33:56,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2021-12-06 19:33:56,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 19:33:56,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 19:33:56,920 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-06 19:33:56,920 INFO L130 BoogieDeclarations]: Found specification of procedure findClient [2021-12-06 19:33:56,920 INFO L138 BoogieDeclarations]: Found implementation of procedure findClient [2021-12-06 19:33:56,920 INFO L130 BoogieDeclarations]: Found specification of procedure put_char [2021-12-06 19:33:56,920 INFO L138 BoogieDeclarations]: Found implementation of procedure put_char [2021-12-06 19:33:56,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 19:33:56,920 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-06 19:33:56,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-06 19:33:56,920 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2021-12-06 19:33:56,921 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2021-12-06 19:33:56,921 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-06 19:33:56,921 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-06 19:33:56,921 INFO L130 BoogieDeclarations]: Found specification of procedure remove_client_block [2021-12-06 19:33:56,921 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_client_block [2021-12-06 19:33:56,921 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-06 19:33:56,921 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-06 19:33:56,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 19:33:56,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 19:33:56,921 INFO L130 BoogieDeclarations]: Found specification of procedure on_receive_block [2021-12-06 19:33:56,921 INFO L138 BoogieDeclarations]: Found implementation of procedure on_receive_block [2021-12-06 19:33:56,921 INFO L130 BoogieDeclarations]: Found specification of procedure flush [2021-12-06 19:33:56,921 INFO L138 BoogieDeclarations]: Found implementation of procedure flush [2021-12-06 19:33:56,922 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_set_termios [2021-12-06 19:33:56,922 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_set_termios [2021-12-06 19:33:56,922 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-06 19:33:56,922 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-06 19:33:56,922 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_ioctl [2021-12-06 19:33:56,922 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_ioctl [2021-12-06 19:33:56,922 INFO L130 BoogieDeclarations]: Found specification of procedure remove_from_tx_queue [2021-12-06 19:33:56,922 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_from_tx_queue [2021-12-06 19:33:56,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:33:56,922 INFO L130 BoogieDeclarations]: Found specification of procedure tty_lock [2021-12-06 19:33:56,922 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_lock [2021-12-06 19:33:56,922 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_transmit [2021-12-06 19:33:56,922 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_transmit [2021-12-06 19:33:56,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-06 19:33:56,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:33:56,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:33:57,204 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:33:57,206 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:33:57,346 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 19:34:00,345 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:34:00,357 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:34:00,357 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 19:34:00,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:34:00 BoogieIcfgContainer [2021-12-06 19:34:00,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:34:00,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:34:00,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:34:00,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:34:00,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:33:55" (1/3) ... [2021-12-06 19:34:00,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac86c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:34:00, skipping insertion in model container [2021-12-06 19:34:00,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:56" (2/3) ... [2021-12-06 19:34:00,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac86c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:34:00, skipping insertion in model container [2021-12-06 19:34:00,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:34:00" (3/3) ... [2021-12-06 19:34:00,369 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i [2021-12-06 19:34:00,374 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:34:00,374 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 19:34:00,416 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:34:00,423 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 [2021-12-06 19:34:00,423 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 19:34:00,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 750 states, 523 states have (on average 1.3919694072657744) internal successors, (728), 559 states have internal predecessors, (728), 185 states have call successors, (185), 41 states have call predecessors, (185), 40 states have return successors, (181), 171 states have call predecessors, (181), 181 states have call successors, (181) [2021-12-06 19:34:00,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-06 19:34:00,471 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:34:00,472 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:34:00,472 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:34:00,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:34:00,476 INFO L85 PathProgramCache]: Analyzing trace with hash -842815461, now seen corresponding path program 1 times [2021-12-06 19:34:00,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:34:00,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487737152] [2021-12-06 19:34:00,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:00,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:34:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:34:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:34:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 19:34:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:34:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 19:34:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 19:34:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 19:34:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 19:34:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 19:34:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:01,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 19:34:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:01,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 19:34:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:01,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 19:34:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:01,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 19:34:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:01,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 19:34:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:01,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 19:34:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:01,054 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-06 19:34:01,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:34:01,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487737152] [2021-12-06 19:34:01,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487737152] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:34:01,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:34:01,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:34:01,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733494167] [2021-12-06 19:34:01,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:34:01,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:34:01,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:34:01,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:34:01,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:34:01,084 INFO L87 Difference]: Start difference. First operand has 750 states, 523 states have (on average 1.3919694072657744) internal successors, (728), 559 states have internal predecessors, (728), 185 states have call successors, (185), 41 states have call predecessors, (185), 40 states have return successors, (181), 171 states have call predecessors, (181), 181 states have call successors, (181) Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-06 19:34:05,135 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:34:07,169 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:34:07,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:34:07,643 INFO L93 Difference]: Finished difference Result 2113 states and 3220 transitions. [2021-12-06 19:34:07,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:34:07,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 173 [2021-12-06 19:34:07,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:34:07,665 INFO L225 Difference]: With dead ends: 2113 [2021-12-06 19:34:07,665 INFO L226 Difference]: Without dead ends: 1341 [2021-12-06 19:34:07,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:34:07,675 INFO L933 BasicCegarLoop]: 1093 mSDtfsCounter, 1687 mSDsluCounter, 1989 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 1345 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1774 SdHoareTripleChecker+Valid, 3082 SdHoareTripleChecker+Invalid, 3207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1345 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:34:07,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1774 Valid, 3082 Invalid, 3207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1345 Valid, 1860 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2021-12-06 19:34:07,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2021-12-06 19:34:07,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1020. [2021-12-06 19:34:07,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 710 states have (on average 1.3816901408450704) internal successors, (981), 757 states have internal predecessors, (981), 245 states have call successors, (245), 65 states have call predecessors, (245), 64 states have return successors, (244), 229 states have call predecessors, (244), 244 states have call successors, (244) [2021-12-06 19:34:07,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1470 transitions. [2021-12-06 19:34:07,812 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1470 transitions. Word has length 173 [2021-12-06 19:34:07,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:34:07,812 INFO L470 AbstractCegarLoop]: Abstraction has 1020 states and 1470 transitions. [2021-12-06 19:34:07,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-06 19:34:07,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1470 transitions. [2021-12-06 19:34:07,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-06 19:34:07,817 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:34:07,817 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:34:07,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:34:07,817 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:34:07,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:34:07,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1799726521, now seen corresponding path program 1 times [2021-12-06 19:34:07,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:34:07,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438359623] [2021-12-06 19:34:07,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:07,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:34:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:07,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:34:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:07,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:34:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:07,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:07,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:07,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 19:34:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:07,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:34:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 19:34:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 19:34:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 19:34:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 19:34:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 19:34:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 19:34:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 19:34:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 19:34:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 19:34:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 19:34:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 19:34:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:08,099 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-06 19:34:08,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:34:08,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438359623] [2021-12-06 19:34:08,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438359623] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:34:08,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:34:08,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 19:34:08,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754935778] [2021-12-06 19:34:08,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:34:08,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 19:34:08,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:34:08,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 19:34:08,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:34:08,102 INFO L87 Difference]: Start difference. First operand 1020 states and 1470 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-06 19:34:14,423 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:34:15,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:34:15,444 INFO L93 Difference]: Finished difference Result 6130 states and 9736 transitions. [2021-12-06 19:34:15,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:34:15,444 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 184 [2021-12-06 19:34:15,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:34:15,481 INFO L225 Difference]: With dead ends: 6130 [2021-12-06 19:34:15,482 INFO L226 Difference]: Without dead ends: 5159 [2021-12-06 19:34:15,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:34:15,489 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 5912 mSDsluCounter, 3703 mSDsCounter, 0 mSdLazyCounter, 4287 mSolverCounterSat, 3977 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6253 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 8265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3977 IncrementalHoareTripleChecker+Valid, 4287 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:34:15,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6253 Valid, 5267 Invalid, 8265 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3977 Valid, 4287 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2021-12-06 19:34:15,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5159 states. [2021-12-06 19:34:15,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5159 to 3961. [2021-12-06 19:34:15,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3961 states, 2770 states have (on average 1.38014440433213) internal successors, (3823), 2951 states have internal predecessors, (3823), 929 states have call successors, (929), 246 states have call predecessors, (929), 261 states have return successors, (1209), 887 states have call predecessors, (1209), 928 states have call successors, (1209) [2021-12-06 19:34:15,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3961 states to 3961 states and 5961 transitions. [2021-12-06 19:34:15,700 INFO L78 Accepts]: Start accepts. Automaton has 3961 states and 5961 transitions. Word has length 184 [2021-12-06 19:34:15,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:34:15,700 INFO L470 AbstractCegarLoop]: Abstraction has 3961 states and 5961 transitions. [2021-12-06 19:34:15,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-06 19:34:15,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3961 states and 5961 transitions. [2021-12-06 19:34:15,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-06 19:34:15,703 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:34:15,703 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:34:15,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:34:15,704 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:34:15,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:34:15,704 INFO L85 PathProgramCache]: Analyzing trace with hash -2071293813, now seen corresponding path program 1 times [2021-12-06 19:34:15,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:34:15,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408086411] [2021-12-06 19:34:15,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:15,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:34:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:34:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:34:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 19:34:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:34:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 19:34:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 19:34:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 19:34:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 19:34:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 19:34:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 19:34:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 19:34:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 19:34:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 19:34:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 19:34:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 19:34:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-06 19:34:15,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:34:15,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408086411] [2021-12-06 19:34:15,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408086411] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:34:15,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:34:15,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 19:34:15,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099598582] [2021-12-06 19:34:15,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:34:15,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 19:34:15,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:34:15,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 19:34:15,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:34:15,963 INFO L87 Difference]: Start difference. First operand 3961 states and 5961 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-06 19:34:21,594 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:34:23,619 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:34:26,401 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:34:26,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:34:26,840 INFO L93 Difference]: Finished difference Result 24261 states and 40750 transitions. [2021-12-06 19:34:26,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:34:26,840 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 185 [2021-12-06 19:34:26,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:34:26,986 INFO L225 Difference]: With dead ends: 24261 [2021-12-06 19:34:26,986 INFO L226 Difference]: Without dead ends: 20349 [2021-12-06 19:34:27,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:34:27,010 INFO L933 BasicCegarLoop]: 1471 mSDtfsCounter, 5440 mSDsluCounter, 4187 mSDsCounter, 0 mSdLazyCounter, 5552 mSolverCounterSat, 3454 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5778 SdHoareTripleChecker+Valid, 5658 SdHoareTripleChecker+Invalid, 9008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3454 IncrementalHoareTripleChecker+Valid, 5552 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:34:27,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5778 Valid, 5658 Invalid, 9008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3454 Valid, 5552 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2021-12-06 19:34:27,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20349 states. [2021-12-06 19:34:27,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20349 to 15898. [2021-12-06 19:34:27,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15898 states, 11121 states have (on average 1.372988040643827) internal successors, (15269), 11823 states have internal predecessors, (15269), 3695 states have call successors, (3695), 972 states have call predecessors, (3695), 1081 states have return successors, (6352), 3592 states have call predecessors, (6352), 3694 states have call successors, (6352) [2021-12-06 19:34:27,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15898 states to 15898 states and 25316 transitions. [2021-12-06 19:34:27,886 INFO L78 Accepts]: Start accepts. Automaton has 15898 states and 25316 transitions. Word has length 185 [2021-12-06 19:34:27,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:34:27,887 INFO L470 AbstractCegarLoop]: Abstraction has 15898 states and 25316 transitions. [2021-12-06 19:34:27,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-06 19:34:27,887 INFO L276 IsEmpty]: Start isEmpty. Operand 15898 states and 25316 transitions. [2021-12-06 19:34:27,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-06 19:34:27,889 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:34:27,889 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:34:27,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 19:34:27,889 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:34:27,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:34:27,890 INFO L85 PathProgramCache]: Analyzing trace with hash -517979199, now seen corresponding path program 1 times [2021-12-06 19:34:27,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:34:27,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349629546] [2021-12-06 19:34:27,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:27,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:34:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:27,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:34:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:27,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:34:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:27,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:27,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:28,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 19:34:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:28,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:28,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:28,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:34:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:28,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:28,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:28,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 19:34:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:28,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 19:34:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:28,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 19:34:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:28,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:28,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:28,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 19:34:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:28,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:28,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:28,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 19:34:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:28,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:28,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:28,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 19:34:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:28,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 19:34:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:28,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 19:34:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:28,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 19:34:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:28,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 19:34:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:28,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 19:34:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:28,102 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-06 19:34:28,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:34:28,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349629546] [2021-12-06 19:34:28,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349629546] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:34:28,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:34:28,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 19:34:28,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948269053] [2021-12-06 19:34:28,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:34:28,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 19:34:28,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:34:28,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 19:34:28,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:34:28,103 INFO L87 Difference]: Start difference. First operand 15898 states and 25316 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-06 19:34:35,274 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:34:37,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:34:40,397 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:34:42,432 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:34:44,478 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:34:46,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:34:47,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:34:47,220 INFO L93 Difference]: Finished difference Result 96882 states and 173609 transitions. [2021-12-06 19:34:47,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:34:47,221 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 186 [2021-12-06 19:34:47,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:34:47,712 INFO L225 Difference]: With dead ends: 96882 [2021-12-06 19:34:47,712 INFO L226 Difference]: Without dead ends: 81033 [2021-12-06 19:34:47,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:34:47,808 INFO L933 BasicCegarLoop]: 1453 mSDtfsCounter, 5455 mSDsluCounter, 4175 mSDsCounter, 0 mSdLazyCounter, 5159 mSolverCounterSat, 3465 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5801 SdHoareTripleChecker+Valid, 5628 SdHoareTripleChecker+Invalid, 8630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3465 IncrementalHoareTripleChecker+Valid, 5159 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:34:47,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5801 Valid, 5628 Invalid, 8630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3465 Valid, 5159 Invalid, 6 Unknown, 0 Unchecked, 16.9s Time] [2021-12-06 19:34:47,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81033 states. [2021-12-06 19:34:50,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81033 to 64226. [2021-12-06 19:34:50,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64226 states, 44924 states have (on average 1.3657955658445375) internal successors, (61357), 47652 states have internal predecessors, (61357), 14832 states have call successors, (14832), 3876 states have call predecessors, (14832), 4469 states have return successors, (33531), 14653 states have call predecessors, (33531), 14831 states have call successors, (33531) [2021-12-06 19:34:50,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64226 states to 64226 states and 109720 transitions. [2021-12-06 19:34:50,697 INFO L78 Accepts]: Start accepts. Automaton has 64226 states and 109720 transitions. Word has length 186 [2021-12-06 19:34:50,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:34:50,697 INFO L470 AbstractCegarLoop]: Abstraction has 64226 states and 109720 transitions. [2021-12-06 19:34:50,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-06 19:34:50,698 INFO L276 IsEmpty]: Start isEmpty. Operand 64226 states and 109720 transitions. [2021-12-06 19:34:50,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-12-06 19:34:50,699 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:34:50,700 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:34:50,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 19:34:50,700 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:34:50,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:34:50,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1685994259, now seen corresponding path program 1 times [2021-12-06 19:34:50,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:34:50,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072069175] [2021-12-06 19:34:50,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:34:50,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:34:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:34:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:34:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 19:34:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:34:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 19:34:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 19:34:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 19:34:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 19:34:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 19:34:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:34:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:34:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 19:34:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 19:34:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 19:34:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 19:34:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 19:34:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 19:34:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:50,902 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-06 19:34:50,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:34:50,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072069175] [2021-12-06 19:34:50,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072069175] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:34:50,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:34:50,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 19:34:50,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282137979] [2021-12-06 19:34:50,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:34:50,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 19:34:50,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:34:50,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 19:34:50,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:34:50,903 INFO L87 Difference]: Start difference. First operand 64226 states and 109720 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-06 19:35:02,727 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:35:08,313 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:35:09,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:35:09,516 INFO L93 Difference]: Finished difference Result 380400 states and 725028 transitions. [2021-12-06 19:35:09,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:35:09,516 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 187 [2021-12-06 19:35:09,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:35:11,735 INFO L225 Difference]: With dead ends: 380400 [2021-12-06 19:35:11,736 INFO L226 Difference]: Without dead ends: 316223 [2021-12-06 19:35:12,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:35:12,129 INFO L933 BasicCegarLoop]: 1455 mSDtfsCounter, 6356 mSDsluCounter, 3379 mSDsCounter, 0 mSdLazyCounter, 5142 mSolverCounterSat, 4410 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6697 SdHoareTripleChecker+Valid, 4834 SdHoareTripleChecker+Invalid, 9554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4410 IncrementalHoareTripleChecker+Valid, 5142 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:35:12,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6697 Valid, 4834 Invalid, 9554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4410 Valid, 5142 Invalid, 2 Unknown, 0 Unchecked, 9.5s Time] [2021-12-06 19:35:12,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316223 states. [2021-12-06 19:35:23,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316223 to 253706. [2021-12-06 19:35:23,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253706 states, 178232 states have (on average 1.3572871313793258) internal successors, (241912), 188137 states have internal predecessors, (241912), 57400 states have call successors, (57400), 15166 states have call predecessors, (57400), 18073 states have return successors, (166006), 58029 states have call predecessors, (166006), 57399 states have call successors, (166006) [2021-12-06 19:35:25,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253706 states to 253706 states and 465318 transitions. [2021-12-06 19:35:25,588 INFO L78 Accepts]: Start accepts. Automaton has 253706 states and 465318 transitions. Word has length 187 [2021-12-06 19:35:25,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:35:25,589 INFO L470 AbstractCegarLoop]: Abstraction has 253706 states and 465318 transitions. [2021-12-06 19:35:25,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-06 19:35:25,590 INFO L276 IsEmpty]: Start isEmpty. Operand 253706 states and 465318 transitions. [2021-12-06 19:35:25,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-12-06 19:35:25,592 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:35:25,592 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 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] [2021-12-06 19:35:25,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 19:35:25,593 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:35:25,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:35:25,593 INFO L85 PathProgramCache]: Analyzing trace with hash -364532315, now seen corresponding path program 1 times [2021-12-06 19:35:25,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:35:25,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641725951] [2021-12-06 19:35:25,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:35:25,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:35:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:35:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:35:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:35:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:35:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 19:35:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:35:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:35:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:35:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:35:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:35:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 19:35:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 19:35:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 19:35:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:35:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:35:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 19:35:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:35:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:35:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 19:35:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:35:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:35:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 19:35:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 19:35:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 19:35:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 19:35:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 19:35:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 19:35:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-06 19:35:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:35:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:35:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:35:25,856 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2021-12-06 19:35:25,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:35:25,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641725951] [2021-12-06 19:35:25,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641725951] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:35:25,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:35:25,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 19:35:25,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655104519] [2021-12-06 19:35:25,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:35:25,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 19:35:25,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:35:25,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 19:35:25,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:35:25,857 INFO L87 Difference]: Start difference. First operand 253706 states and 465318 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 19:35:38,778 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:35:50,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:35:50,299 INFO L93 Difference]: Finished difference Result 809555 states and 1461995 transitions. [2021-12-06 19:35:50,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:35:50,300 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 203 [2021-12-06 19:35:50,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:35:54,225 INFO L225 Difference]: With dead ends: 809555 [2021-12-06 19:35:54,225 INFO L226 Difference]: Without dead ends: 555898 [2021-12-06 19:35:55,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-12-06 