java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 02:20:46,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 02:20:46,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 02:20:46,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 02:20:46,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 02:20:46,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 02:20:46,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 02:20:46,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 02:20:46,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 02:20:46,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 02:20:46,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 02:20:46,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 02:20:46,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 02:20:46,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 02:20:46,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 02:20:46,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 02:20:46,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 02:20:46,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 02:20:46,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 02:20:46,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 02:20:46,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 02:20:46,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 02:20:46,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 02:20:46,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 02:20:46,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 02:20:46,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 02:20:46,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 02:20:46,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 02:20:46,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 02:20:46,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 02:20:46,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 02:20:46,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 02:20:46,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 02:20:46,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 02:20:46,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 02:20:46,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 02:20:46,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 02:20:46,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 02:20:46,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 02:20:46,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 02:20:46,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 02:20:46,638 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 [2019-10-15 02:20:46,658 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 02:20:46,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 02:20:46,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 02:20:46,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 02:20:46,661 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 02:20:46,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 02:20:46,661 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 02:20:46,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 02:20:46,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 02:20:46,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 02:20:46,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 02:20:46,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 02:20:46,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 02:20:46,664 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 02:20:46,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 02:20:46,665 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 02:20:46,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 02:20:46,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 02:20:46,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 02:20:46,666 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 02:20:46,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 02:20:46,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:20:46,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 02:20:46,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 02:20:46,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 02:20:46,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 02:20:46,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 02:20:46,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 02:20:46,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 02:20:46,958 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 02:20:46,974 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 02:20:46,979 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 02:20:46,980 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 02:20:46,981 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 02:20:46,982 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2019-10-15 02:20:47,068 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caf4f74c7/c0be0d3ee9d74648908726907bd57bba/FLAGeaa8bd665 [2019-10-15 02:20:47,875 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 02:20:47,876 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2019-10-15 02:20:47,920 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caf4f74c7/c0be0d3ee9d74648908726907bd57bba/FLAGeaa8bd665 [2019-10-15 02:20:48,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caf4f74c7/c0be0d3ee9d74648908726907bd57bba [2019-10-15 02:20:48,414 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 02:20:48,416 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 02:20:48,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 02:20:48,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 02:20:48,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 02:20:48,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:20:48" (1/1) ... [2019-10-15 02:20:48,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ebb8931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:48, skipping insertion in model container [2019-10-15 02:20:48,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:20:48" (1/1) ... [2019-10-15 02:20:48,433 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 02:20:48,569 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 02:20:50,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:20:50,274 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 02:20:50,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:20:50,951 INFO L192 MainTranslator]: Completed translation [2019-10-15 02:20:50,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:50 WrapperNode [2019-10-15 02:20:50,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 02:20:50,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 02:20:50,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 02:20:50,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 02:20:50,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:50" (1/1) ... [2019-10-15 02:20:50,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:50" (1/1) ... [2019-10-15 02:20:51,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:50" (1/1) ... [2019-10-15 02:20:51,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:50" (1/1) ... [2019-10-15 02:20:51,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:50" (1/1) ... [2019-10-15 02:20:51,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:50" (1/1) ... [2019-10-15 02:20:51,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:50" (1/1) ... [2019-10-15 02:20:51,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 02:20:51,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 02:20:51,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 02:20:51,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 02:20:51,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:50" (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 [2019-10-15 02:20:51,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 02:20:51,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 02:20:51,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-15 02:20:51,319 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2019-10-15 02:20:51,319 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2019-10-15 02:20:51,319 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-10-15 02:20:51,319 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2019-10-15 02:20:51,320 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2019-10-15 02:20:51,320 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-15 02:20:51,320 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2019-10-15 02:20:51,320 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2019-10-15 02:20:51,320 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2019-10-15 02:20:51,321 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2019-10-15 02:20:51,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-15 02:20:51,321 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-15 02:20:51,321 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2019-10-15 02:20:51,321 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2019-10-15 02:20:51,322 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-15 02:20:51,322 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2019-10-15 02:20:51,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-15 02:20:51,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-15 02:20:51,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-15 02:20:51,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-15 02:20:51,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-15 02:20:51,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-15 02:20:51,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-15 02:20:51,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-15 02:20:51,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-15 02:20:51,324 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2019-10-15 02:20:51,324 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2019-10-15 02:20:51,324 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2019-10-15 02:20:51,324 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2019-10-15 02:20:51,324 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2019-10-15 02:20:51,324 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_wake_queue [2019-10-15 02:20:51,325 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2019-10-15 02:20:51,325 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2019-10-15 02:20:51,325 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2019-10-15 02:20:51,325 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_queue_stopped [2019-10-15 02:20:51,325 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2019-10-15 02:20:51,325 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2019-10-15 02:20:51,326 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2019-10-15 02:20:51,326 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_alloc [2019-10-15 02:20:51,326 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_free [2019-10-15 02:20:51,326 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_change_mtu [2019-10-15 02:20:51,326 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_lock [2019-10-15 02:20:51,326 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_unlock [2019-10-15 02:20:51,326 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_bump [2019-10-15 02:20:51,327 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_encaps [2019-10-15 02:20:51,327 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_write_wakeup [2019-10-15 02:20:51,327 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_timeout [2019-10-15 02:20:51,327 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_xmit [2019-10-15 02:20:51,327 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_data_indication [2019-10-15 02:20:51,327 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_data_transmit [2019-10-15 02:20:51,328 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_connected [2019-10-15 02:20:51,328 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_disconnected [2019-10-15 02:20:51,328 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_open [2019-10-15 02:20:51,328 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_close [2019-10-15 02:20:51,328 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_receive_buf [2019-10-15 02:20:51,328 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_open_tty [2019-10-15 02:20:51,328 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_close_tty [2019-10-15 02:20:51,329 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_esc [2019-10-15 02:20:51,329 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_unesc [2019-10-15 02:20:51,329 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_ioctl [2019-10-15 02:20:51,329 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_compat_ioctl [2019-10-15 02:20:51,329 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_open_dev [2019-10-15 02:20:51,329 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_setup [2019-10-15 02:20:51,330 INFO L138 BoogieDeclarations]: Found implementation of procedure init_x25_asy [2019-10-15 02:20:51,330 INFO L138 BoogieDeclarations]: Found implementation of procedure exit_x25_asy [2019-10-15 02:20:51,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_target_type_1 [2019-10-15 02:20:51,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_lapb_register_struct_3 [2019-10-15 02:20:51,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_net_device_ops_2 [2019-10-15 02:20:51,330 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 02:20:51,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-10-15 02:20:51,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-10-15 02:20:51,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-10-15 02:20:51,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-10-15 02:20:51,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-10-15 02:20:51,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_12 [2019-10-15 02:20:51,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev_13 [2019-10-15 02:20:51,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_14 [2019-10-15 02:20:51,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_15 [2019-10-15 02:20:51,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_16 [2019-10-15 02:20:51,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_17 [2019-10-15 02:20:51,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_18 [2019-10-15 02:20:51,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_19 [2019-10-15 02:20:51,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_20 [2019-10-15 02:20:51,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_21 [2019-10-15 02:20:51,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_22 [2019-10-15 02:20:51,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_24 [2019-10-15 02:20:51,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_26 [2019-10-15 02:20:51,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev_27 [2019-10-15 02:20:51,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev_28 [2019-10-15 02:20:51,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-10-15 02:20:51,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-15 02:20:51,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-10-15 02:20:51,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-10-15 02:20:51,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-10-15 02:20:51,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-15 02:20:51,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-15 02:20:51,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-15 02:20:51,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-15 02:20:51,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-10-15 02:20:51,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-15 02:20:51,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-10-15 02:20:51,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-10-15 02:20:51,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-10-15 02:20:51,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-10-15 02:20:51,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-10-15 02:20:51,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-15 02:20:51,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user_overflow [2019-10-15 02:20:51,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2019-10-15 02:20:51,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-15 02:20:51,337 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-15 02:20:51,337 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2019-10-15 02:20:51,337 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_bh [2019-10-15 02:20:51,337 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2019-10-15 02:20:51,337 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_bh [2019-10-15 02:20:51,337 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_netdev_mqs [2019-10-15 02:20:51,338 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2019-10-15 02:20:51,338 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2019-10-15 02:20:51,338 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2019-10-15 02:20:51,338 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2019-10-15 02:20:51,338 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2019-10-15 02:20:51,338 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2019-10-15 02:20:51,338 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2019-10-15 02:20:51,339 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2019-10-15 02:20:51,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ndo_init_2 [2019-10-15 02:20:51,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ndo_uninit_2 [2019-10-15 02:20:51,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_3 [2019-10-15 02:20:51,339 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-10-15 02:20:51,339 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2019-10-15 02:20:51,340 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2019-10-15 02:20:51,340 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-15 02:20:51,340 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2019-10-15 02:20:51,340 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2019-10-15 02:20:51,341 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2019-10-15 02:20:51,341 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-10-15 02:20:51,341 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-10-15 02:20:51,341 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-10-15 02:20:51,341 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_chars_in_buffer [2019-10-15 02:20:51,341 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_driver_flush_buffer [2019-10-15 02:20:51,341 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2019-10-15 02:20:51,342 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_ldisc_flush [2019-10-15 02:20:51,342 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_mode_ioctl [2019-10-15 02:20:51,342 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_register_ldisc [2019-10-15 02:20:51,342 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_ldisc [2019-10-15 02:20:51,342 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2019-10-15 02:20:51,342 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2019-10-15 02:20:51,343 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-15 02:20:51,343 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-15 02:20:51,343 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-15 02:20:51,343 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-15 02:20:51,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 02:20:51,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-15 02:20:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2019-10-15 02:20:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2019-10-15 02:20:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-10-15 02:20:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2019-10-15 02:20:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2019-10-15 02:20:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 02:20:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-15 02:20:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-10-15 02:20:51,345 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-10-15 02:20:51,345 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2019-10-15 02:20:51,345 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2019-10-15 02:20:51,345 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2019-10-15 02:20:51,345 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-15 02:20:51,345 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2019-10-15 02:20:51,345 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_bh [2019-10-15 02:20:51,346 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2019-10-15 02:20:51,346 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_bh [2019-10-15 02:20:51,346 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-15 02:20:51,346 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2019-10-15 02:20:51,346 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2019-10-15 02:20:51,346 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2019-10-15 02:20:51,346 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2019-10-15 02:20:51,346 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-15 02:20:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-15 02:20:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-15 02:20:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-15 02:20:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2019-10-15 02:20:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2019-10-15 02:20:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-15 02:20:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2019-10-15 02:20:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-15 02:20:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-10-15 02:20:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-10-15 02:20:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-10-15 02:20:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-10-15 02:20:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_15 [2019-10-15 02:20:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_17 [2019-10-15 02:20:51,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_18 [2019-10-15 02:20:51,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_19 [2019-10-15 02:20:51,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_20 [2019-10-15 02:20:51,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_22 [2019-10-15 02:20:51,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-10-15 02:20:51,349 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-10-15 02:20:51,349 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-10-15 02:20:51,350 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-10-15 02:20:51,350 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2019-10-15 02:20:51,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 02:20:51,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 02:20:51,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_14 [2019-10-15 02:20:51,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-10-15 02:20:51,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-10-15 02:20:51,351 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-10-15 02:20:51,351 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 02:20:51,351 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 02:20:51,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 02:20:51,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-15 02:20:51,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-15 02:20:51,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 02:20:51,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 02:20:51,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 02:20:51,352 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-15 02:20:51,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-15 02:20:51,352 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-15 02:20:51,352 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-15 02:20:51,352 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-15 02:20:51,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-15 02:20:51,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-15 02:20:51,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-15 02:20:51,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_target_type_1 [2019-10-15 02:20:51,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_lapb_register_struct_3 [2019-10-15 02:20:51,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_net_device_ops_2 [2019-10-15 02:20:51,353 INFO L130 BoogieDeclarations]: Found specification of procedure tty_chars_in_buffer [2019-10-15 02:20:51,354 INFO L130 BoogieDeclarations]: Found specification of procedure tty_driver_flush_buffer [2019-10-15 02:20:51,354 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2019-10-15 02:20:51,354 INFO L130 BoogieDeclarations]: Found specification of procedure tty_ldisc_flush [2019-10-15 02:20:51,354 INFO L130 BoogieDeclarations]: Found specification of procedure tty_mode_ioctl [2019-10-15 02:20:51,354 INFO L130 BoogieDeclarations]: Found specification of procedure tty_register_ldisc [2019-10-15 02:20:51,354 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_ldisc [2019-10-15 02:20:51,354 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2019-10-15 02:20:51,355 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2019-10-15 02:20:51,355 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2019-10-15 02:20:51,355 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2019-10-15 02:20:51,355 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2019-10-15 02:20:51,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev_13 [2019-10-15 02:20:51,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev_28 [2019-10-15 02:20:51,355 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2019-10-15 02:20:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2019-10-15 02:20:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2019-10-15 02:20:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2019-10-15 02:20:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2019-10-15 02:20:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2019-10-15 02:20:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 02:20:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2019-10-15 02:20:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_queue_stopped [2019-10-15 02:20:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2019-10-15 02:20:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2019-10-15 02:20:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_16 [2019-10-15 02:20:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_21 [2019-10-15 02:20:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_24 [2019-10-15 02:20:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_26 [2019-10-15 02:20:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_netdev_mqs [2019-10-15 02:20:51,358 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2019-10-15 02:20:51,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_12 [2019-10-15 02:20:51,358 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2019-10-15 02:20:51,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev_27 [2019-10-15 02:20:51,358 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2019-10-15 02:20:51,358 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2019-10-15 02:20:51,358 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2019-10-15 02:20:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2019-10-15 02:20:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2019-10-15 02:20:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2019-10-15 02:20:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2019-10-15 02:20:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2019-10-15 02:20:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2019-10-15 02:20:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2019-10-15 02:20:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2019-10-15 02:20:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 02:20:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_esc [2019-10-15 02:20:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_unesc [2019-10-15 02:20:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_setup [2019-10-15 02:20:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_alloc [2019-10-15 02:20:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 02:20:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_free [2019-10-15 02:20:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-15 02:20:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_change_mtu [2019-10-15 02:20:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-15 02:20:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_lock [2019-10-15 02:20:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_unlock [2019-10-15 02:20:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_bump [2019-10-15 02:20:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_encaps [2019-10-15 02:20:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-15 02:20:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_write_wakeup [2019-10-15 02:20:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_timeout [2019-10-15 02:20:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_xmit [2019-10-15 02:20:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_data_indication [2019-10-15 02:20:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_data_transmit [2019-10-15 02:20:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_connected [2019-10-15 02:20:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_disconnected [2019-10-15 02:20:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_open [2019-10-15 02:20:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_close [2019-10-15 02:20:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_receive_buf [2019-10-15 02:20:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_open_tty [2019-10-15 02:20:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_close_tty [2019-10-15 02:20:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_ioctl [2019-10-15 02:20:51,364 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_compat_ioctl [2019-10-15 02:20:51,364 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_open_dev [2019-10-15 02:20:51,364 INFO L130 BoogieDeclarations]: Found specification of procedure init_x25_asy [2019-10-15 02:20:51,364 INFO L130 BoogieDeclarations]: Found specification of procedure exit_x25_asy [2019-10-15 02:20:51,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_init_2 [2019-10-15 02:20:51,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_uninit_2 [2019-10-15 02:20:51,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-15 02:20:51,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-15 02:20:51,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_3 [2019-10-15 02:20:51,365 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 02:20:51,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-10-15 02:20:51,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-15 02:20:51,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-10-15 02:20:51,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-10-15 02:20:51,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-10-15 02:20:51,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-15 02:20:51,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-15 02:20:51,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-15 02:20:51,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-15 02:20:51,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-10-15 02:20:51,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-10-15 02:20:51,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-10-15 02:20:51,366 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-15 02:20:51,367 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 02:20:51,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 02:20:51,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 02:20:51,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 02:20:51,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 02:20:51,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-15 02:20:51,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-15 02:20:51,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-15 02:20:51,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-15 02:20:52,335 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-15 02:20:55,920 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 02:20:55,921 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 02:20:55,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:20:55 BoogieIcfgContainer [2019-10-15 02:20:55,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 02:20:55,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 02:20:55,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 02:20:55,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 02:20:55,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:20:48" (1/3) ... [2019-10-15 02:20:55,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649895f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:20:55, skipping insertion in model container [2019-10-15 02:20:55,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:50" (2/3) ... [2019-10-15 02:20:55,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649895f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:20:55, skipping insertion in model container [2019-10-15 02:20:55,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:20:55" (3/3) ... [2019-10-15 02:20:55,931 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2019-10-15 02:20:55,940 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 02:20:55,950 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 02:20:55,962 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 02:20:55,993 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 02:20:55,994 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 02:20:55,994 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 02:20:55,994 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 02:20:55,994 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 02:20:55,994 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 02:20:55,994 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 02:20:55,994 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 02:20:56,033 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states. [2019-10-15 02:20:56,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-15 02:20:56,051 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:20:56,052 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:20:56,055 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:20:56,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:20:56,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1161243419, now seen corresponding path program 1 times [2019-10-15 02:20:56,070 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:20:56,070 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899124721] [2019-10-15 02:20:56,070 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:20:56,071 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:20:56,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:20:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:20:56,668 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 02:20:56,669 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899124721] [2019-10-15 02:20:56,670 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:20:56,670 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:20:56,671 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122117910] [2019-10-15 02:20:56,677 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:20:56,677 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:20:56,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:20:56,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:20:56,699 INFO L87 Difference]: Start difference. First operand 913 states. Second operand 3 states. [2019-10-15 02:20:57,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:20:57,060 INFO L93 Difference]: Finished difference Result 2526 states and 3351 transitions. [2019-10-15 02:20:57,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:20:57,062 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2019-10-15 02:20:57,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:20:57,097 INFO L225 Difference]: With dead ends: 2526 [2019-10-15 02:20:57,097 INFO L226 Difference]: Without dead ends: 1644 [2019-10-15 02:20:57,111 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 [2019-10-15 02:20:57,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2019-10-15 02:20:57,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1644. [2019-10-15 02:20:57,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1644 states. [2019-10-15 02:20:57,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2109 transitions. [2019-10-15 02:20:57,328 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2109 transitions. Word has length 69 [2019-10-15 02:20:57,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:20:57,328 INFO L462 AbstractCegarLoop]: Abstraction has 1644 states and 2109 transitions. [2019-10-15 02:20:57,329 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:20:57,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2109 transitions. [2019-10-15 02:20:57,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-15 02:20:57,338 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:20:57,338 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:20:57,339 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:20:57,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:20:57,341 INFO L82 PathProgramCache]: Analyzing trace with hash -2044195943, now seen corresponding path program 1 times [2019-10-15 02:20:57,342 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:20:57,342 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183453677] [2019-10-15 02:20:57,343 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:20:57,343 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:20:57,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:20:57,447 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 02:20:57,448 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [325585854] [2019-10-15 02:20:57,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:20:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:20:57,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 1425 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 02:20:58,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:20:58,083 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 02:20:58,084 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:20:58,266 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 02:20:58,266 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183453677] [2019-10-15 02:20:58,267 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 02:20:58,267 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325585854] [2019-10-15 02:20:58,267 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:20:58,267 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-10-15 02:20:58,268 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159954191] [2019-10-15 02:20:58,270 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 02:20:58,270 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:20:58,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 02:20:58,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-15 02:20:58,271 INFO L87 Difference]: Start difference. First operand 1644 states and 2109 transitions. Second operand 9 states. [2019-10-15 02:20:59,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:20:59,705 INFO L93 Difference]: Finished difference Result 3274 states and 4281 transitions. [2019-10-15 02:20:59,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 02:20:59,705 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2019-10-15 02:20:59,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:20:59,729 INFO L225 Difference]: With dead ends: 3274 [2019-10-15 02:20:59,729 INFO L226 Difference]: Without dead ends: 3230 [2019-10-15 02:20:59,733 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-10-15 02:20:59,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3230 states. [2019-10-15 02:20:59,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3230 to 3230. [2019-10-15 02:20:59,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3230 states. [2019-10-15 02:20:59,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3230 states to 3230 states and 4227 transitions. [2019-10-15 02:20:59,902 INFO L78 Accepts]: Start accepts. Automaton has 3230 states and 4227 transitions. Word has length 84 [2019-10-15 02:20:59,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:20:59,905 INFO L462 AbstractCegarLoop]: Abstraction has 3230 states and 4227 transitions. [2019-10-15 02:20:59,905 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 02:20:59,905 INFO L276 IsEmpty]: Start isEmpty. Operand 3230 states and 4227 transitions. [2019-10-15 02:20:59,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 02:20:59,916 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:20:59,917 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2019-10-15 02:21:00,124 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:21:00,124 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:21:00,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:21:00,125 INFO L82 PathProgramCache]: Analyzing trace with hash 24119941, now seen corresponding path program 1 times [2019-10-15 02:21:00,125 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:21:00,126 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504681553] [2019-10-15 02:21:00,126 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:00,126 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:00,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:21:00,182 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 02:21:00,183 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1964092888] [2019-10-15 02:21:00,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:21:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:00,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 1580 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 02:21:00,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:21:00,741 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 02:21:00,741 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:21:00,852 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 02:21:00,854 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504681553] [2019-10-15 02:21:00,854 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 02:21:00,855 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964092888] [2019-10-15 02:21:00,855 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:21:00,855 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-15 02:21:00,856 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878560390] [2019-10-15 02:21:00,858 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:21:00,859 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:21:00,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:21:00,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:00,861 INFO L87 Difference]: Start difference. First operand 3230 states and 4227 transitions. Second operand 3 states. [2019-10-15 02:21:01,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:21:01,104 INFO L93 Difference]: Finished difference Result 9078 states and 11788 transitions. [2019-10-15 02:21:01,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:21:01,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-15 02:21:01,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:21:01,139 INFO L225 Difference]: With dead ends: 9078 [2019-10-15 02:21:01,139 INFO L226 Difference]: Without dead ends: 5870 [2019-10-15 02:21:01,152 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:01,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5870 states. [2019-10-15 02:21:01,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5870 to 5859. [2019-10-15 02:21:01,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5859 states. [2019-10-15 02:21:01,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 7574 transitions. [2019-10-15 02:21:01,460 INFO L78 Accepts]: Start accepts. Automaton has 5859 states and 7574 transitions. Word has length 119 [2019-10-15 02:21:01,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:21:01,461 INFO L462 AbstractCegarLoop]: Abstraction has 5859 states and 7574 transitions. [2019-10-15 02:21:01,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:21:01,461 INFO L276 IsEmpty]: Start isEmpty. Operand 5859 states and 7574 transitions. [2019-10-15 02:21:01,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-15 02:21:01,472 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:21:01,473 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2019-10-15 02:21:01,681 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:21:01,681 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:21:01,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:21:01,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1057743787, now seen corresponding path program 1 times [2019-10-15 02:21:01,683 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:21:01,683 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855743585] [2019-10-15 02:21:01,683 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:01,683 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:01,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:21:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:02,037 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855743585] [2019-10-15 02:21:02,038 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2019-10-15 02:21:02,038 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959981539] [2019-10-15 02:21:02,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:21:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:02,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 1636 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 02:21:02,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:21:02,672 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 02:21:02,673 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:21:02,791 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 02:21:02,791 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:21:02,792 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-15 02:21:02,792 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067221334] [2019-10-15 02:21:02,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:21:02,793 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:21:02,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:21:02,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:02,794 INFO L87 Difference]: Start difference. First operand 5859 states and 7574 transitions. Second operand 3 states. [2019-10-15 02:21:03,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:21:03,201 INFO L93 Difference]: Finished difference Result 15841 states and 20440 transitions. [2019-10-15 02:21:03,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:21:03,201 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2019-10-15 02:21:03,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:21:03,254 INFO L225 Difference]: With dead ends: 15841 [2019-10-15 02:21:03,254 INFO L226 Difference]: Without dead ends: 10004 [2019-10-15 02:21:03,273 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:03,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10004 states. [2019-10-15 02:21:03,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10004 to 9925. [2019-10-15 02:21:03,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9925 states. [2019-10-15 02:21:03,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9925 states to 9925 states and 12797 transitions. [2019-10-15 02:21:03,633 INFO L78 Accepts]: Start accepts. Automaton has 9925 states and 12797 transitions. Word has length 132 [2019-10-15 02:21:03,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:21:03,635 INFO L462 AbstractCegarLoop]: Abstraction has 9925 states and 12797 transitions. [2019-10-15 02:21:03,635 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:21:03,635 INFO L276 IsEmpty]: Start isEmpty. Operand 9925 states and 12797 transitions. [2019-10-15 02:21:03,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-15 02:21:03,648 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:21:03,648 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2019-10-15 02:21:03,857 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:21:03,858 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:21:03,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:21:03,858 INFO L82 PathProgramCache]: Analyzing trace with hash -2067567937, now seen corresponding path program 1 times [2019-10-15 02:21:03,859 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:21:03,859 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831971374] [2019-10-15 02:21:03,859 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:03,859 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:03,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:21:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:03,982 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831971374] [2019-10-15 02:21:03,982 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2019-10-15 02:21:03,983 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166962289] [2019-10-15 02:21:03,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:21:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:04,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 1796 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 02:21:04,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:21:04,483 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-15 02:21:04,483 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:21:05,375 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-15 02:21:05,376 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:21:05,376 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-15 02:21:05,376 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665342611] [2019-10-15 02:21:05,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:21:05,377 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:21:05,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:21:05,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:05,378 INFO L87 Difference]: Start difference. First operand 9925 states and 12797 transitions. Second operand 3 states. [2019-10-15 02:21:05,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:21:05,764 INFO L93 Difference]: Finished difference Result 24605 states and 31626 transitions. [2019-10-15 02:21:05,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:21:05,764 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2019-10-15 02:21:05,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:21:05,853 INFO L225 Difference]: With dead ends: 24605 [2019-10-15 02:21:05,853 INFO L226 Difference]: Without dead ends: 14702 [2019-10-15 02:21:05,889 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:05,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14702 states. [2019-10-15 02:21:06,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14702 to 14687. [2019-10-15 02:21:06,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14687 states. [2019-10-15 02:21:06,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14687 states to 14687 states and 18826 transitions. [2019-10-15 02:21:06,542 INFO L78 Accepts]: Start accepts. Automaton has 14687 states and 18826 transitions. Word has length 154 [2019-10-15 02:21:06,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:21:06,543 INFO L462 AbstractCegarLoop]: Abstraction has 14687 states and 18826 transitions. [2019-10-15 02:21:06,543 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:21:06,543 INFO L276 IsEmpty]: Start isEmpty. Operand 14687 states and 18826 transitions. [2019-10-15 02:21:06,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-15 02:21:06,555 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:21:06,555 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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] [2019-10-15 02:21:06,762 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:21:06,765 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:21:06,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:21:06,765 INFO L82 PathProgramCache]: Analyzing trace with hash -178789606, now seen corresponding path program 1 times [2019-10-15 02:21:06,765 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:21:06,766 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779353426] [2019-10-15 02:21:06,766 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:06,766 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:06,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:21:06,807 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 02:21:06,807 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1174131735] [2019-10-15 02:21:06,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:21:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:07,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 02:21:07,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:21:07,322 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-15 02:21:07,322 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:21:07,427 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-15 02:21:07,428 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779353426] [2019-10-15 02:21:07,428 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 02:21:07,428 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174131735] [2019-10-15 02:21:07,428 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:21:07,429 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-15 02:21:07,429 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388620625] [2019-10-15 02:21:07,429 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:21:07,430 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:21:07,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:21:07,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:07,430 INFO L87 Difference]: Start difference. First operand 14687 states and 18826 transitions. Second operand 3 states. [2019-10-15 02:21:07,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:21:07,971 INFO L93 Difference]: Finished difference Result 37741 states and 48360 transitions. [2019-10-15 02:21:07,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:21:07,972 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-10-15 02:21:07,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:21:08,089 INFO L225 Difference]: With dead ends: 37741 [2019-10-15 02:21:08,089 INFO L226 Difference]: Without dead ends: 23084 [2019-10-15 02:21:08,150 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:08,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23084 states. [2019-10-15 02:21:08,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23084 to 23073. [2019-10-15 02:21:08,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23073 states. [2019-10-15 02:21:09,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23073 states to 23073 states and 29351 transitions. [2019-10-15 02:21:09,050 INFO L78 Accepts]: Start accepts. Automaton has 23073 states and 29351 transitions. Word has length 162 [2019-10-15 02:21:09,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:21:09,051 INFO L462 AbstractCegarLoop]: Abstraction has 23073 states and 29351 transitions. [2019-10-15 02:21:09,051 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:21:09,051 INFO L276 IsEmpty]: Start isEmpty. Operand 23073 states and 29351 transitions. [2019-10-15 02:21:09,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-15 02:21:09,063 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:21:09,064 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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] [2019-10-15 02:21:09,279 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:21:09,280 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:21:09,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:21:09,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1391945198, now seen corresponding path program 1 times [2019-10-15 02:21:09,281 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:21:09,281 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157951605] [2019-10-15 02:21:09,281 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:09,281 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:09,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:21:09,325 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 02:21:09,325 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055948686] [2019-10-15 02:21:09,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:21:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:09,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 02:21:09,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:21:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-10-15 02:21:09,825 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:21:09,957 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-10-15 02:21:10,090 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-10-15 02:21:10,090 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157951605] [2019-10-15 02:21:10,091 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 02:21:10,091 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055948686] [2019-10-15 02:21:10,091 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:21:10,091 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-15 02:21:10,092 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254135267] [2019-10-15 02:21:10,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:21:10,094 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:21:10,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:21:10,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:10,095 INFO L87 Difference]: Start difference. First operand 23073 states and 29351 transitions. Second operand 3 states. [2019-10-15 02:21:10,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:21:10,487 INFO L93 Difference]: Finished difference Result 34964 states and 45170 transitions. [2019-10-15 02:21:10,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:21:10,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-10-15 02:21:10,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:21:10,569 INFO L225 Difference]: With dead ends: 34964 [2019-10-15 02:21:10,570 INFO L226 Difference]: Without dead ends: 23161 [2019-10-15 02:21:10,603 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:10,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23161 states. [2019-10-15 02:21:11,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23161 to 23117. [2019-10-15 02:21:11,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23117 states. [2019-10-15 02:21:11,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23117 states to 23117 states and 29395 transitions. [2019-10-15 02:21:11,271 INFO L78 Accepts]: Start accepts. Automaton has 23117 states and 29395 transitions. Word has length 162 [2019-10-15 02:21:11,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:21:11,271 INFO L462 AbstractCegarLoop]: Abstraction has 23117 states and 29395 transitions. [2019-10-15 02:21:11,272 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:21:11,272 INFO L276 IsEmpty]: Start isEmpty. Operand 23117 states and 29395 transitions. [2019-10-15 02:21:11,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-15 02:21:11,285 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:21:11,285 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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] [2019-10-15 02:21:11,495 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:21:11,495 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:21:11,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:21:11,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1614236032, now seen corresponding path program 1 times [2019-10-15 02:21:11,495 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:21:11,496 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297189445] [2019-10-15 02:21:11,496 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:11,496 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:11,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:21:11,535 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 02:21:11,536 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [762259081] [2019-10-15 02:21:11,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:21:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:12,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 1790 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 02:21:12,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:21:12,933 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-15 02:21:12,933 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:21:13,079 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-10-15 02:21:13,079 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297189445] [2019-10-15 02:21:13,080 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 02:21:13,080 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762259081] [2019-10-15 02:21:13,080 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:21:13,080 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-10-15 02:21:13,080 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91638978] [2019-10-15 02:21:13,081 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 02:21:13,082 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:21:13,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 02:21:13,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-15 02:21:13,088 INFO L87 Difference]: Start difference. First operand 23117 states and 29395 transitions. Second operand 8 states. [2019-10-15 02:21:13,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:21:13,606 INFO L93 Difference]: Finished difference Result 46334 states and 58920 transitions. [2019-10-15 02:21:13,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 02:21:13,606 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 163 [2019-10-15 02:21:13,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:21:13,681 INFO L225 Difference]: With dead ends: 46334 [2019-10-15 02:21:13,681 INFO L226 Difference]: Without dead ends: 23187 [2019-10-15 02:21:13,722 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-15 02:21:13,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23187 states. [2019-10-15 02:21:14,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23187 to 23144. [2019-10-15 02:21:14,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23144 states. [2019-10-15 02:21:14,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23144 states to 23144 states and 29410 transitions. [2019-10-15 02:21:14,493 INFO L78 Accepts]: Start accepts. Automaton has 23144 states and 29410 transitions. Word has length 163 [2019-10-15 02:21:14,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:21:14,494 INFO L462 AbstractCegarLoop]: Abstraction has 23144 states and 29410 transitions. [2019-10-15 02:21:14,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 02:21:14,494 INFO L276 IsEmpty]: Start isEmpty. Operand 23144 states and 29410 transitions. [2019-10-15 02:21:14,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-15 02:21:14,506 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:21:14,506 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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] [2019-10-15 02:21:14,713 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:21:14,713 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:21:14,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:21:14,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1221559874, now seen corresponding path program 1 times [2019-10-15 02:21:14,714 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:21:14,714 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292861872] [2019-10-15 02:21:14,714 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:14,714 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:14,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:21:14,748 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 02:21:14,748 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [723519271] [2019-10-15 02:21:14,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:21:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:15,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 1813 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 02:21:15,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:21:15,353 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-15 02:21:15,353 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:21:15,766 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:21:15,852 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:21:15,888 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:21:16,000 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-10-15 02:21:16,000 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292861872] [2019-10-15 02:21:16,000 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 02:21:16,001 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723519271] [2019-10-15 02:21:16,001 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:21:16,001 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2019-10-15 02:21:16,001 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096995896] [2019-10-15 02:21:16,002 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 02:21:16,002 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:21:16,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 02:21:16,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-15 02:21:16,003 INFO L87 Difference]: Start difference. First operand 23144 states and 29410 transitions. Second operand 8 states.