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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:01:46,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:01:46,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:01:46,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:01:46,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:01:46,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:01:46,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:01:46,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:01:46,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:01:46,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:01:46,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:01:46,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:01:46,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:01:46,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:01:46,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:01:46,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:01:46,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:01:46,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:01:46,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:01:46,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:01:46,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:01:46,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:01:46,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:01:46,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:01:46,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:01:46,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:01:46,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:01:46,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:01:46,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:01:46,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:01:46,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:01:46,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:01:46,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:01:46,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:01:46,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:01:46,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:01:46,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:01:46,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:01:46,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:01:46,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:01:46,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:01:46,392 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 [2019-10-13 21:01:46,421 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:01:46,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:01:46,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:01:46,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:01:46,423 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:01:46,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:01:46,424 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:01:46,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:01:46,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:01:46,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:01:46,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:01:46,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:01:46,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:01:46,425 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:01:46,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:01:46,425 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:01:46,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:01:46,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:01:46,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:01:46,426 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:01:46,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:01:46,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:01:46,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:01:46,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:01:46,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:01:46,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:01:46,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:01:46,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:01:46,428 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:01:46,715 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:01:46,738 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:01:46,742 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:01:46,744 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:01:46,744 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:01:46,745 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i [2019-10-13 21:01:46,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/620a7dd47/f394a6a1349642e6aa52e4a73f25afd7/FLAGd19e549c6 [2019-10-13 21:01:47,630 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:01:47,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i [2019-10-13 21:01:47,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/620a7dd47/f394a6a1349642e6aa52e4a73f25afd7/FLAGd19e549c6 [2019-10-13 21:01:47,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/620a7dd47/f394a6a1349642e6aa52e4a73f25afd7 [2019-10-13 21:01:47,729 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:01:47,730 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:01:47,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:01:47,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:01:47,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:01:47,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:01:47" (1/1) ... [2019-10-13 21:01:47,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aef2232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:47, skipping insertion in model container [2019-10-13 21:01:47,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:01:47" (1/1) ... [2019-10-13 21:01:47,751 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:01:47,900 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:01:49,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:01:49,502 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:01:49,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:01:50,123 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:01:50,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:50 WrapperNode [2019-10-13 21:01:50,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:01:50,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:01:50,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:01:50,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:01:50,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:50" (1/1) ... [2019-10-13 21:01:50,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:50" (1/1) ... [2019-10-13 21:01:50,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:50" (1/1) ... [2019-10-13 21:01:50,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:50" (1/1) ... [2019-10-13 21:01:50,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:50" (1/1) ... [2019-10-13 21:01:50,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:50" (1/1) ... [2019-10-13 21:01:50,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:50" (1/1) ... [2019-10-13 21:01:50,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:01:50,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:01:50,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:01:50,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:01:50,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:50" (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 [2019-10-13 21:01:50,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:01:50,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:01:50,634 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2019-10-13 21:01:50,635 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2019-10-13 21:01:50,635 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2019-10-13 21:01:50,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 21:01:50,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-13 21:01:50,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-13 21:01:50,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-13 21:01:50,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-13 21:01:50,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-13 21:01:50,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-13 21:01:50,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-13 21:01:50,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-13 21:01:50,641 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2019-10-13 21:01:50,641 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2019-10-13 21:01:50,645 INFO L138 BoogieDeclarations]: Found implementation of procedure test_ti_thread_flag [2019-10-13 21:01:50,645 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2019-10-13 21:01:50,645 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-13 21:01:50,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_5 [2019-10-13 21:01:50,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_8 [2019-10-13 21:01:50,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_9 [2019-10-13 21:01:50,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_11 [2019-10-13 21:01:50,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_12 [2019-10-13 21:01:50,648 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2019-10-13 21:01:50,649 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2019-10-13 21:01:50,649 INFO L138 BoogieDeclarations]: Found implementation of procedure test_tsk_thread_flag [2019-10-13 21:01:50,649 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2019-10-13 21:01:50,649 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2019-10-13 21:01:50,649 INFO L138 BoogieDeclarations]: Found implementation of procedure flag_buf_ptr [2019-10-13 21:01:50,649 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_get_baud_rate [2019-10-13 21:01:50,650 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_char [2019-10-13 21:01:50,650 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2019-10-13 21:01:50,650 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2019-10-13 21:01:50,650 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2019-10-13 21:01:50,650 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2019-10-13 21:01:50,650 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2019-10-13 21:01:50,650 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_data [2019-10-13 21:01:50,651 INFO L138 BoogieDeclarations]: Found implementation of procedure cond_wait_interruptible_timeout_irqrestore [2019-10-13 21:01:50,651 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_wakeup_write_lock [2019-10-13 21:01:50,651 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_oob_command [2019-10-13 21:01:50,651 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_inb_command [2019-10-13 21:01:50,651 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_set_modem_signals [2019-10-13 21:01:50,651 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_transmit_idle [2019-10-13 21:01:50,652 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_rx_throttle [2019-10-13 21:01:50,652 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_rx_unthrottle [2019-10-13 21:01:50,652 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_set_termios [2019-10-13 21:01:50,652 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_break_ctl [2019-10-13 21:01:50,652 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_tiocmget [2019-10-13 21:01:50,652 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_tiocmset [2019-10-13 21:01:50,653 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write [2019-10-13 21:01:50,654 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_bulk_callback [2019-10-13 21:01:50,654 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_room [2019-10-13 21:01:50,654 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_chars_in_buffer [2019-10-13 21:01:50,654 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_dtr_rts [2019-10-13 21:01:50,654 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_open [2019-10-13 21:01:50,654 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_close [2019-10-13 21:01:50,655 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_startup_device [2019-10-13 21:01:50,655 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_init [2019-10-13 21:01:50,656 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_startup [2019-10-13 21:01:50,656 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_disconnect [2019-10-13 21:01:50,656 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_release [2019-10-13 21:01:50,657 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_probe [2019-10-13 21:01:50,657 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_remove [2019-10-13 21:01:50,658 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_read_bulk_callback [2019-10-13 21:01:50,658 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_read_inb_callback [2019-10-13 21:01:50,658 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_read_oob_callback [2019-10-13 21:01:50,658 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_module_init [2019-10-13 21:01:50,658 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_module_exit [2019-10-13 21:01:50,658 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2019-10-13 21:01:50,659 INFO L138 BoogieDeclarations]: Found implementation of procedure invoke_work_1 [2019-10-13 21:01:50,659 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2019-10-13 21:01:50,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_usb_serial_driver_2 [2019-10-13 21:01:50,660 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_1 [2019-10-13 21:01:50,660 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2019-10-13 21:01:50,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_usb_serial_driver_3 [2019-10-13 21:01:50,660 INFO L138 BoogieDeclarations]: Found implementation of procedure work_init_1 [2019-10-13 21:01:50,661 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:01:50,661 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2019-10-13 21:01:50,662 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2019-10-13 21:01:50,662 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2019-10-13 21:01:50,663 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2019-10-13 21:01:50,663 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2019-10-13 21:01:50,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_queue_work_on_15 [2019-10-13 21:01:50,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_queue_delayed_work_on_16 [2019-10-13 21:01:50,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_queue_work_on_17 [2019-10-13 21:01:50,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_18 [2019-10-13 21:01:50,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_queue_delayed_work_on_19 [2019-10-13 21:01:50,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kmem_cache_alloc_25 [2019-10-13 21:01:50,666 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-13 21:01:50,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_28 [2019-10-13 21:01:50,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_29 [2019-10-13 21:01:50,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_30 [2019-10-13 21:01:50,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_31 [2019-10-13 21:01:50,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_32 [2019-10-13 21:01:50,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_33 [2019-10-13 21:01:50,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_34 [2019-10-13 21:01:50,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_35 [2019-10-13 21:01:50,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 21:01:50,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-13 21:01:50,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-13 21:01:50,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-13 21:01:50,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-13 21:01:50,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2019-10-13 21:01:50,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2019-10-13 21:01:50,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2019-10-13 21:01:50,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2019-10-13 21:01:50,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2019-10-13 21:01:50,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2019-10-13 21:01:50,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2019-10-13 21:01:50,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2019-10-13 21:01:50,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2019-10-13 21:01:50,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-13 21:01:50,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2019-10-13 21:01:50,669 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2019-10-13 21:01:50,670 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irq [2019-10-13 21:01:50,670 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2019-10-13 21:01:50,671 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irq [2019-10-13 21:01:50,671 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2019-10-13 21:01:50,671 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2019-10-13 21:01:50,672 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2019-10-13 21:01:50,673 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2019-10-13 21:01:50,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 21:01:50,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 21:01:50,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_2 [2019-10-13 21:01:50,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_3 [2019-10-13 21:01:50,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2019-10-13 21:01:50,674 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2019-10-13 21:01:50,674 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2019-10-13 21:01:50,674 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-13 21:01:50,675 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2019-10-13 21:01:50,675 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 21:01:50,675 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2019-10-13 21:01:50,676 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2019-10-13 21:01:50,676 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2019-10-13 21:01:50,676 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_encode_baud_rate [2019-10-13 21:01:50,677 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_flip_buffer_push [2019-10-13 21:01:50,680 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string_fixed_flag [2019-10-13 21:01:50,680 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string_flags [2019-10-13 21:01:50,680 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2019-10-13 21:01:50,681 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2019-10-13 21:01:50,681 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_wakeup [2019-10-13 21:01:50,681 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_termios_baud_rate [2019-10-13 21:01:50,682 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2019-10-13 21:01:50,688 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister_drivers [2019-10-13 21:01:50,688 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register_drivers [2019-10-13 21:01:50,688 INFO L138 BoogieDeclarations]: Found implementation of procedure autoremove_wake_function [2019-10-13 21:01:50,688 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 21:01:50,688 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 21:01:50,688 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-13 21:01:50,689 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-13 21:01:50,689 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-13 21:01:50,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:01:50,689 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 21:01:50,689 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2019-10-13 21:01:50,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-13 21:01:50,689 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2019-10-13 21:01:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:01:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2019-10-13 21:01:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 21:01:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2019-10-13 21:01:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2019-10-13 21:01:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2019-10-13 21:01:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:01:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 21:01:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-13 21:01:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:01:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 21:01:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 21:01:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 21:01:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 21:01:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:01:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-13 21:01:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-13 21:01:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-13 21:01:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-13 21:01:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-13 21:01:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-13 21:01:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-13 21:01:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-13 21:01:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-13 21:01:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2019-10-13 21:01:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:01:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2019-10-13 21:01:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2019-10-13 21:01:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-13 21:01:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure test_ti_thread_flag [2019-10-13 21:01:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2019-10-13 21:01:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2019-10-13 21:01:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-13 21:01:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2019-10-13 21:01:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irq [2019-10-13 21:01:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2019-10-13 21:01:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irq [2019-10-13 21:01:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2019-10-13 21:01:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-13 21:01:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_5 [2019-10-13 21:01:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2019-10-13 21:01:50,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_8 [2019-10-13 21:01:50,696 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2019-10-13 21:01:50,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_9 [2019-10-13 21:01:50,696 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2019-10-13 21:01:50,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_11 [2019-10-13 21:01:50,696 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2019-10-13 21:01:50,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_12 [2019-10-13 21:01:50,696 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2019-10-13 21:01:50,697 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2019-10-13 21:01:50,697 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2019-10-13 21:01:50,697 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2019-10-13 21:01:50,697 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2019-10-13 21:01:50,697 INFO L130 BoogieDeclarations]: Found specification of procedure autoremove_wake_function [2019-10-13 21:01:50,697 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2019-10-13 21:01:50,697 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-13 21:01:50,697 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2019-10-13 21:01:50,698 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2019-10-13 21:01:50,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_queue_work_on_15 [2019-10-13 21:01:50,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_queue_work_on_17 [2019-10-13 21:01:50,698 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2019-10-13 21:01:50,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_queue_delayed_work_on_16 [2019-10-13 21:01:50,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_queue_delayed_work_on_19 [2019-10-13 21:01:50,698 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2019-10-13 21:01:50,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_18 [2019-10-13 21:01:50,698 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2019-10-13 21:01:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2019-10-13 21:01:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2019-10-13 21:01:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure test_tsk_thread_flag [2019-10-13 21:01:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:01:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2019-10-13 21:01:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 21:01:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kmem_cache_alloc_25 [2019-10-13 21:01:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-13 21:01:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2019-10-13 21:01:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2019-10-13 21:01:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure invoke_work_1 [2019-10-13 21:01:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2019-10-13 21:01:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_usb_serial_driver_2 [2019-10-13 21:01:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_1 [2019-10-13 21:01:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2019-10-13 21:01:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_usb_serial_driver_3 [2019-10-13 21:01:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure work_init_1 [2019-10-13 21:01:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2019-10-13 21:01:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure flag_buf_ptr [2019-10-13 21:01:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2019-10-13 21:01:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure tty_termios_baud_rate [2019-10-13 21:01:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure tty_encode_baud_rate [2019-10-13 21:01:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure tty_get_baud_rate [2019-10-13 21:01:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2019-10-13 21:01:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_wakeup [2019-10-13 21:01:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string_flags [2019-10-13 21:01:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string_fixed_flag [2019-10-13 21:01:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure tty_flip_buffer_push [2019-10-13 21:01:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_char [2019-10-13 21:01:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:01:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:01:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:01:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2019-10-13 21:01:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2019-10-13 21:01:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2019-10-13 21:01:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_28 [2019-10-13 21:01:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_29 [2019-10-13 21:01:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_30 [2019-10-13 21:01:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_31 [2019-10-13 21:01:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_32 [2019-10-13 21:01:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_33 [2019-10-13 21:01:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_34 [2019-10-13 21:01:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_35 [2019-10-13 21:01:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2019-10-13 21:01:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2019-10-13 21:01:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2019-10-13 21:01:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2019-10-13 21:01:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_data [2019-10-13 21:01:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register_drivers [2019-10-13 21:01:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister_drivers [2019-10-13 21:01:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure digi_wakeup_write_lock [2019-10-13 21:01:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_oob_command [2019-10-13 21:01:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_inb_command [2019-10-13 21:01:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure digi_set_modem_signals [2019-10-13 21:01:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure digi_transmit_idle [2019-10-13 21:01:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure digi_rx_throttle [2019-10-13 21:01:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure digi_rx_unthrottle [2019-10-13 21:01:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure digi_set_termios [2019-10-13 21:01:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure digi_break_ctl [2019-10-13 21:01:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure digi_tiocmget [2019-10-13 21:01:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure digi_tiocmset [2019-10-13 21:01:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write [2019-10-13 21:01:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_bulk_callback [2019-10-13 21:01:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_room [2019-10-13 21:01:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure digi_chars_in_buffer [2019-10-13 21:01:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure digi_open [2019-10-13 21:01:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure digi_close [2019-10-13 21:01:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure digi_dtr_rts [2019-10-13 21:01:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure digi_startup_device [2019-10-13 21:01:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure digi_startup [2019-10-13 21:01:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure digi_disconnect [2019-10-13 21:01:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure digi_release [2019-10-13 21:01:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_probe [2019-10-13 21:01:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_remove [2019-10-13 21:01:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure digi_read_bulk_callback [2019-10-13 21:01:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure digi_read_inb_callback [2019-10-13 21:01:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure digi_read_oob_callback [2019-10-13 21:01:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure cond_wait_interruptible_timeout_irqrestore [2019-10-13 21:01:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-13 21:01:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_init [2019-10-13 21:01:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_module_init [2019-10-13 21:01:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_module_exit [2019-10-13 21:01:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 21:01:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 21:01:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_2 [2019-10-13 21:01:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_3 [2019-10-13 21:01:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:01:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 21:01:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-13 21:01:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-13 21:01:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-13 21:01:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-13 21:01:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2019-10-13 21:01:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2019-10-13 21:01:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2019-10-13 21:01:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2019-10-13 21:01:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 21:01:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-13 21:01:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-13 21:01:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-13 21:01:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:01:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:01:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:01:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-13 21:01:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 21:01:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:01:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-13 21:01:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-13 21:01:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-13 21:01:51,747 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-13 21:02:11,783 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:02:11,784 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 21:02:11,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:02:11 BoogieIcfgContainer [2019-10-13 21:02:11,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:02:11,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:02:11,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:02:11,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:02:11,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:01:47" (1/3) ... [2019-10-13 21:02:11,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f123072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:02:11, skipping insertion in model container [2019-10-13 21:02:11,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:50" (2/3) ... [2019-10-13 21:02:11,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f123072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:02:11, skipping insertion in model container [2019-10-13 21:02:11,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:02:11" (3/3) ... [2019-10-13 21:02:11,797 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i [2019-10-13 21:02:11,807 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:02:11,823 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:02:11,834 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:02:11,869 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:02:11,870 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:02:11,870 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:02:11,870 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:02:11,870 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:02:11,870 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:02:11,870 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:02:11,870 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:02:11,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states. [2019-10-13 21:02:11,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-13 21:02:11,961 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:02:11,962 INFO L380 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:02:11,964 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:02:11,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:02:11,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1189007720, now seen corresponding path program 1 times [2019-10-13 21:02:11,977 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:02:11,977 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154367082] [2019-10-13 21:02:11,978 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:11,978 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:11,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:02:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:02:13,055 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2019-10-13 21:02:13,055 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154367082] [2019-10-13 21:02:13,056 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:02:13,056 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:02:13,057 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850557621] [2019-10-13 21:02:13,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:02:13,063 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:02:13,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:02:13,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:02:13,081 INFO L87 Difference]: Start difference. First operand 1554 states. Second operand 3 states. [2019-10-13 21:02:13,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:02:13,911 INFO L93 Difference]: Finished difference Result 4190 states and 6093 transitions. [2019-10-13 21:02:13,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:02:13,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2019-10-13 21:02:13,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:02:13,956 INFO L225 Difference]: With dead ends: 4190 [2019-10-13 21:02:13,956 INFO L226 Difference]: Without dead ends: 2695 [2019-10-13 21:02:13,978 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:02:14,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2019-10-13 21:02:14,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 2692. [2019-10-13 21:02:14,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2692 states. [2019-10-13 21:02:14,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 3787 transitions. [2019-10-13 21:02:14,241 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 3787 transitions. Word has length 173 [2019-10-13 21:02:14,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:02:14,243 INFO L462 AbstractCegarLoop]: Abstraction has 2692 states and 3787 transitions. [2019-10-13 21:02:14,243 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:02:14,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 3787 transitions. [2019-10-13 21:02:14,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-13 21:02:14,248 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:02:14,248 INFO L380 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:02:14,248 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:02:14,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:02:14,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1490494452, now seen corresponding path program 1 times [2019-10-13 21:02:14,249 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:02:14,249 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622520775] [2019-10-13 21:02:14,250 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:14,250 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:14,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:02:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:02:14,694 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2019-10-13 21:02:14,695 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622520775] [2019-10-13 21:02:14,695 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:02:14,695 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:02:14,695 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013491004] [2019-10-13 21:02:14,698 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:02:14,698 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:02:14,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:02:14,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:02:14,699 INFO L87 Difference]: Start difference. First operand 2692 states and 3787 transitions. Second operand 3 states. [2019-10-13 21:02:15,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:02:15,345 INFO L93 Difference]: Finished difference Result 6618 states and 9287 transitions. [2019-10-13 21:02:15,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:02:15,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2019-10-13 21:02:15,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:02:15,377 INFO L225 Difference]: With dead ends: 6618 [2019-10-13 21:02:15,378 INFO L226 Difference]: Without dead ends: 3983 [2019-10-13 21:02:15,390 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:02:15,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2019-10-13 21:02:15,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 3979. [2019-10-13 21:02:15,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3979 states. [2019-10-13 21:02:15,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3979 states to 3979 states and 5564 transitions. [2019-10-13 21:02:15,562 INFO L78 Accepts]: Start accepts. Automaton has 3979 states and 5564 transitions. Word has length 173 [2019-10-13 21:02:15,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:02:15,563 INFO L462 AbstractCegarLoop]: Abstraction has 3979 states and 5564 transitions. [2019-10-13 21:02:15,563 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:02:15,563 INFO L276 IsEmpty]: Start isEmpty. Operand 3979 states and 5564 transitions. [2019-10-13 21:02:15,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2019-10-13 21:02:15,569 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:02:15,569 INFO L380 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 9, 9, 9, 9, 9, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:02:15,569 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:02:15,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:02:15,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1643294288, now seen corresponding path program 1 times [2019-10-13 21:02:15,570 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:02:15,570 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839635372] [2019-10-13 21:02:15,571 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:15,571 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:15,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:02:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:02:15,982 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2019-10-13 21:02:15,982 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839635372] [2019-10-13 21:02:15,983 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:02:15,983 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:02:15,983 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108341595] [2019-10-13 21:02:15,984 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:02:15,984 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:02:15,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:02:15,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:02:15,985 INFO L87 Difference]: Start difference. First operand 3979 states and 5564 transitions. Second operand 3 states. [2019-10-13 21:02:19,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:02:19,109 INFO L93 Difference]: Finished difference Result 9878 states and 13858 transitions. [2019-10-13 21:02:19,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:02:19,109 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 281 [2019-10-13 21:02:19,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:02:19,161 INFO L225 Difference]: With dead ends: 9878 [2019-10-13 21:02:19,161 INFO L226 Difference]: Without dead ends: 5956 [2019-10-13 21:02:19,184 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:02:19,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5956 states. [2019-10-13 21:02:19,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5956 to 5953. [2019-10-13 21:02:19,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5953 states. [2019-10-13 21:02:19,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5953 states to 5953 states and 8253 transitions. [2019-10-13 21:02:19,538 INFO L78 Accepts]: Start accepts. Automaton has 5953 states and 8253 transitions. Word has length 281 [2019-10-13 21:02:19,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:02:19,541 INFO L462 AbstractCegarLoop]: Abstraction has 5953 states and 8253 transitions. [2019-10-13 21:02:19,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:02:19,542 INFO L276 IsEmpty]: Start isEmpty. Operand 5953 states and 8253 transitions. [2019-10-13 21:02:19,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2019-10-13 21:02:19,554 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:02:19,554 INFO L380 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 9, 9, 9, 9, 9, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:02:19,554 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:02:19,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:02:19,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1341807556, now seen corresponding path program 1 times [2019-10-13 21:02:19,555 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:02:19,556 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066678662] [2019-10-13 21:02:19,557 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:19,557 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:19,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:02:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:02:20,037 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2019-10-13 21:02:20,038 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066678662] [2019-10-13 21:02:20,039 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:02:20,039 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:02:20,039 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732814898] [2019-10-13 21:02:20,040 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:02:20,040 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:02:20,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:02:20,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:02:20,041 INFO L87 Difference]: Start difference. First operand 5953 states and 8253 transitions. Second operand 3 states.