./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.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_6f99bce2-45b5-40b8-9d9e-bdec9749f2ee/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f99bce2-45b5-40b8-9d9e-bdec9749f2ee/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_6f99bce2-45b5-40b8-9d9e-bdec9749f2ee/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f99bce2-45b5-40b8-9d9e-bdec9749f2ee/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f99bce2-45b5-40b8-9d9e-bdec9749f2ee/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_6f99bce2-45b5-40b8-9d9e-bdec9749f2ee/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 e3555fedd9f92961bad45780711b37c7eb42c00277e0bac6769cfc03eaec14a8 --- 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 20:19:13,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:19:13,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:19:13,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:19:13,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:19:13,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:19:13,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:19:13,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:19:13,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:19:13,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:19:13,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:19:13,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:19:13,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:19:13,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:19:13,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:19:13,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:19:13,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:19:13,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:19:13,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:19:13,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:19:13,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:19:13,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:19:13,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:19:13,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:19:13,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:19:13,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:19:13,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:19:13,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:19:13,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:19:13,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:19:13,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:19:13,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:19:13,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:19:13,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:19:13,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:19:13,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:19:13,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:19:13,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:19:13,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:19:13,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:19:13,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:19:13,447 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f99bce2-45b5-40b8-9d9e-bdec9749f2ee/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:19:13,478 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:19:13,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:19:13,483 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:19:13,483 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:19:13,484 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:19:13,485 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:19:13,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:19:13,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:19:13,486 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:19:13,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:19:13,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:19:13,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:19:13,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:19:13,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:19:13,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:19:13,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:19:13,489 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:19:13,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:19:13,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:19:13,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:19:13,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:19:13,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:19:13,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:19:13,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:19:13,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:19:13,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:19:13,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:19:13,493 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:19:13,493 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:19:13,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:19:13,494 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_6f99bce2-45b5-40b8-9d9e-bdec9749f2ee/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f99bce2-45b5-40b8-9d9e-bdec9749f2ee/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3555fedd9f92961bad45780711b37c7eb42c00277e0bac6769cfc03eaec14a8 [2022-11-02 20:19:13,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:19:13,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:19:13,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:19:13,796 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:19:13,797 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:19:13,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f99bce2-45b5-40b8-9d9e-bdec9749f2ee/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2022-11-02 20:19:13,872 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f99bce2-45b5-40b8-9d9e-bdec9749f2ee/bin/uautomizer-Dbtcem3rbc/data/46a78ea29/9e3a245e425e44cf993c3775adc58745/FLAG9308e7cff [2022-11-02 20:19:14,696 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:19:14,697 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f99bce2-45b5-40b8-9d9e-bdec9749f2ee/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2022-11-02 20:19:14,735 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f99bce2-45b5-40b8-9d9e-bdec9749f2ee/bin/uautomizer-Dbtcem3rbc/data/46a78ea29/9e3a245e425e44cf993c3775adc58745/FLAG9308e7cff [2022-11-02 20:19:15,198 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f99bce2-45b5-40b8-9d9e-bdec9749f2ee/bin/uautomizer-Dbtcem3rbc/data/46a78ea29/9e3a245e425e44cf993c3775adc58745 [2022-11-02 20:19:15,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:19:15,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:19:15,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:19:15,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:19:15,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:19:15,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:19:15" (1/1) ... [2022-11-02 20:19:15,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64abae40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:15, skipping insertion in model container [2022-11-02 20:19:15,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:19:15" (1/1) ... [2022-11-02 20:19:15,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:19:15,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:19:16,199 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_6f99bce2-45b5-40b8-9d9e-bdec9749f2ee/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2022-11-02 20:19:16,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:19:16,939 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:19:17,014 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_6f99bce2-45b5-40b8-9d9e-bdec9749f2ee/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2022-11-02 20:19:17,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:19:17,263 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:19:17,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:17 WrapperNode [2022-11-02 20:19:17,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:19:17,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:19:17,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:19:17,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:19:17,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:17" (1/1) ... [2022-11-02 20:19:17,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:17" (1/1) ... [2022-11-02 20:19:17,519 INFO L138 Inliner]: procedures = 203, calls = 1279, calls flagged for inlining = 87, calls inlined = 87, statements flattened = 3493 [2022-11-02 20:19:17,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:19:17,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:19:17,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:19:17,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:19:17,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:17" (1/1) ... [2022-11-02 20:19:17,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:17" (1/1) ... [2022-11-02 20:19:17,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:17" (1/1) ... [2022-11-02 20:19:17,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:17" (1/1) ... [2022-11-02 20:19:17,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:17" (1/1) ... [2022-11-02 20:19:17,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:17" (1/1) ... [2022-11-02 20:19:17,814 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:17" (1/1) ... [2022-11-02 20:19:17,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:17" (1/1) ... [2022-11-02 20:19:17,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:19:17,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:19:17,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:19:17,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:19:17,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:17" (1/1) ... [2022-11-02 20:19:17,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:19:17,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f99bce2-45b5-40b8-9d9e-bdec9749f2ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:19:17,916 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f99bce2-45b5-40b8-9d9e-bdec9749f2ee/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:19:17,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f99bce2-45b5-40b8-9d9e-bdec9749f2ee/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:19:17,966 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2022-11-02 20:19:17,967 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2022-11-02 20:19:17,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2022-11-02 20:19:17,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2022-11-02 20:19:17,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-02 20:19:17,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-02 20:19:17,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-02 20:19:17,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-02 20:19:17,968 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2022-11-02 20:19:17,969 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2022-11-02 20:19:17,969 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2022-11-02 20:19:17,969 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2022-11-02 20:19:17,969 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2022-11-02 20:19:17,969 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2022-11-02 20:19:17,970 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-02 20:19:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-02 20:19:17,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-02 20:19:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-02 20:19:17,970 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2022-11-02 20:19:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2022-11-02 20:19:17,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2022-11-02 20:19:17,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2022-11-02 20:19:17,971 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-11-02 20:19:17,971 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-11-02 20:19:17,971 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2022-11-02 20:19:17,972 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2022-11-02 20:19:17,972 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-02 20:19:17,972 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-02 20:19:17,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-02 20:19:17,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-02 20:19:17,972 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2022-11-02 20:19:17,973 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2022-11-02 20:19:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 20:19:17,973 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 20:19:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-02 20:19:17,974 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-02 20:19:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2022-11-02 20:19:17,974 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2022-11-02 20:19:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2022-11-02 20:19:17,975 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2022-11-02 20:19:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:19:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-02 20:19:17,975 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-02 20:19:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:19:17,976 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2022-11-02 20:19:17,976 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2022-11-02 20:19:17,976 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2022-11-02 20:19:17,977 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2022-11-02 20:19:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-02 20:19:17,977 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-02 20:19:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-02 20:19:17,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-02 20:19:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-11-02 20:19:17,978 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-11-02 20:19:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-02 20:19:17,978 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-02 20:19:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:19:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:19:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2022-11-02 20:19:17,981 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2022-11-02 20:19:17,981 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-02 20:19:17,981 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-02 20:19:17,981 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-02 20:19:17,981 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-02 20:19:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2022-11-02 20:19:17,982 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2022-11-02 20:19:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-02 20:19:17,982 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-02 20:19:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-02 20:19:17,982 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-02 20:19:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2022-11-02 20:19:17,983 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2022-11-02 20:19:17,984 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-02 20:19:17,984 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-02 20:19:17,984 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-02 20:19:17,984 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-02 20:19:17,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-02 20:19:17,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-02 20:19:17,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-02 20:19:17,985 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-02 20:19:17,985 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-02 20:19:17,986 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-02 20:19:17,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-02 20:19:17,986 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-02 20:19:17,986 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-02 20:19:17,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-02 20:19:17,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:19:17,987 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2022-11-02 20:19:17,987 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2022-11-02 20:19:17,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-02 20:19:17,988 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-02 20:19:17,988 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2022-11-02 20:19:17,989 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2022-11-02 20:19:17,989 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2022-11-02 20:19:17,989 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2022-11-02 20:19:17,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:19:17,990 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2022-11-02 20:19:17,990 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2022-11-02 20:19:17,990 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2022-11-02 20:19:17,991 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2022-11-02 20:19:17,991 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2022-11-02 20:19:17,992 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2022-11-02 20:19:17,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-02 20:19:17,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-02 20:19:17,992 INFO L130 BoogieDeclarations]: Found specification of procedure printer_write [2022-11-02 20:19:17,993 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_write [2022-11-02 20:19:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:19:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2022-11-02 20:19:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2022-11-02 20:19:17,993 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2022-11-02 20:19:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2022-11-02 20:19:17,994 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2022-11-02 20:19:17,994 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2022-11-02 20:19:17,994 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-02 20:19:17,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-02 20:19:17,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:19:17,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:19:17,995 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-02 20:19:17,996 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2022-11-02 20:19:17,999 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2022-11-02 20:19:17,999 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2022-11-02 20:19:18,000 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2022-11-02 20:19:18,000 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2022-11-02 20:19:18,001 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2022-11-02 20:19:18,002 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-02 20:19:18,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-02 20:19:18,003 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-02 20:19:18,003 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-02 20:19:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2022-11-02 20:19:18,010 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2022-11-02 20:19:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-11-02 20:19:18,010 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-11-02 20:19:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-02 20:19:18,011 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-02 20:19:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2022-11-02 20:19:18,011 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2022-11-02 20:19:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2022-11-02 20:19:18,011 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2022-11-02 20:19:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-02 20:19:18,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-02 20:19:18,012 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2022-11-02 20:19:18,012 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2022-11-02 20:19:18,012 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-02 20:19:18,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-02 20:19:18,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2022-11-02 20:19:18,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2022-11-02 20:19:18,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:19:18,013 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-02 20:19:18,013 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-02 20:19:18,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:19:18,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:19:18,014 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-02 20:19:18,014 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-02 20:19:18,788 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:19:18,791 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:19:19,078 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-02 20:19:38,289 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:19:38,303 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:19:38,304 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:19:38,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:19:38 BoogieIcfgContainer [2022-11-02 20:19:38,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:19:38,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:19:38,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:19:38,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:19:38,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:19:15" (1/3) ... [2022-11-02 20:19:38,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424bde69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:19:38, skipping insertion in model container [2022-11-02 20:19:38,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:17" (2/3) ... [2022-11-02 20:19:38,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424bde69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:19:38, skipping insertion in model container [2022-11-02 20:19:38,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:19:38" (3/3) ... [2022-11-02 20:19:38,317 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2022-11-02 20:19:38,338 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:19:38,339 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:19:38,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:19:38,451 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;@6c1ff261, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:19:38,452 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:19:38,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 1275 states, 884 states have (on average 1.3834841628959276) internal successors, (1223), 927 states have internal predecessors, (1223), 323 states have call successors, (323), 67 states have call predecessors, (323), 66 states have return successors, (319), 316 states have call predecessors, (319), 319 states have call successors, (319) [2022-11-02 20:19:38,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-02 20:19:38,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:38,476 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:19:38,477 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:19:38,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:38,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1492979739, now seen corresponding path program 1 times [2022-11-02 20:19:38,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:19:38,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623725051] [2022-11-02 20:19:38,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:38,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:19:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:39,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:19:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:39,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:19:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:39,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:19:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:39,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 20:19:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:39,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 20:19:39,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:39,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 20:19:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:39,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-02 20:19:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:39,645 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:19:39,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:19:39,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623725051] [2022-11-02 20:19:39,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623725051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:39,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:39,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:19:39,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212999271] [2022-11-02 20:19:39,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:39,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:19:39,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:19:39,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:19:39,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:19:39,710 INFO L87 Difference]: Start difference. First operand has 1275 states, 884 states have (on average 1.3834841628959276) internal successors, (1223), 927 states have internal predecessors, (1223), 323 states have call successors, (323), 67 states have call predecessors, (323), 66 states have return successors, (319), 316 states have call predecessors, (319), 319 states have call successors, (319) Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-02 20:19:41,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:19:50,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:50,711 INFO L93 Difference]: Finished difference Result 4347 states and 6622 transitions. [2022-11-02 20:19:50,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:19:50,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 56 [2022-11-02 20:19:50,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:50,758 INFO L225 Difference]: With dead ends: 4347 [2022-11-02 20:19:50,758 INFO L226 Difference]: Without dead ends: 3058 [2022-11-02 20:19:50,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:19:50,777 INFO L413 NwaCegarLoop]: 1899 mSDtfsCounter, 3882 mSDsluCounter, 2094 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 1999 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4200 SdHoareTripleChecker+Valid, 3993 SdHoareTripleChecker+Invalid, 3824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1999 IncrementalHoareTripleChecker+Valid, 1824 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:50,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4200 Valid, 3993 Invalid, 3824 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1999 Valid, 1824 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2022-11-02 20:19:50,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2022-11-02 20:19:51,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 2334. [2022-11-02 20:19:51,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 1608 states have (on average 1.3600746268656716) internal successors, (2187), 1669 states have internal predecessors, (2187), 602 states have call successors, (602), 125 states have call predecessors, (602), 123 states have return successors, (590), 581 states have call predecessors, (590), 590 states have call successors, (590) [2022-11-02 20:19:51,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3379 transitions. [2022-11-02 20:19:51,063 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3379 transitions. Word has length 56 [2022-11-02 20:19:51,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:51,064 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3379 transitions. [2022-11-02 20:19:51,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-02 20:19:51,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3379 transitions. [2022-11-02 20:19:51,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-02 20:19:51,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:51,079 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:19:51,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:19:51,080 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:19:51,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:51,081 INFO L85 PathProgramCache]: Analyzing trace with hash -963250297, now seen corresponding path program 1 times [2022-11-02 20:19:51,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:19:51,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036182071] [2022-11-02 20:19:51,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:51,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:19:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:51,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:19:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:51,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:19:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:51,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:19:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:51,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 20:19:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:51,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 20:19:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:51,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 20:19:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:51,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-02 20:19:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:19:51,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:19:51,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036182071] [2022-11-02 20:19:51,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036182071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:51,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:51,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:19:51,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100868509] [2022-11-02 20:19:51,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:51,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:19:51,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:19:51,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:19:51,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:19:51,776 INFO L87 Difference]: Start difference. First operand 2334 states and 3379 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-02 20:19:53,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:20:04,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:20:05,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:05,560 INFO L93 Difference]: Finished difference Result 8380 states and 12482 transitions. [2022-11-02 20:20:05,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:20:05,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 57 [2022-11-02 20:20:05,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:05,614 INFO L225 Difference]: With dead ends: 8380 [2022-11-02 20:20:05,614 INFO L226 Difference]: Without dead ends: 6061 [2022-11-02 20:20:05,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:20:05,629 INFO L413 NwaCegarLoop]: 1960 mSDtfsCounter, 3190 mSDsluCounter, 2698 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 1144 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3504 SdHoareTripleChecker+Valid, 4658 SdHoareTripleChecker+Invalid, 3523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1144 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:05,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3504 Valid, 4658 Invalid, 3523 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1144 Valid, 2378 Invalid, 1 Unknown, 0 Unchecked, 13.2s Time] [2022-11-02 20:20:05,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6061 states. [2022-11-02 20:20:05,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6061 to 4613. [2022-11-02 20:20:05,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4613 states, 3187 states have (on average 1.3614684656416693) internal successors, (4339), 3300 states have internal predecessors, (4339), 1182 states have call successors, (1182), 247 states have call predecessors, (1182), 243 states have return successors, (1164), 1149 states have call predecessors, (1164), 1164 states have call successors, (1164) [2022-11-02 20:20:05,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4613 states to 4613 states and 6685 transitions. [2022-11-02 20:20:05,906 INFO L78 Accepts]: Start accepts. Automaton has 4613 states and 6685 transitions. Word has length 57 [2022-11-02 20:20:05,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:05,907 INFO L495 AbstractCegarLoop]: Abstraction has 4613 states and 6685 transitions. [2022-11-02 20:20:05,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-02 20:20:05,908 INFO L276 IsEmpty]: Start isEmpty. Operand 4613 states and 6685 transitions. [2022-11-02 20:20:05,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-02 20:20:05,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:05,912 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:20:05,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:20:05,912 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:05,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:05,912 INFO L85 PathProgramCache]: Analyzing trace with hash 538243510, now seen corresponding path program 1 times [2022-11-02 20:20:05,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:05,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097711969] [2022-11-02 20:20:05,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:05,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:06,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:20:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:06,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:20:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:06,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:20:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:06,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 20:20:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:06,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 20:20:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:06,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 20:20:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:06,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:20:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:06,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:20:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:20:06,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:06,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097711969] [2022-11-02 20:20:06,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097711969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:06,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:06,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:20:06,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553059453] [2022-11-02 20:20:06,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:06,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:20:06,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:06,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:20:06,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:20:06,431 INFO L87 Difference]: Start difference. First operand 4613 states and 6685 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 20:20:08,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:20:10,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:20:17,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:17,919 INFO L93 Difference]: Finished difference Result 14993 states and 22029 transitions. [2022-11-02 20:20:17,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:20:17,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 59 [2022-11-02 20:20:17,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:17,997 INFO L225 Difference]: With dead ends: 14993 [2022-11-02 20:20:17,997 INFO L226 Difference]: Without dead ends: 10395 [2022-11-02 20:20:18,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 20:20:18,033 INFO L413 NwaCegarLoop]: 2049 mSDtfsCounter, 2217 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 841 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2489 SdHoareTripleChecker+Valid, 3943 SdHoareTripleChecker+Invalid, 2411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 841 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:18,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2489 Valid, 3943 Invalid, 2411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [841 Valid, 1568 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2022-11-02 20:20:18,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10395 states. [2022-11-02 20:20:18,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10395 to 8963. [2022-11-02 20:20:18,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8963 states, 6186 states have (on average 1.3632395732298739) internal successors, (8433), 6394 states have internal predecessors, (8433), 2294 states have call successors, (2294), 487 states have call predecessors, (2294), 482 states have return successors, (2276), 2249 states have call predecessors, (2276), 2276 states have call successors, (2276) [2022-11-02 20:20:18,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8963 states to 8963 states and 13003 transitions. [2022-11-02 20:20:18,631 INFO L78 Accepts]: Start accepts. Automaton has 8963 states and 13003 transitions. Word has length 59 [2022-11-02 20:20:18,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:18,632 INFO L495 AbstractCegarLoop]: Abstraction has 8963 states and 13003 transitions. [2022-11-02 20:20:18,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 20:20:18,633 INFO L276 IsEmpty]: Start isEmpty. Operand 8963 states and 13003 transitions. [2022-11-02 20:20:18,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-02 20:20:18,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:18,636 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:20:18,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:20:18,637 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:18,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:18,637 INFO L85 PathProgramCache]: Analyzing trace with hash 661729035, now seen corresponding path program 1 times [2022-11-02 20:20:18,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:18,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798014768] [2022-11-02 20:20:18,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:18,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:19,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:20:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:19,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:20:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:19,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:20:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:19,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 20:20:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:19,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 20:20:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:19,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 20:20:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:19,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-02 20:20:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:19,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-02 20:20:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:19,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:20:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:20:19,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:19,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798014768] [2022-11-02 20:20:19,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798014768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:19,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:19,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:20:19,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173610716] [2022-11-02 20:20:19,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:19,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:20:19,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:19,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:20:19,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:19,213 INFO L87 Difference]: Start difference. First operand 8963 states and 13003 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-02 20:20:21,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:20:23,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:20:33,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:33,909 INFO L93 Difference]: Finished difference Result 32602 states and 48606 transitions. [2022-11-02 20:20:33,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:20:33,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2022-11-02 20:20:33,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:34,067 INFO L225 Difference]: With dead ends: 32602 [2022-11-02 20:20:34,067 INFO L226 Difference]: Without dead ends: 23651 [2022-11-02 20:20:34,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:20:34,113 INFO L413 NwaCegarLoop]: 1913 mSDtfsCounter, 3197 mSDsluCounter, 2639 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 1157 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3516 SdHoareTripleChecker+Valid, 4552 SdHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1157 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:34,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3516 Valid, 4552 Invalid, 3554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1157 Valid, 2395 Invalid, 2 Unknown, 0 Unchecked, 13.6s Time] [2022-11-02 20:20:34,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23651 states. [2022-11-02 20:20:35,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23651 to 17850. [2022-11-02 20:20:35,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17850 states, 12333 states have (on average 1.3637395605286629) internal successors, (16819), 12737 states have internal predecessors, (16819), 4558 states have call successors, (4558), 966 states have call predecessors, (4558), 958 states have return successors, (4538), 4482 states have call predecessors, (4538), 4538 states have call successors, (4538) [2022-11-02 20:20:35,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17850 states to 17850 states and 25915 transitions. [2022-11-02 20:20:35,503 INFO L78 Accepts]: Start accepts. Automaton has 17850 states and 25915 transitions. Word has length 75 [2022-11-02 20:20:35,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:35,506 INFO L495 AbstractCegarLoop]: Abstraction has 17850 states and 25915 transitions. [2022-11-02 20:20:35,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-02 20:20:35,507 INFO L276 IsEmpty]: Start isEmpty. Operand 17850 states and 25915 transitions. [2022-11-02 20:20:35,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-02 20:20:35,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:35,513 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:20:35,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:20:35,514 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:35,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:35,518 INFO L85 PathProgramCache]: Analyzing trace with hash -178671597, now seen corresponding path program 1 times [2022-11-02 20:20:35,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:35,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103949779] [2022-11-02 20:20:35,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:35,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:37,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:20:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:37,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:20:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:37,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:20:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:37,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 20:20:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:37,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 20:20:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:37,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 20:20:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:37,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-02 20:20:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:38,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-02 20:20:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:38,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:20:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:38,689 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:20:38,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:38,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103949779] [2022-11-02 20:20:38,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103949779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:38,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:38,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-02 20:20:38,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654519207] [2022-11-02 20:20:38,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:38,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:20:38,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:38,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:20:38,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:20:38,692 INFO L87 Difference]: Start difference. First operand 17850 states and 25915 transitions. Second operand has 15 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-02 20:20:40,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:21:19,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:19,590 INFO L93 Difference]: Finished difference Result 62102 states and 93157 transitions. [2022-11-02 20:21:19,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-02 20:21:19,591 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 77 [2022-11-02 20:21:19,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:19,896 INFO L225 Difference]: With dead ends: 62102 [2022-11-02 20:21:19,897 INFO L226 Difference]: Without dead ends: 44267 [2022-11-02 20:21:19,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2022-11-02 20:21:19,988 INFO L413 NwaCegarLoop]: 2082 mSDtfsCounter, 4827 mSDsluCounter, 15662 mSDsCounter, 0 mSdLazyCounter, 13224 mSolverCounterSat, 2427 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5216 SdHoareTripleChecker+Valid, 17744 SdHoareTripleChecker+Invalid, 15652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2427 IncrementalHoareTripleChecker+Valid, 13224 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:19,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5216 Valid, 17744 Invalid, 15652 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2427 Valid, 13224 Invalid, 1 Unknown, 0 Unchecked, 37.3s Time] [2022-11-02 20:21:20,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44267 states. [2022-11-02 20:21:22,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44267 to 31054. [2022-11-02 20:21:22,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31054 states, 21443 states have (on average 1.3643613300377746) internal successors, (29256), 22154 states have internal predecessors, (29256), 7932 states have call successors, (7932), 1674 states have call predecessors, (7932), 1678 states have return successors, (7954), 7813 states have call predecessors, (7954), 7912 states have call successors, (7954) [2022-11-02 20:21:22,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31054 states to 31054 states and 45142 transitions. [2022-11-02 20:21:22,986 INFO L78 Accepts]: Start accepts. Automaton has 31054 states and 45142 transitions. Word has length 77 [2022-11-02 20:21:22,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:22,987 INFO L495 AbstractCegarLoop]: Abstraction has 31054 states and 45142 transitions. [2022-11-02 20:21:22,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-02 20:21:22,987 INFO L276 IsEmpty]: Start isEmpty. Operand 31054 states and 45142 transitions. [2022-11-02 20:21:22,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:21:22,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:22,991 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:21:22,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:21:22,992 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:22,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:22,992 INFO L85 PathProgramCache]: Analyzing trace with hash -719494381, now seen corresponding path program 1 times [2022-11-02 20:21:22,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:21:22,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522024268] [2022-11-02 20:21:22,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:22,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:23,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:21:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:23,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:21:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:23,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:21:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:23,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 20:21:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:23,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 20:21:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:23,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 20:21:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:23,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-02 20:21:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:23,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-02 20:21:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:23,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:21:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:23,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-02 20:21:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:23,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-02 20:21:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:23,574 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:21:23,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:21:23,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522024268] [2022-11-02 20:21:23,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522024268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:23,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:23,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:21:23,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738004041] [2022-11-02 20:21:23,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:23,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:21:23,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:21:23,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:21:23,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:21:23,578 INFO L87 Difference]: Start difference. First operand 31054 states and 45142 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-02 20:21:25,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:21:27,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:21:38,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:38,470 INFO L93 Difference]: Finished difference Result 72152 states and 107103 transitions. [2022-11-02 20:21:38,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:21:38,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2022-11-02 20:21:38,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:38,737 INFO L225 Difference]: With dead ends: 72152 [2022-11-02 20:21:38,738 INFO L226 Difference]: Without dead ends: 41113 [2022-11-02 20:21:38,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:21:38,863 INFO L413 NwaCegarLoop]: 3166 mSDtfsCounter, 2804 mSDsluCounter, 3010 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 1309 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3115 SdHoareTripleChecker+Valid, 6176 SdHoareTripleChecker+Invalid, 3400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1309 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:38,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3115 Valid, 6176 Invalid, 3400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1309 Valid, 2089 Invalid, 2 Unknown, 0 Unchecked, 12.5s Time] [2022-11-02 20:21:38,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41113 states. [2022-11-02 20:21:41,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41113 to 31035. [2022-11-02 20:21:41,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31035 states, 21424 states have (on average 1.363937640029873) internal successors, (29221), 22137 states have internal predecessors, (29221), 7932 states have call successors, (7932), 1674 states have call predecessors, (7932), 1678 states have return successors, (7954), 7811 states have call predecessors, (7954), 7912 states have call successors, (7954) [2022-11-02 20:21:41,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31035 states to 31035 states and 45107 transitions. [2022-11-02 20:21:41,292 INFO L78 Accepts]: Start accepts. Automaton has 31035 states and 45107 transitions. Word has length 92 [2022-11-02 20:21:41,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:41,293 INFO L495 AbstractCegarLoop]: Abstraction has 31035 states and 45107 transitions. [2022-11-02 20:21:41,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-02 20:21:41,294 INFO L276 IsEmpty]: Start isEmpty. Operand 31035 states and 45107 transitions. [2022-11-02 20:21:41,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:21:41,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:41,298 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:21:41,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:21:41,299 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:41,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:41,300 INFO L85 PathProgramCache]: Analyzing trace with hash -351940990, now seen corresponding path program 1 times [2022-11-02 20:21:41,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:21:41,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527391247] [2022-11-02 20:21:41,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:41,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:45,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:21:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:45,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:21:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:45,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:21:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:45,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 20:21:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:45,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 20:21:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:45,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 20:21:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:45,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-02 20:21:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:45,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:21:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:45,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:21:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:45,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:21:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:45,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:21:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:45,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-02 20:21:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:46,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:21:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-02 20:21:46,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:21:46,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527391247] [2022-11-02 20:21:46,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527391247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:46,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:46,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-02 20:21:46,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769093935] [2022-11-02 20:21:46,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:46,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:21:46,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:21:46,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:21:46,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:21:46,264 INFO L87 Difference]: Start difference. First operand 31035 states and 45107 transitions. Second operand has 17 states, 15 states have (on average 3.533333333333333) internal successors, (53), 12 states have internal predecessors, (53), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-02 20:21:48,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:22:35,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:22:35,623 INFO L93 Difference]: Finished difference Result 92705 states and 138624 transitions. [2022-11-02 20:22:35,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 20:22:35,624 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.533333333333333) internal successors, (53), 12 states have internal predecessors, (53), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 98 [2022-11-02 20:22:35,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:22:35,931 INFO L225 Difference]: With dead ends: 92705 [2022-11-02 20:22:35,932 INFO L226 Difference]: Without dead ends: 61685 [2022-11-02 20:22:36,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=193, Invalid=1367, Unknown=0, NotChecked=0, Total=1560 [2022-11-02 20:22:36,053 INFO L413 NwaCegarLoop]: 2136 mSDtfsCounter, 5040 mSDsluCounter, 19121 mSDsCounter, 0 mSdLazyCounter, 15397 mSolverCounterSat, 2520 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5417 SdHoareTripleChecker+Valid, 21257 SdHoareTripleChecker+Invalid, 17918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2520 IncrementalHoareTripleChecker+Valid, 15397 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:22:36,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5417 Valid, 21257 Invalid, 17918 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2520 Valid, 15397 Invalid, 1 Unknown, 0 Unchecked, 43.3s Time] [2022-11-02 20:22:36,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61685 states. [2022-11-02 20:22:39,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61685 to 36590. [2022-11-02 20:22:39,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36590 states, 25259 states have (on average 1.3638307138049803) internal successors, (34449), 26101 states have internal predecessors, (34449), 9350 states have call successors, (9350), 1976 states have call predecessors, (9350), 1980 states have return successors, (9378), 9205 states have call predecessors, (9378), 9330 states have call successors, (9378) [2022-11-02 20:22:39,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36590 states to 36590 states and 53177 transitions. [2022-11-02 20:22:39,344 INFO L78 Accepts]: Start accepts. Automaton has 36590 states and 53177 transitions. Word has length 98 [2022-11-02 20:22:39,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:22:39,345 INFO L495 AbstractCegarLoop]: Abstraction has 36590 states and 53177 transitions. [2022-11-02 20:22:39,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.533333333333333) internal successors, (53), 12 states have internal predecessors, (53), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-02 20:22:39,346 INFO L276 IsEmpty]: Start isEmpty. Operand 36590 states and 53177 transitions. [2022-11-02 20:22:39,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-02 20:22:39,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:22:39,352 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:22:39,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:22:39,352 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:22:39,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:22:39,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1252793173, now seen corresponding path program 1 times [2022-11-02 20:22:39,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:22:39,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787324250] [2022-11-02 20:22:39,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:22:39,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:22:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:22:43,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:22:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:22:43,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:22:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:22:43,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:22:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:22:43,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 20:22:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:22:43,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 20:22:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:22:43,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 20:22:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:22:43,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-02 20:22:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat