java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 20:22:26,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 20:22:26,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 20:22:26,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 20:22:26,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 20:22:26,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 20:22:26,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 20:22:26,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 20:22:26,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 20:22:26,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 20:22:26,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 20:22:26,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 20:22:26,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 20:22:26,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 20:22:26,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 20:22:26,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 20:22:26,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 20:22:26,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 20:22:26,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 20:22:26,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 20:22:26,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 20:22:26,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 20:22:26,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 20:22:26,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 20:22:26,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 20:22:26,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 20:22:26,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 20:22:26,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 20:22:26,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 20:22:26,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 20:22:26,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 20:22:26,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 20:22:26,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 20:22:26,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 20:22:26,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 20:22:26,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 20:22:26,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 20:22:26,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 20:22:26,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 20:22:26,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 20:22:26,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 20:22:26,834 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 20:22:26,860 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 20:22:26,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 20:22:26,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 20:22:26,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 20:22:26,862 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 20:22:26,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 20:22:26,864 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 20:22:26,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 20:22:26,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 20:22:26,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 20:22:26,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 20:22:26,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 20:22:26,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 20:22:26,867 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 20:22:26,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 20:22:26,867 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 20:22:26,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 20:22:26,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 20:22:26,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 20:22:26,868 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 20:22:26,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 20:22:26,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 20:22:26,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 20:22:26,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 20:22:26,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 20:22:26,869 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 20:22:26,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 20:22:26,869 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 20:22:26,870 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 20:22:27,150 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 20:22:27,168 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 20:22:27,172 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 20:22:27,173 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 20:22:27,174 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 20:22:27,174 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i [2019-10-13 20:22:27,242 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/702cecba8/f4ccf57a35b54f778a0961b1f1d00aa9/FLAGf2699bf27 [2019-10-13 20:22:28,026 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 20:22:28,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i [2019-10-13 20:22:28,062 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/702cecba8/f4ccf57a35b54f778a0961b1f1d00aa9/FLAGf2699bf27 [2019-10-13 20:22:28,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/702cecba8/f4ccf57a35b54f778a0961b1f1d00aa9 [2019-10-13 20:22:28,105 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 20:22:28,106 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 20:22:28,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 20:22:28,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 20:22:28,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 20:22:28,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:22:28" (1/1) ... [2019-10-13 20:22:28,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605e432a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:28, skipping insertion in model container [2019-10-13 20:22:28,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:22:28" (1/1) ... [2019-10-13 20:22:28,122 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 20:22:28,227 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 20:22:29,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:22:29,727 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 20:22:29,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:22:30,177 INFO L192 MainTranslator]: Completed translation [2019-10-13 20:22:30,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:30 WrapperNode [2019-10-13 20:22:30,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 20:22:30,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 20:22:30,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 20:22:30,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 20:22:30,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:30" (1/1) ... [2019-10-13 20:22:30,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:30" (1/1) ... [2019-10-13 20:22:30,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:30" (1/1) ... [2019-10-13 20:22:30,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:30" (1/1) ... [2019-10-13 20:22:30,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:30" (1/1) ... [2019-10-13 20:22:30,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:30" (1/1) ... [2019-10-13 20:22:30,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:30" (1/1) ... [2019-10-13 20:22:30,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 20:22:30,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 20:22:30,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 20:22:30,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 20:22:30,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 20:22:30,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 20:22:30,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 20:22:30,560 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2019-10-13 20:22:30,560 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2019-10-13 20:22:30,560 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2019-10-13 20:22:30,561 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2019-10-13 20:22:30,561 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-13 20:22:30,561 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2019-10-13 20:22:30,562 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2019-10-13 20:22:30,562 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-13 20:22:30,563 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-13 20:22:30,563 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2019-10-13 20:22:30,563 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2019-10-13 20:22:30,564 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2019-10-13 20:22:30,564 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2019-10-13 20:22:30,564 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2019-10-13 20:22:30,567 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2019-10-13 20:22:30,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2019-10-13 20:22:30,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_int_must_check_helper [2019-10-13 20:22:30,567 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_buffer_init [2019-10-13 20:22:30,568 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_buffer_free [2019-10-13 20:22:30,568 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_buffer_write [2019-10-13 20:22:30,568 INFO L138 BoogieDeclarations]: Found implementation of procedure free_imon_context [2019-10-13 20:22:30,568 INFO L138 BoogieDeclarations]: Found implementation of procedure deregister_from_lirc [2019-10-13 20:22:30,568 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2019-10-13 20:22:30,568 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2019-10-13 20:22:30,568 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2019-10-13 20:22:30,569 INFO L138 BoogieDeclarations]: Found implementation of procedure vfd_write [2019-10-13 20:22:30,569 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_tx_callback [2019-10-13 20:22:30,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_open [2019-10-13 20:22:30,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_close [2019-10-13 20:22:30,569 INFO L138 BoogieDeclarations]: Found implementation of procedure submit_data [2019-10-13 20:22:30,569 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_incoming_packet [2019-10-13 20:22:30,570 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_rx_callback [2019-10-13 20:22:30,570 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_probe [2019-10-13 20:22:30,570 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2019-10-13 20:22:30,570 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_suspend [2019-10-13 20:22:30,570 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_resume [2019-10-13 20:22:30,571 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_init [2019-10-13 20:22:30,571 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_exit [2019-10-13 20:22:30,571 INFO L138 BoogieDeclarations]: Found implementation of procedure init_module [2019-10-13 20:22:30,571 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup_module [2019-10-13 20:22:30,572 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 20:22:30,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2019-10-13 20:22:30,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2019-10-13 20:22:30,572 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2019-10-13 20:22:30,572 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2019-10-13 20:22:30,572 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2019-10-13 20:22:30,573 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2019-10-13 20:22:30,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 20:22:30,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2019-10-13 20:22:30,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_alloc [2019-10-13 20:22:30,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_free [2019-10-13 20:22:30,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_in [2019-10-13 20:22:30,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_in_r [2019-10-13 20:22:30,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-13 20:22:30,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2019-10-13 20:22:30,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-13 20:22:30,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2019-10-13 20:22:30,574 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2019-10-13 20:22:30,574 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2019-10-13 20:22:30,574 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2019-10-13 20:22:30,575 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2019-10-13 20:22:30,575 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_all [2019-10-13 20:22:30,575 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2019-10-13 20:22:30,575 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2019-10-13 20:22:30,576 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2019-10-13 20:22:30,576 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2019-10-13 20:22:30,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2019-10-13 20:22:30,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 20:22:30,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2019-10-13 20:22:30,576 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_register_driver [2019-10-13 20:22:30,576 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_unregister_driver [2019-10-13 20:22:30,577 INFO L138 BoogieDeclarations]: Found implementation of procedure memdup_user [2019-10-13 20:22:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2019-10-13 20:22:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-13 20:22:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 20:22:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-13 20:22:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2019-10-13 20:22:30,579 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_find_interface [2019-10-13 20:22:30,579 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2019-10-13 20:22:30,580 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2019-10-13 20:22:30,580 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_match_id [2019-10-13 20:22:30,580 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2019-10-13 20:22:30,581 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-13 20:22:30,581 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2019-10-13 20:22:30,581 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_interruptible [2019-10-13 20:22:30,582 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_fmt [2019-10-13 20:22:30,582 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 20:22:30,582 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 20:22:30,583 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-13 20:22:30,583 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2019-10-13 20:22:30,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 20:22:30,583 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 20:22:30,583 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_fmt [2019-10-13 20:22:30,583 INFO L130 BoogieDeclarations]: Found specification of procedure memdup_user [2019-10-13 20:22:30,583 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-13 20:22:30,584 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2019-10-13 20:22:30,584 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2019-10-13 20:22:30,584 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2019-10-13 20:22:30,584 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2019-10-13 20:22:30,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 20:22:30,584 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2019-10-13 20:22:30,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 20:22:30,585 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-13 20:22:30,585 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2019-10-13 20:22:30,585 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2019-10-13 20:22:30,585 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-13 20:22:30,585 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2019-10-13 20:22:30,585 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2019-10-13 20:22:30,585 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2019-10-13 20:22:30,586 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2019-10-13 20:22:30,586 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2019-10-13 20:22:30,586 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-13 20:22:30,587 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2019-10-13 20:22:30,587 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_interruptible [2019-10-13 20:22:30,588 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2019-10-13 20:22:30,588 INFO L130 BoogieDeclarations]: Found specification of procedure complete_all [2019-10-13 20:22:30,588 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 20:22:30,588 INFO L130 BoogieDeclarations]: Found specification of procedure init_module [2019-10-13 20:22:30,589 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup_module [2019-10-13 20:22:30,589 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-13 20:22:30,589 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-13 20:22:30,590 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-13 20:22:30,591 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2019-10-13 20:22:30,592 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2019-10-13 20:22:30,592 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2019-10-13 20:22:30,592 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2019-10-13 20:22:30,592 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2019-10-13 20:22:30,592 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2019-10-13 20:22:30,592 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2019-10-13 20:22:30,593 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2019-10-13 20:22:30,593 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2019-10-13 20:22:30,594 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2019-10-13 20:22:30,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 20:22:30,594 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2019-10-13 20:22:30,595 INFO L130 BoogieDeclarations]: Found specification of procedure usb_match_id [2019-10-13 20:22:30,598 INFO L130 BoogieDeclarations]: Found specification of procedure usb_find_interface [2019-10-13 20:22:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-13 20:22:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2019-10-13 20:22:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 20:22:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-13 20:22:30,600 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2019-10-13 20:22:30,600 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2019-10-13 20:22:30,606 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2019-10-13 20:22:30,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 20:22:30,606 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2019-10-13 20:22:30,607 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2019-10-13 20:22:30,607 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2019-10-13 20:22:30,607 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2019-10-13 20:22:30,607 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2019-10-13 20:22:30,607 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2019-10-13 20:22:30,607 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2019-10-13 20:22:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_int_must_check_helper [2019-10-13 20:22:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_alloc [2019-10-13 20:22:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_free [2019-10-13 20:22:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_in [2019-10-13 20:22:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_in_r [2019-10-13 20:22:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_buffer_init [2019-10-13 20:22:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_buffer_free [2019-10-13 20:22:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_buffer_write [2019-10-13 20:22:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_register_driver [2019-10-13 20:22:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_unregister_driver [2019-10-13 20:22:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure imon_probe [2019-10-13 20:22:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2019-10-13 20:22:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure usb_rx_callback [2019-10-13 20:22:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure usb_tx_callback [2019-10-13 20:22:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure imon_resume [2019-10-13 20:22:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure imon_suspend [2019-10-13 20:22:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2019-10-13 20:22:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2019-10-13 20:22:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure vfd_write [2019-10-13 20:22:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure ir_open [2019-10-13 20:22:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure ir_close [2019-10-13 20:22:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure imon_init [2019-10-13 20:22:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure imon_exit [2019-10-13 20:22:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure free_imon_context [2019-10-13 20:22:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure deregister_from_lirc [2019-10-13 20:22:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2019-10-13 20:22:30,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-13 20:22:30,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 20:22:30,611 INFO L130 BoogieDeclarations]: Found specification of procedure submit_data [2019-10-13 20:22:30,611 INFO L130 BoogieDeclarations]: Found specification of procedure imon_incoming_packet [2019-10-13 20:22:30,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2019-10-13 20:22:30,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 20:22:30,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2019-10-13 20:22:30,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 20:22:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 20:22:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 20:22:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2019-10-13 20:22:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2019-10-13 20:22:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2019-10-13 20:22:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-13 20:22:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 20:22:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 20:22:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 20:22:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 20:22:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 20:22:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 20:22:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 20:22:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 20:22:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-13 20:22:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-13 20:22:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-13 20:22:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-13 20:22:32,842 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2019-10-13 20:22:39,374 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 20:22:39,405 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2019-10-13 20:22:39,405 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2019-10-13 20:22:39,592 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 20:22:39,659 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume !false; [2019-10-13 20:22:39,660 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume false; [2019-10-13 20:22:40,112 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 20:22:40,112 INFO L284 CfgBuilder]: Removed 40 assume(true) statements. [2019-10-13 20:22:40,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:22:40 BoogieIcfgContainer [2019-10-13 20:22:40,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 20:22:40,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 20:22:40,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 20:22:40,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 20:22:40,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:22:28" (1/3) ... [2019-10-13 20:22:40,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1acdc016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:22:40, skipping insertion in model container [2019-10-13 20:22:40,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:30" (2/3) ... [2019-10-13 20:22:40,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1acdc016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:22:40, skipping insertion in model container [2019-10-13 20:22:40,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:22:40" (3/3) ... [2019-10-13 20:22:40,123 INFO L109 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i [2019-10-13 20:22:40,134 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 20:22:40,144 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 20:22:40,157 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 20:22:40,190 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 20:22:40,190 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 20:22:40,190 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 20:22:40,190 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 20:22:40,190 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 20:22:40,191 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 20:22:40,191 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 20:22:40,191 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 20:22:40,226 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states. [2019-10-13 20:22:40,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-13 20:22:40,234 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:22:40,235 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:22:40,238 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:22:40,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:22:40,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1136421439, now seen corresponding path program 1 times [2019-10-13 20:22:40,255 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:22:40,255 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248193860] [2019-10-13 20:22:40,256 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:40,256 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:40,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:22:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:22:41,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:22:41,109 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248193860] [2019-10-13 20:22:41,110 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:22:41,110 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:22:41,111 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371952283] [2019-10-13 20:22:41,116 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:22:41,118 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:22:41,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:22:41,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:22:41,136 INFO L87 Difference]: Start difference. First operand 690 states. Second operand 3 states. [2019-10-13 20:22:41,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:22:41,338 INFO L93 Difference]: Finished difference Result 1239 states and 1738 transitions. [2019-10-13 20:22:41,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:22:41,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2019-10-13 20:22:41,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:22:41,384 INFO L225 Difference]: With dead ends: 1239 [2019-10-13 20:22:41,385 INFO L226 Difference]: Without dead ends: 818 [2019-10-13 20:22:41,398 INFO L600 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 [2019-10-13 20:22:41,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2019-10-13 20:22:41,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 815. [2019-10-13 20:22:41,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2019-10-13 20:22:41,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1025 transitions. [2019-10-13 20:22:41,544 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1025 transitions. Word has length 30 [2019-10-13 20:22:41,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:22:41,544 INFO L462 AbstractCegarLoop]: Abstraction has 815 states and 1025 transitions. [2019-10-13 20:22:41,544 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:22:41,545 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1025 transitions. [2019-10-13 20:22:41,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-13 20:22:41,548 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:22:41,548 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:22:41,548 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:22:41,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:22:41,549 INFO L82 PathProgramCache]: Analyzing trace with hash -869666700, now seen corresponding path program 1 times [2019-10-13 20:22:41,549 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:22:41,549 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779107655] [2019-10-13 20:22:41,549 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:41,549 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:41,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:22:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:22:41,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:22:41,836 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779107655] [2019-10-13 20:22:41,837 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:22:41,837 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:22:41,837 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309245428] [2019-10-13 20:22:41,839 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:22:41,839 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:22:41,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:22:41,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:22:41,840 INFO L87 Difference]: Start difference. First operand 815 states and 1025 transitions. Second operand 3 states. [2019-10-13 20:22:41,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:22:41,867 INFO L93 Difference]: Finished difference Result 817 states and 1026 transitions. [2019-10-13 20:22:41,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:22:41,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2019-10-13 20:22:41,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:22:41,872 INFO L225 Difference]: With dead ends: 817 [2019-10-13 20:22:41,872 INFO L226 Difference]: Without dead ends: 803 [2019-10-13 20:22:41,874 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:22:41,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2019-10-13 20:22:41,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2019-10-13 20:22:41,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2019-10-13 20:22:41,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1009 transitions. [2019-10-13 20:22:41,921 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1009 transitions. Word has length 31 [2019-10-13 20:22:41,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:22:41,922 INFO L462 AbstractCegarLoop]: Abstraction has 803 states and 1009 transitions. [2019-10-13 20:22:41,922 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:22:41,922 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1009 transitions. [2019-10-13 20:22:41,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-10-13 20:22:41,925 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:22:41,926 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:22:41,926 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:22:41,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:22:41,926 INFO L82 PathProgramCache]: Analyzing trace with hash -329654060, now seen corresponding path program 1 times [2019-10-13 20:22:41,927 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:22:41,927 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896193353] [2019-10-13 20:22:41,927 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:41,927 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:41,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:22:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:22:42,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:22:42,192 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896193353] [2019-10-13 20:22:42,193 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:22:42,193 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:22:42,193 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469715825] [2019-10-13 20:22:42,194 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:22:42,194 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:22:42,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:22:42,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:22:42,196 INFO L87 Difference]: Start difference. First operand 803 states and 1009 transitions. Second operand 3 states. [2019-10-13 20:22:42,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:22:42,321 INFO L93 Difference]: Finished difference Result 1604 states and 2036 transitions. [2019-10-13 20:22:42,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:22:42,322 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2019-10-13 20:22:42,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:22:42,330 INFO L225 Difference]: With dead ends: 1604 [2019-10-13 20:22:42,331 INFO L226 Difference]: Without dead ends: 827 [2019-10-13 20:22:42,333 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:22:42,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2019-10-13 20:22:42,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 817. [2019-10-13 20:22:42,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 817 states. [2019-10-13 20:22:42,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1023 transitions. [2019-10-13 20:22:42,388 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1023 transitions. Word has length 64 [2019-10-13 20:22:42,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:22:42,389 INFO L462 AbstractCegarLoop]: Abstraction has 817 states and 1023 transitions. [2019-10-13 20:22:42,389 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:22:42,389 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1023 transitions. [2019-10-13 20:22:42,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-13 20:22:42,401 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:22:42,402 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 20:22:42,402 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:22:42,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:22:42,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1451896951, now seen corresponding path program 1 times [2019-10-13 20:22:42,403 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:22:42,403 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799947563] [2019-10-13 20:22:42,403 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:42,404 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:42,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:22:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:22:42,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 20:22:42,706 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799947563] [2019-10-13 20:22:42,706 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:22:42,706 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 20:22:42,706 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059561281] [2019-10-13 20:22:42,707 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 20:22:42,707 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:22:42,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 20:22:42,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 20:22:42,708 INFO L87 Difference]: Start difference. First operand 817 states and 1023 transitions. Second operand 5 states. [2019-10-13 20:22:42,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:22:42,884 INFO L93 Difference]: Finished difference Result 1682 states and 2138 transitions. [2019-10-13 20:22:42,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 20:22:42,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2019-10-13 20:22:42,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:22:42,890 INFO L225 Difference]: With dead ends: 1682 [2019-10-13 20:22:42,890 INFO L226 Difference]: Without dead ends: 889 [2019-10-13 20:22:42,893 INFO L600 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 [2019-10-13 20:22:42,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2019-10-13 20:22:42,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 868. [2019-10-13 20:22:42,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 868 states. [2019-10-13 20:22:42,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1100 transitions. [2019-10-13 20:22:42,926 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1100 transitions. Word has length 111 [2019-10-13 20:22:42,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:22:42,926 INFO L462 AbstractCegarLoop]: Abstraction has 868 states and 1100 transitions. [2019-10-13 20:22:42,927 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 20:22:42,927 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1100 transitions. [2019-10-13 20:22:42,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-13 20:22:42,928 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:22:42,928 INFO L380 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:22:42,929 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:22:42,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:22:42,929 INFO L82 PathProgramCache]: Analyzing trace with hash -860033774, now seen corresponding path program 1 times [2019-10-13 20:22:42,929 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:22:42,930 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277539623] [2019-10-13 20:22:42,930 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:42,930 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:42,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:22:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:22:43,191 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 20:22:43,192 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277539623] [2019-10-13 20:22:43,192 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:22:43,192 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:22:43,192 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258101362] [2019-10-13 20:22:43,193 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:22:43,193 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:22:43,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:22:43,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:22:43,194 INFO L87 Difference]: Start difference. First operand 868 states and 1100 transitions. Second operand 3 states. [2019-10-13 20:22:43,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:22:43,285 INFO L93 Difference]: Finished difference Result 1736 states and 2220 transitions. [2019-10-13 20:22:43,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:22:43,285 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2019-10-13 20:22:43,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:22:43,291 INFO L225 Difference]: With dead ends: 1736 [2019-10-13 20:22:43,292 INFO L226 Difference]: Without dead ends: 894 [2019-10-13 20:22:43,296 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:22:43,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2019-10-13 20:22:43,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 880. [2019-10-13 20:22:43,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2019-10-13 20:22:43,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1112 transitions. [2019-10-13 20:22:43,339 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1112 transitions. Word has length 104 [2019-10-13 20:22:43,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:22:43,339 INFO L462 AbstractCegarLoop]: Abstraction has 880 states and 1112 transitions. [2019-10-13 20:22:43,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:22:43,340 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1112 transitions. [2019-10-13 20:22:43,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-13 20:22:43,341 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:22:43,342 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 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] [2019-10-13 20:22:43,342 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:22:43,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:22:43,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1406187874, now seen corresponding path program 1 times [2019-10-13 20:22:43,343 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:22:43,343 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124992038] [2019-10-13 20:22:43,343 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:43,343 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:43,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:22:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:22:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-13 20:22:43,691 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124992038] [2019-10-13 20:22:43,691 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:22:43,691 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:22:43,692 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781265821] [2019-10-13 20:22:43,693 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:22:43,693 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:22:43,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:22:43,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:22:43,694 INFO L87 Difference]: Start difference. First operand 880 states and 1112 transitions. Second operand 3 states. [2019-10-13 20:22:43,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:22:43,765 INFO L93 Difference]: Finished difference Result 1800 states and 2292 transitions. [2019-10-13 20:22:43,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:22:43,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2019-10-13 20:22:43,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:22:43,772 INFO L225 Difference]: With dead ends: 1800 [2019-10-13 20:22:43,772 INFO L226 Difference]: Without dead ends: 946 [2019-10-13 20:22:43,778 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:22:43,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2019-10-13 20:22:43,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 933. [2019-10-13 20:22:43,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2019-10-13 20:22:43,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1182 transitions. [2019-10-13 20:22:43,817 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1182 transitions. Word has length 142 [2019-10-13 20:22:43,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:22:43,819 INFO L462 AbstractCegarLoop]: Abstraction has 933 states and 1182 transitions. [2019-10-13 20:22:43,819 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:22:43,819 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1182 transitions. [2019-10-13 20:22:43,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-13 20:22:43,825 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:22:43,825 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-13 20:22:43,826 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:22:43,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:22:43,826 INFO L82 PathProgramCache]: Analyzing trace with hash 199957720, now seen corresponding path program 1 times [2019-10-13 20:22:43,826 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:22:43,826 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778030206] [2019-10-13 20:22:43,827 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:43,827 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:43,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:22:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:22:44,087 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-13 20:22:44,089 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778030206] [2019-10-13 20:22:44,089 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:22:44,090 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:22:44,090 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424069057] [2019-10-13 20:22:44,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:22:44,092 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:22:44,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:22:44,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:22:44,093 INFO L87 Difference]: Start difference. First operand 933 states and 1182 transitions. Second operand 3 states. [2019-10-13 20:22:44,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:22:44,223 INFO L93 Difference]: Finished difference Result 1866 states and 2384 transitions. [2019-10-13 20:22:44,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:22:44,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2019-10-13 20:22:44,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:22:44,232 INFO L225 Difference]: With dead ends: 1866 [2019-10-13 20:22:44,232 INFO L226 Difference]: Without dead ends: 959 [2019-10-13 20:22:44,237 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:22:44,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2019-10-13 20:22:44,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 943. [2019-10-13 20:22:44,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2019-10-13 20:22:44,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1192 transitions. [2019-10-13 20:22:44,303 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1192 transitions. Word has length 154 [2019-10-13 20:22:44,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:22:44,306 INFO L462 AbstractCegarLoop]: Abstraction has 943 states and 1192 transitions. [2019-10-13 20:22:44,306 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:22:44,311 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1192 transitions. [2019-10-13 20:22:44,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-13 20:22:44,318 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:22:44,318 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2019-10-13 20:22:44,319 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:22:44,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:22:44,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1713023539, now seen corresponding path program 1 times [2019-10-13 20:22:44,320 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:22:44,320 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241180657] [2019-10-13 20:22:44,320 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:44,320 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:44,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:22:44,475 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 20:22:44,475 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [314970513] [2019-10-13 20:22:44,476 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 [2019-10-13 20:22:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:22:46,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 4078 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 20:22:46,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 20:22:46,146 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-13 20:22:46,146 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 20:22:46,369 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-13 20:22:46,369 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241180657] [2019-10-13 20:22:46,369 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 20:22:46,370 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314970513] [2019-10-13 20:22:46,370 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:22:46,370 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-13 20:22:46,370 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96507799] [2019-10-13 20:22:46,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 20:22:46,371 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:22:46,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 20:22:46,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 20:22:46,372 INFO L87 Difference]: Start difference. First operand 943 states and 1192 transitions. Second operand 4 states. [2019-10-13 20:22:46,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:22:46,581 INFO L93 Difference]: Finished difference Result 1940 states and 2502 transitions. [2019-10-13 20:22:46,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 20:22:46,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 189 [2019-10-13 20:22:46,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:22:46,588 INFO L225 Difference]: With dead ends: 1940 [2019-10-13 20:22:46,589 INFO L226 Difference]: Without dead ends: 1023 [2019-10-13 20:22:46,594 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 20:22:46,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2019-10-13 20:22:46,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 953. [2019-10-13 20:22:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2019-10-13 20:22:46,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1204 transitions. [2019-10-13 20:22:46,661 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1204 transitions. Word has length 189 [2019-10-13 20:22:46,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:22:46,662 INFO L462 AbstractCegarLoop]: Abstraction has 953 states and 1204 transitions. [2019-10-13 20:22:46,662 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 20:22:46,662 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1204 transitions. [2019-10-13 20:22:46,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-10-13 20:22:46,667 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:22:46,667 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:22:46,881 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 20:22:46,881 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:22:46,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:22:46,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1867378716, now seen corresponding path program 1 times [2019-10-13 20:22:46,882 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:22:46,883 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850633003] [2019-10-13 20:22:46,883 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:46,883 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:46,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:22:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:22:47,261 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 20:22:47,262 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850633003] [2019-10-13 20:22:47,262 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:22:47,262 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 20:22:47,262 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618966955] [2019-10-13 20:22:47,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 20:22:47,263 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:22:47,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 20:22:47,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 20:22:47,264 INFO L87 Difference]: Start difference. First operand 953 states and 1204 transitions. Second operand 4 states. [2019-10-13 20:22:47,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:22:47,396 INFO L93 Difference]: Finished difference Result 1984 states and 2557 transitions. [2019-10-13 20:22:47,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 20:22:47,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 193 [2019-10-13 20:22:47,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:22:47,404 INFO L225 Difference]: With dead ends: 1984 [2019-10-13 20:22:47,404 INFO L226 Difference]: Without dead ends: 1057 [2019-10-13 20:22:47,409 INFO L600 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 [2019-10-13 20:22:47,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2019-10-13 20:22:47,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1005. [2019-10-13 20:22:47,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2019-10-13 20:22:47,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1288 transitions. [2019-10-13 20:22:47,460 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1288 transitions. Word has length 193 [2019-10-13 20:22:47,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:22:47,460 INFO L462 AbstractCegarLoop]: Abstraction has 1005 states and 1288 transitions. [2019-10-13 20:22:47,460 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 20:22:47,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1288 transitions. [2019-10-13 20:22:47,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-10-13 20:22:47,464 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:22:47,465 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:22:47,465 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:22:47,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:22:47,465 INFO L82 PathProgramCache]: Analyzing trace with hash -510780855, now seen corresponding path program 1 times [2019-10-13 20:22:47,466 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:22:47,466 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159395235] [2019-10-13 20:22:47,466 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:47,466 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:47,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:22:47,612 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 20:22:47,619 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2084137282] [2019-10-13 20:22:47,620 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 [2019-10-13 20:22:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:22:49,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 4146 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 20:22:49,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 20:22:49,286 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-10-13 20:22:49,286 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 20:22:49,511 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-10-13 20:22:49,512 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159395235] [2019-10-13 20:22:49,512 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 20:22:49,512 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084137282] [2019-10-13 20:22:49,513 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:22:49,513 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-13 20:22:49,513 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175995330] [2019-10-13 20:22:49,514 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:22:49,514 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:22:49,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:22:49,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:22:49,515 INFO L87 Difference]: Start difference. First operand 1005 states and 1288 transitions. Second operand 3 states. [2019-10-13 20:22:49,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:22:49,630 INFO L93 Difference]: Finished difference Result 2024 states and 2621 transitions. [2019-10-13 20:22:49,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:22:49,631 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2019-10-13 20:22:49,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:22:49,637 INFO L225 Difference]: With dead ends: 2024 [2019-10-13 20:22:49,637 INFO L226 Difference]: Without dead ends: 1045 [2019-10-13 20:22:49,640 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 411 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:22:49,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2019-10-13 20:22:49,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1009. [2019-10-13 20:22:49,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2019-10-13 20:22:49,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1292 transitions. [2019-10-13 20:22:49,718 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1292 transitions. Word has length 207 [2019-10-13 20:22:49,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:22:49,723 INFO L462 AbstractCegarLoop]: Abstraction has 1009 states and 1292 transitions. [2019-10-13 20:22:49,723 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:22:49,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1292 transitions. [2019-10-13 20:22:49,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-10-13 20:22:49,727 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:22:49,727 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:22:49,928 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 20:22:49,928 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:22:49,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:22:49,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1966685246, now seen corresponding path program 1 times [2019-10-13 20:22:49,929 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:22:49,929 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183754343] [2019-10-13 20:22:49,929 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:49,929 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:49,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:22:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:22:50,379 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 20:22:50,379 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183754343] [2019-10-13 20:22:50,380 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:22:50,380 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 20:22:50,380 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81972447] [2019-10-13 20:22:50,382 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 20:22:50,382 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:22:50,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 20:22:50,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 20:22:50,383 INFO L87 Difference]: Start difference. First operand 1009 states and 1292 transitions. Second operand 9 states. [2019-10-13 20:22:53,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:22:53,025 INFO L93 Difference]: Finished difference Result 2014 states and 2585 transitions. [2019-10-13 20:22:53,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 20:22:53,026 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 206 [2019-10-13 20:22:53,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:22:53,034 INFO L225 Difference]: With dead ends: 2014 [2019-10-13 20:22:53,034 INFO L226 Difference]: Without dead ends: 1027 [2019-10-13 20:22:53,038 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-13 20:22:53,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2019-10-13 20:22:53,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1009. [2019-10-13 20:22:53,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2019-10-13 20:22:53,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1291 transitions. [2019-10-13 20:22:53,084 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1291 transitions. Word has length 206 [2019-10-13 20:22:53,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:22:53,084 INFO L462 AbstractCegarLoop]: Abstraction has 1009 states and 1291 transitions. [2019-10-13 20:22:53,084 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 20:22:53,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1291 transitions. [2019-10-13 20:22:53,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-10-13 20:22:53,088 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:22:53,088 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:22:53,089 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:22:53,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:22:53,089 INFO L82 PathProgramCache]: Analyzing trace with hash 176798915, now seen corresponding path program 1 times [2019-10-13 20:22:53,089 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:22:53,090 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277371892] [2019-10-13 20:22:53,090 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:53,090 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:53,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:22:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:22:53,449 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 20:22:53,449 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277371892] [2019-10-13 20:22:53,450 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:22:53,450 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 20:22:53,450 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984254616] [2019-10-13 20:22:53,450 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 20:22:53,451 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:22:53,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 20:22:53,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 20:22:53,451 INFO L87 Difference]: Start difference. First operand 1009 states and 1291 transitions. Second operand 6 states. [2019-10-13 20:22:55,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:22:55,975 INFO L93 Difference]: Finished difference Result 2035 states and 2605 transitions. [2019-10-13 20:22:55,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 20:22:55,976 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 206 [2019-10-13 20:22:55,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:22:55,982 INFO L225 Difference]: With dead ends: 2035 [2019-10-13 20:22:55,982 INFO L226 Difference]: Without dead ends: 1001 [2019-10-13 20:22:55,985 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 20:22:55,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2019-10-13 20:22:56,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 984. [2019-10-13 20:22:56,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 984 states. [2019-10-13 20:22:56,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1249 transitions. [2019-10-13 20:22:56,025 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1249 transitions. Word has length 206 [2019-10-13 20:22:56,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:22:56,026 INFO L462 AbstractCegarLoop]: Abstraction has 984 states and 1249 transitions. [2019-10-13 20:22:56,026 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 20:22:56,026 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1249 transitions. [2019-10-13 20:22:56,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2019-10-13 20:22:56,029 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:22:56,029 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:22:56,030 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:22:56,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:22:56,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1292493545, now seen corresponding path program 1 times [2019-10-13 20:22:56,030 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:22:56,030 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184308217] [2019-10-13 20:22:56,031 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:56,031 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:22:56,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:22:56,127 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 20:22:56,128 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829414744] [2019-10-13 20:22:56,128 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 [2019-10-13 20:22:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:22:58,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 4210 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 20:22:58,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 20:22:58,191 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-10-13 20:22:58,191 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 20:22:58,200 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 20:22:58,200 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 20:22:58,200 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2019-10-13 20:22:58,292 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-10-13 20:22:58,292 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 20:22:58,295 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 20:22:58,295 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 20:22:58,296 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2019-10-13 20:22:58,365 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-10-13 20:22:58,366 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 20:22:58,593 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-10-13 20:22:58,593 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184308217] [2019-10-13 20:22:58,594 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 20:22:58,594 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829414744] [2019-10-13 20:22:58,594 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:22:58,594 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2019-10-13 20:22:58,595 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014642250] [2019-10-13 20:22:58,595 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 20:22:58,596 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:22:58,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 20:22:58,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 20:22:58,596 INFO L87 Difference]: Start difference. First operand 984 states and 1249 transitions. Second operand 5 states.