./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 267df3d840ee451a69f2c9c23fc4c286b307e31eb8c416518f7dce9b4c82858a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 16:30:45,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 16:30:45,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 16:30:45,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 16:30:45,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 16:30:45,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 16:30:45,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 16:30:45,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 16:30:45,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 16:30:45,511 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 16:30:45,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 16:30:45,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 16:30:45,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 16:30:45,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 16:30:45,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 16:30:45,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 16:30:45,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 16:30:45,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 16:30:45,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 16:30:45,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 16:30:45,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 16:30:45,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 16:30:45,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 16:30:45,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 16:30:45,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 16:30:45,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 16:30:45,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 16:30:45,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 16:30:45,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 16:30:45,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 16:30:45,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 16:30:45,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 16:30:45,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 16:30:45,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 16:30:45,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 16:30:45,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 16:30:45,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 16:30:45,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 16:30:45,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 16:30:45,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 16:30:45,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 16:30:45,534 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 16:30:45,551 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 16:30:45,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 16:30:45,558 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 16:30:45,558 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 16:30:45,559 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 16:30:45,559 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 16:30:45,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 16:30:45,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 16:30:45,560 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 16:30:45,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 16:30:45,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 16:30:45,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 16:30:45,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 16:30:45,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 16:30:45,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 16:30:45,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 16:30:45,562 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 16:30:45,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 16:30:45,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 16:30:45,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 16:30:45,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 16:30:45,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:30:45,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 16:30:45,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 16:30:45,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 16:30:45,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 16:30:45,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 16:30:45,563 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 16:30:45,564 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 16:30:45,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 16:30:45,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 16:30:45,564 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 267df3d840ee451a69f2c9c23fc4c286b307e31eb8c416518f7dce9b4c82858a [2021-12-21 16:30:45,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 16:30:45,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 16:30:45,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 16:30:45,770 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 16:30:45,771 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 16:30:45,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-12-21 16:30:45,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e51c85344/ca1c805e4fc6432395df4ae0ad6464ce/FLAG4327b6ca7 [2021-12-21 16:30:46,436 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 16:30:46,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-12-21 16:30:46,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e51c85344/ca1c805e4fc6432395df4ae0ad6464ce/FLAG4327b6ca7 [2021-12-21 16:30:46,607 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e51c85344/ca1c805e4fc6432395df4ae0ad6464ce [2021-12-21 16:30:46,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 16:30:46,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 16:30:46,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 16:30:46,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 16:30:46,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 16:30:46,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:30:46" (1/1) ... [2021-12-21 16:30:46,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aaa206e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:30:46, skipping insertion in model container [2021-12-21 16:30:46,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:30:46" (1/1) ... [2021-12-21 16:30:46,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 16:30:46,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 16:30:48,431 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[313744,313757] [2021-12-21 16:30:48,478 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:30:48,545 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 16:30:48,854 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[313744,313757] [2021-12-21 16:30:48,860 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:30:48,966 INFO L208 MainTranslator]: Completed translation [2021-12-21 16:30:48,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:30:48 WrapperNode [2021-12-21 16:30:48,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 16:30:48,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 16:30:48,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 16:30:48,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 16:30:48,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:30:48" (1/1) ... [2021-12-21 16:30:49,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:30:48" (1/1) ... [2021-12-21 16:30:49,252 INFO L137 Inliner]: procedures = 388, calls = 3920, calls flagged for inlining = 190, calls inlined = 187, statements flattened = 7932 [2021-12-21 16:30:49,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 16:30:49,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 16:30:49,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 16:30:49,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 16:30:49,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:30:48" (1/1) ... [2021-12-21 16:30:49,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:30:48" (1/1) ... [2021-12-21 16:30:49,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:30:48" (1/1) ... [2021-12-21 16:30:49,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:30:48" (1/1) ... [2021-12-21 16:30:49,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:30:48" (1/1) ... [2021-12-21 16:30:49,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:30:48" (1/1) ... [2021-12-21 16:30:49,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:30:48" (1/1) ... [2021-12-21 16:30:49,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 16:30:49,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 16:30:49,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 16:30:49,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 16:30:49,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:30:48" (1/1) ... [2021-12-21 16:30:49,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:30:49,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:30:49,569 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 16:30:49,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 16:30:49,599 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2021-12-21 16:30:49,600 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2021-12-21 16:30:49,600 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2021-12-21 16:30:49,600 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2021-12-21 16:30:49,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2021-12-21 16:30:49,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2021-12-21 16:30:49,600 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-21 16:30:49,600 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-21 16:30:49,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-21 16:30:49,601 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-21 16:30:49,601 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2021-12-21 16:30:49,659 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2021-12-21 16:30:49,659 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2021-12-21 16:30:49,659 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2021-12-21 16:30:49,659 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2021-12-21 16:30:49,659 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2021-12-21 16:30:49,659 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-12-21 16:30:49,659 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-12-21 16:30:49,660 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2021-12-21 16:30:49,660 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2021-12-21 16:30:49,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 16:30:49,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 16:30:49,660 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2021-12-21 16:30:49,660 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2021-12-21 16:30:49,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_5 [2021-12-21 16:30:49,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_5 [2021-12-21 16:30:49,660 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2021-12-21 16:30:49,660 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2021-12-21 16:30:49,660 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2021-12-21 16:30:49,660 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2021-12-21 16:30:49,660 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-12-21 16:30:49,660 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-12-21 16:30:49,660 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2021-12-21 16:30:49,660 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2021-12-21 16:30:49,660 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister_drivers [2021-12-21 16:30:49,660 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister_drivers [2021-12-21 16:30:49,660 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2021-12-21 16:30:49,661 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2021-12-21 16:30:49,661 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2021-12-21 16:30:49,661 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2021-12-21 16:30:49,661 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_work [2021-12-21 16:30:49,661 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_work [2021-12-21 16:30:49,661 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-21 16:30:49,661 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-21 16:30:49,661 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2021-12-21 16:30:49,661 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2021-12-21 16:30:49,661 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2021-12-21 16:30:49,661 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2021-12-21 16:30:49,661 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2021-12-21 16:30:49,661 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2021-12-21 16:30:49,661 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2021-12-21 16:30:49,661 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2021-12-21 16:30:49,661 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-21 16:30:49,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-21 16:30:49,661 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-21 16:30:49,661 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-21 16:30:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2021-12-21 16:30:49,662 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2021-12-21 16:30:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2021-12-21 16:30:49,662 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2021-12-21 16:30:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-12-21 16:30:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2021-12-21 16:30:49,662 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2021-12-21 16:30:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-21 16:30:49,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-21 16:30:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-21 16:30:49,662 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-21 16:30:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2021-12-21 16:30:49,662 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2021-12-21 16:30:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 16:30:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-21 16:30:49,662 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-21 16:30:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2021-12-21 16:30:49,662 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2021-12-21 16:30:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2021-12-21 16:30:49,663 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2021-12-21 16:30:49,663 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-21 16:30:49,663 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-21 16:30:49,663 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2021-12-21 16:30:49,663 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2021-12-21 16:30:49,663 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2021-12-21 16:30:49,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2021-12-21 16:30:49,663 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-21 16:30:49,663 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-21 16:30:49,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-21 16:30:49,663 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2021-12-21 16:30:49,663 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2021-12-21 16:30:49,663 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-21 16:30:49,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-21 16:30:49,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-21 16:30:49,663 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2021-12-21 16:30:49,663 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2021-12-21 16:30:49,663 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2021-12-21 16:30:49,663 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2021-12-21 16:30:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2021-12-21 16:30:49,664 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2021-12-21 16:30:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 16:30:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-21 16:30:49,664 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-21 16:30:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2021-12-21 16:30:49,664 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2021-12-21 16:30:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-12-21 16:30:49,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-12-21 16:30:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-21 16:30:49,664 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-21 16:30:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2021-12-21 