/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --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-fb55353 [2019-11-06 23:17:21,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 23:17:21,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 23:17:21,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 23:17:21,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 23:17:21,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 23:17:21,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 23:17:21,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 23:17:21,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 23:17:21,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 23:17:21,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 23:17:21,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 23:17:21,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 23:17:21,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 23:17:21,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 23:17:21,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 23:17:21,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 23:17:21,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 23:17:21,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 23:17:21,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 23:17:21,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 23:17:21,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 23:17:21,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 23:17:21,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 23:17:21,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 23:17:21,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 23:17:21,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 23:17:21,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 23:17:21,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 23:17:21,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 23:17:21,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 23:17:21,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 23:17:21,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 23:17:21,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 23:17:21,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 23:17:21,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 23:17:21,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 23:17:21,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 23:17:21,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 23:17:21,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 23:17:21,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 23:17:21,133 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 23:17:21,154 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 23:17:21,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 23:17:21,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 23:17:21,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 23:17:21,158 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 23:17:21,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 23:17:21,159 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 23:17:21,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 23:17:21,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 23:17:21,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 23:17:21,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 23:17:21,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 23:17:21,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 23:17:21,162 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 23:17:21,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 23:17:21,162 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 23:17:21,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 23:17:21,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 23:17:21,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 23:17:21,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 23:17:21,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 23:17:21,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 23:17:21,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 23:17:21,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 23:17:21,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 23:17:21,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 23:17:21,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 23:17:21,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 23:17:21,164 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 [2019-11-06 23:17:21,472 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 23:17:21,491 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 23:17:21,494 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 23:17:21,496 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 23:17:21,497 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 23:17:21,498 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i [2019-11-06 23:17:21,572 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c4fc7af2/87805d933d074e9dafe31acef551a733/FLAG68e6cd5d7 [2019-11-06 23:17:22,350 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 23:17:22,351 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i [2019-11-06 23:17:22,390 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c4fc7af2/87805d933d074e9dafe31acef551a733/FLAG68e6cd5d7 [2019-11-06 23:17:22,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c4fc7af2/87805d933d074e9dafe31acef551a733 [2019-11-06 23:17:22,447 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 23:17:22,455 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 23:17:22,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 23:17:22,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 23:17:22,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 23:17:22,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:17:22" (1/1) ... [2019-11-06 23:17:22,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e3d560d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:17:22, skipping insertion in model container [2019-11-06 23:17:22,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:17:22" (1/1) ... [2019-11-06 23:17:22,510 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 23:17:22,668 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 23:17:24,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 23:17:24,146 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 23:17:24,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 23:17:24,659 INFO L192 MainTranslator]: Completed translation [2019-11-06 23:17:24,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:17:24 WrapperNode [2019-11-06 23:17:24,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 23:17:24,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 23:17:24,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 23:17:24,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 23:17:24,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:17:24" (1/1) ... [2019-11-06 23:17:24,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:17:24" (1/1) ... [2019-11-06 23:17:24,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:17:24" (1/1) ... [2019-11-06 23:17:24,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:17:24" (1/1) ... [2019-11-06 23:17:24,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:17:24" (1/1) ... [2019-11-06 23:17:24,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:17:24" (1/1) ... [2019-11-06 23:17:25,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:17:24" (1/1) ... [2019-11-06 23:17:25,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 23:17:25,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 23:17:25,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 23:17:25,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 23:17:25,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:17:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 23:17:25,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 23:17:25,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 23:17:25,123 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2019-11-06 