./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b8a4a73-9c96-48d8-a754-6f49b0176ae2/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b8a4a73-9c96-48d8-a754-6f49b0176ae2/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b8a4a73-9c96-48d8-a754-6f49b0176ae2/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b8a4a73-9c96-48d8-a754-6f49b0176ae2/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b8a4a73-9c96-48d8-a754-6f49b0176ae2/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b8a4a73-9c96-48d8-a754-6f49b0176ae2/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 51be78885ca7a0fdf86d7aa977405871bdb86d4d67702760ccb1fc038e7f33e2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:22:24,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:22:24,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:22:24,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:22:24,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:22:24,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:22:24,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:22:24,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:22:24,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:22:24,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:22:24,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:22:24,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:22:24,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:22:24,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:22:24,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:22:24,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:22:24,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:22:24,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:22:24,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:22:24,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:22:24,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:22:24,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:22:24,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:22:24,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:22:24,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:22:24,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:22:24,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:22:24,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:22:24,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:22:24,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:22:24,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:22:24,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:22:24,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:22:24,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:22:24,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:22:24,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:22:24,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:22:24,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:22:24,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:22:24,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:22:24,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:22:24,810 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b8a4a73-9c96-48d8-a754-6f49b0176ae2/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:22:24,855 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:22:24,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:22:24,857 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:22:24,857 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:22:24,858 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:22:24,859 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:22:24,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:22:24,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:22:24,860 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:22:24,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:22:24,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:22:24,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:22:24,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:22:24,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:22:24,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:22:24,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:22:24,864 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:22:24,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:22:24,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:22:24,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:22:24,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:22:24,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:22:24,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:22:24,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:22:24,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:22:24,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:22:24,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:22:24,867 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:22:24,867 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:22:24,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:22:24,867 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_1b8a4a73-9c96-48d8-a754-6f49b0176ae2/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b8a4a73-9c96-48d8-a754-6f49b0176ae2/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51be78885ca7a0fdf86d7aa977405871bdb86d4d67702760ccb1fc038e7f33e2 [2022-11-02 20:22:25,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:22:25,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:22:25,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:22:25,262 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:22:25,263 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:22:25,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b8a4a73-9c96-48d8-a754-6f49b0176ae2/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i [2022-11-02 20:22:25,348 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b8a4a73-9c96-48d8-a754-6f49b0176ae2/bin/uautomizer-Dbtcem3rbc/data/71e941bb9/f51a7b54a2494bd4ad1b634692206bba/FLAG6f56814e5 [2022-11-02 20:22:26,535 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:22:26,539 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b8a4a73-9c96-48d8-a754-6f49b0176ae2/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i [2022-11-02 20:22:26,635 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b8a4a73-9c96-48d8-a754-6f49b0176ae2/bin/uautomizer-Dbtcem3rbc/data/71e941bb9/f51a7b54a2494bd4ad1b634692206bba/FLAG6f56814e5 [2022-11-02 20:22:26,774 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b8a4a73-9c96-48d8-a754-6f49b0176ae2/bin/uautomizer-Dbtcem3rbc/data/71e941bb9/f51a7b54a2494bd4ad1b634692206bba [2022-11-02 20:22:26,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:22:26,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:22:26,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:22:26,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:22:26,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:22:26,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:22:26" (1/1) ... [2022-11-02 20:22:26,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51f36b21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:26, skipping insertion in model container [2022-11-02 20:22:26,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:22:26" (1/1) ... [2022-11-02 20:22:26,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:22:27,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:22:30,833 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_1b8a4a73-9c96-48d8-a754-6f49b0176ae2/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i[420085,420098] [2022-11-02 20:22:31,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:22:31,135 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:22:31,915 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_1b8a4a73-9c96-48d8-a754-6f49b0176ae2/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i[420085,420098] [2022-11-02 20:22:31,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:22:32,244 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:22:32,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:32 WrapperNode [2022-11-02 20:22:32,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:22:32,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:22:32,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:22:32,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:22:32,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:32" (1/1) ... [2022-11-02 20:22:32,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:32" (1/1) ... [2022-11-02 20:22:32,759 INFO L138 Inliner]: procedures = 395, calls = 4058, calls flagged for inlining = 199, calls inlined = 146, statements flattened = 7281 [2022-11-02 20:22:32,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:22:32,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:22:32,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:22:32,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:22:32,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:32" (1/1) ... [2022-11-02 20:22:32,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:32" (1/1) ... [2022-11-02 20:22:32,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:32" (1/1) ... [2022-11-02 20:22:32,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:32" (1/1) ... [2022-11-02 20:22:33,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:32" (1/1) ... [2022-11-02 20:22:33,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:32" (1/1) ... [2022-11-02 20:22:33,330 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:32" (1/1) ... [2022-11-02 20:22:33,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:32" (1/1) ... [2022-11-02 20:22:33,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:22:33,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:22:33,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:22:33,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:22:33,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:32" (1/1) ... [2022-11-02 20:22:33,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:22:33,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b8a4a73-9c96-48d8-a754-6f49b0176ae2/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:22:33,592 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b8a4a73-9c96-48d8-a754-6f49b0176ae2/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:22:33,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b8a4a73-9c96-48d8-a754-6f49b0176ae2/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:22:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_wait_until_sent [2022-11-02 20:22:33,654 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_wait_until_sent [2022-11-02 20:22:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-02 20:22:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-02 20:22:33,654 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-02 20:22:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_start [2022-11-02 20:22:33,655 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_start [2022-11-02 20:22:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure usc_set_txidle [2022-11-02 20:22:33,655 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_set_txidle [2022-11-02 20:22:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure hdlcdev_ioctl [2022-11-02 20:22:33,655 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlcdev_ioctl [2022-11-02 20:22:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-02 20:22:33,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-02 20:22:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure usc_loopback_frame [2022-11-02 20:22:33,656 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_loopback_frame [2022-11-02 20:22:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2022-11-02 20:22:33,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2022-11-02 20:22:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure usc_start_receiver [2022-11-02 20:22:33,657 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_start_receiver [2022-11-02 20:22:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure usc_set_serial_signals [2022-11-02 20:22:33,657 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_set_serial_signals [2022-11-02 20:22:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_trace_block [2022-11-02 20:22:33,658 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_trace_block [2022-11-02 20:22:33,658 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-02 20:22:33,658 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-02 20:22:33,658 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-02 20:22:33,658 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-02 20:22:33,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mgsl_ops_disconnect_2 [2022-11-02 20:22:33,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mgsl_ops_disconnect_2 [2022-11-02 20:22:33,659 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_change_mtu [2022-11-02 20:22:33,659 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_change_mtu [2022-11-02 20:22:33,659 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-02 20:22:33,660 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-02 20:22:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-02 20:22:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure startup [2022-11-02 20:22:33,660 INFO L138 BoogieDeclarations]: Found implementation of procedure startup [2022-11-02 20:22:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure load_next_tx_holding_buffer [2022-11-02 20:22:33,661 INFO L138 BoogieDeclarations]: Found implementation of procedure load_next_tx_holding_buffer [2022-11-02 20:22:33,661 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-02 20:22:33,661 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-02 20:22:33,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_tty_port [2022-11-02 20:22:33,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_tty_port [2022-11-02 20:22:33,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:22:33,662 INFO L130 BoogieDeclarations]: Found specification of procedure dtr_rts [2022-11-02 20:22:33,662 INFO L138 BoogieDeclarations]: Found implementation of procedure dtr_rts [2022-11-02 20:22:33,663 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-02 20:22:33,663 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-02 20:22:33,663 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-02 20:22:33,664 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-02 20:22:33,664 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-11-02 20:22:33,664 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-11-02 20:22:33,664 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-02 20:22:33,664 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-02 20:22:33,665 INFO L130 BoogieDeclarations]: Found specification of procedure tiocmset [2022-11-02 20:22:33,665 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocmset [2022-11-02 20:22:33,666 INFO L130 BoogieDeclarations]: Found specification of procedure usc_OutDmaReg [2022-11-02 20:22:33,666 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_OutDmaReg [2022-11-02 20:22:33,667 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-02 20:22:33,668 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-02 20:22:33,668 INFO L130 BoogieDeclarations]: Found specification of procedure usc_loopmode_cancel_transmit [2022-11-02 20:22:33,668 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_loopmode_cancel_transmit [2022-11-02 20:22:33,668 INFO L130 BoogieDeclarations]: Found specification of procedure usc_load_txfifo [2022-11-02 20:22:33,669 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_load_txfifo [2022-11-02 20:22:33,669 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-02 20:22:33,669 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-02 20:22:33,670 INFO L130 BoogieDeclarations]: Found specification of procedure hdlcdev_tx_timeout [2022-11-02 20:22:33,670 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlcdev_tx_timeout [2022-11-02 20:22:33,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-02 20:22:33,671 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-02 20:22:33,671 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-02 20:22:33,671 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-02 20:22:33,672 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-02 20:22:33,672 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-02 20:22:33,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-02 20:22:33,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-02 20:22:33,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:22:33,673 INFO L130 BoogieDeclarations]: Found specification of procedure usc_reset [2022-11-02 20:22:33,674 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_reset [2022-11-02 20:22:33,674 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_free_frame_memory [2022-11-02 20:22:33,674 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_free_frame_memory [2022-11-02 20:22:33,674 INFO L130 BoogieDeclarations]: Found specification of procedure usc_InReg [2022-11-02 20:22:33,674 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_InReg [2022-11-02 20:22:33,675 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2022-11-02 20:22:33,675 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2022-11-02 20:22:33,675 INFO L130 BoogieDeclarations]: Found specification of procedure usc_enable_loopback [2022-11-02 20:22:33,676 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_enable_loopback [2022-11-02 20:22:33,676 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_load_tx_dma_buffer [2022-11-02 20:22:33,676 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_load_tx_dma_buffer [2022-11-02 20:22:33,677 INFO L130 BoogieDeclarations]: Found specification of procedure usc_DmaCmd [2022-11-02 20:22:33,677 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_DmaCmd [2022-11-02 20:22:33,677 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_flush_buffer [2022-11-02 20:22:33,678 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_flush_buffer [2022-11-02 20:22:33,678 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-02 20:22:33,678 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-02 20:22:33,678 INFO L130 BoogieDeclarations]: Found specification of procedure carrier_raised [2022-11-02 20:22:33,679 INFO L138 BoogieDeclarations]: Found implementation of procedure carrier_raised [2022-11-02 20:22:33,680 INFO L130 BoogieDeclarations]: Found specification of procedure usc_RTCmd [2022-11-02 20:22:33,681 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_RTCmd [2022-11-02 20:22:33,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:22:33,681 INFO L130 BoogieDeclarations]: Found specification of procedure usc_set_sdlc_mode [2022-11-02 20:22:33,681 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_set_sdlc_mode [2022-11-02 20:22:33,682 INFO L130 BoogieDeclarations]: Found specification of procedure usc_stop_receiver [2022-11-02 20:22:33,682 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_stop_receiver [2022-11-02 20:22:33,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:22:33,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:22:33,683 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-02 20:22:33,683 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-02 20:22:33,683 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-02 20:22:33,684 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_add_device [2022-11-02 20:22:33,684 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_add_device [2022-11-02 20:22:33,684 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_unthrottle [2022-11-02 20:22:33,685 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_unthrottle [2022-11-02 20:22:33,685 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_throttle [2022-11-02 20:22:33,685 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_throttle [2022-11-02 20:22:33,685 INFO L130 BoogieDeclarations]: Found specification of procedure usc_OutReg [2022-11-02 20:22:33,685 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_OutReg [2022-11-02 20:22:33,686 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-02 20:22:33,686 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-02 20:22:33,687 INFO L130 BoogieDeclarations]: Found specification of procedure tiocmget [2022-11-02 20:22:33,691 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocmget [2022-11-02 20:22:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_set_termios [2022-11-02 20:22:33,691 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_set_termios [2022-11-02 20:22:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-02 20:22:33,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-02 20:22:33,693 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-02 20:22:33,695 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-02 20:22:33,695 INFO L130 BoogieDeclarations]: Found specification of procedure usc_stop_transmitter [2022-11-02 20:22:33,695 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_stop_transmitter [2022-11-02 20:22:33,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:22:33,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:22:33,701 INFO L130 BoogieDeclarations]: Found specification of procedure remove_wait_queue [2022-11-02 20:22:33,701 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_wait_queue [2022-11-02 20:22:33,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-02 20:22:33,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-02 20:22:33,702 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_flush_chars [2022-11-02 20:22:33,702 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_flush_chars [2022-11-02 20:22:33,702 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-02 20:22:33,702 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-02 20:22:33,702 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-02 20:22:33,703 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-02 20:22:33,703 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_send_xchar [2022-11-02 20:22:33,703 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_send_xchar [2022-11-02 20:22:33,703 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_change_params [2022-11-02 20:22:33,703 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_change_params [2022-11-02 20:22:33,703 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-02 20:22:33,704 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-02 20:22:33,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-02 20:22:33,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-02 20:22:33,704 INFO L130 BoogieDeclarations]: Found specification of procedure usc_get_serial_signals [2022-11-02 20:22:33,704 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_get_serial_signals [2022-11-02 20:22:33,705 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_reset_rx_dma_buffers [2022-11-02 20:22:33,705 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_reset_rx_dma_buffers [2022-11-02 20:22:33,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-02 20:22:33,705 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-02 20:22:33,705 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-02 20:22:33,705 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-02 20:22:33,706 INFO L130 BoogieDeclarations]: Found specification of procedure usc_start_transmitter [2022-11-02 20:22:33,706 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_start_transmitter [2022-11-02 20:22:33,706 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-02 20:22:33,706 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-02 20:22:33,706 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2022-11-02 20:22:33,707 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2022-11-02 20:22:33,707 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-02 20:22:33,707 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-02 20:22:33,707 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_paranoia_check [2022-11-02 20:22:33,707 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_paranoia_check [2022-11-02 20:22:33,707 INFO L130 BoogieDeclarations]: Found specification of procedure usc_InDmaReg [2022-11-02 20:22:33,708 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_InDmaReg [2022-11-02 20:22:33,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:22:33,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:22:33,708 INFO L130 BoogieDeclarations]: Found specification of procedure usc_loopmode_active [2022-11-02 20:22:33,708 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_loopmode_active [2022-11-02 20:22:33,709 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_stop [2022-11-02 20:22:33,709 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_stop [2022-11-02 20:22:33,709 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-11-02 20:22:33,710 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-11-02 20:22:33,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:22:33,710 INFO L130 BoogieDeclarations]: Found specification of procedure synclink_remove_one [2022-11-02 20:22:33,710 INFO L138 BoogieDeclarations]: Found implementation of procedure synclink_remove_one [2022-11-02 20:22:33,710 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-02 20:22:33,710 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-02 20:22:33,711 INFO L130 BoogieDeclarations]: Found specification of procedure synclink_cleanup [2022-11-02 20:22:33,711 INFO L138 BoogieDeclarations]: Found implementation of procedure synclink_cleanup [2022-11-02 20:22:33,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-11-02 20:22:33,711 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-11-02 20:22:33,711 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-02 20:22:33,712 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-02 20:22:33,712 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-02 20:22:33,712 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-02 20:22:33,712 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-02 20:22:33,712 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-02 20:22:33,712 INFO L130 BoogieDeclarations]: Found specification of procedure add_wait_queue [2022-11-02 20:22:33,715 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wait_queue [2022-11-02 20:22:33,715 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_write_room [2022-11-02 20:22:33,715 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_write_room [2022-11-02 20:22:33,715 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_break [2022-11-02 20:22:33,715 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_break [2022-11-02 20:22:33,716 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_allocate_device [2022-11-02 20:22:33,716 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_allocate_device [2022-11-02 20:22:33,716 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-11-02 20:22:33,716 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-11-02 20:22:33,716 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_install [2022-11-02 20:22:33,716 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_install [2022-11-02 20:22:33,717 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hung_up_p [2022-11-02 20:22:33,717 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hung_up_p [2022-11-02 20:22:33,717 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_release_resources [2022-11-02 20:22:33,717 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_release_resources [2022-11-02 20:22:33,717 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-02 20:22:33,717 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-02 20:22:33,718 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-02 20:22:33,718 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-02 20:22:33,718 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-02 20:22:33,718 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-02 20:22:33,718 INFO L130 BoogieDeclarations]: Found specification of procedure usc_loopmode_send_done [2022-11-02 20:22:33,719 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_loopmode_send_done [2022-11-02 20:22:33,719 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-02 20:22:33,719 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-02 20:22:33,719 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-02 20:22:33,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-02 20:22:33,719 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-02 20:22:33,720 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-02 20:22:33,720 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_ioctl [2022-11-02 20:22:33,720 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_ioctl [2022-11-02 20:22:33,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_tty_port [2022-11-02 20:22:33,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_tty_port [2022-11-02 20:22:33,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:22:33,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-02 20:22:33,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-02 20:22:33,721 INFO L130 BoogieDeclarations]: Found specification of procedure msgl_get_icount [2022-11-02 20:22:33,721 INFO L138 BoogieDeclarations]: Found implementation of procedure msgl_get_icount [2022-11-02 20:22:33,721 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_chars_in_buffer [2022-11-02 20:22:33,722 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_chars_in_buffer [2022-11-02 20:22:33,722 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-02 20:22:33,722 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-02 20:22:33,722 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup [2022-11-02 20:22:33,722 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup [2022-11-02 20:22:33,722 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-02 20:22:33,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-02 20:22:33,723 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_put_char [2022-11-02 20:22:33,723 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_put_char [2022-11-02 20:22:33,723 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_program_hw [2022-11-02 20:22:33,723 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_program_hw [2022-11-02 20:22:33,724 INFO L130 BoogieDeclarations]: Found specification of procedure shutdown [2022-11-02 20:22:33,724 INFO L138 BoogieDeclarations]: Found implementation of procedure shutdown [2022-11-02 20:22:33,724 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_hangup [2022-11-02 20:22:33,725 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_hangup [2022-11-02 20:22:33,730 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-02 20:22:33,730 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-02 20:22:33,730 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2022-11-02 20:22:33,731 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2022-11-02 20:22:33,731 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-02 20:22:33,731 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-02 20:22:33,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:22:33,731 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_alloc_frame_memory [2022-11-02 20:22:33,731 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_alloc_frame_memory [2022-11-02 20:22:33,733 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2022-11-02 20:22:33,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2022-11-02 20:22:33,735 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-02 20:22:33,735 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-02 20:22:35,140 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:22:35,145 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:23:04,938 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:23:04,969 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:23:04,969 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:23:04,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:23:04 BoogieIcfgContainer [2022-11-02 20:23:04,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:23:04,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:23:04,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:23:04,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:23:04,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:22:26" (1/3) ... [2022-11-02 20:23:04,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708f15c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:23:04, skipping insertion in model container [2022-11-02 20:23:04,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:32" (2/3) ... [2022-11-02 20:23:04,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708f15c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:23:04, skipping insertion in model container [2022-11-02 20:23:04,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:23:04" (3/3) ... [2022-11-02 20:23:04,989 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i [2022-11-02 20:23:05,013 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:23:05,013 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:23:05,142 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:23:05,158 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@28196456, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:23:05,159 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:23:05,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 3211 states, 2199 states have (on average 1.4115507048658482) internal successors, (3104), 2276 states have internal predecessors, (3104), 890 states have call successors, (890), 120 states have call predecessors, (890), 120 states have return successors, (890), 870 states have call predecessors, (890), 890 states have call successors, (890) [2022-11-02 20:23:05,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 20:23:05,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:23:05,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:23:05,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:23:05,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:23:05,209 INFO L85 PathProgramCache]: Analyzing trace with hash -932140242, now seen corresponding path program 1 times [2022-11-02 20:23:05,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:23:05,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552479065] [2022-11-02 20:23:05,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:05,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:23:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:23:06,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 20:23:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:23:06,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:23:06,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:23:06,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552479065] [2022-11-02 20:23:06,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552479065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:23:06,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:23:06,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:23:06,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098674405] [2022-11-02 20:23:06,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:23:06,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:23:06,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:23:06,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:23:06,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:23:06,326 INFO L87 Difference]: Start difference. First operand has 3211 states, 2199 states have (on average 1.4115507048658482) internal successors, (3104), 2276 states have internal predecessors, (3104), 890 states have call successors, (890), 120 states have call predecessors, (890), 120 states have return successors, (890), 870 states have call predecessors, (890), 890 states have call successors, (890) Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:23:12,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:23:14,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:23:22,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:23:24,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:23:29,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:23:32,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:23:35,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:23:38,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:23:41,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:23:43,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:23:45,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:23:48,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:23:50,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:23:52,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:23:54,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:24:01,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:01,081 INFO L93 Difference]: Finished difference Result 9912 states and 15267 transitions. [2022-11-02 20:24:01,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:24:01,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-11-02 20:24:01,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:01,195 INFO L225 Difference]: With dead ends: 9912 [2022-11-02 20:24:01,195 INFO L226 Difference]: Without dead ends: 6698 [2022-11-02 20:24:01,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:01,243 INFO L413 NwaCegarLoop]: 5252 mSDtfsCounter, 5776 mSDsluCounter, 3732 mSDsCounter, 0 mSdLazyCounter, 5598 mSolverCounterSat, 2482 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6580 SdHoareTripleChecker+Valid, 8984 SdHoareTripleChecker+Invalid, 8095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2482 IncrementalHoareTripleChecker+Valid, 5598 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:01,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6580 Valid, 8984 Invalid, 8095 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2482 Valid, 5598 Invalid, 15 Unknown, 0 Unchecked, 53.5s Time] [2022-11-02 20:24:01,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6698 states. [2022-11-02 20:24:02,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6698 to 6348. [2022-11-02 20:24:02,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6348 states, 4342 states have (on average 1.410409949332105) internal successors, (6124), 4486 states have internal predecessors, (6124), 1767 states have call successors, (1767), 239 states have call predecessors, (1767), 238 states have return successors, (1761), 1721 states have call predecessors, (1761), 1761 states have call successors, (1761) [2022-11-02 20:24:02,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6348 states to 6348 states and 9652 transitions. [2022-11-02 20:24:02,153 INFO L78 Accepts]: Start accepts. Automaton has 6348 states and 9652 transitions. Word has length 23 [2022-11-02 20:24:02,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:02,155 INFO L495 AbstractCegarLoop]: Abstraction has 6348 states and 9652 transitions. [2022-11-02 20:24:02,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:24:02,156 INFO L276 IsEmpty]: Start isEmpty. Operand 6348 states and 9652 transitions. [2022-11-02 20:24:02,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 20:24:02,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:02,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:24:02,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:24:02,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:02,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:02,183 INFO L85 PathProgramCache]: Analyzing trace with hash 832541815, now seen corresponding path program 1 times [2022-11-02 20:24:02,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:02,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198781817] [2022-11-02 20:24:02,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:02,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:02,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 20:24:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:02,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:02,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:02,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198781817] [2022-11-02 20:24:02,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198781817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:02,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:02,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:24:02,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304735085] [2022-11-02 20:24:02,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:02,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:24:02,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:02,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:24:02,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:24:02,710 INFO L87 Difference]: Start difference. First operand 6348 states and 9652 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:24:03,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:03,948 INFO L93 Difference]: Finished difference Result 16115 states and 24400 transitions. [2022-11-02 20:24:03,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:24:03,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2022-11-02 20:24:03,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:04,049 INFO L225 Difference]: With dead ends: 16115 [2022-11-02 20:24:04,050 INFO L226 Difference]: Without dead ends: 9770 [2022-11-02 20:24:04,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:24:04,113 INFO L413 NwaCegarLoop]: 6281 mSDtfsCounter, 2584 mSDsluCounter, 4578 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2584 SdHoareTripleChecker+Valid, 10859 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:04,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2584 Valid, 10859 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:24:04,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9770 states. [2022-11-02 20:24:05,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9770 to 9758. [2022-11-02 20:24:05,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9758 states, 6615 states have (on average 1.3963718820861677) internal successors, (9237), 6823 states have internal predecessors, (9237), 2752 states have call successors, (2752), 391 states have call predecessors, (2752), 390 states have return successors, (2746), 2677 states have call predecessors, (2746), 2746 states have call successors, (2746) [2022-11-02 20:24:05,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9758 states to 9758 states and 14735 transitions. [2022-11-02 20:24:05,237 INFO L78 Accepts]: Start accepts. Automaton has 9758 states and 14735 transitions. Word has length 42 [2022-11-02 20:24:05,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:05,238 INFO L495 AbstractCegarLoop]: Abstraction has 9758 states and 14735 transitions. [2022-11-02 20:24:05,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:24:05,239 INFO L276 IsEmpty]: Start isEmpty. Operand 9758 states and 14735 transitions. [2022-11-02 20:24:05,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-02 20:24:05,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:05,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:24:05,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:24:05,247 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:05,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:05,259 INFO L85 PathProgramCache]: Analyzing trace with hash 93309406, now seen corresponding path program 1 times [2022-11-02 20:24:05,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:05,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331989199] [2022-11-02 20:24:05,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:05,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:05,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:24:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:05,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:24:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:05,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:05,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:05,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331989199] [2022-11-02 20:24:05,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331989199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:05,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:05,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:05,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394222450] [2022-11-02 20:24:05,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:05,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:05,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:05,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:05,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:05,852 INFO L87 Difference]: Start difference. First operand 9758 states and 14735 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:24:22,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:22,339 INFO L93 Difference]: Finished difference Result 21624 states and 33050 transitions. [2022-11-02 20:24:22,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:24:22,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2022-11-02 20:24:22,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:22,457 INFO L225 Difference]: With dead ends: 21624 [2022-11-02 20:24:22,457 INFO L226 Difference]: Without dead ends: 11869 [2022-11-02 20:24:22,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:24:22,539 INFO L413 NwaCegarLoop]: 5507 mSDtfsCounter, 3088 mSDsluCounter, 7865 mSDsCounter, 0 mSdLazyCounter, 5851 mSolverCounterSat, 1393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3535 SdHoareTripleChecker+Valid, 13372 SdHoareTripleChecker+Invalid, 7244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1393 IncrementalHoareTripleChecker+Valid, 5851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:22,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3535 Valid, 13372 Invalid, 7244 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1393 Valid, 5851 Invalid, 0 Unknown, 0 Unchecked, 15.5s Time] [2022-11-02 20:24:22,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11869 states. [2022-11-02 20:24:23,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11869 to 9762. [2022-11-02 20:24:23,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9762 states, 6619 states have (on average 1.3961323462758726) internal successors, (9241), 6827 states have internal predecessors, (9241), 2752 states have call successors, (2752), 391 states have call predecessors, (2752), 390 states have return successors, (2746), 2677 states have call predecessors, (2746), 2746 states have call successors, (2746) [2022-11-02 20:24:23,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9762 states to 9762 states and 14739 transitions. [2022-11-02 20:24:23,668 INFO L78 Accepts]: Start accepts. Automaton has 9762 states and 14739 transitions. Word has length 47 [2022-11-02 20:24:23,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:23,669 INFO L495 AbstractCegarLoop]: Abstraction has 9762 states and 14739 transitions. [2022-11-02 20:24:23,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:24:23,669 INFO L276 IsEmpty]: Start isEmpty. Operand 9762 states and 14739 transitions. [2022-11-02 20:24:23,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-02 20:24:23,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:23,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:24:23,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:24:23,676 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:23,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:23,678 INFO L85 PathProgramCache]: Analyzing trace with hash -896290569, now seen corresponding path program 1 times [2022-11-02 20:24:23,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:23,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708942697] [2022-11-02 20:24:23,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:23,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:24,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:24:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:24,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:24:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:24,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:24,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708942697] [2022-11-02 20:24:24,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708942697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:24,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:24,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:24,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566248220] [2022-11-02 20:24:24,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:24,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:24,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:24,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:24,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:24,463 INFO L87 Difference]: Start difference. First operand 9762 states and 14739 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:24:38,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:38,042 INFO L93 Difference]: Finished difference Result 20713 states and 31493 transitions. [2022-11-02 20:24:38,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:24:38,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2022-11-02 20:24:38,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:38,116 INFO L225 Difference]: With dead ends: 20713 [2022-11-02 20:24:38,117 INFO L226 Difference]: Without dead ends: 10954 [2022-11-02 20:24:38,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:24:38,165 INFO L413 NwaCegarLoop]: 4788 mSDtfsCounter, 6488 mSDsluCounter, 4573 mSDsCounter, 0 mSdLazyCounter, 3720 mSolverCounterSat, 2972 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6914 SdHoareTripleChecker+Valid, 9361 SdHoareTripleChecker+Invalid, 6692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2972 IncrementalHoareTripleChecker+Valid, 3720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:38,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6914 Valid, 9361 Invalid, 6692 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2972 Valid, 3720 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2022-11-02 20:24:38,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10954 states. [2022-11-02 20:24:38,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10954 to 9764. [2022-11-02 20:24:39,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9764 states, 6621 states have (on average 1.3958616523183809) internal successors, (9242), 6829 states have internal predecessors, (9242), 2752 states have call successors, (2752), 391 states have call predecessors, (2752), 390 states have return successors, (2746), 2677 states have call predecessors, (2746), 2746 states have call successors, (2746) [2022-11-02 20:24:39,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9764 states to 9764 states and 14740 transitions. [2022-11-02 20:24:39,072 INFO L78 Accepts]: Start accepts. Automaton has 9764 states and 14740 transitions. Word has length 50 [2022-11-02 20:24:39,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:39,075 INFO L495 AbstractCegarLoop]: Abstraction has 9764 states and 14740 transitions. [2022-11-02 20:24:39,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:24:39,075 INFO L276 IsEmpty]: Start isEmpty. Operand 9764 states and 14740 transitions. [2022-11-02 20:24:39,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-02 20:24:39,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:39,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:24:39,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:24:39,080 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:39,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:39,080 INFO L85 PathProgramCache]: Analyzing trace with hash -818435989, now seen corresponding path program 1 times [2022-11-02 20:24:39,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:39,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283377950] [2022-11-02 20:24:39,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:39,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:39,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:24:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:39,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:24:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:39,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 20:24:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:39,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:39,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:39,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283377950] [2022-11-02 20:24:39,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283377950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:39,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:39,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:39,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869835294] [2022-11-02 20:24:39,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:39,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:39,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:39,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:39,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:39,529 INFO L87 Difference]: Start difference. First operand 9764 states and 14740 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:24:43,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:24:48,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:24:52,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:24:55,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:24:58,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:25:01,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:25:03,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:25:06,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:25:08,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:25:13,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:13,282 INFO L93 Difference]: Finished difference Result 10468 states and 15991 transitions. [2022-11-02 20:25:13,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:13,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 56 [2022-11-02 20:25:13,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:13,348 INFO L225 Difference]: With dead ends: 10468 [2022-11-02 20:25:13,348 INFO L226 Difference]: Without dead ends: 10465 [2022-11-02 20:25:13,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:25:13,356 INFO L413 NwaCegarLoop]: 4230 mSDtfsCounter, 6132 mSDsluCounter, 2390 mSDsCounter, 0 mSdLazyCounter, 3590 mSolverCounterSat, 3670 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6636 SdHoareTripleChecker+Valid, 6620 SdHoareTripleChecker+Invalid, 7268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3670 IncrementalHoareTripleChecker+Valid, 3590 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:13,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6636 Valid, 6620 Invalid, 7268 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3670 Valid, 3590 Invalid, 8 Unknown, 0 Unchecked, 32.9s Time] [2022-11-02 20:25:13,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10465 states. [2022-11-02 20:25:14,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10465 to 9763. [2022-11-02 20:25:14,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9763 states, 6621 states have (on average 1.3957106177314604) internal successors, (9241), 6828 states have internal predecessors, (9241), 2751 states have call successors, (2751), 391 states have call predecessors, (2751), 390 states have return successors, (2746), 2677 states have call predecessors, (2746), 2746 states have call successors, (2746) [2022-11-02 20:25:14,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9763 states to 9763 states and 14738 transitions. [2022-11-02 20:25:14,378 INFO L78 Accepts]: Start accepts. Automaton has 9763 states and 14738 transitions. Word has length 56 [2022-11-02 20:25:14,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:14,378 INFO L495 AbstractCegarLoop]: Abstraction has 9763 states and 14738 transitions. [2022-11-02 20:25:14,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:25:14,379 INFO L276 IsEmpty]: Start isEmpty. Operand 9763 states and 14738 transitions. [2022-11-02 20:25:14,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-02 20:25:14,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:14,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:14,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:25:14,384 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:14,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:14,385 INFO L85 PathProgramCache]: Analyzing trace with hash 396706689, now seen corresponding path program 1 times [2022-11-02 20:25:14,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:14,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229502237] [2022-11-02 20:25:14,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:14,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:14,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:25:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:14,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:25:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:14,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 20:25:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:14,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:14,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:14,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229502237] [2022-11-02 20:25:14,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229502237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:14,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:14,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:25:14,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326337774] [2022-11-02 20:25:14,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:14,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:25:14,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:14,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:25:14,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:25:14,846 INFO L87 Difference]: Start difference. First operand 9763 states and 14738 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:25:18,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:25:23,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:25:29,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:25:33,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:25:36,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:25:38,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:25:41,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:25:43,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:25:48,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:48,322 INFO L93 Difference]: Finished difference Result 10467 states and 15989 transitions. [2022-11-02 20:25:48,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:48,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 57 [2022-11-02 20:25:48,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:48,394 INFO L225 Difference]: With dead ends: 10467 [2022-11-02 20:25:48,394 INFO L226 Difference]: Without dead ends: 10464 [2022-11-02 20:25:48,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:25:48,403 INFO L413 NwaCegarLoop]: 4241 mSDtfsCounter, 6117 mSDsluCounter, 2388 mSDsCounter, 0 mSdLazyCounter, 3599 mSolverCounterSat, 3661 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6616 SdHoareTripleChecker+Valid, 6629 SdHoareTripleChecker+Invalid, 7268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3661 IncrementalHoareTripleChecker+Valid, 3599 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:48,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6616 Valid, 6629 Invalid, 7268 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3661 Valid, 3599 Invalid, 8 Unknown, 0 Unchecked, 32.6s Time] [2022-11-02 20:25:48,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10464 states. [2022-11-02 20:25:49,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10464 to 9762. [2022-11-02 20:25:49,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9762 states, 6621 states have (on average 1.3955595831445402) internal successors, (9240), 6827 states have internal predecessors, (9240), 2750 states have call successors, (2750), 391 states have call predecessors, (2750), 390 states have return successors, (2746), 2677 states have call predecessors, (2746), 2746 states have call successors, (2746) [2022-11-02 20:25:49,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9762 states to 9762 states and 14736 transitions. [2022-11-02 20:25:49,451 INFO L78 Accepts]: Start accepts. Automaton has 9762 states and 14736 transitions. Word has length 57 [2022-11-02 20:25:49,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:49,452 INFO L495 AbstractCegarLoop]: Abstraction has 9762 states and 14736 transitions. [2022-11-02 20:25:49,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:25:49,452 INFO L276 IsEmpty]: Start isEmpty. Operand 9762 states and 14736 transitions. [2022-11-02 20:25:49,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 20:25:49,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:49,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:49,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:25:49,457 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:49,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:49,457 INFO L85 PathProgramCache]: Analyzing trace with hash -588571090, now seen corresponding path program 1 times [2022-11-02 20:25:49,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:49,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375630121] [2022-11-02 20:25:49,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:49,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:49,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:25:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:49,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:25:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:49,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 20:25:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:49,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:49,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:49,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375630121] [2022-11-02 20:25:49,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375630121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:49,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:49,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:25:49,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585548777] [2022-11-02 20:25:49,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:49,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:25:49,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:49,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:25:49,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:25:49,822 INFO L87 Difference]: Start difference. First operand 9762 states and 14736 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:25:53,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []