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-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:02:48,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:02:48,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:02:48,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:02:48,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:02:48,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:02:48,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:02:48,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:02:48,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:02:48,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:02:48,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:02:48,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:02:48,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:02:48,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:02:48,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:02:48,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:02:48,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:02:48,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:02:48,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:02:48,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:02:48,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:02:48,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:02:48,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:02:48,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:02:48,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:02:48,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:02:48,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:02:48,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:02:48,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:02:48,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:02:48,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:02:48,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:02:48,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:02:48,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:02:48,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:02:48,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:02:48,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:02:48,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:02:48,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:02:48,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:02:48,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:02:48,376 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 21:02:48,410 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:02:48,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:02:48,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:02:48,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:02:48,412 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:02:48,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:02:48,412 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:02:48,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:02:48,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:02:48,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:02:48,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:02:48,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:02:48,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:02:48,413 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:02:48,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:02:48,414 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:02:48,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:02:48,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:02:48,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:02:48,416 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:02:48,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:02:48,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:02:48,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:02:48,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:02:48,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:02:48,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:02:48,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:02:48,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:02:48,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:02:48,683 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:02:48,695 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:02:48,699 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:02:48,700 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:02:48,700 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:02:48,701 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2019-10-13 21:02:48,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbfa808d9/78f0e93c3f154b92a142b1770cb8501f/FLAG961275ff2 [2019-10-13 21:02:49,586 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:02:49,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2019-10-13 21:02:49,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbfa808d9/78f0e93c3f154b92a142b1770cb8501f/FLAG961275ff2 [2019-10-13 21:02:50,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbfa808d9/78f0e93c3f154b92a142b1770cb8501f [2019-10-13 21:02:50,116 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:02:50,118 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:02:50,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:02:50,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:02:50,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:02:50,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:02:50" (1/1) ... [2019-10-13 21:02:50,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@443541bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:50, skipping insertion in model container [2019-10-13 21:02:50,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:02:50" (1/1) ... [2019-10-13 21:02:50,135 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:02:50,276 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:02:52,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:02:52,161 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:02:52,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:02:52,928 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:02:52,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:52 WrapperNode [2019-10-13 21:02:52,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:02:52,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:02:52,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:02:52,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:02:52,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:52" (1/1) ... [2019-10-13 21:02:52,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:52" (1/1) ... [2019-10-13 21:02:53,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:52" (1/1) ... [2019-10-13 21:02:53,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:52" (1/1) ... [2019-10-13 21:02:53,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:52" (1/1) ... [2019-10-13 21:02:53,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:52" (1/1) ... [2019-10-13 21:02:53,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:52" (1/1) ... [2019-10-13 21:02:53,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:02:53,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:02:53,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:02:53,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:02:53,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:52" (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 21:02:53,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:02:53,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:02:53,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-13 21:02:53,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2019-10-13 21:02:53,325 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2019-10-13 21:02:53,325 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2019-10-13 21:02:53,326 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-10-13 21:02:53,326 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2019-10-13 21:02:53,326 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2019-10-13 21:02:53,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 21:02:53,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-13 21:02:53,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-13 21:02:53,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-13 21:02:53,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-13 21:02:53,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 21:02:53,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-13 21:02:53,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2019-10-13 21:02:53,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-13 21:02:53,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-13 21:02:53,328 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2019-10-13 21:02:53,329 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-13 21:02:53,329 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2019-10-13 21:02:53,329 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2019-10-13 21:02:53,329 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2019-10-13 21:02:53,329 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2019-10-13 21:02:53,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-13 21:02:53,330 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-13 21:02:53,330 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-13 21:02:53,330 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-13 21:02:53,330 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2019-10-13 21:02:53,330 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2019-10-13 21:02:53,330 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2019-10-13 21:02:53,331 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2019-10-13 21:02:53,331 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdevice [2019-10-13 21:02:53,331 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2019-10-13 21:02:53,331 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2019-10-13 21:02:53,331 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_wake_queue [2019-10-13 21:02:53,332 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2019-10-13 21:02:53,332 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2019-10-13 21:02:53,332 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2019-10-13 21:02:53,332 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_queue_stopped [2019-10-13 21:02:53,332 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2019-10-13 21:02:53,333 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2019-10-13 21:02:53,333 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_alloc_bufs [2019-10-13 21:02:53,333 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2019-10-13 21:02:53,333 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_realloc_bufs [2019-10-13 21:02:53,333 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_lock [2019-10-13 21:02:53,333 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2019-10-13 21:02:53,334 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2019-10-13 21:02:53,334 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_encaps [2019-10-13 21:02:53,334 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_write_wakeup [2019-10-13 21:02:53,334 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_tx_timeout [2019-10-13 21:02:53,334 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_xmit [2019-10-13 21:02:53,334 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_close [2019-10-13 21:02:53,335 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_open [2019-10-13 21:02:53,335 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_change_mtu [2019-10-13 21:02:53,335 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_get_stats64 [2019-10-13 21:02:53,335 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_init [2019-10-13 21:02:53,335 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_uninit [2019-10-13 21:02:53,335 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_netdev [2019-10-13 21:02:53,336 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_setup [2019-10-13 21:02:53,336 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_receive_buf [2019-10-13 21:02:53,336 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_sync [2019-10-13 21:02:53,336 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_alloc [2019-10-13 21:02:53,336 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_open [2019-10-13 21:02:53,336 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2019-10-13 21:02:53,337 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_hangup [2019-10-13 21:02:53,337 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_esc [2019-10-13 21:02:53,337 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_unesc [2019-10-13 21:02:53,337 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_esc6 [2019-10-13 21:02:53,337 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_unesc6 [2019-10-13 21:02:53,337 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2019-10-13 21:02:53,338 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_compat_ioctl [2019-10-13 21:02:53,338 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2019-10-13 21:02:53,338 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_init [2019-10-13 21:02:53,338 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_exit [2019-10-13 21:02:53,338 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_outfill [2019-10-13 21:02:53,338 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_keepalive [2019-10-13 21:02:53,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_target_type_3 [2019-10-13 21:02:53,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_net_device_ops_4 [2019-10-13 21:02:53,339 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2019-10-13 21:02:53,339 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_timer_1 [2019-10-13 21:02:53,339 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2019-10-13 21:02:53,339 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_timer_2 [2019-10-13 21:02:53,339 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2019-10-13 21:02:53,339 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_2 [2019-10-13 21:02:53,340 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_2 [2019-10-13 21:02:53,340 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2019-10-13 21:02:53,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:02:53,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync_1 [2019-10-13 21:02:53,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_2 [2019-10-13 21:02:53,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_sl_alloc_bufs_3 [2019-10-13 21:02:53,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdevice_4 [2019-10-13 21:02:53,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync_5 [2019-10-13 21:02:53,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync_6 [2019-10-13 21:02:53,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_7 [2019-10-13 21:02:53,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_8 [2019-10-13 21:02:53,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_9 [2019-10-13 21:02:53,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_10 [2019-10-13 21:02:53,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_11 [2019-10-13 21:02:53,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_12 [2019-10-13 21:02:53,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_13 [2019-10-13 21:02:53,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_14 [2019-10-13 21:02:53,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_15 [2019-10-13 21:02:53,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_16 [2019-10-13 21:02:53,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_17 [2019-10-13 21:02:53,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_slip_open_18 [2019-10-13 21:02:53,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_callback_ret_val [2019-10-13 21:02:53,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2019-10-13 21:02:53,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-13 21:02:53,343 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-13 21:02:53,343 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2019-10-13 21:02:53,344 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_bh [2019-10-13 21:02:53,344 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2019-10-13 21:02:53,344 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_bh [2019-10-13 21:02:53,344 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2019-10-13 21:02:53,344 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_netdev_mqs [2019-10-13 21:02:53,344 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2019-10-13 21:02:53,344 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2019-10-13 21:02:53,345 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2019-10-13 21:02:53,345 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2019-10-13 21:02:53,345 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2019-10-13 21:02:53,345 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2019-10-13 21:02:53,345 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2019-10-13 21:02:53,345 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2019-10-13 21:02:53,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 21:02:53,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 21:02:53,346 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-10-13 21:02:53,346 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2019-10-13 21:02:53,346 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2019-10-13 21:02:53,346 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2019-10-13 21:02:53,347 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_trap [2019-10-13 21:02:53,347 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 21:02:53,347 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdevice [2019-10-13 21:02:53,347 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2019-10-13 21:02:53,347 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2019-10-13 21:02:53,347 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-10-13 21:02:53,348 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_compress [2019-10-13 21:02:53,348 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2019-10-13 21:02:53,348 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_init [2019-10-13 21:02:53,348 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_remember [2019-10-13 21:02:53,348 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_uncompress [2019-10-13 21:02:53,348 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_chars_in_buffer [2019-10-13 21:02:53,348 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2019-10-13 21:02:53,349 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2019-10-13 21:02:53,349 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_mode_ioctl [2019-10-13 21:02:53,349 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_register_ldisc [2019-10-13 21:02:53,349 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_ldisc [2019-10-13 21:02:53,349 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2019-10-13 21:02:53,349 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdevice_queue [2019-10-13 21:02:53,350 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2019-10-13 21:02:53,350 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 21:02:53,350 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 21:02:53,350 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-13 21:02:53,350 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-13 21:02:53,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:02:53,351 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-13 21:02:53,351 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2019-10-13 21:02:53,351 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2019-10-13 21:02:53,351 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-10-13 21:02:53,351 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2019-10-13 21:02:53,351 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2019-10-13 21:02:53,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:02:53,352 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 21:02:53,352 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2019-10-13 21:02:53,352 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-10-13 21:02:53,352 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-10-13 21:02:53,352 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:02:53,352 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 21:02:53,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:02:53,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-13 21:02:53,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 21:02:53,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 21:02:53,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 21:02:53,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 21:02:53,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:02:53,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-13 21:02:53,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-13 21:02:53,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-13 21:02:53,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-13 21:02:53,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-13 21:02:53,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 21:02:53,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-13 21:02:53,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2019-10-13 21:02:53,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-13 21:02:53,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_callback_ret_val [2019-10-13 21:02:53,355 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2019-10-13 21:02:53,355 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2019-10-13 21:02:53,355 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2019-10-13 21:02:53,355 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2019-10-13 21:02:53,355 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-13 21:02:53,356 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2019-10-13 21:02:53,356 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_bh [2019-10-13 21:02:53,356 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2019-10-13 21:02:53,356 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_bh [2019-10-13 21:02:53,356 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-13 21:02:53,356 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2019-10-13 21:02:53,356 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2019-10-13 21:02:53,357 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2019-10-13 21:02:53,357 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2019-10-13 21:02:53,357 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2019-10-13 21:02:53,357 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2019-10-13 21:02:53,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_2 [2019-10-13 21:02:53,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_8 [2019-10-13 21:02:53,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_10 [2019-10-13 21:02:53,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_12 [2019-10-13 21:02:53,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_14 [2019-10-13 21:02:53,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_16 [2019-10-13 21:02:53,358 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2019-10-13 21:02:53,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_7 [2019-10-13 21:02:53,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_9 [2019-10-13 21:02:53,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_11 [2019-10-13 21:02:53,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_13 [2019-10-13 21:02:53,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_15 [2019-10-13 21:02:53,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_17 [2019-10-13 21:02:53,359 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2019-10-13 21:02:53,359 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2019-10-13 21:02:53,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync_1 [2019-10-13 21:02:53,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync_5 [2019-10-13 21:02:53,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync_6 [2019-10-13 21:02:53,360 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 21:02:53,360 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-13 21:02:53,360 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-13 21:02:53,360 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-13 21:02:53,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_target_type_3 [2019-10-13 21:02:53,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_net_device_ops_4 [2019-10-13 21:02:53,361 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2019-10-13 21:02:53,361 INFO L130 BoogieDeclarations]: Found specification of procedure choose_timer_1 [2019-10-13 21:02:53,361 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2019-10-13 21:02:53,361 INFO L130 BoogieDeclarations]: Found specification of procedure choose_timer_2 [2019-10-13 21:02:53,361 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2019-10-13 21:02:53,361 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_2 [2019-10-13 21:02:53,362 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_2 [2019-10-13 21:02:53,362 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2019-10-13 21:02:53,362 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-13 21:02:53,362 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-13 21:02:53,362 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2019-10-13 21:02:53,362 INFO L130 BoogieDeclarations]: Found specification of procedure tty_chars_in_buffer [2019-10-13 21:02:53,362 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2019-10-13 21:02:53,363 INFO L130 BoogieDeclarations]: Found specification of procedure tty_mode_ioctl [2019-10-13 21:02:53,363 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2019-10-13 21:02:53,363 INFO L130 BoogieDeclarations]: Found specification of procedure tty_register_ldisc [2019-10-13 21:02:53,363 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_ldisc [2019-10-13 21:02:53,363 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2019-10-13 21:02:53,363 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-10-13 21:02:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2019-10-13 21:02:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:02:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:02:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2019-10-13 21:02:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2019-10-13 21:02:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2019-10-13 21:02:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2019-10-13 21:02:53,365 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2019-10-13 21:02:53,365 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdevice [2019-10-13 21:02:53,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdevice_4 [2019-10-13 21:02:53,365 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdevice_queue [2019-10-13 21:02:53,365 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdevice [2019-10-13 21:02:53,365 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2019-10-13 21:02:53,365 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_trap [2019-10-13 21:02:53,366 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2019-10-13 21:02:53,366 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2019-10-13 21:02:53,366 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2019-10-13 21:02:53,366 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2019-10-13 21:02:53,366 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2019-10-13 21:02:53,366 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2019-10-13 21:02:53,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:02:53,367 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2019-10-13 21:02:53,367 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_queue_stopped [2019-10-13 21:02:53,367 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2019-10-13 21:02:53,367 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2019-10-13 21:02:53,367 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2019-10-13 21:02:53,367 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2019-10-13 21:02:53,367 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_netdev_mqs [2019-10-13 21:02:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2019-10-13 21:02:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2019-10-13 21:02:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2019-10-13 21:02:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_init [2019-10-13 21:02:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2019-10-13 21:02:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_compress [2019-10-13 21:02:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_uncompress [2019-10-13 21:02:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_remember [2019-10-13 21:02:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure slip_esc [2019-10-13 21:02:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure slip_unesc [2019-10-13 21:02:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure slip_esc6 [2019-10-13 21:02:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure slip_unesc6 [2019-10-13 21:02:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure sl_keepalive [2019-10-13 21:02:53,370 INFO L130 BoogieDeclarations]: Found specification of procedure sl_outfill [2019-10-13 21:02:53,370 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2019-10-13 21:02:53,370 INFO L130 BoogieDeclarations]: Found specification of procedure sl_alloc_bufs [2019-10-13 21:02:53,370 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_sl_alloc_bufs_3 [2019-10-13 21:02:53,370 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2019-10-13 21:02:53,370 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-13 21:02:53,370 INFO L130 BoogieDeclarations]: Found specification of procedure sl_realloc_bufs [2019-10-13 21:02:53,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-13 21:02:53,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:02:53,371 INFO L130 BoogieDeclarations]: Found specification of procedure sl_lock [2019-10-13 21:02:53,371 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2019-10-13 21:02:53,371 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2019-10-13 21:02:53,371 INFO L130 BoogieDeclarations]: Found specification of procedure sl_encaps [2019-10-13 21:02:53,371 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-13 21:02:53,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:02:53,372 INFO L130 BoogieDeclarations]: Found specification of procedure slip_write_wakeup [2019-10-13 21:02:53,372 INFO L130 BoogieDeclarations]: Found specification of procedure sl_tx_timeout [2019-10-13 21:02:53,372 INFO L130 BoogieDeclarations]: Found specification of procedure sl_xmit [2019-10-13 21:02:53,372 INFO L130 BoogieDeclarations]: Found specification of procedure sl_close [2019-10-13 21:02:53,372 INFO L130 BoogieDeclarations]: Found specification of procedure sl_open [2019-10-13 21:02:53,372 INFO L130 BoogieDeclarations]: Found specification of procedure sl_change_mtu [2019-10-13 21:02:53,373 INFO L130 BoogieDeclarations]: Found specification of procedure sl_get_stats64 [2019-10-13 21:02:53,373 INFO L130 BoogieDeclarations]: Found specification of procedure sl_init [2019-10-13 21:02:53,373 INFO L130 BoogieDeclarations]: Found specification of procedure sl_uninit [2019-10-13 21:02:53,373 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_netdev [2019-10-13 21:02:53,373 INFO L130 BoogieDeclarations]: Found specification of procedure sl_setup [2019-10-13 21:02:53,373 INFO L130 BoogieDeclarations]: Found specification of procedure slip_receive_buf [2019-10-13 21:02:53,373 INFO L130 BoogieDeclarations]: Found specification of procedure sl_sync [2019-10-13 21:02:53,373 INFO L130 BoogieDeclarations]: Found specification of procedure sl_alloc [2019-10-13 21:02:53,374 INFO L130 BoogieDeclarations]: Found specification of procedure slip_open [2019-10-13 21:02:53,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_slip_open_18 [2019-10-13 21:02:53,374 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2019-10-13 21:02:53,374 INFO L130 BoogieDeclarations]: Found specification of procedure slip_hangup [2019-10-13 21:02:53,374 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2019-10-13 21:02:53,374 INFO L130 BoogieDeclarations]: Found specification of procedure slip_compat_ioctl [2019-10-13 21:02:53,374 INFO L130 BoogieDeclarations]: Found specification of procedure slip_init [2019-10-13 21:02:53,375 INFO L130 BoogieDeclarations]: Found specification of procedure slip_exit [2019-10-13 21:02:53,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 21:02:53,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 21:02:53,375 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2019-10-13 21:02:53,375 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:02:53,375 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 21:02:53,375 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:02:53,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:02:53,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 21:02:53,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:02:53,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:02:53,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-13 21:02:53,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-13 21:02:53,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-13 21:02:53,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-13 21:02:54,684 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-13 21:02:57,741 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:02:57,742 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 21:02:57,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:02:57 BoogieIcfgContainer [2019-10-13 21:02:57,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:02:57,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:02:57,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:02:57,750 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:02:57,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:02:50" (1/3) ... [2019-10-13 21:02:57,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cf5741a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:02:57, skipping insertion in model container [2019-10-13 21:02:57,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:52" (2/3) ... [2019-10-13 21:02:57,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cf5741a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:02:57, skipping insertion in model container [2019-10-13 21:02:57,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:02:57" (3/3) ... [2019-10-13 21:02:57,755 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2019-10-13 21:02:57,765 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:02:57,779 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:02:57,791 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:02:57,833 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:02:57,833 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:02:57,833 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:02:57,833 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:02:57,833 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:02:57,834 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:02:57,834 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:02:57,834 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:02:57,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states. [2019-10-13 21:02:57,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-13 21:02:57,912 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:02:57,915 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:57,917 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:02:57,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:02:57,923 INFO L82 PathProgramCache]: Analyzing trace with hash -2145269375, now seen corresponding path program 1 times [2019-10-13 21:02:57,933 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:02:57,933 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63291351] [2019-10-13 21:02:57,934 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:57,934 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:57,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:02:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:02:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-13 21:02:58,529 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63291351] [2019-10-13 21:02:58,530 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:02:58,530 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:02:58,530 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633607247] [2019-10-13 21:02:58,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:02:58,537 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:02:58,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:02:58,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:02:58,555 INFO L87 Difference]: Start difference. First operand 1432 states. Second operand 3 states. [2019-10-13 21:02:58,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:02:58,871 INFO L93 Difference]: Finished difference Result 3573 states and 4844 transitions. [2019-10-13 21:02:58,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:02:58,873 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2019-10-13 21:02:58,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:02:58,921 INFO L225 Difference]: With dead ends: 3573 [2019-10-13 21:02:58,921 INFO L226 Difference]: Without dead ends: 2064 [2019-10-13 21:02:58,936 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:02:58,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2064 states. [2019-10-13 21:02:59,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2064 to 2064. [2019-10-13 21:02:59,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2064 states. [2019-10-13 21:02:59,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 2780 transitions. [2019-10-13 21:02:59,169 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 2780 transitions. Word has length 82 [2019-10-13 21:02:59,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:02:59,170 INFO L462 AbstractCegarLoop]: Abstraction has 2064 states and 2780 transitions. [2019-10-13 21:02:59,173 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:02:59,173 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 2780 transitions. [2019-10-13 21:02:59,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-13 21:02:59,190 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:02:59,191 INFO L380 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2019-10-13 21:02:59,191 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:02:59,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:02:59,191 INFO L82 PathProgramCache]: Analyzing trace with hash -361283824, now seen corresponding path program 1 times [2019-10-13 21:02:59,192 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:02:59,192 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883902490] [2019-10-13 21:02:59,192 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:59,192 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:59,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:02:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:02:59,742 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2019-10-13 21:02:59,742 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883902490] [2019-10-13 21:02:59,743 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:02:59,743 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:02:59,744 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998183121] [2019-10-13 21:02:59,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:02:59,747 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:02:59,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:02:59,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:02:59,748 INFO L87 Difference]: Start difference. First operand 2064 states and 2780 transitions. Second operand 5 states. [2019-10-13 21:03:05,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:05,302 INFO L93 Difference]: Finished difference Result 4095 states and 5522 transitions. [2019-10-13 21:03:05,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:03:05,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2019-10-13 21:03:05,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:05,320 INFO L225 Difference]: With dead ends: 4095 [2019-10-13 21:03:05,321 INFO L226 Difference]: Without dead ends: 2064 [2019-10-13 21:03:05,331 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:03:05,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2064 states. [2019-10-13 21:03:05,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2064 to 2064. [2019-10-13 21:03:05,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2064 states. [2019-10-13 21:03:05,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 2778 transitions. [2019-10-13 21:03:05,456 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 2778 transitions. Word has length 142 [2019-10-13 21:03:05,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:05,458 INFO L462 AbstractCegarLoop]: Abstraction has 2064 states and 2778 transitions. [2019-10-13 21:03:05,458 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:03:05,458 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 2778 transitions. [2019-10-13 21:03:05,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-13 21:03:05,466 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:05,467 INFO L380 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2019-10-13 21:03:05,467 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:05,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:05,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1503786290, now seen corresponding path program 1 times [2019-10-13 21:03:05,468 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:05,468 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49592926] [2019-10-13 21:03:05,468 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:05,468 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:05,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:05,843 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2019-10-13 21:03:05,844 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49592926] [2019-10-13 21:03:05,844 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:03:05,844 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 21:03:05,845 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136275841] [2019-10-13 21:03:05,847 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 21:03:05,847 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:05,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 21:03:05,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:03:05,849 INFO L87 Difference]: Start difference. First operand 2064 states and 2778 transitions. Second operand 10 states. [2019-10-13 21:03:06,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:06,092 INFO L93 Difference]: Finished difference Result 4105 states and 5526 transitions. [2019-10-13 21:03:06,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:03:06,093 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 142 [2019-10-13 21:03:06,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:06,109 INFO L225 Difference]: With dead ends: 4105 [2019-10-13 21:03:06,109 INFO L226 Difference]: Without dead ends: 2066 [2019-10-13 21:03:06,119 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:03:06,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2019-10-13 21:03:06,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 2064. [2019-10-13 21:03:06,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2064 states. [2019-10-13 21:03:06,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 2776 transitions. [2019-10-13 21:03:06,249 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 2776 transitions. Word has length 142 [2019-10-13 21:03:06,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:06,251 INFO L462 AbstractCegarLoop]: Abstraction has 2064 states and 2776 transitions. [2019-10-13 21:03:06,251 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 21:03:06,251 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 2776 transitions. [2019-10-13 21:03:06,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 21:03:06,262 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:06,262 INFO L380 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2019-10-13 21:03:06,262 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:06,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:06,263 INFO L82 PathProgramCache]: Analyzing trace with hash -231756230, now seen corresponding path program 1 times [2019-10-13 21:03:06,263 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:06,264 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838666103] [2019-10-13 21:03:06,264 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:06,264 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:06,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:06,560 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2019-10-13 21:03:06,561 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838666103] [2019-10-13 21:03:06,562 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:03:06,562 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:03:06,562 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006146313] [2019-10-13 21:03:06,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:03:06,565 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:06,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:03:06,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:03:06,566 INFO L87 Difference]: Start difference. First operand 2064 states and 2776 transitions. Second operand 7 states. [2019-10-13 21:03:06,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:06,710 INFO L93 Difference]: Finished difference Result 2078 states and 2790 transitions. [2019-10-13 21:03:06,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:03:06,711 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2019-10-13 21:03:06,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:06,724 INFO L225 Difference]: With dead ends: 2078 [2019-10-13 21:03:06,725 INFO L226 Difference]: Without dead ends: 2075 [2019-10-13 21:03:06,727 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:03:06,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2019-10-13 21:03:06,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2072. [2019-10-13 21:03:06,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2072 states. [2019-10-13 21:03:06,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2784 transitions. [2019-10-13 21:03:06,826 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2784 transitions. Word has length 149 [2019-10-13 21:03:06,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:06,827 INFO L462 AbstractCegarLoop]: Abstraction has 2072 states and 2784 transitions. [2019-10-13 21:03:06,827 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:03:06,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2784 transitions. [2019-10-13 21:03:06,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-13 21:03:06,836 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:06,836 INFO L380 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2019-10-13 21:03:06,837 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:06,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:06,837 INFO L82 PathProgramCache]: Analyzing trace with hash 275213783, now seen corresponding path program 1 times [2019-10-13 21:03:06,838 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:06,838 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738773378] [2019-10-13 21:03:06,841 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:06,842 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:06,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2019-10-13 21:03:07,032 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738773378] [2019-10-13 21:03:07,032 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:03:07,032 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:03:07,032 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077174967] [2019-10-13 21:03:07,033 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:03:07,033 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:07,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:03:07,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:03:07,034 INFO L87 Difference]: Start difference. First operand 2072 states and 2784 transitions. Second operand 8 states. [2019-10-13 21:03:07,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:07,230 INFO L93 Difference]: Finished difference Result 2106 states and 2824 transitions. [2019-10-13 21:03:07,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:03:07,231 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2019-10-13 21:03:07,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:07,246 INFO L225 Difference]: With dead ends: 2106 [2019-10-13 21:03:07,247 INFO L226 Difference]: Without dead ends: 2103 [2019-10-13 21:03:07,249 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:03:07,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2103 states. [2019-10-13 21:03:07,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2103 to 2074. [2019-10-13 21:03:07,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2074 states. [2019-10-13 21:03:07,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 2787 transitions. [2019-10-13 21:03:07,351 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 2787 transitions. Word has length 165 [2019-10-13 21:03:07,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:07,351 INFO L462 AbstractCegarLoop]: Abstraction has 2074 states and 2787 transitions. [2019-10-13 21:03:07,352 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:03:07,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 2787 transitions. [2019-10-13 21:03:07,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-10-13 21:03:07,364 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:07,364 INFO L380 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:03:07,365 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:07,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:07,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1881606121, now seen corresponding path program 1 times [2019-10-13 21:03:07,365 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:07,366 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872823276] [2019-10-13 21:03:07,366 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:07,366 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:07,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:07,627 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-10-13 21:03:07,627 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872823276] [2019-10-13 21:03:07,628 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:03:07,628 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:03:07,632 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24804211] [2019-10-13 21:03:07,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:03:07,633 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:07,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:03:07,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:03:07,634 INFO L87 Difference]: Start difference. First operand 2074 states and 2787 transitions. Second operand 4 states. [2019-10-13 21:03:10,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:10,047 INFO L93 Difference]: Finished difference Result 4794 states and 6439 transitions. [2019-10-13 21:03:10,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:03:10,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 199 [2019-10-13 21:03:10,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:10,068 INFO L225 Difference]: With dead ends: 4794 [2019-10-13 21:03:10,068 INFO L226 Difference]: Without dead ends: 2753 [2019-10-13 21:03:10,078 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:03:10,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2019-10-13 21:03:10,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 2752. [2019-10-13 21:03:10,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2752 states. [2019-10-13 21:03:10,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 3686 transitions. [2019-10-13 21:03:10,290 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 3686 transitions. Word has length 199 [2019-10-13 21:03:10,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:10,291 INFO L462 AbstractCegarLoop]: Abstraction has 2752 states and 3686 transitions. [2019-10-13 21:03:10,291 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:03:10,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 3686 transitions. [2019-10-13 21:03:10,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-13 21:03:10,308 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:10,309 INFO L380 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:03:10,309 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:10,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:10,310 INFO L82 PathProgramCache]: Analyzing trace with hash -940678436, now seen corresponding path program 1 times [2019-10-13 21:03:10,310 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:10,310 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751218347] [2019-10-13 21:03:10,311 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:10,311 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:10,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:10,503 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2019-10-13 21:03:10,504 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751218347] [2019-10-13 21:03:10,504 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:03:10,504 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:03:10,505 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834319186] [2019-10-13 21:03:10,505 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:03:10,505 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:10,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:03:10,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:03:10,506 INFO L87 Difference]: Start difference. First operand 2752 states and 3686 transitions. Second operand 3 states. [2019-10-13 21:03:10,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:10,628 INFO L93 Difference]: Finished difference Result 5474 states and 7385 transitions. [2019-10-13 21:03:10,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:03:10,629 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2019-10-13 21:03:10,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:10,645 INFO L225 Difference]: With dead ends: 5474 [2019-10-13 21:03:10,645 INFO L226 Difference]: Without dead ends: 2755 [2019-10-13 21:03:10,656 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:03:10,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2019-10-13 21:03:10,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 2752. [2019-10-13 21:03:10,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2752 states. [2019-10-13 21:03:10,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 3677 transitions. [2019-10-13 21:03:10,783 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 3677 transitions. Word has length 201 [2019-10-13 21:03:10,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:10,783 INFO L462 AbstractCegarLoop]: Abstraction has 2752 states and 3677 transitions. [2019-10-13 21:03:10,784 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:03:10,784 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 3677 transitions. [2019-10-13 21:03:10,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 21:03:10,797 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:10,798 INFO L380 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:03:10,798 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:10,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:10,798 INFO L82 PathProgramCache]: Analyzing trace with hash 347850975, now seen corresponding path program 1 times [2019-10-13 21:03:10,799 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:10,799 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112202633] [2019-10-13 21:03:10,799 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:10,799 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:10,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:11,155 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-10-13 21:03:11,156 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112202633] [2019-10-13 21:03:11,156 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:03:11,156 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 21:03:11,156 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908596141] [2019-10-13 21:03:11,157 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:03:11,158 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:11,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:03:11,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:03:11,159 INFO L87 Difference]: Start difference. First operand 2752 states and 3677 transitions. Second operand 11 states. [2019-10-13 21:03:11,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:11,553 INFO L93 Difference]: Finished difference Result 4832 states and 6471 transitions. [2019-10-13 21:03:11,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-13 21:03:11,555 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 204 [2019-10-13 21:03:11,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:11,622 INFO L225 Difference]: With dead ends: 4832 [2019-10-13 21:03:11,622 INFO L226 Difference]: Without dead ends: 2777 [2019-10-13 21:03:11,629 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:03:11,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2777 states. [2019-10-13 21:03:11,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2777 to 2776. [2019-10-13 21:03:11,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2776 states. [2019-10-13 21:03:11,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2776 states to 2776 states and 3710 transitions. [2019-10-13 21:03:11,760 INFO L78 Accepts]: Start accepts. Automaton has 2776 states and 3710 transitions. Word has length 204 [2019-10-13 21:03:11,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:11,761 INFO L462 AbstractCegarLoop]: Abstraction has 2776 states and 3710 transitions. [2019-10-13 21:03:11,761 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:03:11,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2776 states and 3710 transitions. [2019-10-13 21:03:11,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 21:03:11,778 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:11,778 INFO L380 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:03:11,778 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:11,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:11,779 INFO L82 PathProgramCache]: Analyzing trace with hash 492260670, now seen corresponding path program 1 times [2019-10-13 21:03:11,779 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:11,779 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913547406] [2019-10-13 21:03:11,779 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:11,780 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:11,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:12,031 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2019-10-13 21:03:12,032 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913547406] [2019-10-13 21:03:12,032 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:03:12,032 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:03:12,032 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505918690] [2019-10-13 21:03:12,033 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:03:12,033 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:12,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:03:12,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:03:12,034 INFO L87 Difference]: Start difference. First operand 2776 states and 3710 transitions. Second operand 5 states. [2019-10-13 21:03:12,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:12,188 INFO L93 Difference]: Finished difference Result 4841 states and 6485 transitions. [2019-10-13 21:03:12,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:03:12,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2019-10-13 21:03:12,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:12,208 INFO L225 Difference]: With dead ends: 4841 [2019-10-13 21:03:12,208 INFO L226 Difference]: Without dead ends: 2784 [2019-10-13 21:03:12,217 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:03:12,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2019-10-13 21:03:12,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 2780. [2019-10-13 21:03:12,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2780 states. [2019-10-13 21:03:12,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 3714 transitions. [2019-10-13 21:03:12,344 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 3714 transitions. Word has length 204 [2019-10-13 21:03:12,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:12,345 INFO L462 AbstractCegarLoop]: Abstraction has 2780 states and 3714 transitions. [2019-10-13 21:03:12,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:03:12,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 3714 transitions. [2019-10-13 21:03:12,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-10-13 21:03:12,361 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:12,362 INFO L380 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:12,362 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:12,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:12,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1372064424, now seen corresponding path program 1 times [2019-10-13 21:03:12,363 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:12,363 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394800065] [2019-10-13 21:03:12,363 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:12,363 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:12,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:12,561 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2019-10-13 21:03:12,561 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394800065] [2019-10-13 21:03:12,562 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:03:12,562 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:03:12,562 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614842676] [2019-10-13 21:03:12,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:03:12,563 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:12,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:03:12,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:03:12,563 INFO L87 Difference]: Start difference. First operand 2780 states and 3714 transitions. Second operand 3 states. [2019-10-13 21:03:12,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:12,781 INFO L93 Difference]: Finished difference Result 4844 states and 6490 transitions. [2019-10-13 21:03:12,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:03:12,783 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 231 [2019-10-13 21:03:12,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:12,801 INFO L225 Difference]: With dead ends: 4844 [2019-10-13 21:03:12,801 INFO L226 Difference]: Without dead ends: 2783 [2019-10-13 21:03:12,811 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:03:12,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2019-10-13 21:03:12,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2781. [2019-10-13 21:03:12,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2781 states. [2019-10-13 21:03:12,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2781 states to 2781 states and 3715 transitions. [2019-10-13 21:03:12,953 INFO L78 Accepts]: Start accepts. Automaton has 2781 states and 3715 transitions. Word has length 231 [2019-10-13 21:03:12,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:12,953 INFO L462 AbstractCegarLoop]: Abstraction has 2781 states and 3715 transitions. [2019-10-13 21:03:12,954 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:03:12,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2781 states and 3715 transitions. [2019-10-13 21:03:12,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-10-13 21:03:12,968 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:12,969 INFO L380 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:12,969 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:12,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:12,969 INFO L82 PathProgramCache]: Analyzing trace with hash 348675351, now seen corresponding path program 1 times [2019-10-13 21:03:12,970 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:12,970 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370725025] [2019-10-13 21:03:12,970 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:12,970 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:12,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2019-10-13 21:03:13,262 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370725025] [2019-10-13 21:03:13,262 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:03:13,262 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:03:13,262 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234161838] [2019-10-13 21:03:13,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:03:13,263 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:13,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:03:13,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:03:13,264 INFO L87 Difference]: Start difference. First operand 2781 states and 3715 transitions. Second operand 3 states. [2019-10-13 21:03:13,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:13,408 INFO L93 Difference]: Finished difference Result 4834 states and 6477 transitions. [2019-10-13 21:03:13,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:03:13,410 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2019-10-13 21:03:13,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:13,427 INFO L225 Difference]: With dead ends: 4834 [2019-10-13 21:03:13,427 INFO L226 Difference]: Without dead ends: 2772 [2019-10-13 21:03:13,437 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:03:13,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2019-10-13 21:03:13,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 2767. [2019-10-13 21:03:13,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2767 states. [2019-10-13 21:03:13,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2767 states to 2767 states and 3696 transitions. [2019-10-13 21:03:13,551 INFO L78 Accepts]: Start accepts. Automaton has 2767 states and 3696 transitions. Word has length 233 [2019-10-13 21:03:13,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:13,552 INFO L462 AbstractCegarLoop]: Abstraction has 2767 states and 3696 transitions. [2019-10-13 21:03:13,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:03:13,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2767 states and 3696 transitions. [2019-10-13 21:03:13,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2019-10-13 21:03:13,567 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:13,567 INFO L380 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:13,567 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:13,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:13,568 INFO L82 PathProgramCache]: Analyzing trace with hash 799570743, now seen corresponding path program 1 times [2019-10-13 21:03:13,568 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:13,569 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111214905] [2019-10-13 21:03:13,569 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:13,569 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:13,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:13,909 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2019-10-13 21:03:13,910 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111214905] [2019-10-13 21:03:13,910 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:03:13,911 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:03:13,911 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993980689] [2019-10-13 21:03:13,912 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:03:13,912 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:13,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:03:13,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:03:13,913 INFO L87 Difference]: Start difference. First operand 2767 states and 3696 transitions. Second operand 6 states.