java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:19:24,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:19:24,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:19:24,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:19:24,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:19:24,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:19:24,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:19:24,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:19:24,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:19:24,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:19:24,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:19:24,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:19:24,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:19:24,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:19:24,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:19:24,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:19:24,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:19:24,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:19:24,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:19:24,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:19:24,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:19:24,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:19:24,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:19:24,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:19:24,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 22:19:24,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 22:19:24,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 22:19:24,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 22:19:24,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 22:19:24,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 22:19:24,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 22:19:24,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 22:19:24,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 22:19:24,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 22:19:24,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 22:19:24,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 22:19:24,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 22:19:24,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 22:19:24,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:19:24,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:19:24,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:19:24,503 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 22:19:24,517 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:19:24,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:19:24,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:19:24,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:19:24,519 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:19:24,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:19:24,519 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:19:24,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:19:24,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:19:24,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:19:24,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:19:24,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:19:24,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:19:24,520 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:19:24,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:19:24,521 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:19:24,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:19:24,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:19:24,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:19:24,522 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:19:24,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:19:24,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:19:24,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:19:24,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:19:24,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:19:24,523 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:19:24,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:19:24,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:19:24,523 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:19:24,806 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:19:24,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:19:24,826 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:19:24,828 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:19:24,829 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:19:24,830 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i [2019-10-14 22:19:24,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/074151c7e/b0dd30cfecdd4882bc3789e355c62b1f/FLAG72affef02 [2019-10-14 22:19:25,745 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:19:25,747 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i [2019-10-14 22:19:25,785 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/074151c7e/b0dd30cfecdd4882bc3789e355c62b1f/FLAG72affef02 [2019-10-14 22:19:26,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/074151c7e/b0dd30cfecdd4882bc3789e355c62b1f [2019-10-14 22:19:26,269 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:19:26,271 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:19:26,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:19:26,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:19:26,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:19:26,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:19:26" (1/1) ... [2019-10-14 22:19:26,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f918a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:19:26, skipping insertion in model container [2019-10-14 22:19:26,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:19:26" (1/1) ... [2019-10-14 22:19:26,288 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:19:26,411 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:19:27,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:19:27,795 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:19:28,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:19:28,318 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:19:28,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:19:28 WrapperNode [2019-10-14 22:19:28,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:19:28,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:19:28,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:19:28,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:19:28,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:19:28" (1/1) ... [2019-10-14 22:19:28,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:19:28" (1/1) ... [2019-10-14 22:19:28,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:19:28" (1/1) ... [2019-10-14 22:19:28,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:19:28" (1/1) ... [2019-10-14 22:19:28,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:19:28" (1/1) ... [2019-10-14 22:19:28,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:19:28" (1/1) ... [2019-10-14 22:19:28,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:19:28" (1/1) ... [2019-10-14 22:19:28,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:19:28,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:19:28,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:19:28,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:19:28,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:19:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:19:28,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:19:28,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:19:28,731 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2019-10-14 22:19:28,731 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2019-10-14 22:19:28,732 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2019-10-14 22:19:28,733 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2019-10-14 22:19:28,733 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-14 22:19:28,733 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2019-10-14 22:19:28,734 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2019-10-14 22:19:28,734 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-14 22:19:28,734 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-14 22:19:28,735 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2019-10-14 22:19:28,736 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2019-10-14 22:19:28,736 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2019-10-14 22:19:28,738 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2019-10-14 22:19:28,739 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2019-10-14 22:19:28,742 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2019-10-14 22:19:28,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2019-10-14 22:19:28,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_int_must_check_helper [2019-10-14 22:19:28,743 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_buffer_init [2019-10-14 22:19:28,744 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_buffer_free [2019-10-14 22:19:28,744 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_buffer_write [2019-10-14 22:19:28,744 INFO L138 BoogieDeclarations]: Found implementation of procedure free_imon_context [2019-10-14 22:19:28,744 INFO L138 BoogieDeclarations]: Found implementation of procedure deregister_from_lirc [2019-10-14 22:19:28,744 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2019-10-14 22:19:28,744 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2019-10-14 22:19:28,745 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2019-10-14 22:19:28,745 INFO L138 BoogieDeclarations]: Found implementation of procedure vfd_write [2019-10-14 22:19:28,745 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_tx_callback [2019-10-14 22:19:28,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_open [2019-10-14 22:19:28,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_close [2019-10-14 22:19:28,745 INFO L138 BoogieDeclarations]: Found implementation of procedure submit_data [2019-10-14 22:19:28,746 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_incoming_packet [2019-10-14 22:19:28,746 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_rx_callback [2019-10-14 22:19:28,746 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_probe [2019-10-14 22:19:28,746 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2019-10-14 22:19:28,746 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_suspend [2019-10-14 22:19:28,746 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_resume [2019-10-14 22:19:28,746 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_init [2019-10-14 22:19:28,747 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_exit [2019-10-14 22:19:28,747 INFO L138 BoogieDeclarations]: Found implementation of procedure init_module [2019-10-14 22:19:28,747 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup_module [2019-10-14 22:19:28,748 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:19:28,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2019-10-14 22:19:28,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2019-10-14 22:19:28,748 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2019-10-14 22:19:28,748 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2019-10-14 22:19:28,748 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2019-10-14 22:19:28,749 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2019-10-14 22:19:28,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-14 22:19:28,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2019-10-14 22:19:28,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_alloc [2019-10-14 22:19:28,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_free [2019-10-14 22:19:28,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_in [2019-10-14 22:19:28,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_in_r [2019-10-14 22:19:28,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-14 22:19:28,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2019-10-14 22:19:28,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-14 22:19:28,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2019-10-14 22:19:28,751 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2019-10-14 22:19:28,751 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2019-10-14 22:19:28,751 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2019-10-14 22:19:28,751 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2019-10-14 22:19:28,752 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_all [2019-10-14 22:19:28,752 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2019-10-14 22:19:28,752 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2019-10-14 22:19:28,752 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2019-10-14 22:19:28,752 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2019-10-14 22:19:28,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2019-10-14 22:19:28,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-14 22:19:28,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2019-10-14 22:19:28,753 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_register_driver [2019-10-14 22:19:28,753 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_unregister_driver [2019-10-14 22:19:28,754 INFO L138 BoogieDeclarations]: Found implementation of procedure memdup_user [2019-10-14 22:19:28,755 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2019-10-14 22:19:28,755 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-14 22:19:28,755 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-14 22:19:28,755 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-14 22:19:28,755 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2019-10-14 22:19:28,755 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_find_interface [2019-10-14 22:19:28,756 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2019-10-14 22:19:28,756 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2019-10-14 22:19:28,757 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_match_id [2019-10-14 22:19:28,757 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2019-10-14 22:19:28,757 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-14 22:19:28,757 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2019-10-14 22:19:28,757 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_interruptible [2019-10-14 22:19:28,758 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_fmt [2019-10-14 22:19:28,758 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-14 22:19:28,758 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-14 22:19:28,759 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-14 22:19:28,760 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2019-10-14 22:19:28,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:19:28,760 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-14 22:19:28,760 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_fmt [2019-10-14 22:19:28,760 INFO L130 BoogieDeclarations]: Found specification of procedure memdup_user [2019-10-14 22:19:28,760 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-14 22:19:28,760 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2019-10-14 22:19:28,761 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2019-10-14 22:19:28,761 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2019-10-14 22:19:28,761 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2019-10-14 22:19:28,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 22:19:28,761 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2019-10-14 22:19:28,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 22:19:28,761 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-14 22:19:28,762 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2019-10-14 22:19:28,762 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2019-10-14 22:19:28,762 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-14 22:19:28,762 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2019-10-14 22:19:28,762 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2019-10-14 22:19:28,762 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2019-10-14 22:19:28,762 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2019-10-14 22:19:28,763 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2019-10-14 22:19:28,763 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-14 22:19:28,763 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2019-10-14 22:19:28,763 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_interruptible [2019-10-14 22:19:28,764 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2019-10-14 22:19:28,764 INFO L130 BoogieDeclarations]: Found specification of procedure complete_all [2019-10-14 22:19:28,764 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-14 22:19:28,764 INFO L130 BoogieDeclarations]: Found specification of procedure init_module [2019-10-14 22:19:28,765 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup_module [2019-10-14 22:19:28,765 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-14 22:19:28,765 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-14 22:19:28,765 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-14 22:19:28,766 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2019-10-14 22:19:28,767 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2019-10-14 22:19:28,767 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2019-10-14 22:19:28,767 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2019-10-14 22:19:28,767 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2019-10-14 22:19:28,767 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2019-10-14 22:19:28,767 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2019-10-14 22:19:28,768 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2019-10-14 22:19:28,768 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2019-10-14 22:19:28,768 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2019-10-14 22:19:28,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 22:19:28,769 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2019-10-14 22:19:28,769 INFO L130 BoogieDeclarations]: Found specification of procedure usb_match_id [2019-10-14 22:19:28,769 INFO L130 BoogieDeclarations]: Found specification of procedure usb_find_interface [2019-10-14 22:19:28,769 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-14 22:19:28,770 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2019-10-14 22:19:28,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 22:19:28,775 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-14 22:19:28,775 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2019-10-14 22:19:28,776 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2019-10-14 22:19:28,783 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2019-10-14 22:19:28,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 22:19:28,784 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2019-10-14 22:19:28,784 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2019-10-14 22:19:28,784 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2019-10-14 22:19:28,784 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2019-10-14 22:19:28,784 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2019-10-14 22:19:28,785 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2019-10-14 22:19:28,785 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2019-10-14 22:19:28,785 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_int_must_check_helper [2019-10-14 22:19:28,786 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_alloc [2019-10-14 22:19:28,786 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_free [2019-10-14 22:19:28,786 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_in [2019-10-14 22:19:28,787 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_in_r [2019-10-14 22:19:28,787 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_buffer_init [2019-10-14 22:19:28,787 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_buffer_free [2019-10-14 22:19:28,787 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_buffer_write [2019-10-14 22:19:28,787 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_register_driver [2019-10-14 22:19:28,787 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_unregister_driver [2019-10-14 22:19:28,787 INFO L130 BoogieDeclarations]: Found specification of procedure imon_probe [2019-10-14 22:19:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2019-10-14 22:19:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure usb_rx_callback [2019-10-14 22:19:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure usb_tx_callback [2019-10-14 22:19:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure imon_resume [2019-10-14 22:19:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure imon_suspend [2019-10-14 22:19:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2019-10-14 22:19:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2019-10-14 22:19:28,789 INFO L130 BoogieDeclarations]: Found specification of procedure vfd_write [2019-10-14 22:19:28,789 INFO L130 BoogieDeclarations]: Found specification of procedure ir_open [2019-10-14 22:19:28,789 INFO L130 BoogieDeclarations]: Found specification of procedure ir_close [2019-10-14 22:19:28,789 INFO L130 BoogieDeclarations]: Found specification of procedure imon_init [2019-10-14 22:19:28,789 INFO L130 BoogieDeclarations]: Found specification of procedure imon_exit [2019-10-14 22:19:28,789 INFO L130 BoogieDeclarations]: Found specification of procedure free_imon_context [2019-10-14 22:19:28,789 INFO L130 BoogieDeclarations]: Found specification of procedure deregister_from_lirc [2019-10-14 22:19:28,790 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2019-10-14 22:19:28,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-14 22:19:28,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 22:19:28,790 INFO L130 BoogieDeclarations]: Found specification of procedure submit_data [2019-10-14 22:19:28,790 INFO L130 BoogieDeclarations]: Found specification of procedure imon_incoming_packet [2019-10-14 22:19:28,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2019-10-14 22:19:28,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-14 22:19:28,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2019-10-14 22:19:28,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-14 22:19:28,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:19:28,791 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:19:28,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2019-10-14 22:19:28,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2019-10-14 22:19:28,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2019-10-14 22:19:28,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-14 22:19:28,792 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-14 22:19:28,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-14 22:19:28,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-14 22:19:28,792 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 22:19:28,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:19:28,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 22:19:28,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 22:19:28,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:19:28,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-14 22:19:28,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-14 22:19:28,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-14 22:19:28,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-14 22:19:30,708 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2019-10-14 22:19:37,601 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 22:19:37,625 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2019-10-14 22:19:37,625 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2019-10-14 22:19:37,775 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 22:19:37,817 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume !false; [2019-10-14 22:19:37,817 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume false; [2019-10-14 22:19:38,124 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:19:38,124 INFO L284 CfgBuilder]: Removed 40 assume(true) statements. [2019-10-14 22:19:38,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:19:38 BoogieIcfgContainer [2019-10-14 22:19:38,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:19:38,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:19:38,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:19:38,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:19:38,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:19:26" (1/3) ... [2019-10-14 22:19:38,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bbf2f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:19:38, skipping insertion in model container [2019-10-14 22:19:38,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:19:28" (2/3) ... [2019-10-14 22:19:38,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bbf2f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:19:38, skipping insertion in model container [2019-10-14 22:19:38,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:19:38" (3/3) ... [2019-10-14 22:19:38,136 INFO L109 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i [2019-10-14 22:19:38,146 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:19:38,159 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:19:38,170 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:19:38,208 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:19:38,208 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:19:38,208 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:19:38,208 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:19:38,209 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:19:38,209 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:19:38,209 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:19:38,209 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:19:38,252 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states. [2019-10-14 22:19:38,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-14 22:19:38,262 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:19:38,263 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:19:38,266 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:19:38,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:19:38,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1136421439, now seen corresponding path program 1 times [2019-10-14 22:19:38,281 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:19:38,281 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640677065] [2019-10-14 22:19:38,282 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:19:38,282 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:19:38,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:19:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:44,952 WARN L191 SmtUtils]: Spent 5.70 s on a formula simplification that was a NOOP. DAG size: 1057 [2019-10-14 22:19:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:19:45,253 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640677065] [2019-10-14 22:19:45,254 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:19:45,254 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 22:19:45,254 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857406911] [2019-10-14 22:19:45,260 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 22:19:45,261 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:19:45,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 22:19:45,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 22:19:45,278 INFO L87 Difference]: Start difference. First operand 690 states. Second operand 4 states. [2019-10-14 22:19:53,338 WARN L191 SmtUtils]: Spent 5.47 s on a formula simplification that was a NOOP. DAG size: 1059