23:17:25,123 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2019-11-06 23:17:25,123 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2019-11-06 23:17:25,124 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2019-11-06 23:17:25,124 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-11-06 23:17:25,125 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2019-11-06 23:17:25,125 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2019-11-06 23:17:25,126 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-11-06 23:17:25,126 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-11-06 23:17:25,126 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2019-11-06 23:17:25,126 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2019-11-06 23:17:25,127 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2019-11-06 23:17:25,127 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2019-11-06 23:17:25,127 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2019-11-06 23:17:25,130 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2019-11-06 23:17:25,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2019-11-06 23:17:25,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_int_must_check_helper [2019-11-06 23:17:25,131 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_buffer_init [2019-11-06 23:17:25,131 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_buffer_free [2019-11-06 23:17:25,131 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_buffer_write [2019-11-06 23:17:25,131 INFO L138 BoogieDeclarations]: Found implementation of procedure free_imon_context [2019-11-06 23:17:25,131 INFO L138 BoogieDeclarations]: Found implementation of procedure deregister_from_lirc [2019-11-06 23:17:25,132 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2019-11-06 23:17:25,132 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2019-11-06 23:17:25,132 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2019-11-06 23:17:25,132 INFO L138 BoogieDeclarations]: Found implementation of procedure vfd_write [2019-11-06 23:17:25,132 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_tx_callback [2019-11-06 23:17:25,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_open [2019-11-06 23:17:25,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_close [2019-11-06 23:17:25,133 INFO L138 BoogieDeclarations]: Found implementation of procedure submit_data [2019-11-06 23:17:25,133 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_incoming_packet [2019-11-06 23:17:25,133 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_rx_callback [2019-11-06 23:17:25,133 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_probe [2019-11-06 23:17:25,134 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2019-11-06 23:17:25,134 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_suspend [2019-11-06 23:17:25,134 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_resume [2019-11-06 23:17:25,134 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_init [2019-11-06 23:17:25,135 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_exit [2019-11-06 23:17:25,135 INFO L138 BoogieDeclarations]: Found implementation of procedure init_module [2019-11-06 23:17:25,135 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup_module [2019-11-06 23:17:25,135 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 23:17:25,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2019-11-06 23:17:25,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2019-11-06 23:17:25,136 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2019-11-06 23:17:25,136 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2019-11-06 23:17:25,136 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2019-11-06 23:17:25,136 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2019-11-06 23:17:25,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-06 23:17:25,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2019-11-06 23:17:25,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_alloc [2019-11-06 23:17:25,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_free [2019-11-06 23:17:25,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_in [2019-11-06 23:17:25,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_in_r [2019-11-06 23:17:25,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-11-06 23:17:25,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2019-11-06 23:17:25,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-11-06 23:17:25,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2019-11-06 23:17:25,138 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2019-11-06 23:17:25,138 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2019-11-06 23:17:25,138 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2019-11-06 23:17:25,139 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2019-11-06 23:17:25,139 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_all [2019-11-06 23:17:25,139 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2019-11-06 23:17:25,139 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2019-11-06 23:17:25,139 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2019-11-06 23:17:25,140 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2019-11-06 23:17:25,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2019-11-06 23:17:25,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-06 23:17:25,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2019-11-06 23:17:25,140 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_register_driver [2019-11-06 23:17:25,140 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_unregister_driver [2019-11-06 23:17:25,141 INFO L138 BoogieDeclarations]: Found implementation of procedure memdup_user [2019-11-06 23:17:25,142 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2019-11-06 23:17:25,142 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-11-06 23:17:25,142 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-11-06 23:17:25,142 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-11-06 23:17:25,142 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2019-11-06 23:17:25,144 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_find_interface [2019-11-06 23:17:25,144 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2019-11-06 23:17:25,144 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2019-11-06 23:17:25,145 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_match_id [2019-11-06 23:17:25,145 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2019-11-06 23:17:25,146 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-11-06 23:17:25,146 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2019-11-06 23:17:25,148 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_interruptible [2019-11-06 23:17:25,148 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_fmt [2019-11-06 23:17:25,148 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-06 23:17:25,148 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-06 23:17:25,148 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-06 23:17:25,149 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2019-11-06 23:17:25,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 23:17:25,149 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-11-06 23:17:25,149 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_fmt [2019-11-06 23:17:25,149 INFO L130 BoogieDeclarations]: Found specification of procedure memdup_user [2019-11-06 23:17:25,149 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-06 23:17:25,150 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2019-11-06 23:17:25,150 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2019-11-06 23:17:25,150 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2019-11-06 23:17:25,150 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2019-11-06 23:17:25,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 23:17:25,150 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2019-11-06 23:17:25,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 23:17:25,151 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-11-06 23:17:25,151 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2019-11-06 23:17:25,151 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2019-11-06 23:17:25,151 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-11-06 23:17:25,152 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2019-11-06 23:17:25,152 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2019-11-06 23:17:25,152 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2019-11-06 23:17:25,152 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2019-11-06 23:17:25,152 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2019-11-06 23:17:25,152 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-11-06 23:17:25,152 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2019-11-06 23:17:25,153 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_interruptible [2019-11-06 23:17:25,154 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2019-11-06 23:17:25,154 INFO L130 BoogieDeclarations]: Found specification of procedure complete_all [2019-11-06 23:17:25,154 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-06 23:17:25,154 INFO L130 BoogieDeclarations]: Found specification of procedure init_module [2019-11-06 23:17:25,155 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup_module [2019-11-06 23:17:25,156 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-11-06 23:17:25,156 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-11-06 23:17:25,156 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-11-06 23:17:25,158 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2019-11-06 23:17:25,158 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2019-11-06 23:17:25,158 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2019-11-06 23:17:25,158 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2019-11-06 23:17:25,159 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2019-11-06 23:17:25,159 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2019-11-06 23:17:25,159 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2019-11-06 23:17:25,160 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2019-11-06 23:17:25,160 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2019-11-06 23:17:25,161 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2019-11-06 23:17:25,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 23:17:25,162 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2019-11-06 23:17:25,163 INFO L130 BoogieDeclarations]: Found specification of procedure usb_match_id [2019-11-06 23:17:25,166 INFO L130 BoogieDeclarations]: Found specification of procedure usb_find_interface [2019-11-06 23:17:25,166 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-11-06 23:17:25,166 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2019-11-06 23:17:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 23:17:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-11-06 23:17:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2019-11-06 23:17:25,168 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2019-11-06 23:17:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2019-11-06 23:17:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 23:17:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2019-11-06 23:17:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2019-11-06 23:17:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2019-11-06 23:17:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2019-11-06 23:17:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2019-11-06 23:17:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2019-11-06 23:17:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2019-11-06 23:17:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_int_must_check_helper [2019-11-06 23:17:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_alloc [2019-11-06 23:17:25,175 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_free [2019-11-06 23:17:25,175 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_in [2019-11-06 23:17:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_in_r [2019-11-06 23:17:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_buffer_init [2019-11-06 23:17:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_buffer_free [2019-11-06 23:17:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_buffer_write [2019-11-06 23:17:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_register_driver [2019-11-06 23:17:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_unregister_driver [2019-11-06 23:17:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure imon_probe [2019-11-06 23:17:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2019-11-06 23:17:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure usb_rx_callback [2019-11-06 23:17:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure usb_tx_callback [2019-11-06 23:17:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure imon_resume [2019-11-06 23:17:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure imon_suspend [2019-11-06 23:17:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2019-11-06 23:17:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2019-11-06 23:17:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure vfd_write [2019-11-06 23:17:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure ir_open [2019-11-06 23:17:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure ir_close [2019-11-06 23:17:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure imon_init [2019-11-06 23:17:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure imon_exit [2019-11-06 23:17:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure free_imon_context [2019-11-06 23:17:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure deregister_from_lirc [2019-11-06 23:17:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2019-11-06 23:17:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-06 23:17:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 23:17:25,179 INFO L130 BoogieDeclarations]: Found specification of procedure submit_data [2019-11-06 23:17:25,179 INFO L130 BoogieDeclarations]: Found specification of procedure imon_incoming_packet [2019-11-06 23:17:25,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2019-11-06 23:17:25,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-06 23:17:25,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2019-11-06 23:17:25,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-06 23:17:25,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 23:17:25,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 23:17:25,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2019-11-06 23:17:25,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2019-11-06 23:17:25,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2019-11-06 23:17:25,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-11-06 23:17:25,180 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-06 23:17:25,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-06 23:17:25,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-06 23:17:25,180 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 23:17:25,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 23:17:25,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 23:17:25,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-06 23:17:25,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 23:17:25,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-06 23:17:25,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-11-06 23:17:25,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-06 23:17:25,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-06 23:17:26,969 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2019-11-06 23:17:33,715 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-06 23:17:33,741 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2019-11-06 23:17:33,742 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2019-11-06 23:17:33,926 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-06 23:17:33,963 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume !false; [2019-11-06 23:17:33,963 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume false; [2019-11-06 23:17:34,275 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 23:17:34,275 INFO L284 CfgBuilder]: Removed 40 assume(true) statements. [2019-11-06 23:17:34,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:17:34 BoogieIcfgContainer [2019-11-06 23:17:34,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 23:17:34,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 23:17:34,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 23:17:34,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 23:17:34,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:17:22" (1/3) ... [2019-11-06 23:17:34,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5acefda7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:17:34, skipping insertion in model container [2019-11-06 23:17:34,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:17:24" (2/3) ... [2019-11-06 23:17:34,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5acefda7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:17:34, skipping insertion in model container [2019-11-06 23:17:34,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:17:34" (3/3) ... [2019-11-06 23:17:34,285 INFO L109 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i [2019-11-06 23:17:34,296 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 23:17:34,305 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 23:17:34,318 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 23:17:34,347 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 23:17:34,348 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 23:17:34,348 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 23:17:34,348 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 23:17:34,348 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 23:17:34,348 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 23:17:34,348 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 23:17:34,349 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 23:17:34,381 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states. [2019-11-06 23:17:34,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-06 23:17:34,387 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:17:34,389 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 23:17:34,390 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:17:34,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:17:34,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1136421439, now seen corresponding path program 1 times [2019-11-06 23:17:34,407 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:17:34,408 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025170697] [2019-11-06 23:17:34,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:17:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:17:35,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 23:17:35,283 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025170697] [2019-11-06 23:17:35,283 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:17:35,284 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:17:35,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308865609] [2019-11-06 23:17:35,290 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:17:35,292 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:17:35,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:17:35,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:17:35,310 INFO L87 Difference]: Start difference. First operand 690 states. Second operand 3 states. [2019-11-06 23:17:35,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:17:35,526 INFO L93 Difference]: Finished difference Result 1239 states and 1738 transitions. [2019-11-06 23:17:35,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:17:35,529 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2019-11-06 23:17:35,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:17:35,568 INFO L225 Difference]: With dead ends: 1239 [2019-11-06 23:17:35,569 INFO L226 Difference]: Without dead ends: 818 [2019-11-06 23:17:35,587 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:17:35,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2019-11-06 23:17:35,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 815. [2019-11-06 23:17:35,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2019-11-06 23:17:35,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1025 transitions. [2019-11-06 23:17:35,795 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1025 transitions. Word has length 30 [2019-11-06 23:17:35,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:17:35,796 INFO L462 AbstractCegarLoop]: Abstraction has 815 states and 1025 transitions. [2019-11-06 23:17:35,796 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:17:35,796 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1025 transitions. [2019-11-06 23:17:35,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-06 23:17:35,798 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:17:35,798 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 23:17:35,799 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:17:35,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:17:35,799 INFO L82 PathProgramCache]: Analyzing trace with hash -869666700, now seen corresponding path program 1 times [2019-11-06 23:17:35,799 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:17:35,800 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438413161] [2019-11-06 23:17:35,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:17:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:17:36,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 23:17:36,125 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438413161] [2019-11-06 23:17:36,126 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:17:36,126 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:17:36,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852918167] [2019-11-06 23:17:36,128 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:17:36,129 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:17:36,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:17:36,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:17:36,130 INFO L87 Difference]: Start difference. First operand 815 states and 1025 transitions. Second operand 3 states. [2019-11-06 23:17:36,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:17:36,174 INFO L93 Difference]: Finished difference Result 817 states and 1026 transitions. [2019-11-06 23:17:36,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:17:36,174 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2019-11-06 23:17:36,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:17:36,181 INFO L225 Difference]: With dead ends: 817 [2019-11-06 23:17:36,181 INFO L226 Difference]: Without dead ends: 803 [2019-11-06 23:17:36,183 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:17:36,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2019-11-06 23:17:36,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2019-11-06 23:17:36,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2019-11-06 23:17:36,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1009 transitions. [2019-11-06 23:17:36,239 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1009 transitions. Word has length 31 [2019-11-06 23:17:36,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:17:36,240 INFO L462 AbstractCegarLoop]: Abstraction has 803 states and 1009 transitions. [2019-11-06 23:17:36,240 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:17:36,240 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1009 transitions. [2019-11-06 23:17:36,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-11-06 23:17:36,248 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:17:36,248 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 23:17:36,249 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:17:36,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:17:36,249 INFO L82 PathProgramCache]: Analyzing trace with hash -329654060, now seen corresponding path program 1 times [2019-11-06 23:17:36,249 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:17:36,249 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318508721] [2019-11-06 23:17:36,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:17:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:17:36,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 23:17:36,651 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318508721] [2019-11-06 23:17:36,651 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:17:36,652 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:17:36,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227479044] [2019-11-06 23:17:36,653 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:17:36,653 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:17:36,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:17:36,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:17:36,654 INFO L87 Difference]: Start difference. First operand 803 states and 1009 transitions. Second operand 3 states. [2019-11-06 23:17:36,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:17:36,786 INFO L93 Difference]: Finished difference Result 1604 states and 2036 transitions. [2019-11-06 23:17:36,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:17:36,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2019-11-06 23:17:36,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:17:36,797 INFO L225 Difference]: With dead ends: 1604 [2019-11-06 23:17:36,797 INFO L226 Difference]: Without dead ends: 827 [2019-11-06 23:17:36,802 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:17:36,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2019-11-06 23:17:36,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 817. [2019-11-06 23:17:36,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 817 states. [2019-11-06 23:17:36,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1023 transitions. [2019-11-06 23:17:36,868 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1023 transitions. Word has length 64 [2019-11-06 23:17:36,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:17:36,869 INFO L462 AbstractCegarLoop]: Abstraction has 817 states and 1023 transitions. [2019-11-06 23:17:36,869 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:17:36,869 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1023 transitions. [2019-11-06 23:17:36,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-11-06 23:17:36,880 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:17:36,881 INFO L410 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] [2019-11-06 23:17:36,881 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:17:36,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:17:36,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1451896951, now seen corresponding path program 1 times [2019-11-06 23:17:36,882 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:17:36,882 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850846615] [2019-11-06 23:17:36,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:17:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:17:37,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 23:17:37,189 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850846615] [2019-11-06 23:17:37,189 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:17:37,189 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 23:17:37,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565722028] [2019-11-06 23:17:37,190 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 23:17:37,190 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:17:37,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 23:17:37,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 23:17:37,191 INFO L87 Difference]: Start difference. First operand 817 states and 1023 transitions. Second operand 5 states. [2019-11-06 23:17:37,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:17:37,354 INFO L93 Difference]: Finished difference Result 1682 states and 2138 transitions. [2019-11-06 23:17:37,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 23:17:37,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2019-11-06 23:17:37,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:17:37,362 INFO L225 Difference]: With dead ends: 1682 [2019-11-06 23:17:37,362 INFO L226 Difference]: Without dead ends: 889 [2019-11-06 23:17:37,366 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 23:17:37,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2019-11-06 23:17:37,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 868. [2019-11-06 23:17:37,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 868 states. [2019-11-06 23:17:37,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1100 transitions. [2019-11-06 23:17:37,415 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1100 transitions. Word has length 111 [2019-11-06 23:17:37,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:17:37,417 INFO L462 AbstractCegarLoop]: Abstraction has 868 states and 1100 transitions. [2019-11-06 23:17:37,417 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 23:17:37,417 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1100 transitions. [2019-11-06 23:17:37,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-11-06 23:17:37,420 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:17:37,420 INFO L410 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] [2019-11-06 23:17:37,422 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:17:37,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:17:37,424 INFO L82 PathProgramCache]: Analyzing trace with hash -860033774, now seen corresponding path program 1 times [2019-11-06 23:17:37,424 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:17:37,424 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875956407] [2019-11-06 23:17:37,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:17:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:17:37,872 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-06 23:17:37,873 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875956407] [2019-11-06 23:17:37,873 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:17:37,873 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:17:37,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482769699] [2019-11-06 23:17:37,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:17:37,874 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:17:37,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:17:37,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:17:37,875 INFO L87 Difference]: Start difference. First operand 868 states and 1100 transitions. Second operand 3 states. [2019-11-06 23:17:37,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:17:37,973 INFO L93 Difference]: Finished difference Result 1736 states and 2220 transitions. [2019-11-06 23:17:37,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:17:37,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2019-11-06 23:17:37,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:17:37,981 INFO L225 Difference]: With dead ends: 1736 [2019-11-06 23:17:37,982 INFO L226 Difference]: Without dead ends: 894 [2019-11-06 23:17:37,985 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:17:37,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2019-11-06 23:17:38,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 880. [2019-11-06 23:17:38,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2019-11-06 23:17:38,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1112 transitions. [2019-11-06 23:17:38,035 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1112 transitions. Word has length 104 [2019-11-06 23:17:38,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:17:38,038 INFO L462 AbstractCegarLoop]: Abstraction has 880 states and 1112 transitions. [2019-11-06 23:17:38,038 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:17:38,038 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1112 transitions. [2019-11-06 23:17:38,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-11-06 23:17:38,043 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:17:38,043 INFO L410 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] [2019-11-06 23:17:38,043 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:17:38,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:17:38,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1406187874, now seen corresponding path program 1 times [2019-11-06 23:17:38,044 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:17:38,044 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722583917] [2019-11-06 23:17:38,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:17:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:17:38,351 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-11-06 23:17:38,352 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722583917] [2019-11-06 23:17:38,352 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:17:38,352 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:17:38,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578876322] [2019-11-06 23:17:38,353 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:17:38,353 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:17:38,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:17:38,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:17:38,354 INFO L87 Difference]: Start difference. First operand 880 states and 1112 transitions. Second operand 3 states. [2019-11-06 23:17:38,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:17:38,411 INFO L93 Difference]: Finished difference Result 1800 states and 2292 transitions. [2019-11-06 23:17:38,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:17:38,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2019-11-06 23:17:38,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:17:38,418 INFO L225 Difference]: With dead ends: 1800 [2019-11-06 23:17:38,419 INFO L226 Difference]: Without dead ends: 946 [2019-11-06 23:17:38,422 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:17:38,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2019-11-06 23:17:38,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 933. [2019-11-06 23:17:38,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2019-11-06 23:17:38,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1182 transitions. [2019-11-06 23:17:38,468 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1182 transitions. Word has length 142 [2019-11-06 23:17:38,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:17:38,469 INFO L462 AbstractCegarLoop]: Abstraction has 933 states and 1182 transitions. [2019-11-06 23:17:38,469 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:17:38,469 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1182 transitions. [2019-11-06 23:17:38,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-11-06 23:17:38,472 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:17:38,472 INFO L410 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] [2019-11-06 23:17:38,473 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:17:38,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:17:38,473 INFO L82 PathProgramCache]: Analyzing trace with hash 199957720, now seen corresponding path program 1 times [2019-11-06 23:17:38,473 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:17:38,474 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517274534] [2019-11-06 23:17:38,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:17:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:17:38,773 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-11-06 23:17:38,774 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517274534] [2019-11-06 23:17:38,774 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:17:38,774 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:17:38,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877031322] [2019-11-06 23:17:38,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:17:38,775 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:17:38,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:17:38,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:17:38,776 INFO L87 Difference]: Start difference. First operand 933 states and 1182 transitions. Second operand 3 states. [2019-11-06 23:17:38,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:17:38,921 INFO L93 Difference]: Finished difference Result 1866 states and 2384 transitions. [2019-11-06 23:17:38,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:17:38,922 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2019-11-06 23:17:38,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:17:38,928 INFO L225 Difference]: With dead ends: 1866 [2019-11-06 23:17:38,928 INFO L226 Difference]: Without dead ends: 959 [2019-11-06 23:17:38,931 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:17:38,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2019-11-06 23:17:38,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 943. [2019-11-06 23:17:38,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2019-11-06 23:17:38,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1192 transitions. [2019-11-06 23:17:38,971 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1192 transitions. Word has length 154 [2019-11-06 23:17:38,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:17:38,972 INFO L462 AbstractCegarLoop]: Abstraction has 943 states and 1192 transitions. [2019-11-06 23:17:38,972 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:17:38,972 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1192 transitions. [2019-11-06 23:17:38,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-11-06 23:17:38,975 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:17:38,975 INFO L410 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] [2019-11-06 23:17:38,976 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:17:38,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:17:38,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1713023539, now seen corresponding path program 1 times [2019-11-06 23:17:38,976 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:17:38,976 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428476011] [2019-11-06 23:17:38,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:17:39,081 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 23:17:39,081 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1771898814] [2019-11-06 23:17:39,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 23:17:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:17:40,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 4078 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-06 23:17:40,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 23:17:40,547 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-11-06 23:17:40,548 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 23:17:40,765 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-11-06 23:17:40,766 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428476011] [2019-11-06 23:17:40,766 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 23:17:40,767 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771898814] [2019-11-06 23:17:40,767 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:17:40,767 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-06 23:17:40,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092250479] [2019-11-06 23:17:40,768 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 23:17:40,769 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:17:40,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 23:17:40,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 23:17:40,769 INFO L87 Difference]: Start difference. First operand 943 states and 1192 transitions. Second operand 4 states. [2019-11-06 23:17:41,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:17:41,019 INFO L93 Difference]: Finished difference Result 1940 states and 2502 transitions. [2019-11-06 23:17:41,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 23:17:41,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 189 [2019-11-06 23:17:41,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:17:41,026 INFO L225 Difference]: With dead ends: 1940 [2019-11-06 23:17:41,027 INFO L226 Difference]: Without dead ends: 1023 [2019-11-06 23:17:41,030 INFO L630 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 [2019-11-06 23:17:41,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2019-11-06 23:17:41,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 953. [2019-11-06 23:17:41,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2019-11-06 23:17:41,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1204 transitions. [2019-11-06 23:17:41,076 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1204 transitions. Word has length 189 [2019-11-06 23:17:41,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:17:41,076 INFO L462 AbstractCegarLoop]: Abstraction has 953 states and 1204 transitions. [2019-11-06 23:17:41,076 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 23:17:41,077 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1204 transitions. [2019-11-06 23:17:41,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-11-06 23:17:41,080 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:17:41,080 INFO L410 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] [2019-11-06 23:17:41,296 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 23:17:41,296 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:17:41,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:17:41,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1867378716, now seen corresponding path program 1 times [2019-11-06 23:17:41,297 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:17:41,297 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645650286] [2019-11-06 23:17:41,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:17:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:17:42,056 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-06 23:17:42,059 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645650286] [2019-11-06 23:17:42,059 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:17:42,059 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 23:17:42,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807257037] [2019-11-06 23:17:42,060 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 23:17:42,062 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:17:42,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 23:17:42,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 23:17:42,065 INFO L87 Difference]: Start difference. First operand 953 states and 1204 transitions. Second operand 4 states. [2019-11-06 23:17:42,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:17:42,228 INFO L93 Difference]: Finished difference Result 1984 states and 2557 transitions. [2019-11-06 23:17:42,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 23:17:42,229 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 193 [2019-11-06 23:17:42,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:17:42,243 INFO L225 Difference]: With dead ends: 1984 [2019-11-06 23:17:42,243 INFO L226 Difference]: Without dead ends: 1057 [2019-11-06 23:17:42,248 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 23:17:42,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2019-11-06 23:17:42,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1005. [2019-11-06 23:17:42,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2019-11-06 23:17:42,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1288 transitions. [2019-11-06 23:17:42,332 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1288 transitions. Word has length 193 [2019-11-06 23:17:42,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:17:42,333 INFO L462 AbstractCegarLoop]: Abstraction has 1005 states and 1288 transitions. [2019-11-06 23:17:42,333 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 23:17:42,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1288 transitions. [2019-11-06 23:17:42,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-11-06 23:17:42,340 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:17:42,340 INFO L410 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] [2019-11-06 23:17:42,341 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:17:42,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:17:42,342 INFO L82 PathProgramCache]: Analyzing trace with hash -510780855, now seen corresponding path program 1 times [2019-11-06 23:17:42,342 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:17:42,342 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469524271] [2019-11-06 23:17:42,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:17:42,496 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 23:17:42,501 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484974512] [2019-11-06 23:17:42,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 23:17:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:17:43,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 4146 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-06 23:17:43,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 23:17:43,977 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-11-06 23:17:43,977 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 23:17:44,145 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-11-06 23:17:44,146 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469524271] [2019-11-06 23:17:44,146 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 23:17:44,146 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484974512] [2019-11-06 23:17:44,146 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:17:44,147 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-06 23:17:44,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140960332] [2019-11-06 23:17:44,147 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:17:44,148 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:17:44,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:17:44,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:17:44,148 INFO L87 Difference]: Start difference. First operand 1005 states and 1288 transitions. Second operand 3 states. [2019-11-06 23:17:44,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:17:44,256 INFO L93 Difference]: Finished difference Result 2024 states and 2621 transitions. [2019-11-06 23:17:44,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:17:44,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2019-11-06 23:17:44,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:17:44,268 INFO L225 Difference]: With dead ends: 2024 [2019-11-06 23:17:44,268 INFO L226 Difference]: Without dead ends: 1045 [2019-11-06 23:17:44,272 INFO L630 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 [2019-11-06 23:17:44,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2019-11-06 23:17:44,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1009. [2019-11-06 23:17:44,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2019-11-06 23:17:44,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1292 transitions. [2019-11-06 23:17:44,329 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1292 transitions. Word has length 207 [2019-11-06 23:17:44,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:17:44,329 INFO L462 AbstractCegarLoop]: Abstraction has 1009 states and 1292 transitions. [2019-11-06 23:17:44,330 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:17:44,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1292 transitions. [2019-11-06 23:17:44,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-11-06 23:17:44,333 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:17:44,334 INFO L410 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] [2019-11-06 23:17:44,548 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 23:17:44,548 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:17:44,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:17:44,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1966685246, now seen corresponding path program 1 times [2019-11-06 23:17:44,549 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:17:44,549 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581030181] [2019-11-06 23:17:44,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:17:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:17:44,909 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-11-06 23:17:44,909 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581030181] [2019-11-06 23:17:44,909 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:17:44,909 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 23:17:44,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534511397] [2019-11-06 23:17:44,910 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 23:17:44,910 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:17:44,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 23:17:44,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-06 23:17:44,911 INFO L87 Difference]: Start difference. First operand 1009 states and 1292 transitions. Second operand 9 states. [2019-11-06 23:17:47,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:17:47,707 INFO L93 Difference]: Finished difference Result 2014 states and 2585 transitions. [2019-11-06 23:17:47,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 23:17:47,707 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 206 [2019-11-06 23:17:47,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:17:47,714 INFO L225 Difference]: With dead ends: 2014 [2019-11-06 23:17:47,714 INFO L226 Difference]: Without dead ends: 1027 [2019-11-06 23:17:47,717 INFO L630 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 [2019-11-06 23:17:47,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2019-11-06 23:17:47,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1009. [2019-11-06 23:17:47,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2019-11-06 23:17:47,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1291 transitions. [2019-11-06 23:17:47,757 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1291 transitions. Word has length 206 [2019-11-06 23:17:47,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:17:47,758 INFO L462 AbstractCegarLoop]: Abstraction has 1009 states and 1291 transitions. [2019-11-06 23:17:47,758 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 23:17:47,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1291 transitions. [2019-11-06 23:17:47,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-11-06 23:17:47,762 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:17:47,762 INFO L410 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] [2019-11-06 23:17:47,762 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:17:47,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:17:47,763 INFO L82 PathProgramCache]: Analyzing trace with hash 176798915, now seen corresponding path program 1 times [2019-11-06 23:17:47,763 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:17:47,763 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805294311] [2019-11-06 23:17:47,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:17:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:17:48,090 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-06 23:17:48,091 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805294311] [2019-11-06 23:17:48,091 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:17:48,092 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 23:17:48,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217681769] [2019-11-06 23:17:48,092 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 23:17:48,092 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:17:48,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 23:17:48,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-06 23:17:48,093 INFO L87 Difference]: Start difference. First operand 1009 states and 1291 transitions. Second operand 6 states. [2019-11-06 23:17:50,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:17:50,812 INFO L93 Difference]: Finished difference Result 2035 states and 2605 transitions. [2019-11-06 23:17:50,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 23:17:50,813 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 206 [2019-11-06 23:17:50,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:17:50,819 INFO L225 Difference]: With dead ends: 2035 [2019-11-06 23:17:50,819 INFO L226 Difference]: Without dead ends: 1001 [2019-11-06 23:17:50,823 INFO L630 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 [2019-11-06 23:17:50,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2019-11-06 23:17:50,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 984. [2019-11-06 23:17:50,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 984 states. [2019-11-06 23:17:50,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1249 transitions. [2019-11-06 23:17:50,872 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1249 transitions. Word has length 206 [2019-11-06 23:17:50,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:17:50,872 INFO L462 AbstractCegarLoop]: Abstraction has 984 states and 1249 transitions. [2019-11-06 23:17:50,873 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 23:17:50,873 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1249 transitions. [2019-11-06 23:17:50,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2019-11-06 23:17:50,879 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:17:50,879 INFO L410 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] [2019-11-06 23:17:50,880 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:17:50,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:17:50,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1292493545, now seen corresponding path program 1 times [2019-11-06 23:17:50,880 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:17:50,881 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179970414] [2019-11-06 23:17:50,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:17:51,128 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 23:17:51,129 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [807504225] [2019-11-06 23:17:51,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 23:17:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:17:52,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 4210 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 23:17:52,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 23:17:52,576 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 [2019-11-06 23:17:52,576 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 23:17:52,580 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 23:17:52,581 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 23:17:52,581 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2019-11-06 23:17:52,661 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 [2019-11-06 23:17:52,661 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 23:17:52,663 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 23:17:52,664 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 23:17:52,664 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2019-11-06 23:17:52,724 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-11-06 23:17:52,724 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 23:17:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-11-06 23:17:52,915 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179970414] [2019-11-06 23:17:52,915 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 23:17:52,915 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807504225] [2019-11-06 23:17:52,915 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:17:52,916 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2019-11-06 23:17:52,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277822225] [2019-11-06 23:17:52,917 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 23:17:52,917 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:17:52,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 23:17:52,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 23:17:52,918 INFO L87 Difference]: Start difference. First operand 984 states and 1249 transitions. Second operand 5 states.