19:35:55,419 INFO L933 BasicCegarLoop]: 1547 mSDtfsCounter, 3279 mSDsluCounter, 2643 mSDsCounter, 0 mSdLazyCounter, 4257 mSolverCounterSat, 2323 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3473 SdHoareTripleChecker+Valid, 4190 SdHoareTripleChecker+Invalid, 6581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2323 IncrementalHoareTripleChecker+Valid, 4257 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:35:55,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3473 Valid, 4190 Invalid, 6581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2323 Valid, 4257 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2021-12-06 19:35:55,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555898 states. [2021-12-06 19:36:14,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555898 to 436488. [2021-12-06 19:36:15,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436488 states, 310077 states have (on average 1.3522673400477945) internal successors, (419307), 326655 states have internal predecessors, (419307), 92158 states have call successors, (92158), 28690 states have call predecessors, (92158), 34252 states have return successors, (264085), 94587 states have call predecessors, (264085), 92157 states have call successors, (264085) [2021-12-06 19:36:17,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436488 states to 436488 states and 775550 transitions. [2021-12-06 19:36:18,012 INFO L78 Accepts]: Start accepts. Automaton has 436488 states and 775550 transitions. Word has length 203 [2021-12-06 19:36:18,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:36:18,013 INFO L470 AbstractCegarLoop]: Abstraction has 436488 states and 775550 transitions. [2021-12-06 19:36:18,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 19:36:18,013 INFO L276 IsEmpty]: Start isEmpty. Operand 436488 states and 775550 transitions. [2021-12-06 19:36:18,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-12-06 19:36:18,015 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:36:18,015 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 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] [2021-12-06 19:36:18,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 19:36:18,015 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:36:18,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:36:18,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1017852908, now seen corresponding path program 1 times [2021-12-06 19:36:18,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:36:18,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486520970] [2021-12-06 19:36:18,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:36:18,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:36:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:36:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:36:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:36:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:36:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 19:36:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:36:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:36:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:36:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:36:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:36:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 19:36:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 19:36:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 19:36:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:36:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:36:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 19:36:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:36:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:36:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 19:36:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:36:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:36:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 19:36:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 19:36:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 19:36:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 19:36:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 19:36:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 19:36:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-06 19:36:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:36:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:36:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:18,285 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-12-06 19:36:18,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:36:18,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486520970] [2021-12-06 19:36:18,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486520970] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:36:18,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:36:18,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:36:18,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021988805] [2021-12-06 19:36:18,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:36:18,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:36:18,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:36:18,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:36:18,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:36:18,288 INFO L87 Difference]: Start difference. First operand 436488 states and 775550 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 19:36:29,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:36:30,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:36:32,679 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:36:42,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:36:42,606 INFO L93 Difference]: Finished difference Result 579757 states and 1024228 transitions. [2021-12-06 19:36:42,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:36:42,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 205 [2021-12-06 19:36:42,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:36:42,643 INFO L225 Difference]: With dead ends: 579757 [2021-12-06 19:36:42,643 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 19:36:44,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:36:44,493 INFO L933 BasicCegarLoop]: 1000 mSDtfsCounter, 1529 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 1708 mSolverCounterSat, 862 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 2518 SdHoareTripleChecker+Invalid, 2572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 862 IncrementalHoareTripleChecker+Valid, 1708 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:36:44,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1614 Valid, 2518 Invalid, 2572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [862 Valid, 1708 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2021-12-06 19:36:44,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 19:36:44,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 19:36:44,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:36:44,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 19:36:44,539 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 205 [2021-12-06 19:36:44,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:36:44,539 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 19:36:44,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 19:36:44,539 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 19:36:44,539 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 19:36:44,541 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 19:36:44,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 19:36:44,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.