/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-3.16-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-fb55353 [2019-11-06 23:36:08,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 23:36:08,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 23:36:08,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 23:36:08,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 23:36:08,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 23:36:08,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 23:36:08,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 23:36:08,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 23:36:08,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 23:36:08,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 23:36:08,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 23:36:08,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 23:36:08,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 23:36:08,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 23:36:08,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 23:36:08,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 23:36:08,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 23:36:08,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 23:36:08,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 23:36:08,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 23:36:08,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 23:36:08,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 23:36:08,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 23:36:08,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 23:36:08,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 23:36:08,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 23:36:08,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 23:36:08,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 23:36:08,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 23:36:08,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 23:36:08,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 23:36:08,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 23:36:08,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 23:36:08,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 23:36:08,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 23:36:08,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 23:36:08,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 23:36:08,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 23:36:08,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 23:36:08,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 23:36:08,727 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 23:36:08,755 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 23:36:08,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 23:36:08,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 23:36:08,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 23:36:08,758 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 23:36:08,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 23:36:08,758 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 23:36:08,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 23:36:08,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 23:36:08,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 23:36:08,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 23:36:08,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 23:36:08,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 23:36:08,763 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 23:36:08,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 23:36:08,764 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 23:36:08,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 23:36:08,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 23:36:08,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 23:36:08,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 23:36:08,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 23:36:08,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 23:36:08,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 23:36:08,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 23:36:08,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 23:36:08,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 23:36:08,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 23:36:08,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 23:36:08,771 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 23:36:09,039 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 23:36:09,056 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 23:36:09,060 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 23:36:09,061 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 23:36:09,062 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 23:36:09,062 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2019-11-06 23:36:09,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44df91d83/2d777c53d79e47bfa21754f64851f6f3/FLAG4c763e1db [2019-11-06 23:36:09,944 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 23:36:09,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2019-11-06 23:36:09,992 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44df91d83/2d777c53d79e47bfa21754f64851f6f3/FLAG4c763e1db [2019-11-06 23:36:10,505 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44df91d83/2d777c53d79e47bfa21754f64851f6f3 [2019-11-06 23:36:10,519 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 23:36:10,520 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 23:36:10,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 23:36:10,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 23:36:10,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 23:36:10,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:36:10" (1/1) ... [2019-11-06 23:36:10,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55bf1148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:36:10, skipping insertion in model container [2019-11-06 23:36:10,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:36:10" (1/1) ... [2019-11-06 23:36:10,551 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 23:36:10,791 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 23:36:12,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 23:36:12,759 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 23:36:13,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 23:36:13,312 INFO L192 MainTranslator]: Completed translation [2019-11-06 23:36:13,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:36:13 WrapperNode [2019-11-06 23:36:13,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 23:36:13,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 23:36:13,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 23:36:13,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 23:36:13,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:36:13" (1/1) ... [2019-11-06 23:36:13,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:36:13" (1/1) ... [2019-11-06 23:36:13,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:36:13" (1/1) ... [2019-11-06 23:36:13,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:36:13" (1/1) ... [2019-11-06 23:36:13,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:36:13" (1/1) ... [2019-11-06 23:36:13,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:36:13" (1/1) ... [2019-11-06 23:36:13,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:36:13" (1/1) ... [2019-11-06 23:36:13,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 23:36:13,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 23:36:13,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 23:36:13,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 23:36:13,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:36:13" (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 23:36:13,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 23:36:13,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 23:36:13,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-11-06 23:36:13,620 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2019-11-06 23:36:13,621 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2019-11-06 23:36:13,621 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-11-06 23:36:13,621 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2019-11-06 23:36:13,621 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2019-11-06 23:36:13,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2019-11-06 23:36:13,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab16p [2019-11-06 23:36:13,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2019-11-06 23:36:13,622 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2019-11-06 23:36:13,622 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2019-11-06 23:36:13,623 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2019-11-06 23:36:13,623 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-11-06 23:36:13,623 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2019-11-06 23:36:13,623 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2019-11-06 23:36:13,624 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2019-11-06 23:36:13,624 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2019-11-06 23:36:13,627 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2019-11-06 23:36:13,630 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_trylock_bh [2019-11-06 23:36:13,630 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2019-11-06 23:36:13,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-11-06 23:36:13,630 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-11-06 23:36:13,630 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-11-06 23:36:13,631 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2019-11-06 23:36:13,631 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-11-06 23:36:13,631 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2019-11-06 23:36:13,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_head_init [2019-11-06 23:36:13,631 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2019-11-06 23:36:13,631 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2019-11-06 23:36:13,631 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2019-11-06 23:36:13,632 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2019-11-06 23:36:13,632 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2019-11-06 23:36:13,632 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2019-11-06 23:36:13,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-06 23:36:13,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-06 23:36:13,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-11-06 23:36:13,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-11-06 23:36:13,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-11-06 23:36:13,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-11-06 23:36:13,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-11-06 23:36:13,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-11-06 23:36:13,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-11-06 23:36:13,635 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_get_baud_rate [2019-11-06 23:36:13,635 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2019-11-06 23:36:13,635 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2019-11-06 23:36:13,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_print_buffer [2019-11-06 23:36:13,635 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_get [2019-11-06 23:36:13,636 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_put [2019-11-06 23:36:13,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_open [2019-11-06 23:36:13,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_close [2019-11-06 23:36:13,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_hangup [2019-11-06 23:36:13,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_read [2019-11-06 23:36:13,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_write [2019-11-06 23:36:13,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_synctty_ioctl [2019-11-06 23:36:13,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_poll [2019-11-06 23:36:13,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_receive [2019-11-06 23:36:13,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_wakeup [2019-11-06 23:36:13,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_init [2019-11-06 23:36:13,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_ioctl [2019-11-06 23:36:13,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_process [2019-11-06 23:36:13,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_txmunge [2019-11-06 23:36:13,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_send [2019-11-06 23:36:13,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_push [2019-11-06 23:36:13,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_flush_output [2019-11-06 23:36:13,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_input [2019-11-06 23:36:13,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_cleanup [2019-11-06 23:36:13,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_ppp_channel_ops_2 [2019-11-06 23:36:13,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_target_type_1 [2019-11-06 23:36:13,641 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 23:36:13,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-11-06 23:36:13,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-11-06 23:36:13,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-11-06 23:36:13,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-11-06 23:36:13,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-11-06 23:36:13,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_12 [2019-11-06 23:36:13,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_13 [2019-11-06 23:36:13,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_dequeue_14 [2019-11-06 23:36:13,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_15 [2019-11-06 23:36:13,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_16 [2019-11-06 23:36:13,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_17 [2019-11-06 23:36:13,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_18 [2019-11-06 23:36:13,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_19 [2019-11-06 23:36:13,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_20 [2019-11-06 23:36:13,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-11-06 23:36:13,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-11-06 23:36:13,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-11-06 23:36:13,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-11-06 23:36:13,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-11-06 23:36:13,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-11-06 23:36:13,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-11-06 23:36:13,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-11-06 23:36:13,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-11-06 23:36:13,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-11-06 23:36:13,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-06 23:36:13,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-11-06 23:36:13,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-11-06 23:36:13,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-11-06 23:36:13,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-11-06 23:36:13,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-11-06 23:36:13,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-06 23:36:13,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user_overflow [2019-11-06 23:36:13,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user_overflow [2019-11-06 23:36:13,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2019-11-06 23:36:13,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-11-06 23:36:13,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __tasklet_schedule [2019-11-06 23:36:13,652 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2019-11-06 23:36:13,652 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-11-06 23:36:13,652 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock [2019-11-06 23:36:13,653 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock [2019-11-06 23:36:13,653 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_bh [2019-11-06 23:36:13,653 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irq [2019-11-06 23:36:13,653 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2019-11-06 23:36:13,654 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_trylock_bh [2019-11-06 23:36:13,654 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_bh [2019-11-06 23:36:13,654 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irq [2019-11-06 23:36:13,654 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2019-11-06 23:36:13,655 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_irq [2019-11-06 23:36:13,655 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_irq [2019-11-06 23:36:13,655 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2019-11-06 23:36:13,656 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-11-06 23:36:13,656 INFO L138 BoogieDeclarations]: Found implementation of procedure n_tty_ioctl_helper [2019-11-06 23:36:13,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_index [2019-11-06 23:36:13,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_input [2019-11-06 23:36:13,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_input_error [2019-11-06 23:36:13,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2019-11-06 23:36:13,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_register_channel [2019-11-06 23:36:13,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unit_number [2019-11-06 23:36:13,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2019-11-06 23:36:13,658 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2019-11-06 23:36:13,659 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-11-06 23:36:13,659 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-11-06 23:36:13,659 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-11-06 23:36:13,660 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-11-06 23:36:13,660 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2019-11-06 23:36:13,661 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2019-11-06 23:36:13,663 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2019-11-06 23:36:13,664 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2019-11-06 23:36:13,664 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2019-11-06 23:36:13,664 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_mode_ioctl [2019-11-06 23:36:13,664 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_register_ldisc [2019-11-06 23:36:13,665 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_termios_baud_rate [2019-11-06 23:36:13,665 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_ldisc [2019-11-06 23:36:13,672 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unthrottle [2019-11-06 23:36:13,672 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2019-11-06 23:36:13,672 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-06 23:36:13,672 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-06 23:36:13,673 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-06 23:36:13,673 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-06 23:36:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 23:36:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-11-06 23:36:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2019-11-06 23:36:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2019-11-06 23:36:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-11-06 23:36:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2019-11-06 23:36:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2019-11-06 23:36:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 23:36:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2019-11-06 23:36:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure __swab16p [2019-11-06 23:36:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2019-11-06 23:36:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-11-06 23:36:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2019-11-06 23:36:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-11-06 23:36:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-06 23:36:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2019-11-06 23:36:13,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 23:36:13,677 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2019-11-06 23:36:13,677 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2019-11-06 23:36:13,677 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-11-06 23:36:13,677 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_bh [2019-11-06 23:36:13,677 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irq [2019-11-06 23:36:13,678 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2019-11-06 23:36:13,678 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_trylock_bh [2019-11-06 23:36:13,678 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_bh [2019-11-06 23:36:13,678 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irq [2019-11-06 23:36:13,678 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2019-11-06 23:36:13,678 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock [2019-11-06 23:36:13,679 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_irq [2019-11-06 23:36:13,679 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock [2019-11-06 23:36:13,679 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_irq [2019-11-06 23:36:13,679 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-11-06 23:36:13,679 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2019-11-06 23:36:13,679 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2019-11-06 23:36:13,680 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2019-11-06 23:36:13,680 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2019-11-06 23:36:13,680 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2019-11-06 23:36:13,680 INFO L130 BoogieDeclarations]: Found specification of procedure spin_trylock_bh [2019-11-06 23:36:13,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 23:36:13,681 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2019-11-06 23:36:13,681 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2019-11-06 23:36:13,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 23:36:13,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 23:36:13,681 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2019-11-06 23:36:13,681 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2019-11-06 23:36:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-06 23:36:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-06 23:36:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-11-06 23:36:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-11-06 23:36:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-11-06 23:36:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2019-11-06 23:36:13,683 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-11-06 23:36:13,683 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user_overflow [2019-11-06 23:36:13,683 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2019-11-06 23:36:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2019-11-06 23:36:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-11-06 23:36:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-11-06 23:36:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-11-06 23:36:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-11-06 23:36:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-11-06 23:36:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_12 [2019-11-06 23:36:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_13 [2019-11-06 23:36:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_16 [2019-11-06 23:36:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_19 [2019-11-06 23:36:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_20 [2019-11-06 23:36:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-11-06 23:36:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_17 [2019-11-06 23:36:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_18 [2019-11-06 23:36:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2019-11-06 23:36:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 23:36:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_head_init [2019-11-06 23:36:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2019-11-06 23:36:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2019-11-06 23:36:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_dequeue_14 [2019-11-06 23:36:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2019-11-06 23:36:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-11-06 23:36:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-11-06 23:36:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-11-06 23:36:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2019-11-06 23:36:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2019-11-06 23:36:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2019-11-06 23:36:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2019-11-06 23:36:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2019-11-06 23:36:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_15 [2019-11-06 23:36:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2019-11-06 23:36:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-06 23:36:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-11-06 23:36:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-11-06 23:36:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 23:36:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-06 23:36:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 23:36:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2019-11-06 23:36:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-11-06 23:36:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-06 23:36:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-06 23:36:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 23:36:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 23:36:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-06 23:36:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-06 23:36:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-11-06 23:36:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-11-06 23:36:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-11-06 23:36:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-11-06 23:36:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-11-06 23:36:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-11-06 23:36:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_ppp_channel_ops_2 [2019-11-06 23:36:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_target_type_1 [2019-11-06 23:36:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unthrottle [2019-11-06 23:36:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure tty_termios_baud_rate [2019-11-06 23:36:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure tty_get_baud_rate [2019-11-06 23:36:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure tty_mode_ioctl [2019-11-06 23:36:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure tty_register_ldisc [2019-11-06 23:36:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_ldisc [2019-11-06 23:36:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure n_tty_ioctl_helper [2019-11-06 23:36:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure __tasklet_schedule [2019-11-06 23:36:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2019-11-06 23:36:13,701 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2019-11-06 23:36:13,701 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2019-11-06 23:36:13,701 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2019-11-06 23:36:13,701 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_input [2019-11-06 23:36:13,701 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_input_error [2019-11-06 23:36:13,702 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_register_channel [2019-11-06 23:36:13,703 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2019-11-06 23:36:13,703 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_index [2019-11-06 23:36:13,704 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unit_number [2019-11-06 23:36:13,704 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2019-11-06 23:36:13,704 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_txmunge [2019-11-06 23:36:13,704 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_send [2019-11-06 23:36:13,704 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_ioctl [2019-11-06 23:36:13,704 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_process [2019-11-06 23:36:13,704 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_push [2019-11-06 23:36:13,704 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_flush_output [2019-11-06 23:36:13,705 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_input [2019-11-06 23:36:13,705 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_print_buffer [2019-11-06 23:36:13,705 INFO L130 BoogieDeclarations]: Found specification of procedure sp_get [2019-11-06 23:36:13,705 INFO L130 BoogieDeclarations]: Found specification of procedure sp_put [2019-11-06 23:36:13,705 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_open [2019-11-06 23:36:13,705 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_close [2019-11-06 23:36:13,705 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_hangup [2019-11-06 23:36:13,705 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_read [2019-11-06 23:36:13,706 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_write [2019-11-06 23:36:13,706 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_synctty_ioctl [2019-11-06 23:36:13,706 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_poll [2019-11-06 23:36:13,706 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_receive [2019-11-06 23:36:13,706 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_wakeup [2019-11-06 23:36:13,706 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_init [2019-11-06 23:36:13,706 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-11-06 23:36:13,706 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_cleanup [2019-11-06 23:36:13,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-06 23:36:13,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-06 23:36:13,707 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 23:36:13,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-11-06 23:36:13,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-11-06 23:36:13,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-11-06 23:36:13,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-11-06 23:36:13,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-11-06 23:36:13,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-11-06 23:36:13,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-11-06 23:36:13,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-11-06 23:36:13,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-11-06 23:36:13,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-11-06 23:36:13,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-11-06 23:36:13,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-11-06 23:36:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-11-06 23:36:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-06 23:36:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 23:36:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 23:36:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-06 23:36:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 23:36:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 23:36:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-06 23:36:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-06 23:36:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-06 23:36:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-11-06 23:36:14,642 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-11-06 23:36:18,655 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 23:36:18,655 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-06 23:36:18,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:36:18 BoogieIcfgContainer [2019-11-06 23:36:18,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 23:36:18,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 23:36:18,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 23:36:18,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 23:36:18,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:36:10" (1/3) ... [2019-11-06 23:36:18,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33718c49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:36:18, skipping insertion in model container [2019-11-06 23:36:18,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:36:13" (2/3) ... [2019-11-06 23:36:18,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33718c49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:36:18, skipping insertion in model container [2019-11-06 23:36:18,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:36:18" (3/3) ... [2019-11-06 23:36:18,669 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 [2019-11-06 23:36:18,683 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 23:36:18,700 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 23:36:18,719 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 23:36:18,774 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 23:36:18,774 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 23:36:18,774 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 23:36:18,774 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 23:36:18,775 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 23:36:18,775 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 23:36:18,775 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 23:36:18,775 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 23:36:18,836 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states. [2019-11-06 23:36:18,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-11-06 23:36:18,875 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:36:18,877 INFO L410 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, 1, 1, 1] [2019-11-06 23:36:18,882 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:36:18,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:36:18,892 INFO L82 PathProgramCache]: Analyzing trace with hash -99284797, now seen corresponding path program 1 times [2019-11-06 23:36:18,907 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:36:18,908 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833981732] [2019-11-06 23:36:18,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:36:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:36:19,639 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-11-06 23:36:19,639 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833981732] [2019-11-06 23:36:19,640 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:36:19,641 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:36:19,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170428377] [2019-11-06 23:36:19,647 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:36:19,649 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:36:19,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:36:19,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:36:19,668 INFO L87 Difference]: Start difference. First operand 995 states. Second operand 3 states. [2019-11-06 23:36:20,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:36:20,026 INFO L93 Difference]: Finished difference Result 2699 states and 3524 transitions. [2019-11-06 23:36:20,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:36:20,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2019-11-06 23:36:20,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:36:20,073 INFO L225 Difference]: With dead ends: 2699 [2019-11-06 23:36:20,074 INFO L226 Difference]: Without dead ends: 1774 [2019-11-06 23:36:20,087 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 23:36:20,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2019-11-06 23:36:20,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1774. [2019-11-06 23:36:20,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1774 states. [2019-11-06 23:36:20,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 2259 transitions. [2019-11-06 23:36:20,274 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 2259 transitions. Word has length 101 [2019-11-06 23:36:20,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:36:20,275 INFO L462 AbstractCegarLoop]: Abstraction has 1774 states and 2259 transitions. [2019-11-06 23:36:20,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:36:20,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 2259 transitions. [2019-11-06 23:36:20,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-11-06 23:36:20,280 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:36:20,280 INFO L410 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, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 23:36:20,281 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:36:20,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:36:20,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1734399447, now seen corresponding path program 1 times [2019-11-06 23:36:20,282 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:36:20,282 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853673660] [2019-11-06 23:36:20,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:36:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:36:20,442 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-11-06 23:36:20,442 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853673660] [2019-11-06 23:36:20,442 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:36:20,443 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 23:36:20,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680236466] [2019-11-06 23:36:20,444 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 23:36:20,445 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:36:20,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 23:36:20,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-06 23:36:20,445 INFO L87 Difference]: Start difference. First operand 1774 states and 2259 transitions. Second operand 6 states. [2019-11-06 23:36:20,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:36:20,654 INFO L93 Difference]: Finished difference Result 3530 states and 4490 transitions. [2019-11-06 23:36:20,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 23:36:20,655 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2019-11-06 23:36:20,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:36:20,672 INFO L225 Difference]: With dead ends: 3530 [2019-11-06 23:36:20,672 INFO L226 Difference]: Without dead ends: 1790 [2019-11-06 23:36:20,679 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-06 23:36:20,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2019-11-06 23:36:20,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1779. [2019-11-06 23:36:20,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1779 states. [2019-11-06 23:36:20,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2263 transitions. [2019-11-06 23:36:20,791 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2263 transitions. Word has length 105 [2019-11-06 23:36:20,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:36:20,792 INFO L462 AbstractCegarLoop]: Abstraction has 1779 states and 2263 transitions. [2019-11-06 23:36:20,792 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 23:36:20,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2263 transitions. [2019-11-06 23:36:20,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-11-06 23:36:20,797 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:36:20,798 INFO L410 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, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 23:36:20,798 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:36:20,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:36:20,799 INFO L82 PathProgramCache]: Analyzing trace with hash -972219947, now seen corresponding path program 1 times [2019-11-06 23:36:20,799 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:36:20,799 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65794595] [2019-11-06 23:36:20,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:36:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:36:21,111 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-11-06 23:36:21,112 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65794595] [2019-11-06 23:36:21,112 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:36:21,112 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 23:36:21,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303316616] [2019-11-06 23:36:21,114 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 23:36:21,114 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:36:21,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 23:36:21,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-06 23:36:21,115 INFO L87 Difference]: Start difference. First operand 1779 states and 2263 transitions. Second operand 6 states. [2019-11-06 23:36:22,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:36:22,472 INFO L93 Difference]: Finished difference Result 5274 states and 6785 transitions. [2019-11-06 23:36:22,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 23:36:22,473 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2019-11-06 23:36:22,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:36:22,496 INFO L225 Difference]: With dead ends: 5274 [2019-11-06 23:36:22,496 INFO L226 Difference]: Without dead ends: 3510 [2019-11-06 23:36:22,504 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-06 23:36:22,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3510 states. [2019-11-06 23:36:22,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3510 to 3510. [2019-11-06 23:36:22,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3510 states. [2019-11-06 23:36:22,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 4524 transitions. [2019-11-06 23:36:22,657 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 4524 transitions. Word has length 105 [2019-11-06 23:36:22,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:36:22,658 INFO L462 AbstractCegarLoop]: Abstraction has 3510 states and 4524 transitions. [2019-11-06 23:36:22,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 23:36:22,658 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 4524 transitions. [2019-11-06 23:36:22,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-06 23:36:22,668 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:36:22,668 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 23:36:22,669 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:36:22,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:36:22,669 INFO L82 PathProgramCache]: Analyzing trace with hash -289884447, now seen corresponding path program 1 times [2019-11-06 23:36:22,670 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:36:22,670 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445434774] [2019-11-06 23:36:22,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:36:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:36:22,880 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-11-06 23:36:22,880 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445434774] [2019-11-06 23:36:22,881 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:36:22,881 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:36:22,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671486360] [2019-11-06 23:36:22,883 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:36:22,884 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:36:22,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:36:22,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:36:22,885 INFO L87 Difference]: Start difference. First operand 3510 states and 4524 transitions. Second operand 3 states. [2019-11-06 23:36:23,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:36:23,132 INFO L93 Difference]: Finished difference Result 8756 states and 11294 transitions. [2019-11-06 23:36:23,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:36:23,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-11-06 23:36:23,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:36:23,165 INFO L225 Difference]: With dead ends: 8756 [2019-11-06 23:36:23,165 INFO L226 Difference]: Without dead ends: 5280 [2019-11-06 23:36:23,179 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 23:36:23,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5280 states. [2019-11-06 23:36:23,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5280 to 5256. [2019-11-06 23:36:23,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5256 states. [2019-11-06 23:36:23,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5256 states to 5256 states and 6786 transitions. [2019-11-06 23:36:23,438 INFO L78 Accepts]: Start accepts. Automaton has 5256 states and 6786 transitions. Word has length 171 [2019-11-06 23:36:23,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:36:23,439 INFO L462 AbstractCegarLoop]: Abstraction has 5256 states and 6786 transitions. [2019-11-06 23:36:23,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:36:23,439 INFO L276 IsEmpty]: Start isEmpty. Operand 5256 states and 6786 transitions. [2019-11-06 23:36:23,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-11-06 23:36:23,460 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:36:23,461 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 23:36:23,461 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:36:23,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:36:23,461 INFO L82 PathProgramCache]: Analyzing trace with hash -465691413, now seen corresponding path program 1 times [2019-11-06 23:36:23,462 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:36:23,462 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831240674] [2019-11-06 23:36:23,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:36:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:36:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-11-06 23:36:23,751 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831240674] [2019-11-06 23:36:23,752 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:36:23,752 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:36:23,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900720959] [2019-11-06 23:36:23,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:36:23,754 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:36:23,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:36:23,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:36:23,754 INFO L87 Difference]: Start difference. First operand 5256 states and 6786 transitions. Second operand 3 states. [2019-11-06 23:36:24,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:36:24,005 INFO L93 Difference]: Finished difference Result 12829 states and 16443 transitions. [2019-11-06 23:36:24,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:36:24,006 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2019-11-06 23:36:24,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:36:24,064 INFO L225 Difference]: With dead ends: 12829 [2019-11-06 23:36:24,065 INFO L226 Difference]: Without dead ends: 7607 [2019-11-06 23:36:24,089 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 23:36:24,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7607 states. [2019-11-06 23:36:24,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7607 to 7577. [2019-11-06 23:36:24,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7577 states. [2019-11-06 23:36:24,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7577 states to 7577 states and 9663 transitions. [2019-11-06 23:36:24,442 INFO L78 Accepts]: Start accepts. Automaton has 7577 states and 9663 transitions. Word has length 194 [2019-11-06 23:36:24,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:36:24,443 INFO L462 AbstractCegarLoop]: Abstraction has 7577 states and 9663 transitions. [2019-11-06 23:36:24,444 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:36:24,444 INFO L276 IsEmpty]: Start isEmpty. Operand 7577 states and 9663 transitions. [2019-11-06 23:36:24,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-11-06 23:36:24,471 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:36:24,471 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 23:36:24,471 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:36:24,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:36:24,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1099759055, now seen corresponding path program 1 times [2019-11-06 23:36:24,472 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:36:24,472 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597783079] [2019-11-06 23:36:24,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:36:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:36:24,723 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2019-11-06 23:36:24,724 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597783079] [2019-11-06 23:36:24,724 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:36:24,724 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:36:24,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729928969] [2019-11-06 23:36:24,726 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:36:24,726 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:36:24,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:36:24,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:36:24,727 INFO L87 Difference]: Start difference. First operand 7577 states and 9663 transitions. Second operand 3 states. [2019-11-06 23:36:25,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:36:25,120 INFO L93 Difference]: Finished difference Result 18659 states and 23847 transitions. [2019-11-06 23:36:25,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:36:25,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2019-11-06 23:36:25,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:36:25,200 INFO L225 Difference]: With dead ends: 18659 [2019-11-06 23:36:25,201 INFO L226 Difference]: Without dead ends: 11125 [2019-11-06 23:36:25,228 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 23:36:25,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11125 states. [2019-11-06 23:36:25,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11125 to 11101. [2019-11-06 23:36:25,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11101 states. [2019-11-06 23:36:25,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 14109 transitions. [2019-11-06 23:36:25,627 INFO L78 Accepts]: Start accepts. Automaton has 11101 states and 14109 transitions. Word has length 209 [2019-11-06 23:36:25,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:36:25,627 INFO L462 AbstractCegarLoop]: Abstraction has 11101 states and 14109 transitions. [2019-11-06 23:36:25,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:36:25,628 INFO L276 IsEmpty]: Start isEmpty. Operand 11101 states and 14109 transitions. [2019-11-06 23:36:25,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-11-06 23:36:25,743 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:36:25,743 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 23:36:25,744 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:36:25,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:36:25,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1881653909, now seen corresponding path program 1 times [2019-11-06 23:36:25,745 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:36:25,745 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121561520] [2019-11-06 23:36:25,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:36:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:36:25,919 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2019-11-06 23:36:25,920 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121561520] [2019-11-06 23:36:25,920 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:36:25,920 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:36:25,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213282415] [2019-11-06 23:36:25,921 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:36:25,922 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:36:25,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:36:25,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:36:25,924 INFO L87 Difference]: Start difference. First operand 11101 states and 14109 transitions. Second operand 3 states. [2019-11-06 23:36:26,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:36:26,231 INFO L93 Difference]: Finished difference Result 16739 states and 21487 transitions. [2019-11-06 23:36:26,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:36:26,231 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2019-11-06 23:36:26,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:36:26,295 INFO L225 Difference]: With dead ends: 16739 [2019-11-06 23:36:26,296 INFO L226 Difference]: Without dead ends: 11141 [2019-11-06 23:36:26,324 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 23:36:26,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11141 states. [2019-11-06 23:36:26,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11141 to 11121. [2019-11-06 23:36:26,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11121 states. [2019-11-06 23:36:26,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11121 states to 11121 states and 14129 transitions. [2019-11-06 23:36:26,720 INFO L78 Accepts]: Start accepts. Automaton has 11121 states and 14129 transitions. Word has length 214 [2019-11-06 23:36:26,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:36:26,721 INFO L462 AbstractCegarLoop]: Abstraction has 11121 states and 14129 transitions. [2019-11-06 23:36:26,721 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:36:26,721 INFO L276 IsEmpty]: Start isEmpty. Operand 11121 states and 14129 transitions. [2019-11-06 23:36:26,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-11-06 23:36:26,749 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:36:26,749 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 23:36:26,750 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:36:26,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:36:26,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1957458250, now seen corresponding path program 1 times [2019-11-06 23:36:26,750 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:36:26,751 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171388690] [2019-11-06 23:36:26,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:36:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:36:27,237 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2019-11-06 23:36:27,237 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171388690] [2019-11-06 23:36:27,238 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:36:27,238 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 23:36:27,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141661912] [2019-11-06 23:36:27,239 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 23:36:27,240 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:36:27,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 23:36:27,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-11-06 23:36:27,240 INFO L87 Difference]: Start difference. First operand 11121 states and 14129 transitions. Second operand 9 states.