./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2849ddc1-9a2e-44fa-a36e-39201b2bd59c/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2849ddc1-9a2e-44fa-a36e-39201b2bd59c/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2849ddc1-9a2e-44fa-a36e-39201b2bd59c/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2849ddc1-9a2e-44fa-a36e-39201b2bd59c/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2849ddc1-9a2e-44fa-a36e-39201b2bd59c/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2849ddc1-9a2e-44fa-a36e-39201b2bd59c/bin/uautomizer-TMbwUNV5ro --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 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d --- 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-8393723 [2022-11-18 20:07:39,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:07:39,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:07:39,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:07:39,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:07:39,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:07:39,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:07:39,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:07:39,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:07:39,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:07:39,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:07:39,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:07:39,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:07:39,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:07:39,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:07:39,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:07:39,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:07:39,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:07:39,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:07:39,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:07:39,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:07:39,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:07:39,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:07:39,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:07:39,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:07:39,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:07:39,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:07:39,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:07:39,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:07:39,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:07:39,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:07:39,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:07:39,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:07:39,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:07:39,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:07:39,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:07:39,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:07:39,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:07:39,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:07:39,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:07:39,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:07:39,454 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2849ddc1-9a2e-44fa-a36e-39201b2bd59c/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 20:07:39,480 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:07:39,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:07:39,481 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:07:39,481 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:07:39,482 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:07:39,483 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:07:39,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:07:39,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:07:39,485 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:07:39,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:07:39,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:07:39,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:07:39,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:07:39,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:07:39,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:07:39,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:07:39,488 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:07:39,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:07:39,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:07:39,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:07:39,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:07:39,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:07:39,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:07:39,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:07:39,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:07:39,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:07:39,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:07:39,492 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:07:39,493 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:07:39,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:07:39,494 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_2849ddc1-9a2e-44fa-a36e-39201b2bd59c/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2849ddc1-9a2e-44fa-a36e-39201b2bd59c/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d [2022-11-18 20:07:39,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:07:39,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:07:39,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:07:39,809 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:07:39,815 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:07:39,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2849ddc1-9a2e-44fa-a36e-39201b2bd59c/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2022-11-18 20:07:39,886 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2849ddc1-9a2e-44fa-a36e-39201b2bd59c/bin/uautomizer-TMbwUNV5ro/data/6d5216184/77c9aab53ece4903b067c47ad8351501/FLAGb7564003e [2022-11-18 20:07:40,817 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:07:40,818 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2849ddc1-9a2e-44fa-a36e-39201b2bd59c/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2022-11-18 20:07:40,856 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2849ddc1-9a2e-44fa-a36e-39201b2bd59c/bin/uautomizer-TMbwUNV5ro/data/6d5216184/77c9aab53ece4903b067c47ad8351501/FLAGb7564003e [2022-11-18 20:07:41,294 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2849ddc1-9a2e-44fa-a36e-39201b2bd59c/bin/uautomizer-TMbwUNV5ro/data/6d5216184/77c9aab53ece4903b067c47ad8351501 [2022-11-18 20:07:41,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:07:41,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:07:41,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:07:41,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:07:41,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:07:41,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:07:41" (1/1) ... [2022-11-18 20:07:41,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b8974df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:41, skipping insertion in model container [2022-11-18 20:07:41,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:07:41" (1/1) ... [2022-11-18 20:07:41,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:07:41,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:07:42,718 WARN L234 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_2849ddc1-9a2e-44fa-a36e-39201b2bd59c/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[119996,120009] [2022-11-18 20:07:43,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:07:43,856 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:07:43,952 WARN L234 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_2849ddc1-9a2e-44fa-a36e-39201b2bd59c/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[119996,120009] [2022-11-18 20:07:44,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:07:44,539 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:07:44,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:44 WrapperNode [2022-11-18 20:07:44,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:07:44,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:07:44,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:07:44,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:07:44,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:44" (1/1) ... [2022-11-18 20:07:44,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:44" (1/1) ... [2022-11-18 20:07:44,857 INFO L138 Inliner]: procedures = 371, calls = 3025, calls flagged for inlining = 198, calls inlined = 180, statements flattened = 6258 [2022-11-18 20:07:44,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:07:44,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:07:44,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:07:44,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:07:44,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:44" (1/1) ... [2022-11-18 20:07:44,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:44" (1/1) ... [2022-11-18 20:07:44,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:44" (1/1) ... [2022-11-18 20:07:44,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:44" (1/1) ... [2022-11-18 20:07:45,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:44" (1/1) ... [2022-11-18 20:07:45,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:44" (1/1) ... [2022-11-18 20:07:45,201 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:44" (1/1) ... [2022-11-18 20:07:45,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:44" (1/1) ... [2022-11-18 20:07:45,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:07:45,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:07:45,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:07:45,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:07:45,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:44" (1/1) ... [2022-11-18 20:07:45,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:07:45,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2849ddc1-9a2e-44fa-a36e-39201b2bd59c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:45,335 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2849ddc1-9a2e-44fa-a36e-39201b2bd59c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:07:45,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2849ddc1-9a2e-44fa-a36e-39201b2bd59c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:07:45,391 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2022-11-18 20:07:45,391 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2022-11-18 20:07:45,391 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2022-11-18 20:07:45,392 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2022-11-18 20:07:45,392 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2022-11-18 20:07:45,392 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2022-11-18 20:07:45,392 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2022-11-18 20:07:45,392 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2022-11-18 20:07:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-18 20:07:45,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-18 20:07:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_14 [2022-11-18 20:07:45,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_14 [2022-11-18 20:07:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2022-11-18 20:07:45,394 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2022-11-18 20:07:45,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-18 20:07:45,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-18 20:07:45,394 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-11-18 20:07:45,394 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-11-18 20:07:45,394 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2022-11-18 20:07:45,395 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2022-11-18 20:07:45,395 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2022-11-18 20:07:45,395 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2022-11-18 20:07:45,395 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_show [2022-11-18 20:07:45,395 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_show [2022-11-18 20:07:45,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-18 20:07:45,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-18 20:07:45,396 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2022-11-18 20:07:45,396 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2022-11-18 20:07:45,396 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-18 20:07:45,397 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-18 20:07:45,397 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-18 20:07:45,397 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-18 20:07:45,397 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2022-11-18 20:07:45,397 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2022-11-18 20:07:45,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-18 20:07:45,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-18 20:07:45,398 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-11-18 20:07:45,398 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-11-18 20:07:45,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-18 20:07:45,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-18 20:07:45,399 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2022-11-18 20:07:45,399 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2022-11-18 20:07:45,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_5 [2022-11-18 20:07:45,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_5 [2022-11-18 20:07:45,400 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2022-11-18 20:07:45,400 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2022-11-18 20:07:45,400 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2022-11-18 20:07:45,400 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2022-11-18 20:07:45,400 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-18 20:07:45,401 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-18 20:07:45,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-18 20:07:45,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-18 20:07:45,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2022-11-18 20:07:45,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2022-11-18 20:07:45,401 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2022-11-18 20:07:45,402 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2022-11-18 20:07:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2022-11-18 20:07:45,404 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2022-11-18 20:07:45,404 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-11-18 20:07:45,405 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-11-18 20:07:45,405 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2022-11-18 20:07:45,405 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2022-11-18 20:07:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-18 20:07:45,406 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-18 20:07:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 20:07:45,406 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 20:07:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2022-11-18 20:07:45,406 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2022-11-18 20:07:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2022-11-18 20:07:45,407 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2022-11-18 20:07:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2022-11-18 20:07:45,408 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2022-11-18 20:07:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2022-11-18 20:07:45,408 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2022-11-18 20:07:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_store [2022-11-18 20:07:45,409 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_store [2022-11-18 20:07:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___2 [2022-11-18 20:07:45,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___2 [2022-11-18 20:07:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2022-11-18 20:07:45,409 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2022-11-18 20:07:45,410 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-18 20:07:45,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-18 20:07:45,410 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-18 20:07:45,410 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-18 20:07:45,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:07:45,410 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-18 20:07:45,411 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-18 20:07:45,411 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2022-11-18 20:07:45,411 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2022-11-18 20:07:45,412 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2022-11-18 20:07:45,412 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2022-11-18 20:07:45,412 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2022-11-18 20:07:45,413 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2022-11-18 20:07:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2022-11-18 20:07:45,413 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2022-11-18 20:07:45,414 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-11-18 20:07:45,414 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-11-18 20:07:45,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:07:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-18 20:07:45,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-18 20:07:45,416 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-18 20:07:45,416 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2022-11-18 20:07:45,416 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2022-11-18 20:07:45,416 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2022-11-18 20:07:45,416 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2022-11-18 20:07:45,417 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-11-18 20:07:45,417 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-11-18 20:07:45,417 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-18 20:07:45,417 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-18 20:07:45,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2022-11-18 20:07:45,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2022-11-18 20:07:45,418 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2022-11-18 20:07:45,418 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2022-11-18 20:07:45,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:07:45,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 20:07:45,419 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2022-11-18 20:07:45,419 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2022-11-18 20:07:45,420 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-18 20:07:45,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-18 20:07:45,423 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-11-18 20:07:45,423 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-11-18 20:07:45,423 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-18 20:07:45,424 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-18 20:07:45,425 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2022-11-18 20:07:45,425 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2022-11-18 20:07:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2022-11-18 20:07:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2022-11-18 20:07:45,428 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-18 20:07:45,433 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-18 20:07:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-18 20:07:45,433 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-18 20:07:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-18 20:07:45,434 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-18 20:07:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2022-11-18 20:07:45,434 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2022-11-18 20:07:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2022-11-18 20:07:45,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2022-11-18 20:07:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2022-11-18 20:07:45,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2022-11-18 20:07:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-18 20:07:45,435 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-18 20:07:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2022-11-18 20:07:45,435 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2022-11-18 20:07:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_bulk_callback [2022-11-18 20:07:45,436 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_bulk_callback [2022-11-18 20:07:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-18 20:07:45,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-18 20:07:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2022-11-18 20:07:45,436 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2022-11-18 20:07:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-18 20:07:45,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-18 20:07:45,437 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-11-18 20:07:45,437 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-11-18 20:07:45,437 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2022-11-18 20:07:45,437 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2022-11-18 20:07:45,437 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2022-11-18 20:07:45,438 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2022-11-18 20:07:45,438 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2022-11-18 20:07:45,438 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2022-11-18 20:07:45,438 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2022-11-18 20:07:45,438 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2022-11-18 20:07:45,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:07:45,439 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2022-11-18 20:07:45,439 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2022-11-18 20:07:45,439 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-18 20:07:45,439 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-18 20:07:45,439 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2022-11-18 20:07:45,439 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2022-11-18 20:07:45,440 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-18 20:07:45,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-18 20:07:45,440 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2022-11-18 20:07:45,440 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2022-11-18 20:07:45,440 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2022-11-18 20:07:45,440 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2022-11-18 20:07:45,440 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-18 20:07:45,441 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-18 20:07:45,441 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-18 20:07:45,441 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-18 20:07:45,441 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-11-18 20:07:45,441 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-11-18 20:07:45,441 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2022-11-18 20:07:45,442 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2022-11-18 20:07:45,442 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-18 20:07:45,442 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-18 20:07:45,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_41 [2022-11-18 20:07:45,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_41 [2022-11-18 20:07:45,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_42 [2022-11-18 20:07:45,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_42 [2022-11-18 20:07:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-11-18 20:07:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-11-18 20:07:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:07:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure serial_set_termios [2022-11-18 20:07:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_set_termios [2022-11-18 20:07:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2022-11-18 20:07:45,444 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2022-11-18 20:07:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-11-18 20:07:45,444 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2022-11-18 20:07:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-18 20:07:45,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-18 20:07:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2022-11-18 20:07:45,445 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2022-11-18 20:07:45,445 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2022-11-18 20:07:45,445 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2022-11-18 20:07:45,445 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_get_by_minor [2022-11-18 20:07:45,445 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_get_by_minor [2022-11-18 20:07:45,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:07:45,446 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2022-11-18 20:07:45,446 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2022-11-18 20:07:45,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:07:45,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-18 20:07:45,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-18 20:07:45,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:07:45,446 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-18 20:07:45,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_18 [2022-11-18 20:07:45,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_18 [2022-11-18 20:07:45,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_4 [2022-11-18 20:07:45,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_4 [2022-11-18 20:07:45,447 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-18 20:07:45,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-18 20:07:45,448 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-18 20:07:45,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-18 20:07:45,448 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2022-11-18 20:07:45,448 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2022-11-18 20:07:45,448 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-18 20:07:45,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-18 20:07:45,448 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2022-11-18 20:07:45,449 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2022-11-18 20:07:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_22 [2022-11-18 20:07:45,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_22 [2022-11-18 20:07:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2022-11-18 20:07:45,449 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2022-11-18 20:07:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2022-11-18 20:07:45,450 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2022-11-18 20:07:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2022-11-18 20:07:45,450 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2022-11-18 20:07:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2022-11-18 20:07:45,450 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2022-11-18 20:07:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-18 20:07:45,451 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-18 20:07:45,451 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2022-11-18 20:07:45,451 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2022-11-18 20:07:45,451 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-18 20:07:45,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-18 20:07:45,451 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2022-11-18 20:07:45,451 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2022-11-18 20:07:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-18 20:07:45,456 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-18 20:07:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-18 20:07:45,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-18 20:07:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:07:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:07:45,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:07:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-11-18 20:07:45,457 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-11-18 20:07:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2022-11-18 20:07:45,458 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2022-11-18 20:07:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-18 20:07:45,460 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-18 20:07:46,414 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:07:46,422 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:07:46,974 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-18 20:07:47,791 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___2FINAL: assume true; [2022-11-18 20:07:56,620 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:07:56,655 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:07:56,655 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:07:56,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:07:56 BoogieIcfgContainer [2022-11-18 20:07:56,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:07:56,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:07:56,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:07:56,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:07:56,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:07:41" (1/3) ... [2022-11-18 20:07:56,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cae3bd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:07:56, skipping insertion in model container [2022-11-18 20:07:56,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:44" (2/3) ... [2022-11-18 20:07:56,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cae3bd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:07:56, skipping insertion in model container [2022-11-18 20:07:56,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:07:56" (3/3) ... [2022-11-18 20:07:56,675 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2022-11-18 20:07:56,701 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:07:56,701 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:07:56,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:07:56,871 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;@8c5b89e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:07:56,871 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:07:56,885 INFO L276 IsEmpty]: Start isEmpty. Operand has 2085 states, 1498 states have (on average 1.3377837116154874) internal successors, (2004), 1539 states have internal predecessors, (2004), 465 states have call successors, (465), 122 states have call predecessors, (465), 120 states have return successors, (451), 440 states have call predecessors, (451), 451 states have call successors, (451) [2022-11-18 20:07:56,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-18 20:07:56,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:07:56,911 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:56,912 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:07:56,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:56,918 INFO L85 PathProgramCache]: Analyzing trace with hash 576527519, now seen corresponding path program 1 times [2022-11-18 20:07:56,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:56,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270373056] [2022-11-18 20:07:56,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:56,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:07:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:07:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:07:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:07:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:07:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:07:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:07:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,385 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-18 20:07:58,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:58,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270373056] [2022-11-18 20:07:58,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270373056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:58,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:58,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:07:58,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200260162] [2022-11-18 20:07:58,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:58,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:07:58,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:58,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:07:58,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:07:58,466 INFO L87 Difference]: Start difference. First operand has 2085 states, 1498 states have (on average 1.3377837116154874) internal successors, (2004), 1539 states have internal predecessors, (2004), 465 states have call successors, (465), 122 states have call predecessors, (465), 120 states have return successors, (451), 440 states have call predecessors, (451), 451 states have call successors, (451) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-18 20:08:03,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:08:12,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:08:12,974 INFO L93 Difference]: Finished difference Result 6627 states and 9753 transitions. [2022-11-18 20:08:12,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:08:12,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 69 [2022-11-18 20:08:12,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:08:13,062 INFO L225 Difference]: With dead ends: 6627 [2022-11-18 20:08:13,064 INFO L226 Difference]: Without dead ends: 4510 [2022-11-18 20:08:13,092 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 [2022-11-18 20:08:13,099 INFO L413 NwaCegarLoop]: 2789 mSDtfsCounter, 4051 mSDsluCounter, 3615 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 1349 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4373 SdHoareTripleChecker+Valid, 6404 SdHoareTripleChecker+Invalid, 3704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1349 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:08:13,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4373 Valid, 6404 Invalid, 3704 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1349 Valid, 2354 Invalid, 1 Unknown, 0 Unchecked, 13.6s Time] [2022-11-18 20:08:13,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4510 states. [2022-11-18 20:08:13,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4510 to 4008. [2022-11-18 20:08:13,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4008 states, 2905 states have (on average 1.3304647160068848) internal successors, (3865), 2948 states have internal predecessors, (3865), 866 states have call successors, (866), 237 states have call predecessors, (866), 236 states have return successors, (859), 837 states have call predecessors, (859), 859 states have call successors, (859) [2022-11-18 20:08:13,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 5590 transitions. [2022-11-18 20:08:13,541 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 5590 transitions. Word has length 69 [2022-11-18 20:08:13,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:08:13,542 INFO L495 AbstractCegarLoop]: Abstraction has 4008 states and 5590 transitions. [2022-11-18 20:08:13,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-18 20:08:13,542 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 5590 transitions. [2022-11-18 20:08:13,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-18 20:08:13,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:08:13,561 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:13,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:08:13,562 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:08:13,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:13,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1768927405, now seen corresponding path program 1 times [2022-11-18 20:08:13,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:13,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667577429] [2022-11-18 20:08:13,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:13,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:14,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:08:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:14,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:08:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:14,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:08:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:14,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:08:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:14,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:08:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:14,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:08:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:14,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:08:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:14,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:08:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:14,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 20:08:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:14,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:08:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:14,184 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-18 20:08:14,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:14,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667577429] [2022-11-18 20:08:14,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667577429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:14,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:14,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:08:14,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563372906] [2022-11-18 20:08:14,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:14,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:08:14,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:14,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:08:14,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:08:14,194 INFO L87 Difference]: Start difference. First operand 4008 states and 5590 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 20:08:18,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:08:21,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:08:26,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:08:29,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:08:29,649 INFO L93 Difference]: Finished difference Result 12618 states and 17802 transitions. [2022-11-18 20:08:29,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:08:29,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2022-11-18 20:08:29,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:08:29,720 INFO L225 Difference]: With dead ends: 12618 [2022-11-18 20:08:29,720 INFO L226 Difference]: Without dead ends: 8631 [2022-11-18 20:08:29,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:08:29,745 INFO L413 NwaCegarLoop]: 2747 mSDtfsCounter, 3843 mSDsluCounter, 3490 mSDsCounter, 0 mSdLazyCounter, 2433 mSolverCounterSat, 1300 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4173 SdHoareTripleChecker+Valid, 6237 SdHoareTripleChecker+Invalid, 3735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1300 IncrementalHoareTripleChecker+Valid, 2433 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:08:29,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4173 Valid, 6237 Invalid, 3735 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1300 Valid, 2433 Invalid, 2 Unknown, 0 Unchecked, 14.8s Time] [2022-11-18 20:08:29,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8631 states. [2022-11-18 20:08:30,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8631 to 7590. [2022-11-18 20:08:30,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7590 states, 5504 states have (on average 1.3248546511627908) internal successors, (7292), 5585 states have internal predecessors, (7292), 1627 states have call successors, (1627), 459 states have call predecessors, (1627), 458 states have return successors, (1620), 1575 states have call predecessors, (1620), 1620 states have call successors, (1620) [2022-11-18 20:08:30,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7590 states to 7590 states and 10539 transitions. [2022-11-18 20:08:30,250 INFO L78 Accepts]: Start accepts. Automaton has 7590 states and 10539 transitions. Word has length 88 [2022-11-18 20:08:30,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:08:30,251 INFO L495 AbstractCegarLoop]: Abstraction has 7590 states and 10539 transitions. [2022-11-18 20:08:30,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 20:08:30,251 INFO L276 IsEmpty]: Start isEmpty. Operand 7590 states and 10539 transitions. [2022-11-18 20:08:30,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-18 20:08:30,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:08:30,270 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:30,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:08:30,271 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:08:30,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:30,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1616646081, now seen corresponding path program 1 times [2022-11-18 20:08:30,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:30,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192287390] [2022-11-18 20:08:30,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:30,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:30,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:08:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:30,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:08:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:30,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:08:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:30,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:08:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:30,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:08:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:30,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:08:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:30,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:08:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:30,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:08:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:30,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 20:08:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:30,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:08:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:30,862 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-18 20:08:30,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:30,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192287390] [2022-11-18 20:08:30,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192287390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:30,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:30,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:08:30,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421542828] [2022-11-18 20:08:30,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:30,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:08:30,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:30,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:08:30,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:08:30,867 INFO L87 Difference]: Start difference. First operand 7590 states and 10539 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 20:08:34,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:08:41,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:08:52,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:08:52,605 INFO L93 Difference]: Finished difference Result 29336 states and 42843 transitions. [2022-11-18 20:08:52,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:08:52,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 93 [2022-11-18 20:08:52,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:08:52,783 INFO L225 Difference]: With dead ends: 29336 [2022-11-18 20:08:52,783 INFO L226 Difference]: Without dead ends: 21767 [2022-11-18 20:08:52,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:08:52,833 INFO L413 NwaCegarLoop]: 2556 mSDtfsCounter, 7310 mSDsluCounter, 4381 mSDsCounter, 0 mSdLazyCounter, 5152 mSolverCounterSat, 3950 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7745 SdHoareTripleChecker+Valid, 6937 SdHoareTripleChecker+Invalid, 9104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3950 IncrementalHoareTripleChecker+Valid, 5152 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:08:52,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7745 Valid, 6937 Invalid, 9104 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3950 Valid, 5152 Invalid, 2 Unknown, 0 Unchecked, 20.5s Time] [2022-11-18 20:08:52,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21767 states. [2022-11-18 20:08:54,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21767 to 19128. [2022-11-18 20:08:54,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19128 states, 13890 states have (on average 1.3133189344852412) internal successors, (18242), 13998 states have internal predecessors, (18242), 4033 states have call successors, (4033), 901 states have call predecessors, (4033), 1204 states have return successors, (5226), 4302 states have call predecessors, (5226), 4026 states have call successors, (5226) [2022-11-18 20:08:54,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19128 states to 19128 states and 27501 transitions. [2022-11-18 20:08:54,363 INFO L78 Accepts]: Start accepts. Automaton has 19128 states and 27501 transitions. Word has length 93 [2022-11-18 20:08:54,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:08:54,366 INFO L495 AbstractCegarLoop]: Abstraction has 19128 states and 27501 transitions. [2022-11-18 20:08:54,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 20:08:54,367 INFO L276 IsEmpty]: Start isEmpty. Operand 19128 states and 27501 transitions. [2022-11-18 20:08:54,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-18 20:08:54,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:08:54,372 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:54,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:08:54,372 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:08:54,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:54,373 INFO L85 PathProgramCache]: Analyzing trace with hash -21120825, now seen corresponding path program 1 times [2022-11-18 20:08:54,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:54,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980279715] [2022-11-18 20:08:54,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:54,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:55,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:08:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:55,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:08:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:55,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:08:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:55,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:08:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:55,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:08:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:55,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:08:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:55,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:08:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:55,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:08:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:55,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:08:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:55,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:08:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:55,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:08:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:55,316 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-18 20:08:55,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:55,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980279715] [2022-11-18 20:08:55,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980279715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:55,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:55,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:08:55,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836089825] [2022-11-18 20:08:55,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:55,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:08:55,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:55,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:08:55,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:08:55,320 INFO L87 Difference]: Start difference. First operand 19128 states and 27501 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:08:58,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:09:11,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:09:11,137 INFO L93 Difference]: Finished difference Result 64481 states and 102714 transitions. [2022-11-18 20:09:11,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:09:11,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2022-11-18 20:09:11,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:09:11,447 INFO L225 Difference]: With dead ends: 64481 [2022-11-18 20:09:11,448 INFO L226 Difference]: Without dead ends: 45374 [2022-11-18 20:09:11,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:09:11,627 INFO L413 NwaCegarLoop]: 2935 mSDtfsCounter, 4620 mSDsluCounter, 5331 mSDsCounter, 0 mSdLazyCounter, 3460 mSolverCounterSat, 1563 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4930 SdHoareTripleChecker+Valid, 8266 SdHoareTripleChecker+Invalid, 5024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1563 IncrementalHoareTripleChecker+Valid, 3460 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:09:11,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4930 Valid, 8266 Invalid, 5024 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1563 Valid, 3460 Invalid, 1 Unknown, 0 Unchecked, 13.4s Time] [2022-11-18 20:09:11,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45374 states. [2022-11-18 20:09:14,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45374 to 41194. [2022-11-18 20:09:14,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41194 states, 29998 states have (on average 1.3083872258150544) internal successors, (39249), 30172 states have internal predecessors, (39249), 8447 states have call successors, (8447), 1801 states have call predecessors, (8447), 2748 states have return successors, (14768), 9384 states have call predecessors, (14768), 8440 states have call successors, (14768) [2022-11-18 20:09:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41194 states to 41194 states and 62464 transitions. [2022-11-18 20:09:15,160 INFO L78 Accepts]: Start accepts. Automaton has 41194 states and 62464 transitions. Word has length 92 [2022-11-18 20:09:15,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:09:15,163 INFO L495 AbstractCegarLoop]: Abstraction has 41194 states and 62464 transitions. [2022-11-18 20:09:15,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:09:15,164 INFO L276 IsEmpty]: Start isEmpty. Operand 41194 states and 62464 transitions. [2022-11-18 20:09:15,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-18 20:09:15,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:09:15,174 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:15,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:09:15,174 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:09:15,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:15,175 INFO L85 PathProgramCache]: Analyzing trace with hash -656167517, now seen corresponding path program 1 times [2022-11-18 20:09:15,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:15,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051261777] [2022-11-18 20:09:15,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:15,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:15,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:09:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:15,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:09:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:15,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:09:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:15,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:09:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:15,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:09:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:15,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:09:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:15,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:09:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:16,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:09:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:16,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:09:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:16,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:09:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:16,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-18 20:09:16,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:16,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051261777] [2022-11-18 20:09:16,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051261777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:09:16,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:09:16,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:09:16,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108988119] [2022-11-18 20:09:16,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:09:16,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:09:16,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:16,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:09:16,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:09:16,094 INFO L87 Difference]: Start difference. First operand 41194 states and 62464 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:09:30,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:09:30,590 INFO L93 Difference]: Finished difference Result 131795 states and 225459 transitions. [2022-11-18 20:09:30,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:09:30,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2022-11-18 20:09:30,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:09:31,558 INFO L225 Difference]: With dead ends: 131795 [2022-11-18 20:09:31,558 INFO L226 Difference]: Without dead ends: 90622 [2022-11-18 20:09:32,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:09:32,089 INFO L413 NwaCegarLoop]: 2919 mSDtfsCounter, 5951 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2491 mSolverCounterSat, 2751 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6266 SdHoareTripleChecker+Valid, 6877 SdHoareTripleChecker+Invalid, 5242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2751 IncrementalHoareTripleChecker+Valid, 2491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:09:32,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6266 Valid, 6877 Invalid, 5242 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2751 Valid, 2491 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-11-18 20:09:32,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90622 states. [2022-11-18 20:09:37,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90622 to 83295. [2022-11-18 20:09:37,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83295 states, 60647 states have (on average 1.3052747868814616) internal successors, (79161), 60953 states have internal predecessors, (79161), 17003 states have call successors, (17003), 3601 states have call predecessors, (17003), 5644 states have return successors, (37764), 19068 states have call predecessors, (37764), 16996 states have call successors, (37764) [2022-11-18 20:09:39,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83295 states to 83295 states and 133928 transitions. [2022-11-18 20:09:39,321 INFO L78 Accepts]: Start accepts. Automaton has 83295 states and 133928 transitions. Word has length 93 [2022-11-18 20:09:39,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:09:39,323 INFO L495 AbstractCegarLoop]: Abstraction has 83295 states and 133928 transitions. [2022-11-18 20:09:39,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:09:39,323 INFO L276 IsEmpty]: Start isEmpty. Operand 83295 states and 133928 transitions. [2022-11-18 20:09:39,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-18 20:09:39,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:09:39,326 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:39,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:09:39,327 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:09:39,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:39,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1132226378, now seen corresponding path program 1 times [2022-11-18 20:09:39,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:39,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058947572] [2022-11-18 20:09:39,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:39,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:39,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:09:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:39,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:09:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:39,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:09:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:39,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:09:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:39,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:09:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:39,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:09:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:39,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:09:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:39,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:09:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:39,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:09:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:39,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:09:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:39,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:39,752 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-18 20:09:39,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:39,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058947572] [2022-11-18 20:09:39,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058947572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:09:39,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:09:39,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:09:39,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101165517] [2022-11-18 20:09:39,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:09:39,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:09:39,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:39,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:09:39,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:09:39,756 INFO L87 Difference]: Start difference. First operand 83295 states and 133928 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:09:52,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:09:52,195 INFO L93 Difference]: Finished difference Result 90620 states and 148828 transitions. [2022-11-18 20:09:52,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:09:52,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 94 [2022-11-18 20:09:52,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:09:52,730 INFO L225 Difference]: With dead ends: 90620 [2022-11-18 20:09:52,731 INFO L226 Difference]: Without dead ends: 90617 [2022-11-18 20:09:52,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:09:52,795 INFO L413 NwaCegarLoop]: 2911 mSDtfsCounter, 5946 mSDsluCounter, 3952 mSDsCounter, 0 mSdLazyCounter, 2477 mSolverCounterSat, 2742 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6262 SdHoareTripleChecker+Valid, 6863 SdHoareTripleChecker+Invalid, 5219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2742 IncrementalHoareTripleChecker+Valid, 2477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:09:52,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6262 Valid, 6863 Invalid, 5219 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2742 Valid, 2477 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-18 20:09:52,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90617 states. [2022-11-18 20:09:57,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90617 to 83296. [2022-11-18 20:09:57,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83296 states, 60648 states have (on average 1.3052697533306952) internal successors, (79162), 60954 states have internal predecessors, (79162), 17003 states have call successors, (17003), 3601 states have call predecessors, (17003), 5644 states have return successors, (37764), 19068 states have call predecessors, (37764), 16996 states have call successors, (37764) [2022-11-18 20:09:58,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83296 states to 83296 states and 133929 transitions. [2022-11-18 20:09:58,343 INFO L78 Accepts]: Start accepts. Automaton has 83296 states and 133929 transitions. Word has length 94 [2022-11-18 20:09:58,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:09:58,344 INFO L495 AbstractCegarLoop]: Abstraction has 83296 states and 133929 transitions. [2022-11-18 20:09:58,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:09:58,345 INFO L276 IsEmpty]: Start isEmpty. Operand 83296 states and 133929 transitions. [2022-11-18 20:09:58,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-18 20:09:58,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:09:58,350 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:58,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:09:58,350 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:09:58,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:58,351 INFO L85 PathProgramCache]: Analyzing trace with hash 737867142, now seen corresponding path program 1 times [2022-11-18 20:09:58,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:58,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413163643] [2022-11-18 20:09:58,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:58,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:58,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:09:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:58,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:09:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:58,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:09:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:58,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:09:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:58,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:09:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:58,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:09:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:58,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:09:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:58,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:09:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:58,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:09:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:59,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:09:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:59,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:59,068 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-18 20:09:59,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:59,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413163643] [2022-11-18 20:09:59,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413163643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:09:59,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:09:59,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:09:59,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216675266] [2022-11-18 20:09:59,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:09:59,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:09:59,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:59,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:09:59,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:09:59,086 INFO L87 Difference]: Start difference. First operand 83296 states and 133929 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:10:15,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:10:15,477 INFO L93 Difference]: Finished difference Result 209395 states and 345748 transitions. [2022-11-18 20:10:15,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:10:15,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 95 [2022-11-18 20:10:15,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:10:16,242 INFO L225 Difference]: With dead ends: 209395 [2022-11-18 20:10:16,242 INFO L226 Difference]: Without dead ends: 126120 [2022-11-18 20:10:17,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:10:17,048 INFO L413 NwaCegarLoop]: 3740 mSDtfsCounter, 4781 mSDsluCounter, 4613 mSDsCounter, 0 mSdLazyCounter, 2730 mSolverCounterSat, 2219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5091 SdHoareTripleChecker+Valid, 8353 SdHoareTripleChecker+Invalid, 4949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2219 IncrementalHoareTripleChecker+Valid, 2730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:10:17,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5091 Valid, 8353 Invalid, 4949 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2219 Valid, 2730 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-18 20:10:17,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126120 states.