/usr/bin/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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -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-fb55353 [2019-11-07 02:29:17,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 02:29:17,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 02:29:17,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 02:29:17,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 02:29:17,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 02:29:17,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 02:29:17,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 02:29:17,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 02:29:17,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 02:29:17,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 02:29:17,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 02:29:17,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 02:29:17,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 02:29:17,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 02:29:17,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 02:29:17,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 02:29:17,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 02:29:17,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 02:29:17,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 02:29:17,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 02:29:17,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 02:29:17,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 02:29:17,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 02:29:17,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 02:29:17,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 02:29:17,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 02:29:17,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 02:29:17,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 02:29:17,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 02:29:17,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 02:29:17,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 02:29:17,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 02:29:17,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 02:29:17,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 02:29:17,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 02:29:17,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 02:29:17,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 02:29:17,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 02:29:17,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 02:29:17,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 02:29:17,540 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 [2019-11-07 02:29:17,562 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 02:29:17,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 02:29:17,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 02:29:17,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 02:29:17,565 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 02:29:17,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 02:29:17,565 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 02:29:17,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 02:29:17,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 02:29:17,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 02:29:17,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 02:29:17,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 02:29:17,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 02:29:17,568 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 02:29:17,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 02:29:17,568 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 02:29:17,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 02:29:17,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 02:29:17,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 02:29:17,569 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 02:29:17,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 02:29:17,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 02:29:17,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 02:29:17,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 02:29:17,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 02:29:17,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 02:29:17,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 02:29:17,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 02:29:17,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 02:29:17,852 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 02:29:17,865 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 02:29:17,869 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 02:29:17,871 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 02:29:17,871 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 02:29:17,872 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i [2019-11-07 02:29:17,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62678a1ba/4508c798a9cf41c5a709221251092dd8/FLAGe5128127a [2019-11-07 02:29:18,688 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 02:29:18,689 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i [2019-11-07 02:29:18,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62678a1ba/4508c798a9cf41c5a709221251092dd8/FLAGe5128127a [2019-11-07 02:29:18,804 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62678a1ba/4508c798a9cf41c5a709221251092dd8 [2019-11-07 02:29:18,816 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 02:29:18,818 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 02:29:18,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 02:29:18,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 02:29:18,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 02:29:18,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:29:18" (1/1) ... [2019-11-07 02:29:18,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6989e59c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:29:18, skipping insertion in model container [2019-11-07 02:29:18,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:29:18" (1/1) ... [2019-11-07 02:29:18,839 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 02:29:18,966 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 02:29:20,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 02:29:20,316 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 02:29:20,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 02:29:20,827 INFO L192 MainTranslator]: Completed translation [2019-11-07 02:29:20,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:29:20 WrapperNode [2019-11-07 02:29:20,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 02:29:20,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 02:29:20,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 02:29:20,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 02:29:20,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:29:20" (1/1) ... [2019-11-07 02:29:20,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:29:20" (1/1) ... [2019-11-07 02:29:20,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:29:20" (1/1) ... [2019-11-07 02:29:20,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:29:20" (1/1) ... [2019-11-07 02:29:21,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:29:20" (1/1) ... [2019-11-07 02:29:21,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:29:20" (1/1) ... [2019-11-07 02:29:21,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:29:20" (1/1) ... [2019-11-07 02:29:21,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 02:29:21,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 02:29:21,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 02:29:21,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 02:29:21,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:29:20" (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 [2019-11-07 02:29:21,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 02:29:21,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 02:29:21,263 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2019-11-07 02:29:21,263 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2019-11-07 02:29:21,264 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2019-11-07 02:29:21,264 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2019-11-07 02:29:21,264 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-11-07 02:29:21,265 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2019-11-07 02:29:21,265 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2019-11-07 02:29:21,265 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-11-07 02:29:21,265 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-11-07 02:29:21,266 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2019-11-07 02:29:21,266 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2019-11-07 02:29:21,266 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2019-11-07 02:29:21,267 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2019-11-07 02:29:21,267 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2019-11-07 02:29:21,268 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2019-11-07 02:29:21,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2019-11-07 02:29:21,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_int_must_check_helper [2019-11-07 02:29:21,268 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_buffer_init [2019-11-07 02:29:21,269 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_buffer_free [2019-11-07 02:29:21,269 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_buffer_write [2019-11-07 02:29:21,269 INFO L138 BoogieDeclarations]: Found implementation of procedure free_imon_context [2019-11-07 02:29:21,269 INFO L138 BoogieDeclarations]: Found implementation of procedure deregister_from_lirc [2019-11-07 02:29:21,269 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2019-11-07 02:29:21,269 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2019-11-07 02:29:21,270 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2019-11-07 02:29:21,270 INFO L138 BoogieDeclarations]: Found implementation of procedure vfd_write [2019-11-07 02:29:21,271 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_tx_callback [2019-11-07 02:29:21,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_open [2019-11-07 02:29:21,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_close [2019-11-07 02:29:21,271 INFO L138 BoogieDeclarations]: Found implementation of procedure submit_data [2019-11-07 02:29:21,271 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_incoming_packet [2019-11-07 02:29:21,271 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_rx_callback [2019-11-07 02:29:21,272 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_probe [2019-11-07 02:29:21,272 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2019-11-07 02:29:21,272 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_suspend [2019-11-07 02:29:21,272 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_resume [2019-11-07 02:29:21,273 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_init [2019-11-07 02:29:21,273 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_exit [2019-11-07 02:29:21,273 INFO L138 BoogieDeclarations]: Found implementation of procedure init_module [2019-11-07 02:29:21,273 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup_module [2019-11-07 02:29:21,273 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 02:29:21,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2019-11-07 02:29:21,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2019-11-07 02:29:21,273 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2019-11-07 02:29:21,274 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2019-11-07 02:29:21,274 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2019-11-07 02:29:21,275 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2019-11-07 02:29:21,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-07 02:29:21,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2019-11-07 02:29:21,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_alloc [2019-11-07 02:29:21,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_free [2019-11-07 02:29:21,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_in [2019-11-07 02:29:21,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_in_r [2019-11-07 02:29:21,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-11-07 02:29:21,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2019-11-07 02:29:21,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-11-07 02:29:21,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2019-11-07 02:29:21,277 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2019-11-07 02:29:21,278 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2019-11-07 02:29:21,278 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2019-11-07 02:29:21,278 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2019-11-07 02:29:21,278 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_all [2019-11-07 02:29:21,278 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2019-11-07 02:29:21,279 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2019-11-07 02:29:21,279 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2019-11-07 02:29:21,279 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2019-11-07 02:29:21,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2019-11-07 02:29:21,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-07 02:29:21,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2019-11-07 02:29:21,280 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_register_driver [2019-11-07 02:29:21,280 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_unregister_driver [2019-11-07 02:29:21,281 INFO L138 BoogieDeclarations]: Found implementation of procedure memdup_user [2019-11-07 02:29:21,281 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2019-11-07 02:29:21,281 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-11-07 02:29:21,282 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-11-07 02:29:21,282 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-11-07 02:29:21,282 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2019-11-07 02:29:21,282 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_find_interface [2019-11-07 02:29:21,283 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2019-11-07 02:29:21,283 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2019-11-07 02:29:21,283 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_match_id [2019-11-07 02:29:21,284 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2019-11-07 02:29:21,284 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-11-07 02:29:21,284 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2019-11-07 02:29:21,284 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_interruptible [2019-11-07 02:29:21,284 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_fmt [2019-11-07 02:29:21,284 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-07 02:29:21,285 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-07 02:29:21,285 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-07 02:29:21,285 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2019-11-07 02:29:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 02:29:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-11-07 02:29:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_fmt [2019-11-07 02:29:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure memdup_user [2019-11-07 02:29:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-07 02:29:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2019-11-07 02:29:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2019-11-07 02:29:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2019-11-07 02:29:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2019-11-07 02:29:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 02:29:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2019-11-07 02:29:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 02:29:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-11-07 02:29:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2019-11-07 02:29:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2019-11-07 02:29:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-11-07 02:29:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2019-11-07 02:29:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2019-11-07 02:29:21,288 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2019-11-07 02:29:21,288 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2019-11-07 02:29:21,288 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2019-11-07 02:29:21,288 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-11-07 02:29:21,288 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2019-11-07 02:29:21,289 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_interruptible [2019-11-07 02:29:21,289 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2019-11-07 02:29:21,289 INFO L130 BoogieDeclarations]: Found specification of procedure complete_all [2019-11-07 02:29:21,289 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-07 02:29:21,289 INFO L130 BoogieDeclarations]: Found specification of procedure init_module [2019-11-07 02:29:21,290 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup_module [2019-11-07 02:29:21,290 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-11-07 02:29:21,291 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-11-07 02:29:21,291 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-11-07 02:29:21,292 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2019-11-07 02:29:21,292 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2019-11-07 02:29:21,292 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2019-11-07 02:29:21,292 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2019-11-07 02:29:21,292 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2019-11-07 02:29:21,293 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2019-11-07 02:29:21,293 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2019-11-07 02:29:21,294 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2019-11-07 02:29:21,294 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2019-11-07 02:29:21,295 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2019-11-07 02:29:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 02:29:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2019-11-07 02:29:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure usb_match_id [2019-11-07 02:29:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure usb_find_interface [2019-11-07 02:29:21,299 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-11-07 02:29:21,299 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2019-11-07 02:29:21,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 02:29:21,299 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-11-07 02:29:21,300 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2019-11-07 02:29:21,300 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2019-11-07 02:29:21,307 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2019-11-07 02:29:21,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 02:29:21,307 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2019-11-07 02:29:21,307 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2019-11-07 02:29:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2019-11-07 02:29:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2019-11-07 02:29:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2019-11-07 02:29:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2019-11-07 02:29:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2019-11-07 02:29:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_int_must_check_helper [2019-11-07 02:29:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_alloc [2019-11-07 02:29:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_free [2019-11-07 02:29:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_in [2019-11-07 02:29:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_in_r [2019-11-07 02:29:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_buffer_init [2019-11-07 02:29:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_buffer_free [2019-11-07 02:29:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_buffer_write [2019-11-07 02:29:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_register_driver [2019-11-07 02:29:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_unregister_driver [2019-11-07 02:29:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure imon_probe [2019-11-07 02:29:21,310 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2019-11-07 02:29:21,311 INFO L130 BoogieDeclarations]: Found specification of procedure usb_rx_callback [2019-11-07 02:29:21,311 INFO L130 BoogieDeclarations]: Found specification of procedure usb_tx_callback [2019-11-07 02:29:21,311 INFO L130 BoogieDeclarations]: Found specification of procedure imon_resume [2019-11-07 02:29:21,311 INFO L130 BoogieDeclarations]: Found specification of procedure imon_suspend [2019-11-07 02:29:21,311 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2019-11-07 02:29:21,311 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2019-11-07 02:29:21,311 INFO L130 BoogieDeclarations]: Found specification of procedure vfd_write [2019-11-07 02:29:21,312 INFO L130 BoogieDeclarations]: Found specification of procedure ir_open [2019-11-07 02:29:21,312 INFO L130 BoogieDeclarations]: Found specification of procedure ir_close [2019-11-07 02:29:21,312 INFO L130 BoogieDeclarations]: Found specification of procedure imon_init [2019-11-07 02:29:21,313 INFO L130 BoogieDeclarations]: Found specification of procedure imon_exit [2019-11-07 02:29:21,313 INFO L130 BoogieDeclarations]: Found specification of procedure free_imon_context [2019-11-07 02:29:21,313 INFO L130 BoogieDeclarations]: Found specification of procedure deregister_from_lirc [2019-11-07 02:29:21,313 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2019-11-07 02:29:21,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-07 02:29:21,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 02:29:21,313 INFO L130 BoogieDeclarations]: Found specification of procedure submit_data [2019-11-07 02:29:21,314 INFO L130 BoogieDeclarations]: Found specification of procedure imon_incoming_packet [2019-11-07 02:29:21,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2019-11-07 02:29:21,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-07 02:29:21,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2019-11-07 02:29:21,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-07 02:29:21,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 02:29:21,315 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 02:29:21,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2019-11-07 02:29:21,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2019-11-07 02:29:21,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2019-11-07 02:29:21,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-11-07 02:29:21,315 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-07 02:29:21,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-07 02:29:21,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-07 02:29:21,316 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 02:29:21,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 02:29:21,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 02:29:21,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 02:29:21,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 02:29:21,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-07 02:29:21,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-07 02:29:21,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-07 02:29:21,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-11-07 02:29:23,330 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2019-11-07 02:29:30,308 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-07 02:29:30,343 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2019-11-07 02:29:30,343 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2019-11-07 02:29:30,538 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-07 02:29:30,591 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume !false; [2019-11-07 02:29:30,591 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume false; [2019-11-07 02:29:37,699 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 02:29:37,699 INFO L284 CfgBuilder]: Removed 40 assume(true) statements. [2019-11-07 02:29:37,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:29:37 BoogieIcfgContainer [2019-11-07 02:29:37,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 02:29:37,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 02:29:37,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 02:29:37,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 02:29:37,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:29:18" (1/3) ... [2019-11-07 02:29:37,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44dad0a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:29:37, skipping insertion in model container [2019-11-07 02:29:37,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:29:20" (2/3) ... [2019-11-07 02:29:37,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44dad0a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:29:37, skipping insertion in model container [2019-11-07 02:29:37,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:29:37" (3/3) ... [2019-11-07 02:29:37,711 INFO L109 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i [2019-11-07 02:29:37,722 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 02:29:37,739 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 02:29:37,749 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 02:29:37,791 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 02:29:37,792 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 02:29:37,792 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 02:29:37,792 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 02:29:37,792 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 02:29:37,792 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 02:29:37,792 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 02:29:37,792 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 02:29:37,822 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states. [2019-11-07 02:29:37,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-07 02:29:37,829 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:29:37,830 INFO L410 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] [2019-11-07 02:29:37,832 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:29:37,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:29:37,839 INFO L82 PathProgramCache]: Analyzing trace with hash 86399700, now seen corresponding path program 1 times [2019-11-07 02:29:37,848 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:29:37,849 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23422360] [2019-11-07 02:29:37,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:29:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:29:38,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:29:38,824 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23422360] [2019-11-07 02:29:38,825 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:29:38,826 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:29:38,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869776613] [2019-11-07 02:29:38,831 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:29:38,832 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:29:38,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:29:38,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:29:38,849 INFO L87 Difference]: Start difference. First operand 555 states. Second operand 3 states. [2019-11-07 02:29:39,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:29:39,096 INFO L93 Difference]: Finished difference Result 925 states and 1229 transitions. [2019-11-07 02:29:39,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:29:39,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-11-07 02:29:39,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:29:39,120 INFO L225 Difference]: With dead ends: 925 [2019-11-07 02:29:39,120 INFO L226 Difference]: Without dead ends: 595 [2019-11-07 02:29:39,128 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:29:39,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-11-07 02:29:39,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 591. [2019-11-07 02:29:39,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2019-11-07 02:29:39,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 740 transitions. [2019-11-07 02:29:39,267 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 740 transitions. Word has length 25 [2019-11-07 02:29:39,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:29:39,268 INFO L462 AbstractCegarLoop]: Abstraction has 591 states and 740 transitions. [2019-11-07 02:29:39,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:29:39,268 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 740 transitions. [2019-11-07 02:29:39,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-07 02:29:39,269 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:29:39,269 INFO L410 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] [2019-11-07 02:29:39,270 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:29:39,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:29:39,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1616917055, now seen corresponding path program 1 times [2019-11-07 02:29:39,270 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:29:39,270 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443349137] [2019-11-07 02:29:39,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:29:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:29:39,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:29:39,582 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443349137] [2019-11-07 02:29:39,582 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:29:39,583 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:29:39,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473754816] [2019-11-07 02:29:39,584 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:29:39,585 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:29:39,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:29:39,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:29:39,585 INFO L87 Difference]: Start difference. First operand 591 states and 740 transitions. Second operand 3 states. [2019-11-07 02:29:39,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:29:39,617 INFO L93 Difference]: Finished difference Result 593 states and 741 transitions. [2019-11-07 02:29:39,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:29:39,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-11-07 02:29:39,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:29:39,624 INFO L225 Difference]: With dead ends: 593 [2019-11-07 02:29:39,624 INFO L226 Difference]: Without dead ends: 581 [2019-11-07 02:29:39,625 INFO L630 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 [2019-11-07 02:29:39,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2019-11-07 02:29:39,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2019-11-07 02:29:39,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2019-11-07 02:29:39,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 726 transitions. [2019-11-07 02:29:39,700 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 726 transitions. Word has length 26 [2019-11-07 02:29:39,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:29:39,700 INFO L462 AbstractCegarLoop]: Abstraction has 581 states and 726 transitions. [2019-11-07 02:29:39,701 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:29:39,701 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 726 transitions. [2019-11-07 02:29:39,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-07 02:29:39,706 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:29:39,706 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:29:39,706 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:29:39,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:29:39,707 INFO L82 PathProgramCache]: Analyzing trace with hash 845106721, now seen corresponding path program 1 times [2019-11-07 02:29:39,707 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:29:39,707 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114715994] [2019-11-07 02:29:39,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:29:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:29:39,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:29:39,965 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114715994] [2019-11-07 02:29:39,965 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:29:39,965 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:29:39,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241608524] [2019-11-07 02:29:39,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:29:39,966 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:29:39,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:29:39,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:29:39,967 INFO L87 Difference]: Start difference. First operand 581 states and 726 transitions. Second operand 3 states. [2019-11-07 02:29:40,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:29:40,060 INFO L93 Difference]: Finished difference Result 1163 states and 1472 transitions. [2019-11-07 02:29:40,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:29:40,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2019-11-07 02:29:40,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:29:40,066 INFO L225 Difference]: With dead ends: 1163 [2019-11-07 02:29:40,066 INFO L226 Difference]: Without dead ends: 603 [2019-11-07 02:29:40,068 INFO L630 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 [2019-11-07 02:29:40,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-11-07 02:29:40,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 595. [2019-11-07 02:29:40,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-11-07 02:29:40,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 740 transitions. [2019-11-07 02:29:40,103 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 740 transitions. Word has length 54 [2019-11-07 02:29:40,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:29:40,103 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 740 transitions. [2019-11-07 02:29:40,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:29:40,104 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 740 transitions. [2019-11-07 02:29:40,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-11-07 02:29:40,107 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:29:40,108 INFO L410 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:29:40,108 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:29:40,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:29:40,108 INFO L82 PathProgramCache]: Analyzing trace with hash 35543351, now seen corresponding path program 1 times [2019-11-07 02:29:40,109 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:29:40,109 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228333742] [2019-11-07 02:29:40,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:29:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:29:40,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 02:29:40,355 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228333742] [2019-11-07 02:29:40,356 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:29:40,356 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:29:40,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931633002] [2019-11-07 02:29:40,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:29:40,357 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:29:40,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:29:40,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:29:40,358 INFO L87 Difference]: Start difference. First operand 595 states and 740 transitions. Second operand 3 states. [2019-11-07 02:29:40,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:29:40,466 INFO L93 Difference]: Finished difference Result 1193 states and 1502 transitions. [2019-11-07 02:29:40,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:29:40,467 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2019-11-07 02:29:40,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:29:40,472 INFO L225 Difference]: With dead ends: 1193 [2019-11-07 02:29:40,473 INFO L226 Difference]: Without dead ends: 619 [2019-11-07 02:29:40,477 INFO L630 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 [2019-11-07 02:29:40,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2019-11-07 02:29:40,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 607. [2019-11-07 02:29:40,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2019-11-07 02:29:40,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 752 transitions. [2019-11-07 02:29:40,519 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 752 transitions. Word has length 82 [2019-11-07 02:29:40,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:29:40,520 INFO L462 AbstractCegarLoop]: Abstraction has 607 states and 752 transitions. [2019-11-07 02:29:40,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:29:40,520 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 752 transitions. [2019-11-07 02:29:40,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-07 02:29:40,527 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:29:40,527 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 02:29:40,527 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:29:40,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:29:40,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1404506741, now seen corresponding path program 1 times [2019-11-07 02:29:40,531 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:29:40,531 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325761568] [2019-11-07 02:29:40,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:29:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:29:40,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 02:29:40,829 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325761568] [2019-11-07 02:29:40,830 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:29:40,830 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 02:29:40,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305409021] [2019-11-07 02:29:40,831 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 02:29:40,831 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:29:40,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 02:29:40,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-07 02:29:40,832 INFO L87 Difference]: Start difference. First operand 607 states and 752 transitions. Second operand 5 states. [2019-11-07 02:29:41,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:29:41,017 INFO L93 Difference]: Finished difference Result 1259 states and 1594 transitions. [2019-11-07 02:29:41,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 02:29:41,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2019-11-07 02:29:41,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:29:41,022 INFO L225 Difference]: With dead ends: 1259 [2019-11-07 02:29:41,022 INFO L226 Difference]: Without dead ends: 671 [2019-11-07 02:29:41,024 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-07 02:29:41,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2019-11-07 02:29:41,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 654. [2019-11-07 02:29:41,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2019-11-07 02:29:41,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 825 transitions. [2019-11-07 02:29:41,053 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 825 transitions. Word has length 92 [2019-11-07 02:29:41,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:29:41,053 INFO L462 AbstractCegarLoop]: Abstraction has 654 states and 825 transitions. [2019-11-07 02:29:41,053 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 02:29:41,054 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 825 transitions. [2019-11-07 02:29:41,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-07 02:29:41,055 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:29:41,055 INFO L410 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:29:41,056 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:29:41,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:29:41,056 INFO L82 PathProgramCache]: Analyzing trace with hash -328933617, now seen corresponding path program 1 times [2019-11-07 02:29:41,056 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:29:41,056 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10121445] [2019-11-07 02:29:41,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:29:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:29:41,361 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-11-07 02:29:41,361 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10121445] [2019-11-07 02:29:41,362 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:29:41,362 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:29:41,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160469557] [2019-11-07 02:29:41,363 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:29:41,363 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:29:41,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:29:41,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:29:41,364 INFO L87 Difference]: Start difference. First operand 654 states and 825 transitions. Second operand 3 states. [2019-11-07 02:29:41,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:29:41,487 INFO L93 Difference]: Finished difference Result 1329 states and 1686 transitions. [2019-11-07 02:29:41,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:29:41,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2019-11-07 02:29:41,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:29:41,496 INFO L225 Difference]: With dead ends: 1329 [2019-11-07 02:29:41,496 INFO L226 Difference]: Without dead ends: 696 [2019-11-07 02:29:41,499 INFO L630 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 [2019-11-07 02:29:41,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2019-11-07 02:29:41,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 684. [2019-11-07 02:29:41,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 684 states. [2019-11-07 02:29:41,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 859 transitions. [2019-11-07 02:29:41,542 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 859 transitions. Word has length 113 [2019-11-07 02:29:41,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:29:41,544 INFO L462 AbstractCegarLoop]: Abstraction has 684 states and 859 transitions. [2019-11-07 02:29:41,544 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:29:41,544 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 859 transitions. [2019-11-07 02:29:41,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-11-07 02:29:41,549 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:29:41,549 INFO L410 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:29:41,549 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:29:41,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:29:41,550 INFO L82 PathProgramCache]: Analyzing trace with hash 369441069, now seen corresponding path program 1 times [2019-11-07 02:29:41,550 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:29:41,550 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212942312] [2019-11-07 02:29:41,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:29:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:29:41,835 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-07 02:29:41,835 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212942312] [2019-11-07 02:29:41,836 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:29:41,836 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:29:41,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878540409] [2019-11-07 02:29:41,837 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:29:41,837 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:29:41,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:29:41,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:29:41,839 INFO L87 Difference]: Start difference. First operand 684 states and 859 transitions. Second operand 3 states. [2019-11-07 02:29:41,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:29:41,950 INFO L93 Difference]: Finished difference Result 1371 states and 1740 transitions. [2019-11-07 02:29:41,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:29:41,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2019-11-07 02:29:41,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:29:41,955 INFO L225 Difference]: With dead ends: 1371 [2019-11-07 02:29:41,956 INFO L226 Difference]: Without dead ends: 708 [2019-11-07 02:29:41,961 INFO L630 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 [2019-11-07 02:29:41,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2019-11-07 02:29:42,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 694. [2019-11-07 02:29:42,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2019-11-07 02:29:42,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 869 transitions. [2019-11-07 02:29:42,011 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 869 transitions. Word has length 121 [2019-11-07 02:29:42,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:29:42,016 INFO L462 AbstractCegarLoop]: Abstraction has 694 states and 869 transitions. [2019-11-07 02:29:42,016 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:29:42,016 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 869 transitions. [2019-11-07 02:29:42,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-11-07 02:29:42,019 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:29:42,020 INFO L410 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:29:42,020 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:29:42,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:29:42,020 INFO L82 PathProgramCache]: Analyzing trace with hash 7258583, now seen corresponding path program 1 times [2019-11-07 02:29:42,021 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:29:42,021 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742393138] [2019-11-07 02:29:42,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:29:42,180 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 02:29:42,181 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [162563378] [2019-11-07 02:29:42,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 02:29:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:29:43,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 4038 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 02:29:43,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 02:29:43,811 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-07 02:29:43,811 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 02:29:43,994 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-07 02:29:43,994 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742393138] [2019-11-07 02:29:43,994 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 02:29:43,995 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162563378] [2019-11-07 02:29:43,995 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:29:43,995 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-07 02:29:43,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256056494] [2019-11-07 02:29:43,996 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 02:29:43,996 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:29:43,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 02:29:43,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 02:29:43,997 INFO L87 Difference]: Start difference. First operand 694 states and 869 transitions. Second operand 4 states. [2019-11-07 02:29:44,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:29:44,143 INFO L93 Difference]: Finished difference Result 1401 states and 1780 transitions. [2019-11-07 02:29:44,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 02:29:44,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2019-11-07 02:29:44,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:29:44,149 INFO L225 Difference]: With dead ends: 1401 [2019-11-07 02:29:44,149 INFO L226 Difference]: Without dead ends: 728 [2019-11-07 02:29:44,152 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 02:29:44,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2019-11-07 02:29:44,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 695. [2019-11-07 02:29:44,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2019-11-07 02:29:44,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 864 transitions. [2019-11-07 02:29:44,187 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 864 transitions. Word has length 148 [2019-11-07 02:29:44,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:29:44,187 INFO L462 AbstractCegarLoop]: Abstraction has 695 states and 864 transitions. [2019-11-07 02:29:44,187 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 02:29:44,188 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 864 transitions. [2019-11-07 02:29:44,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-11-07 02:29:44,190 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:29:44,191 INFO L410 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:29:44,405 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 02:29:44,406 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:29:44,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:29:44,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1891148621, now seen corresponding path program 1 times [2019-11-07 02:29:44,406 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:29:44,407 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300208427] [2019-11-07 02:29:44,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:29:44,518 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 02:29:44,519 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399218615] [2019-11-07 02:29:44,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 02:29:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:29:46,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 4097 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 02:29:46,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 02:29:46,297 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-11-07 02:29:46,297 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 02:29:46,497 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-11-07 02:29:46,497 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300208427] [2019-11-07 02:29:46,498 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 02:29:46,498 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399218615] [2019-11-07 02:29:46,501 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:29:46,501 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-07 02:29:46,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155401561] [2019-11-07 02:29:46,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:29:46,504 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:29:46,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:29:46,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:29:46,510 INFO L87 Difference]: Start difference. First operand 695 states and 864 transitions. Second operand 3 states. [2019-11-07 02:29:46,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:29:46,606 INFO L93 Difference]: Finished difference Result 1091 states and 1374 transitions. [2019-11-07 02:29:46,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:29:46,607 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2019-11-07 02:29:46,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:29:46,612 INFO L225 Difference]: With dead ends: 1091 [2019-11-07 02:29:46,612 INFO L226 Difference]: Without dead ends: 714 [2019-11-07 02:29:46,614 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:29:46,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2019-11-07 02:29:46,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 697. [2019-11-07 02:29:46,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2019-11-07 02:29:46,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 866 transitions. [2019-11-07 02:29:46,647 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 866 transitions. Word has length 163 [2019-11-07 02:29:46,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:29:46,648 INFO L462 AbstractCegarLoop]: Abstraction has 697 states and 866 transitions. [2019-11-07 02:29:46,648 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:29:46,648 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 866 transitions. [2019-11-07 02:29:46,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-11-07 02:29:46,651 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:29:46,651 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:29:46,865 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 02:29:46,865 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:29:46,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:29:46,866 INFO L82 PathProgramCache]: Analyzing trace with hash -578504416, now seen corresponding path program 1 times [2019-11-07 02:29:46,866 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:29:46,866 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021802050] [2019-11-07 02:29:46,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:29:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:29:47,336 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 02:29:47,337 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021802050] [2019-11-07 02:29:47,337 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:29:47,337 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 02:29:47,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671995994] [2019-11-07 02:29:47,338 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 02:29:47,338 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:29:47,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 02:29:47,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 02:29:47,339 INFO L87 Difference]: Start difference. First operand 697 states and 866 transitions. Second operand 4 states. [2019-11-07 02:29:47,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:29:47,436 INFO L93 Difference]: Finished difference Result 1469 states and 1879 transitions. [2019-11-07 02:29:47,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 02:29:47,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2019-11-07 02:29:47,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:29:47,442 INFO L225 Difference]: With dead ends: 1469 [2019-11-07 02:29:47,442 INFO L226 Difference]: Without dead ends: 793 [2019-11-07 02:29:47,444 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 02:29:47,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2019-11-07 02:29:47,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 745. [2019-11-07 02:29:47,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 745 states. [2019-11-07 02:29:47,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 946 transitions. [2019-11-07 02:29:47,489 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 946 transitions. Word has length 160 [2019-11-07 02:29:47,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:29:47,492 INFO L462 AbstractCegarLoop]: Abstraction has 745 states and 946 transitions. [2019-11-07 02:29:47,492 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 02:29:47,492 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 946 transitions. [2019-11-07 02:29:47,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-11-07 02:29:47,494 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:29:47,495 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:29:47,495 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:29:47,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:29:47,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1987886609, now seen corresponding path program 1 times [2019-11-07 02:29:47,496 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:29:47,496 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79836821] [2019-11-07 02:29:47,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:29:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:29:47,877 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 02:29:47,878 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79836821] [2019-11-07 02:29:47,878 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237214610] [2019-11-07 02:29:47,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 02:29:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:29:49,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 4138 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 02:29:49,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 02:29:49,879 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 02:29:49,880 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 02:29:50,062 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 02:29:50,062 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1443949407] [2019-11-07 02:29:50,093 INFO L159 IcfgInterpreter]: Started Sifa with 144 locations of interest [2019-11-07 02:29:50,094 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 02:29:50,100 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 02:29:50,107 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 02:29:50,108 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs