java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 22:19:04,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:19:04,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:19:04,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:19:04,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:19:04,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:19:04,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:19:04,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:19:04,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:19:04,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:19:04,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:19:04,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:19:04,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:19:04,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:19:04,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:19:04,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:19:04,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:19:04,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:19:04,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:19:04,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:19:04,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:19:04,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:19:04,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:19:04,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:19:04,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:19:04,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:19:04,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:19:04,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:19:04,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:19:04,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:19:04,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:19:04,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:19:04,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:19:04,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:19:04,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:19:04,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:19:04,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:19:04,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:19:04,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:19:04,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:19:04,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:19:04,782 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 22:19:04,801 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:19:04,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:19:04,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:19:04,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:19:04,803 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:19:04,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:19:04,804 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:19:04,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:19:04,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:19:04,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:19:04,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:19:04,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:19:04,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:19:04,805 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:19:04,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:19:04,805 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:19:04,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:19:04,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:19:04,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:19:04,806 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:19:04,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:19:04,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:19:04,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:19:04,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:19:04,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:19:04,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:19:04,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:19:04,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:19:04,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 22:19:05,115 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:19:05,129 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:19:05,133 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:19:05,135 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:19:05,135 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:19:05,136 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2019-10-13 22:19:05,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f64788be1/e9b23f384c9046e18204ea0e774f946b/FLAGc626b8ab2 [2019-10-13 22:19:06,050 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:19:06,051 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2019-10-13 22:19:06,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f64788be1/e9b23f384c9046e18204ea0e774f946b/FLAGc626b8ab2 [2019-10-13 22:19:06,598 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f64788be1/e9b23f384c9046e18204ea0e774f946b [2019-10-13 22:19:06,609 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:19:06,611 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:19:06,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:19:06,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:19:06,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:19:06,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:06" (1/1) ... [2019-10-13 22:19:06,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72c9081e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:06, skipping insertion in model container [2019-10-13 22:19:06,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:06" (1/1) ... [2019-10-13 22:19:06,629 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:19:06,773 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:19:08,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:19:08,769 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:19:09,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:19:09,300 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:19:09,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:09 WrapperNode [2019-10-13 22:19:09,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:19:09,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:19:09,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:19:09,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:19:09,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:09" (1/1) ... [2019-10-13 22:19:09,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:09" (1/1) ... [2019-10-13 22:19:09,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:09" (1/1) ... [2019-10-13 22:19:09,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:09" (1/1) ... [2019-10-13 22:19:09,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:09" (1/1) ... [2019-10-13 22:19:09,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:09" (1/1) ... [2019-10-13 22:19:09,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:09" (1/1) ... [2019-10-13 22:19:09,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:19:09,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:19:09,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:19:09,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:19:09,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:19:09,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:19:09,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:19:09,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-13 22:19:09,600 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2019-10-13 22:19:09,601 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2019-10-13 22:19:09,601 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-10-13 22:19:09,601 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2019-10-13 22:19:09,601 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2019-10-13 22:19:09,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2019-10-13 22:19:09,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab16p [2019-10-13 22:19:09,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2019-10-13 22:19:09,602 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2019-10-13 22:19:09,602 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2019-10-13 22:19:09,602 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2019-10-13 22:19:09,603 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-13 22:19:09,603 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2019-10-13 22:19:09,603 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2019-10-13 22:19:09,603 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2019-10-13 22:19:09,603 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2019-10-13 22:19:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2019-10-13 22:19:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_trylock_bh [2019-10-13 22:19:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2019-10-13 22:19:09,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-13 22:19:09,605 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-13 22:19:09,605 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-13 22:19:09,605 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2019-10-13 22:19:09,605 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-13 22:19:09,605 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2019-10-13 22:19:09,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_head_init [2019-10-13 22:19:09,606 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2019-10-13 22:19:09,606 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2019-10-13 22:19:09,606 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2019-10-13 22:19:09,606 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2019-10-13 22:19:09,606 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2019-10-13 22:19:09,606 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2019-10-13 22:19:09,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 22:19:09,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-13 22:19:09,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-13 22:19:09,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-13 22:19:09,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-13 22:19:09,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 22:19:09,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-13 22:19:09,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-13 22:19:09,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-13 22:19:09,608 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_get_baud_rate [2019-10-13 22:19:09,608 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2019-10-13 22:19:09,608 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2019-10-13 22:19:09,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_print_buffer [2019-10-13 22:19:09,609 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_get [2019-10-13 22:19:09,609 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_put [2019-10-13 22:19:09,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_open [2019-10-13 22:19:09,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_close [2019-10-13 22:19:09,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_hangup [2019-10-13 22:19:09,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_read [2019-10-13 22:19:09,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_write [2019-10-13 22:19:09,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_synctty_ioctl [2019-10-13 22:19:09,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_poll [2019-10-13 22:19:09,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_receive [2019-10-13 22:19:09,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_wakeup [2019-10-13 22:19:09,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_init [2019-10-13 22:19:09,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_ioctl [2019-10-13 22:19:09,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_process [2019-10-13 22:19:09,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_txmunge [2019-10-13 22:19:09,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_send [2019-10-13 22:19:09,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_push [2019-10-13 22:19:09,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_flush_output [2019-10-13 22:19:09,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_input [2019-10-13 22:19:09,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_cleanup [2019-10-13 22:19:09,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_ppp_channel_ops_2 [2019-10-13 22:19:09,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_target_type_1 [2019-10-13 22:19:09,612 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:19:09,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-10-13 22:19:09,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-10-13 22:19:09,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-10-13 22:19:09,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-10-13 22:19:09,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-10-13 22:19:09,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_12 [2019-10-13 22:19:09,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_13 [2019-10-13 22:19:09,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_dequeue_14 [2019-10-13 22:19:09,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_15 [2019-10-13 22:19:09,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_16 [2019-10-13 22:19:09,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_17 [2019-10-13 22:19:09,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_18 [2019-10-13 22:19:09,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_19 [2019-10-13 22:19:09,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_20 [2019-10-13 22:19:09,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-10-13 22:19:09,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-13 22:19:09,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-10-13 22:19:09,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-10-13 22:19:09,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-10-13 22:19:09,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-13 22:19:09,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-13 22:19:09,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-13 22:19:09,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-13 22:19:09,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-10-13 22:19:09,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 22:19:09,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-10-13 22:19:09,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-10-13 22:19:09,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-10-13 22:19:09,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-10-13 22:19:09,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-10-13 22:19:09,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 22:19:09,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user_overflow [2019-10-13 22:19:09,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user_overflow [2019-10-13 22:19:09,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2019-10-13 22:19:09,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-13 22:19:09,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __tasklet_schedule [2019-10-13 22:19:09,618 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2019-10-13 22:19:09,618 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-13 22:19:09,618 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock [2019-10-13 22:19:09,619 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock [2019-10-13 22:19:09,619 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_bh [2019-10-13 22:19:09,619 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irq [2019-10-13 22:19:09,619 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2019-10-13 22:19:09,619 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_trylock_bh [2019-10-13 22:19:09,619 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_bh [2019-10-13 22:19:09,619 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irq [2019-10-13 22:19:09,620 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2019-10-13 22:19:09,620 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_irq [2019-10-13 22:19:09,620 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_irq [2019-10-13 22:19:09,620 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2019-10-13 22:19:09,620 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-10-13 22:19:09,620 INFO L138 BoogieDeclarations]: Found implementation of procedure n_tty_ioctl_helper [2019-10-13 22:19:09,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_index [2019-10-13 22:19:09,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_input [2019-10-13 22:19:09,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_input_error [2019-10-13 22:19:09,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2019-10-13 22:19:09,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_register_channel [2019-10-13 22:19:09,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unit_number [2019-10-13 22:19:09,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2019-10-13 22:19:09,621 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2019-10-13 22:19:09,622 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 22:19:09,622 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-10-13 22:19:09,622 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-10-13 22:19:09,622 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-10-13 22:19:09,622 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2019-10-13 22:19:09,623 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2019-10-13 22:19:09,623 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2019-10-13 22:19:09,623 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2019-10-13 22:19:09,623 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2019-10-13 22:19:09,625 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_mode_ioctl [2019-10-13 22:19:09,625 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_register_ldisc [2019-10-13 22:19:09,625 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_termios_baud_rate [2019-10-13 22:19:09,625 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_ldisc [2019-10-13 22:19:09,626 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unthrottle [2019-10-13 22:19:09,626 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2019-10-13 22:19:09,626 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 22:19:09,626 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 22:19:09,626 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-13 22:19:09,627 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-13 22:19:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:19:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-13 22:19:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2019-10-13 22:19:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2019-10-13 22:19:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-10-13 22:19:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2019-10-13 22:19:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2019-10-13 22:19:09,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 22:19:09,628 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2019-10-13 22:19:09,628 INFO L130 BoogieDeclarations]: Found specification of procedure __swab16p [2019-10-13 22:19:09,628 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2019-10-13 22:19:09,634 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 22:19:09,634 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2019-10-13 22:19:09,634 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-10-13 22:19:09,634 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-13 22:19:09,634 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2019-10-13 22:19:09,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 22:19:09,635 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2019-10-13 22:19:09,635 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2019-10-13 22:19:09,635 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-13 22:19:09,635 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_bh [2019-10-13 22:19:09,635 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irq [2019-10-13 22:19:09,635 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2019-10-13 22:19:09,635 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_trylock_bh [2019-10-13 22:19:09,636 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_bh [2019-10-13 22:19:09,636 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irq [2019-10-13 22:19:09,636 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2019-10-13 22:19:09,636 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock [2019-10-13 22:19:09,636 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_irq [2019-10-13 22:19:09,636 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock [2019-10-13 22:19:09,636 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_irq [2019-10-13 22:19:09,637 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-13 22:19:09,637 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2019-10-13 22:19:09,637 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2019-10-13 22:19:09,637 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2019-10-13 22:19:09,637 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2019-10-13 22:19:09,637 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2019-10-13 22:19:09,637 INFO L130 BoogieDeclarations]: Found specification of procedure spin_trylock_bh [2019-10-13 22:19:09,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:19:09,638 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2019-10-13 22:19:09,638 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2019-10-13 22:19:09,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 22:19:09,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:19:09,638 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2019-10-13 22:19:09,638 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2019-10-13 22:19:09,638 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 22:19:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 22:19:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-13 22:19:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-13 22:19:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-13 22:19:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2019-10-13 22:19:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-13 22:19:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user_overflow [2019-10-13 22:19:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2019-10-13 22:19:09,640 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2019-10-13 22:19:09,640 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-13 22:19:09,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-10-13 22:19:09,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-10-13 22:19:09,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-10-13 22:19:09,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-10-13 22:19:09,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_12 [2019-10-13 22:19:09,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_13 [2019-10-13 22:19:09,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_16 [2019-10-13 22:19:09,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_19 [2019-10-13 22:19:09,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_20 [2019-10-13 22:19:09,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-10-13 22:19:09,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_17 [2019-10-13 22:19:09,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_18 [2019-10-13 22:19:09,643 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2019-10-13 22:19:09,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:19:09,644 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_head_init [2019-10-13 22:19:09,644 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2019-10-13 22:19:09,644 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2019-10-13 22:19:09,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_dequeue_14 [2019-10-13 22:19:09,644 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2019-10-13 22:19:09,644 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-10-13 22:19:09,644 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-10-13 22:19:09,645 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-10-13 22:19:09,645 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2019-10-13 22:19:09,645 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2019-10-13 22:19:09,645 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2019-10-13 22:19:09,645 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2019-10-13 22:19:09,645 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2019-10-13 22:19:09,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_15 [2019-10-13 22:19:09,646 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2019-10-13 22:19:09,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-13 22:19:09,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-10-13 22:19:09,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-10-13 22:19:09,646 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 22:19:09,646 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 22:19:09,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 22:19:09,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2019-10-13 22:19:09,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-13 22:19:09,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 22:19:09,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 22:19:09,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 22:19:09,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 22:19:09,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-13 22:19:09,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-13 22:19:09,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-13 22:19:09,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-13 22:19:09,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-13 22:19:09,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 22:19:09,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-13 22:19:09,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-13 22:19:09,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_ppp_channel_ops_2 [2019-10-13 22:19:09,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_target_type_1 [2019-10-13 22:19:09,648 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unthrottle [2019-10-13 22:19:09,649 INFO L130 BoogieDeclarations]: Found specification of procedure tty_termios_baud_rate [2019-10-13 22:19:09,649 INFO L130 BoogieDeclarations]: Found specification of procedure tty_get_baud_rate [2019-10-13 22:19:09,649 INFO L130 BoogieDeclarations]: Found specification of procedure tty_mode_ioctl [2019-10-13 22:19:09,649 INFO L130 BoogieDeclarations]: Found specification of procedure tty_register_ldisc [2019-10-13 22:19:09,653 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_ldisc [2019-10-13 22:19:09,653 INFO L130 BoogieDeclarations]: Found specification of procedure n_tty_ioctl_helper [2019-10-13 22:19:09,653 INFO L130 BoogieDeclarations]: Found specification of procedure __tasklet_schedule [2019-10-13 22:19:09,654 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2019-10-13 22:19:09,654 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2019-10-13 22:19:09,654 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2019-10-13 22:19:09,654 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2019-10-13 22:19:09,654 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_input [2019-10-13 22:19:09,655 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_input_error [2019-10-13 22:19:09,655 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_register_channel [2019-10-13 22:19:09,657 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2019-10-13 22:19:09,657 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_index [2019-10-13 22:19:09,658 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unit_number [2019-10-13 22:19:09,658 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2019-10-13 22:19:09,658 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_txmunge [2019-10-13 22:19:09,658 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_send [2019-10-13 22:19:09,658 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_ioctl [2019-10-13 22:19:09,658 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_process [2019-10-13 22:19:09,658 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_push [2019-10-13 22:19:09,659 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_flush_output [2019-10-13 22:19:09,659 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_input [2019-10-13 22:19:09,659 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_print_buffer [2019-10-13 22:19:09,659 INFO L130 BoogieDeclarations]: Found specification of procedure sp_get [2019-10-13 22:19:09,659 INFO L130 BoogieDeclarations]: Found specification of procedure sp_put [2019-10-13 22:19:09,659 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_open [2019-10-13 22:19:09,659 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_close [2019-10-13 22:19:09,660 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_hangup [2019-10-13 22:19:09,660 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_read [2019-10-13 22:19:09,660 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_write [2019-10-13 22:19:09,660 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_synctty_ioctl [2019-10-13 22:19:09,660 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_poll [2019-10-13 22:19:09,660 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_receive [2019-10-13 22:19:09,660 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_wakeup [2019-10-13 22:19:09,661 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_init [2019-10-13 22:19:09,661 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-13 22:19:09,661 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_cleanup [2019-10-13 22:19:09,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 22:19:09,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 22:19:09,661 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:19:09,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-10-13 22:19:09,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-13 22:19:09,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-10-13 22:19:09,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-10-13 22:19:09,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-10-13 22:19:09,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-13 22:19:09,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-13 22:19:09,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-13 22:19:09,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-13 22:19:09,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-10-13 22:19:09,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-10-13 22:19:09,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-10-13 22:19:09,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-10-13 22:19:09,663 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 22:19:09,663 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 22:19:09,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:19:09,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 22:19:09,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 22:19:09,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:19:09,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-13 22:19:09,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-13 22:19:09,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-13 22:19:09,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-13 22:19:10,525 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-13 22:19:20,141 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:19:20,142 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 22:19:20,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:20 BoogieIcfgContainer [2019-10-13 22:19:20,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:19:20,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:19:20,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:19:20,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:19:20,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:19:06" (1/3) ... [2019-10-13 22:19:20,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48958f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:20, skipping insertion in model container [2019-10-13 22:19:20,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:09" (2/3) ... [2019-10-13 22:19:20,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48958f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:20, skipping insertion in model container [2019-10-13 22:19:20,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:20" (3/3) ... [2019-10-13 22:19:20,153 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2019-10-13 22:19:20,165 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:19:20,179 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:19:20,193 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:19:20,233 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:19:20,234 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:19:20,234 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:19:20,234 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:19:20,234 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:19:20,234 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:19:20,234 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:19:20,234 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:19:20,284 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states. [2019-10-13 22:19:20,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-13 22:19:20,307 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:19:20,308 INFO L380 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:19:20,313 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:19:20,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:19:20,320 INFO L82 PathProgramCache]: Analyzing trace with hash 978774204, now seen corresponding path program 1 times [2019-10-13 22:19:20,330 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:19:20,331 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721845132] [2019-10-13 22:19:20,331 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:20,331 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:20,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:19:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:19:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-10-13 22:19:20,974 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721845132] [2019-10-13 22:19:20,975 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:19:20,975 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:19:20,976 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910319768] [2019-10-13 22:19:20,983 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:19:20,984 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:19:20,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:19:21,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:19:21,002 INFO L87 Difference]: Start difference. First operand 812 states. Second operand 3 states. [2019-10-13 22:19:21,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:19:21,308 INFO L93 Difference]: Finished difference Result 2188 states and 2811 transitions. [2019-10-13 22:19:21,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:19:21,310 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2019-10-13 22:19:21,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:19:21,349 INFO L225 Difference]: With dead ends: 2188 [2019-10-13 22:19:21,350 INFO L226 Difference]: Without dead ends: 1438 [2019-10-13 22:19:21,361 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:19:21,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2019-10-13 22:19:21,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1438. [2019-10-13 22:19:21,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1438 states. [2019-10-13 22:19:21,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 1795 transitions. [2019-10-13 22:19:21,567 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 1795 transitions. Word has length 95 [2019-10-13 22:19:21,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:19:21,568 INFO L462 AbstractCegarLoop]: Abstraction has 1438 states and 1795 transitions. [2019-10-13 22:19:21,569 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:19:21,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 1795 transitions. [2019-10-13 22:19:21,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-13 22:19:21,585 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:19:21,585 INFO L380 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:19:21,586 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:19:21,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:19:21,586 INFO L82 PathProgramCache]: Analyzing trace with hash -2098059860, now seen corresponding path program 1 times [2019-10-13 22:19:21,587 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:19:21,587 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544547195] [2019-10-13 22:19:21,589 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:21,589 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:21,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:19:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:19:21,891 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-10-13 22:19:21,891 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544547195] [2019-10-13 22:19:21,892 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:19:21,892 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 22:19:21,892 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731565099] [2019-10-13 22:19:21,894 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 22:19:21,895 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:19:21,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 22:19:21,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 22:19:21,895 INFO L87 Difference]: Start difference. First operand 1438 states and 1795 transitions. Second operand 6 states. [2019-10-13 22:19:23,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:19:23,217 INFO L93 Difference]: Finished difference Result 2852 states and 3614 transitions. [2019-10-13 22:19:23,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 22:19:23,218 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-10-13 22:19:23,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:19:23,246 INFO L225 Difference]: With dead ends: 2852 [2019-10-13 22:19:23,246 INFO L226 Difference]: Without dead ends: 2834 [2019-10-13 22:19:23,249 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-13 22:19:23,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2019-10-13 22:19:23,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 2834. [2019-10-13 22:19:23,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2834 states. [2019-10-13 22:19:23,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2834 states to 2834 states and 3594 transitions. [2019-10-13 22:19:23,403 INFO L78 Accepts]: Start accepts. Automaton has 2834 states and 3594 transitions. Word has length 98 [2019-10-13 22:19:23,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:19:23,404 INFO L462 AbstractCegarLoop]: Abstraction has 2834 states and 3594 transitions. [2019-10-13 22:19:23,404 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 22:19:23,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2834 states and 3594 transitions. [2019-10-13 22:19:23,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-13 22:19:23,416 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:19:23,417 INFO L380 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2019-10-13 22:19:23,417 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:19:23,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:19:23,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1252515599, now seen corresponding path program 1 times [2019-10-13 22:19:23,418 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:19:23,418 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060245167] [2019-10-13 22:19:23,418 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:23,418 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:23,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:19:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:19:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-10-13 22:19:23,607 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060245167] [2019-10-13 22:19:23,608 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:19:23,608 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:19:23,608 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019405715] [2019-10-13 22:19:23,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:19:23,610 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:19:23,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:19:23,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:19:23,611 INFO L87 Difference]: Start difference. First operand 2834 states and 3594 transitions. Second operand 3 states. [2019-10-13 22:19:23,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:19:23,916 INFO L93 Difference]: Finished difference Result 7034 states and 8901 transitions. [2019-10-13 22:19:23,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:19:23,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2019-10-13 22:19:23,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:19:23,942 INFO L225 Difference]: With dead ends: 7034 [2019-10-13 22:19:23,942 INFO L226 Difference]: Without dead ends: 4232 [2019-10-13 22:19:23,953 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:19:23,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4232 states. [2019-10-13 22:19:24,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4232 to 4212. [2019-10-13 22:19:24,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4212 states. [2019-10-13 22:19:24,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4212 states to 4212 states and 5326 transitions. [2019-10-13 22:19:24,142 INFO L78 Accepts]: Start accepts. Automaton has 4212 states and 5326 transitions. Word has length 157 [2019-10-13 22:19:24,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:19:24,142 INFO L462 AbstractCegarLoop]: Abstraction has 4212 states and 5326 transitions. [2019-10-13 22:19:24,142 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:19:24,143 INFO L276 IsEmpty]: Start isEmpty. Operand 4212 states and 5326 transitions. [2019-10-13 22:19:24,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-13 22:19:24,153 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:19:24,153 INFO L380 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:19:24,153 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:19:24,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:19:24,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1374047328, now seen corresponding path program 1 times [2019-10-13 22:19:24,154 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:19:24,154 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34187769] [2019-10-13 22:19:24,154 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:24,154 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:24,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:19:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:19:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-10-13 22:19:24,307 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34187769] [2019-10-13 22:19:24,307 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:19:24,307 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:19:24,308 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936893325] [2019-10-13 22:19:24,308 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:19:24,309 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:19:24,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:19:24,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:19:24,309 INFO L87 Difference]: Start difference. First operand 4212 states and 5326 transitions. Second operand 3 states. [2019-10-13 22:19:24,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:19:24,525 INFO L93 Difference]: Finished difference Result 10322 states and 12999 transitions. [2019-10-13 22:19:24,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:19:24,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2019-10-13 22:19:24,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:19:24,571 INFO L225 Difference]: With dead ends: 10322 [2019-10-13 22:19:24,572 INFO L226 Difference]: Without dead ends: 6142 [2019-10-13 22:19:24,591 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:19:24,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6142 states. [2019-10-13 22:19:25,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6142 to 6124. [2019-10-13 22:19:25,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6124 states. [2019-10-13 22:19:25,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6124 states to 6124 states and 7690 transitions. [2019-10-13 22:19:25,039 INFO L78 Accepts]: Start accepts. Automaton has 6124 states and 7690 transitions. Word has length 175 [2019-10-13 22:19:25,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:19:25,039 INFO L462 AbstractCegarLoop]: Abstraction has 6124 states and 7690 transitions. [2019-10-13 22:19:25,040 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:19:25,040 INFO L276 IsEmpty]: Start isEmpty. Operand 6124 states and 7690 transitions. [2019-10-13 22:19:25,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-13 22:19:25,056 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:19:25,056 INFO L380 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 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] [2019-10-13 22:19:25,057 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:19:25,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:19:25,057 INFO L82 PathProgramCache]: Analyzing trace with hash 727239341, now seen corresponding path program 1 times [2019-10-13 22:19:25,057 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:19:25,058 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053860775] [2019-10-13 22:19:25,058 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:25,058 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:25,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:19:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:19:25,222 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2019-10-13 22:19:25,223 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053860775] [2019-10-13 22:19:25,223 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:19:25,223 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:19:25,223 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655948540] [2019-10-13 22:19:25,224 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:19:25,224 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:19:25,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:19:25,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:19:25,225 INFO L87 Difference]: Start difference. First operand 6124 states and 7690 transitions. Second operand 3 states. [2019-10-13 22:19:25,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:19:25,674 INFO L93 Difference]: Finished difference Result 15002 states and 18841 transitions. [2019-10-13 22:19:25,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:19:25,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2019-10-13 22:19:25,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:19:25,753 INFO L225 Difference]: With dead ends: 15002 [2019-10-13 22:19:25,753 INFO L226 Difference]: Without dead ends: 8918 [2019-10-13 22:19:25,789 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:19:25,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8918 states. [2019-10-13 22:19:26,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8918 to 8898. [2019-10-13 22:19:26,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8898 states. [2019-10-13 22:19:26,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8898 states to 8898 states and 11078 transitions. [2019-10-13 22:19:26,546 INFO L78 Accepts]: Start accepts. Automaton has 8898 states and 11078 transitions. Word has length 190 [2019-10-13 22:19:26,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:19:26,549 INFO L462 AbstractCegarLoop]: Abstraction has 8898 states and 11078 transitions. [2019-10-13 22:19:26,549 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:19:26,550 INFO L276 IsEmpty]: Start isEmpty. Operand 8898 states and 11078 transitions. [2019-10-13 22:19:26,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-10-13 22:19:26,583 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:19:26,584 INFO L380 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 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] [2019-10-13 22:19:26,584 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:19:26,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:19:26,585 INFO L82 PathProgramCache]: Analyzing trace with hash -693603727, now seen corresponding path program 1 times [2019-10-13 22:19:26,586 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:19:26,586 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102656950] [2019-10-13 22:19:26,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:26,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:26,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:19:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:19:26,864 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2019-10-13 22:19:26,865 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102656950] [2019-10-13 22:19:26,865 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:19:26,866 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:19:26,866 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909473755] [2019-10-13 22:19:26,867 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:19:26,868 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:19:26,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:19:26,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:19:26,875 INFO L87 Difference]: Start difference. First operand 8898 states and 11078 transitions. Second operand 3 states. [2019-10-13 22:19:27,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:19:27,177 INFO L93 Difference]: Finished difference Result 13408 states and 16914 transitions. [2019-10-13 22:19:27,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:19:27,178 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2019-10-13 22:19:27,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:19:27,251 INFO L225 Difference]: With dead ends: 13408 [2019-10-13 22:19:27,251 INFO L226 Difference]: Without dead ends: 8938 [2019-10-13 22:19:27,273 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:19:27,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8938 states. [2019-10-13 22:19:27,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8938 to 8918. [2019-10-13 22:19:27,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8918 states. [2019-10-13 22:19:27,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8918 states to 8918 states and 11098 transitions. [2019-10-13 22:19:27,684 INFO L78 Accepts]: Start accepts. Automaton has 8918 states and 11098 transitions. Word has length 194 [2019-10-13 22:19:27,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:19:27,686 INFO L462 AbstractCegarLoop]: Abstraction has 8918 states and 11098 transitions. [2019-10-13 22:19:27,686 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:19:27,687 INFO L276 IsEmpty]: Start isEmpty. Operand 8918 states and 11098 transitions. [2019-10-13 22:19:27,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-13 22:19:27,708 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:19:27,708 INFO L380 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 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] [2019-10-13 22:19:27,708 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:19:27,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:19:27,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1578012143, now seen corresponding path program 1 times [2019-10-13 22:19:27,709 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:19:27,709 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868317456] [2019-10-13 22:19:27,709 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:27,710 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:27,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:19:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:19:28,267 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2019-10-13 22:19:28,268 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868317456] [2019-10-13 22:19:28,268 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:19:28,268 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 22:19:28,269 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955300838] [2019-10-13 22:19:28,269 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 22:19:28,270 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:19:28,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 22:19:28,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-13 22:19:28,271 INFO L87 Difference]: Start difference. First operand 8918 states and 11098 transitions. Second operand 9 states.