16:30:49,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2021-12-21 16:30:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-21 16:30:49,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-21 16:30:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 16:30:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 16:30:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 16:30:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-21 16:30:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-21 16:30:49,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-21 16:30:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-21 16:30:49,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-21 16:30:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2021-12-21 16:30:49,665 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2021-12-21 16:30:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-21 16:30:49,665 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-21 16:30:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2021-12-21 16:30:49,665 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2021-12-21 16:30:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-21 16:30:49,665 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-21 16:30:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2021-12-21 16:30:49,665 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2021-12-21 16:30:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-21 16:30:49,665 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-21 16:30:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 16:30:49,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 16:30:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2021-12-21 16:30:49,666 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2021-12-21 16:30:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-21 16:30:49,666 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-21 16:30:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2021-12-21 16:30:49,666 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2021-12-21 16:30:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2021-12-21 16:30:49,666 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2021-12-21 16:30:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-12-21 16:30:49,666 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-12-21 16:30:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-21 16:30:49,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-21 16:30:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-21 16:30:49,666 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-21 16:30:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2021-12-21 16:30:49,666 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2021-12-21 16:30:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-21 16:30:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-21 16:30:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-21 16:30:49,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-21 16:30:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_show [2021-12-21 16:30:49,667 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_show [2021-12-21 16:30:49,667 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2021-12-21 16:30:49,667 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2021-12-21 16:30:49,667 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-12-21 16:30:49,667 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-12-21 16:30:49,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-12-21 16:30:49,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-12-21 16:30:49,670 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-21 16:30:49,670 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-21 16:30:49,670 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-21 16:30:49,670 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-21 16:30:49,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-21 16:30:49,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-21 16:30:49,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2021-12-21 16:30:49,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2021-12-21 16:30:49,671 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2021-12-21 16:30:49,671 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2021-12-21 16:30:49,671 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_msr_changed [2021-12-21 16:30:49,671 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_msr_changed [2021-12-21 16:30:49,671 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2021-12-21 16:30:49,672 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2021-12-21 16:30:49,672 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 16:30:49,672 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 16:30:49,672 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_store [2021-12-21 16:30:49,672 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_store [2021-12-21 16:30:49,672 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2021-12-21 16:30:49,672 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2021-12-21 16:30:49,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 16:30:49,672 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-21 16:30:49,673 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-21 16:30:49,673 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2021-12-21 16:30:49,673 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2021-12-21 16:30:49,673 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2021-12-21 16:30:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2021-12-21 16:30:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 16:30:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-21 16:30:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-21 16:30:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2021-12-21 16:30:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2021-12-21 16:30:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 16:30:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-21 16:30:49,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-21 16:30:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2021-12-21 16:30:49,675 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2021-12-21 16:30:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-21 16:30:49,675 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-21 16:30:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2021-12-21 16:30:49,675 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2021-12-21 16:30:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-12-21 16:30:49,676 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-12-21 16:30:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-21 16:30:49,676 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-21 16:30:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-21 16:30:49,676 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-21 16:30:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_softint [2021-12-21 16:30:49,676 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_softint [2021-12-21 16:30:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2021-12-21 16:30:49,677 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2021-12-21 16:30:49,677 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-21 16:30:49,677 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-21 16:30:49,677 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2021-12-21 16:30:49,677 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2021-12-21 16:30:49,677 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2021-12-21 16:30:49,677 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2021-12-21 16:30:49,677 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2021-12-21 16:30:49,678 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2021-12-21 16:30:49,678 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2021-12-21 16:30:49,678 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2021-12-21 16:30:49,678 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-12-21 16:30:49,678 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-12-21 16:30:49,678 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2021-12-21 16:30:49,679 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2021-12-21 16:30:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-21 16:30:49,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-21 16:30:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2021-12-21 16:30:49,680 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2021-12-21 16:30:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2021-12-21 16:30:49,680 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2021-12-21 16:30:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-21 16:30:49,680 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-21 16:30:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2021-12-21 16:30:49,680 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2021-12-21 16:30:49,681 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-21 16:30:49,681 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-21 16:30:49,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 16:30:49,681 INFO L130 BoogieDeclarations]: Found specification of procedure serial_set_termios [2021-12-21 16:30:49,681 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_set_termios [2021-12-21 16:30:49,681 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2021-12-21 16:30:49,681 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2021-12-21 16:30:49,682 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2021-12-21 16:30:49,682 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2021-12-21 16:30:49,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-21 16:30:49,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-21 16:30:49,683 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2021-12-21 16:30:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2021-12-21 16:30:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2021-12-21 16:30:49,685 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2021-12-21 16:30:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_get_by_minor [2021-12-21 16:30:49,685 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_get_by_minor [2021-12-21 16:30:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-21 16:30:49,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-21 16:30:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2021-12-21 16:30:49,686 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2021-12-21 16:30:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_handle_sysrq_char [2021-12-21 16:30:49,690 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_handle_sysrq_char [2021-12-21 16:30:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2021-12-21 16:30:49,690 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2021-12-21 16:30:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-21 16:30:49,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-21 16:30:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2021-12-21 16:30:49,691 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2021-12-21 16:30:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2021-12-21 16:30:49,691 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2021-12-21 16:30:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2021-12-21 16:30:49,691 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2021-12-21 16:30:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-21 16:30:49,691 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-21 16:30:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-21 16:30:49,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-21 16:30:49,692 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2021-12-21 16:30:49,692 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2021-12-21 16:30:49,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 16:30:49,692 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2021-12-21 16:30:49,692 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2021-12-21 16:30:50,403 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 16:30:50,405 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 16:30:50,779 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-21 16:30:58,503 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 16:30:58,550 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 16:30:58,551 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 16:30:58,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:30:58 BoogieIcfgContainer [2021-12-21 16:30:58,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 16:30:58,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 16:30:58,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 16:30:58,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 16:30:58,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:30:46" (1/3) ... [2021-12-21 16:30:58,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c1974b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:30:58, skipping insertion in model container [2021-12-21 16:30:58,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:30:48" (2/3) ... [2021-12-21 16:30:58,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c1974b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:30:58, skipping insertion in model container [2021-12-21 16:30:58,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:30:58" (3/3) ... [2021-12-21 16:30:58,568 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-12-21 16:30:58,572 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 16:30:58,573 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 16:30:58,619 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 16:30:58,633 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 16:30:58,639 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 16:30:58,689 INFO L276 IsEmpty]: Start isEmpty. Operand has 2348 states, 1698 states have (on average 1.3468786808009423) internal successors, (2287), 1734 states have internal predecessors, (2287), 520 states have call successors, (520), 129 states have call predecessors, (520), 128 states have return successors, (509), 496 states have call predecessors, (509), 509 states have call successors, (509) [2021-12-21 16:30:58,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-12-21 16:30:58,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:30:58,720 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:30:58,720 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:30:58,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:30:58,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1536291652, now seen corresponding path program 1 times [2021-12-21 16:30:58,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:30:58,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874597110] [2021-12-21 16:30:58,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:30:58,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:30:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:30:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:30:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:30:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:30:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:30:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:30:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 16:30:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:30:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:30:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:30:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:30:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:30:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 16:30:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:30:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:30:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 16:30:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:30:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:30:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 16:30:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:30:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:30:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 16:30:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:30:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:30:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-21 16:30:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:30:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:30:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-21 16:30:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:30:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:30:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-21 16:30:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:30:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:30:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-21 16:30:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-21 16:30:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-21 16:30:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-21 16:30:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-12-21 16:30:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-21 16:30:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-21 16:30:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-21 16:30:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-12-21 16:30:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-21 16:30:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-21 16:30:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-21 16:30:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-12-21 16:30:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2021-12-21 16:30:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:30:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:30:59,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1100 trivial. 0 not checked. [2021-12-21 16:30:59,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:30:59,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874597110] [2021-12-21 16:30:59,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874597110] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:30:59,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:30:59,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:30:59,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043076955] [2021-12-21 16:30:59,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:30:59,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:30:59,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:30:59,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:30:59,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:30:59,952 INFO L87 Difference]: Start difference. First operand has 2348 states, 1698 states have (on average 1.3468786808009423) internal successors, (2287), 1734 states have internal predecessors, (2287), 520 states have call successors, (520), 129 states have call predecessors, (520), 128 states have return successors, (509), 496 states have call predecessors, (509), 509 states have call successors, (509) Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (29), 6 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-21 16:31:04,518 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:31:10,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:31:10,128 INFO L93 Difference]: Finished difference Result 5373 states and 7946 transitions. [2021-12-21 16:31:10,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:31:10,130 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (29), 6 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 304 [2021-12-21 16:31:10,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:31:10,166 INFO L225 Difference]: With dead ends: 5373 [2021-12-21 16:31:10,166 INFO L226 Difference]: Without dead ends: 3012 [2021-12-21 16:31:10,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:31:10,183 INFO L933 BasicCegarLoop]: 3168 mSDtfsCounter, 2817 mSDsluCounter, 3757 mSDsCounter, 0 mSdLazyCounter, 2068 mSolverCounterSat, 2387 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2914 SdHoareTripleChecker+Valid, 6925 SdHoareTripleChecker+Invalid, 4456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2387 IncrementalHoareTripleChecker+Valid, 2068 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-12-21 16:31:10,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2914 Valid, 6925 Invalid, 4456 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2387 Valid, 2068 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2021-12-21 16:31:10,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2021-12-21 16:31:10,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 2330. [2021-12-21 16:31:10,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2330 states, 1693 states have (on average 1.3396337861783816) internal successors, (2268), 1716 states have internal predecessors, (2268), 509 states have call successors, (509), 128 states have call predecessors, (509), 127 states have return successors, (507), 494 states have call predecessors, (507), 507 states have call successors, (507) [2021-12-21 16:31:10,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 3284 transitions. [2021-12-21 16:31:10,339 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 3284 transitions. Word has length 304 [2021-12-21 16:31:10,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:31:10,339 INFO L470 AbstractCegarLoop]: Abstraction has 2330 states and 3284 transitions. [2021-12-21 16:31:10,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (29), 6 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-21 16:31:10,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 3284 transitions. [2021-12-21 16:31:10,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-12-21 16:31:10,348 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:31:10,348 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:31:10,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 16:31:10,349 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:31:10,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:31:10,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1634991194, now seen corresponding path program 1 times [2021-12-21 16:31:10,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:31:10,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950152015] [2021-12-21 16:31:10,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:31:10,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:31:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:31:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:31:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:31:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:31:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 16:31:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:31:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:31:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:31:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 16:31:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:31:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 16:31:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:31:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 16:31:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:31:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 16:31:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:31:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-21 16:31:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:31:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-21 16:31:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:31:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-21 16:31:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:10,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:31:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:11,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-21 16:31:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:11,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-21 16:31:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:11,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-21 16:31:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:11,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-21 16:31:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:11,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-12-21 16:31:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:11,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-21 16:31:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:11,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-21 16:31:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:11,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-21 16:31:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:11,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-12-21 16:31:11,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:11,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-21 16:31:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:11,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-21 16:31:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:11,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-21 16:31:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:11,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-12-21 16:31:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:11,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2021-12-21 16:31:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:11,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:11,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1100 trivial. 0 not checked. [2021-12-21 16:31:11,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:31:11,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950152015] [2021-12-21 16:31:11,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950152015] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:31:11,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:31:11,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 16:31:11,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433864114] [2021-12-21 16:31:11,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:31:11,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:31:11,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:31:11,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:31:11,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:31:11,187 INFO L87 Difference]: Start difference. First operand 2330 states and 3284 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-21 16:31:13,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:31:15,979 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:31:18,259 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:31:20,788 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:31:30,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:31:30,790 INFO L93 Difference]: Finished difference Result 8252 states and 12087 transitions. [2021-12-21 16:31:30,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 16:31:30,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 304 [2021-12-21 16:31:30,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:31:30,829 INFO L225 Difference]: With dead ends: 8252 [2021-12-21 16:31:30,829 INFO L226 Difference]: Without dead ends: 5959 [2021-12-21 16:31:30,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-21 16:31:30,847 INFO L933 BasicCegarLoop]: 4003 mSDtfsCounter, 8245 mSDsluCounter, 7439 mSDsCounter, 0 mSdLazyCounter, 4291 mSolverCounterSat, 5041 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8616 SdHoareTripleChecker+Valid, 11442 SdHoareTripleChecker+Invalid, 9333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5041 IncrementalHoareTripleChecker+Valid, 4291 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2021-12-21 16:31:30,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8616 Valid, 11442 Invalid, 9333 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5041 Valid, 4291 Invalid, 1 Unknown, 0 Unchecked, 19.0s Time] [2021-12-21 16:31:30,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5959 states. [2021-12-21 16:31:30,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5959 to 4610. [2021-12-21 16:31:31,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4610 states, 3362 states have (on average 1.3417608566329566) internal successors, (4511), 3407 states have internal predecessors, (4511), 990 states have call successors, (990), 255 states have call predecessors, (990), 257 states have return successors, (1011), 965 states have call predecessors, (1011), 988 states have call successors, (1011) [2021-12-21 16:31:31,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 6512 transitions. [2021-12-21 16:31:31,017 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 6512 transitions. Word has length 304 [2021-12-21 16:31:31,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:31:31,019 INFO L470 AbstractCegarLoop]: Abstraction has 4610 states and 6512 transitions. [2021-12-21 16:31:31,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-21 16:31:31,020 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 6512 transitions. [2021-12-21 16:31:31,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-12-21 16:31:31,031 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:31:31,032 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:31:31,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 16:31:31,032 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:31:31,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:31:31,033 INFO L85 PathProgramCache]: Analyzing trace with hash -466476478, now seen corresponding path program 1 times [2021-12-21 16:31:31,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:31:31,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899283081] [2021-12-21 16:31:31,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:31:31,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:31:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:31:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:31:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:31:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:31:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 16:31:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:31:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:31:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:31:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 16:31:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:31:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 16:31:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:31:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 16:31:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:31:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 16:31:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:31:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-21 16:31:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:31:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-21 16:31:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:31:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-21 16:31:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:31:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-21 16:31:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-21 16:31:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-21 16:31:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-21 16:31:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-12-21 16:31:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-21 16:31:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-21 16:31:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-21 16:31:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-12-21 16:31:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-21 16:31:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-21 16:31:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-21 16:31:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-12-21 16:31:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-12-21 16:31:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-12-21 16:31:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-12-21 16:31:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:31:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:31:31,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1100 trivial. 0 not checked. [2021-12-21 16:31:31,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:31:31,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899283081] [2021-12-21 16:31:31,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899283081] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:31:31,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:31:31,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 16:31:31,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028612392] [2021-12-21 16:31:31,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:31:31,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 16:31:31,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:31:31,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 16:31:31,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:31:31,855 INFO L87 Difference]: Start difference. First operand 4610 states and 6512 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (34), 7 states have call predecessors, (34), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-21 16:31:38,337 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []