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 -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 18:31:50,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:31:50,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:31:50,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:31:50,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:31:50,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:31:50,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:31:50,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:31:50,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:31:50,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:31:50,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:31:50,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:31:50,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:31:50,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:31:50,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:31:50,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:31:50,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:31:50,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:31:50,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:31:50,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:31:50,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:31:50,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:31:50,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:31:50,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:31:50,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 18:31:50,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 18:31:50,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 18:31:50,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 18:31:50,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 18:31:50,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 18:31:50,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:31:50,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:31:50,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:31:50,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:31:50,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:31:50,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:31:50,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:31:50,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:31:50,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:31:50,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:31:50,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:31:50,674 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 18:31:50,696 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:31:50,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:31:50,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:31:50,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:31:50,698 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:31:50,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:31:50,699 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:31:50,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:31:50,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:31:50,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:31:50,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:31:50,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:31:50,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:31:50,700 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:31:50,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:31:50,701 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:31:50,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:31:50,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:31:50,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:31:50,701 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:31:50,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:31:50,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:31:50,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:31:50,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:31:50,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:31:50,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:31:50,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:31:50,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:31:50,705 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:31:50,989 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:31:51,005 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:31:51,009 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:31:51,011 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:31:51,011 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:31:51,012 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2019-10-13 18:31:51,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/687dbf648/f67ba8bcc756416bb5b2508460587fb8/FLAG9cca12a56 [2019-10-13 18:31:51,974 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:31:51,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2019-10-13 18:31:52,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/687dbf648/f67ba8bcc756416bb5b2508460587fb8/FLAG9cca12a56 [2019-10-13 18:31:52,476 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/687dbf648/f67ba8bcc756416bb5b2508460587fb8 [2019-10-13 18:31:52,487 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:31:52,488 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:31:52,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:31:52,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:31:52,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:31:52,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:31:52" (1/1) ... [2019-10-13 18:31:52,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19ca2523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:31:52, skipping insertion in model container [2019-10-13 18:31:52,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:31:52" (1/1) ... [2019-10-13 18:31:52,505 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:31:52,632 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:31:54,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:31:54,500 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:31:54,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:31:55,105 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:31:55,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:31:55 WrapperNode [2019-10-13 18:31:55,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:31:55,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:31:55,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:31:55,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:31:55,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:31:55" (1/1) ... [2019-10-13 18:31:55,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:31:55" (1/1) ... [2019-10-13 18:31:55,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:31:55" (1/1) ... [2019-10-13 18:31:55,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:31:55" (1/1) ... [2019-10-13 18:31:55,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:31:55" (1/1) ... [2019-10-13 18:31:55,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:31:55" (1/1) ... [2019-10-13 18:31:55,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:31:55" (1/1) ... [2019-10-13 18:31:55,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:31:55,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:31:55,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:31:55,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:31:55,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:31:55" (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 18:31:55,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:31:55,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:31:55,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-13 18:31:55,525 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2019-10-13 18:31:55,525 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2019-10-13 18:31:55,526 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-10-13 18:31:55,527 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2019-10-13 18:31:55,527 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2019-10-13 18:31:55,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2019-10-13 18:31:55,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab16p [2019-10-13 18:31:55,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2019-10-13 18:31:55,528 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2019-10-13 18:31:55,529 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2019-10-13 18:31:55,529 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2019-10-13 18:31:55,530 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-13 18:31:55,530 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2019-10-13 18:31:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2019-10-13 18:31:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2019-10-13 18:31:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2019-10-13 18:31:55,533 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2019-10-13 18:31:55,534 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_trylock_bh [2019-10-13 18:31:55,534 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2019-10-13 18:31:55,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-13 18:31:55,534 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-13 18:31:55,534 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-13 18:31:55,534 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2019-10-13 18:31:55,535 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-13 18:31:55,535 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2019-10-13 18:31:55,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_head_init [2019-10-13 18:31:55,535 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2019-10-13 18:31:55,535 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2019-10-13 18:31:55,535 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2019-10-13 18:31:55,535 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2019-10-13 18:31:55,536 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2019-10-13 18:31:55,536 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2019-10-13 18:31:55,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 18:31:55,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-13 18:31:55,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-13 18:31:55,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-13 18:31:55,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-13 18:31:55,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 18:31:55,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-13 18:31:55,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-13 18:31:55,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-13 18:31:55,538 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_get_baud_rate [2019-10-13 18:31:55,538 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2019-10-13 18:31:55,538 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2019-10-13 18:31:55,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_print_buffer [2019-10-13 18:31:55,538 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_get [2019-10-13 18:31:55,538 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_put [2019-10-13 18:31:55,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_open [2019-10-13 18:31:55,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_close [2019-10-13 18:31:55,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_hangup [2019-10-13 18:31:55,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_read [2019-10-13 18:31:55,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_write [2019-10-13 18:31:55,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_synctty_ioctl [2019-10-13 18:31:55,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_poll [2019-10-13 18:31:55,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_receive [2019-10-13 18:31:55,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_wakeup [2019-10-13 18:31:55,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_init [2019-10-13 18:31:55,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_ioctl [2019-10-13 18:31:55,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_process [2019-10-13 18:31:55,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_txmunge [2019-10-13 18:31:55,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_send [2019-10-13 18:31:55,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_push [2019-10-13 18:31:55,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_flush_output [2019-10-13 18:31:55,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_input [2019-10-13 18:31:55,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_cleanup [2019-10-13 18:31:55,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_ppp_channel_ops_2 [2019-10-13 18:31:55,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_target_type_1 [2019-10-13 18:31:55,542 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:31:55,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-10-13 18:31:55,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-10-13 18:31:55,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-10-13 18:31:55,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-10-13 18:31:55,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-10-13 18:31:55,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_12 [2019-10-13 18:31:55,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_13 [2019-10-13 18:31:55,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_dequeue_14 [2019-10-13 18:31:55,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_15 [2019-10-13 18:31:55,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_16 [2019-10-13 18:31:55,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_17 [2019-10-13 18:31:55,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_18 [2019-10-13 18:31:55,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_19 [2019-10-13 18:31:55,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_20 [2019-10-13 18:31:55,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-10-13 18:31:55,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-13 18:31:55,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-10-13 18:31:55,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-10-13 18:31:55,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-10-13 18:31:55,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-13 18:31:55,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-13 18:31:55,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-13 18:31:55,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-13 18:31:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-10-13 18:31:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 18:31:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-10-13 18:31:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-10-13 18:31:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-10-13 18:31:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-10-13 18:31:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-10-13 18:31:55,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 18:31:55,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user_overflow [2019-10-13 18:31:55,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user_overflow [2019-10-13 18:31:55,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2019-10-13 18:31:55,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-13 18:31:55,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __tasklet_schedule [2019-10-13 18:31:55,550 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2019-10-13 18:31:55,551 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-13 18:31:55,551 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock [2019-10-13 18:31:55,551 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock [2019-10-13 18:31:55,551 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_bh [2019-10-13 18:31:55,551 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irq [2019-10-13 18:31:55,551 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2019-10-13 18:31:55,552 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_trylock_bh [2019-10-13 18:31:55,552 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_bh [2019-10-13 18:31:55,552 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irq [2019-10-13 18:31:55,552 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2019-10-13 18:31:55,553 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_irq [2019-10-13 18:31:55,553 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_irq [2019-10-13 18:31:55,553 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2019-10-13 18:31:55,553 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-10-13 18:31:55,553 INFO L138 BoogieDeclarations]: Found implementation of procedure n_tty_ioctl_helper [2019-10-13 18:31:55,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_index [2019-10-13 18:31:55,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_input [2019-10-13 18:31:55,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_input_error [2019-10-13 18:31:55,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2019-10-13 18:31:55,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_register_channel [2019-10-13 18:31:55,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unit_number [2019-10-13 18:31:55,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2019-10-13 18:31:55,555 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2019-10-13 18:31:55,556 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 18:31:55,556 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-10-13 18:31:55,556 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-10-13 18:31:55,556 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-10-13 18:31:55,556 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2019-10-13 18:31:55,557 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2019-10-13 18:31:55,557 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2019-10-13 18:31:55,557 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2019-10-13 18:31:55,558 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2019-10-13 18:31:55,564 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_mode_ioctl [2019-10-13 18:31:55,564 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_register_ldisc [2019-10-13 18:31:55,565 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_termios_baud_rate [2019-10-13 18:31:55,565 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_ldisc [2019-10-13 18:31:55,571 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unthrottle [2019-10-13 18:31:55,571 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2019-10-13 18:31:55,571 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 18:31:55,572 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 18:31:55,572 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-13 18:31:55,572 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-13 18:31:55,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:31:55,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-13 18:31:55,572 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2019-10-13 18:31:55,572 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2019-10-13 18:31:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-10-13 18:31:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2019-10-13 18:31:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2019-10-13 18:31:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 18:31:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2019-10-13 18:31:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure __swab16p [2019-10-13 18:31:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2019-10-13 18:31:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 18:31:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2019-10-13 18:31:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-10-13 18:31:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-13 18:31:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2019-10-13 18:31:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 18:31:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2019-10-13 18:31:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2019-10-13 18:31:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-13 18:31:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_bh [2019-10-13 18:31:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irq [2019-10-13 18:31:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2019-10-13 18:31:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_trylock_bh [2019-10-13 18:31:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_bh [2019-10-13 18:31:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irq [2019-10-13 18:31:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2019-10-13 18:31:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock [2019-10-13 18:31:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_irq [2019-10-13 18:31:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock [2019-10-13 18:31:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_irq [2019-10-13 18:31:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-13 18:31:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2019-10-13 18:31:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2019-10-13 18:31:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2019-10-13 18:31:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2019-10-13 18:31:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2019-10-13 18:31:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure spin_trylock_bh [2019-10-13 18:31:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 18:31:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2019-10-13 18:31:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2019-10-13 18:31:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 18:31:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 18:31:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2019-10-13 18:31:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2019-10-13 18:31:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 18:31:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 18:31:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-13 18:31:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-13 18:31:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-13 18:31:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2019-10-13 18:31:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-13 18:31:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user_overflow [2019-10-13 18:31:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2019-10-13 18:31:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2019-10-13 18:31:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-13 18:31:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-10-13 18:31:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-10-13 18:31:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-10-13 18:31:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-10-13 18:31:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_12 [2019-10-13 18:31:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_13 [2019-10-13 18:31:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_16 [2019-10-13 18:31:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_19 [2019-10-13 18:31:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_20 [2019-10-13 18:31:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-10-13 18:31:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_17 [2019-10-13 18:31:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_18 [2019-10-13 18:31:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2019-10-13 18:31:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 18:31:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_head_init [2019-10-13 18:31:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2019-10-13 18:31:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2019-10-13 18:31:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_dequeue_14 [2019-10-13 18:31:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2019-10-13 18:31:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-10-13 18:31:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-10-13 18:31:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-10-13 18:31:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2019-10-13 18:31:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2019-10-13 18:31:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2019-10-13 18:31:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2019-10-13 18:31:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2019-10-13 18:31:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_15 [2019-10-13 18:31:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2019-10-13 18:31:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-13 18:31:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-10-13 18:31:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-10-13 18:31:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 18:31:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 18:31:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:31:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2019-10-13 18:31:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-13 18:31:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 18:31:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 18:31:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 18:31:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 18:31:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-13 18:31:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-13 18:31:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-13 18:31:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-13 18:31:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-13 18:31:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 18:31:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-13 18:31:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-13 18:31:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_ppp_channel_ops_2 [2019-10-13 18:31:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_target_type_1 [2019-10-13 18:31:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unthrottle [2019-10-13 18:31:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure tty_termios_baud_rate [2019-10-13 18:31:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure tty_get_baud_rate [2019-10-13 18:31:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure tty_mode_ioctl [2019-10-13 18:31:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure tty_register_ldisc [2019-10-13 18:31:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_ldisc [2019-10-13 18:31:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure n_tty_ioctl_helper [2019-10-13 18:31:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure __tasklet_schedule [2019-10-13 18:31:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2019-10-13 18:31:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2019-10-13 18:31:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2019-10-13 18:31:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2019-10-13 18:31:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_input [2019-10-13 18:31:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_input_error [2019-10-13 18:31:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_register_channel [2019-10-13 18:31:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2019-10-13 18:31:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_index [2019-10-13 18:31:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unit_number [2019-10-13 18:31:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2019-10-13 18:31:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_txmunge [2019-10-13 18:31:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_send [2019-10-13 18:31:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_ioctl [2019-10-13 18:31:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_process [2019-10-13 18:31:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_push [2019-10-13 18:31:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_flush_output [2019-10-13 18:31:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_input [2019-10-13 18:31:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_print_buffer [2019-10-13 18:31:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure sp_get [2019-10-13 18:31:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure sp_put [2019-10-13 18:31:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_open [2019-10-13 18:31:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_close [2019-10-13 18:31:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_hangup [2019-10-13 18:31:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_read [2019-10-13 18:31:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_write [2019-10-13 18:31:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_synctty_ioctl [2019-10-13 18:31:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_poll [2019-10-13 18:31:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_receive [2019-10-13 18:31:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_wakeup [2019-10-13 18:31:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_init [2019-10-13 18:31:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-13 18:31:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_cleanup [2019-10-13 18:31:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 18:31:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 18:31:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:31:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-10-13 18:31:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-13 18:31:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-10-13 18:31:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-10-13 18:31:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-10-13 18:31:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-13 18:31:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-13 18:31:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-13 18:31:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-13 18:31:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-10-13 18:31:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-10-13 18:31:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-10-13 18:31:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-10-13 18:31:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 18:31:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 18:31:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:31:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 18:31:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 18:31:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:31:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-13 18:31:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-13 18:31:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-13 18:31:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-13 18:31:56,395 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-13 18:32:00,743 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:32:00,743 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 18:32:00,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:32:00 BoogieIcfgContainer [2019-10-13 18:32:00,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:32:00,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:32:00,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:32:00,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:32:00,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:31:52" (1/3) ... [2019-10-13 18:32:00,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f96b3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:32:00, skipping insertion in model container [2019-10-13 18:32:00,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:31:55" (2/3) ... [2019-10-13 18:32:00,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f96b3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:32:00, skipping insertion in model container [2019-10-13 18:32:00,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:32:00" (3/3) ... [2019-10-13 18:32:00,761 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 18:32:00,776 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:32:00,795 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:32:00,814 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:32:00,876 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:32:00,877 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:32:00,877 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:32:00,877 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:32:00,877 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:32:00,878 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:32:00,878 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:32:00,878 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:32:00,945 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states. [2019-10-13 18:32:00,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-13 18:32:00,983 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:32:00,984 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, 1, 1, 1] [2019-10-13 18:32:00,988 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:32:00,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:32:00,997 INFO L82 PathProgramCache]: Analyzing trace with hash -99284797, now seen corresponding path program 1 times [2019-10-13 18:32:01,012 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:32:01,012 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523629057] [2019-10-13 18:32:01,013 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:32:01,013 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:32:01,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:32:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:02,030 WARN L191 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-13 18:32:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:02,324 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 18:32:02,325 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523629057] [2019-10-13 18:32:02,325 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:32:02,326 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 18:32:02,326 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794139602] [2019-10-13 18:32:02,331 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 18:32:02,332 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:32:02,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 18:32:02,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 18:32:02,348 INFO L87 Difference]: Start difference. First operand 995 states. Second operand 6 states. [2019-10-13 18:32:02,747 WARN L191 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 18:32:04,404 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2019-10-13 18:32:10,008 WARN L191 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2019-10-13 18:32:27,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:32:27,418 INFO L93 Difference]: Finished difference Result 3440 states and 4804 transitions. [2019-10-13 18:32:27,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 18:32:27,427 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2019-10-13 18:32:27,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:32:27,477 INFO L225 Difference]: With dead ends: 3440 [2019-10-13 18:32:27,477 INFO L226 Difference]: Without dead ends: 2504 [2019-10-13 18:32:27,490 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2019-10-13 18:32:27,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2019-10-13 18:32:27,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 1766. [2019-10-13 18:32:27,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1766 states. [2019-10-13 18:32:27,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 2252 transitions. [2019-10-13 18:32:27,913 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 2252 transitions. Word has length 101 [2019-10-13 18:32:27,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:32:27,914 INFO L462 AbstractCegarLoop]: Abstraction has 1766 states and 2252 transitions. [2019-10-13 18:32:27,914 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 18:32:27,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 2252 transitions. [2019-10-13 18:32:27,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-13 18:32:27,919 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:32:27,920 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:32:27,921 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:32:27,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:32:27,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1734399447, now seen corresponding path program 1 times [2019-10-13 18:32:27,922 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:32:27,922 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002647] [2019-10-13 18:32:27,922 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:32:27,922 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:32:27,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:32:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:28,505 WARN L191 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-13 18:32:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:28,751 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 18:32:28,751 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002647] [2019-10-13 18:32:28,751 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:32:28,752 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 18:32:28,752 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952392790] [2019-10-13 18:32:28,754 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:32:28,754 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:32:28,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:32:28,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:32:28,755 INFO L87 Difference]: Start difference. First operand 1766 states and 2252 transitions. Second operand 9 states. [2019-10-13 18:32:29,133 WARN L191 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 18:32:29,833 WARN L191 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 198