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--arcnet--capmode.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 02:20:15,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 02:20:15,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 02:20:15,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 02:20:15,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 02:20:15,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 02:20:15,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 02:20:15,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 02:20:15,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 02:20:15,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 02:20:15,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 02:20:15,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 02:20:15,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 02:20:15,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 02:20:15,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 02:20:15,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 02:20:15,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 02:20:15,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 02:20:15,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 02:20:15,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 02:20:15,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 02:20:15,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 02:20:15,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 02:20:15,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 02:20:15,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 02:20:15,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 02:20:15,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 02:20:15,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 02:20:15,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 02:20:15,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 02:20:15,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 02:20:15,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 02:20:15,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 02:20:15,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 02:20:15,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 02:20:15,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 02:20:15,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 02:20:15,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 02:20:15,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 02:20:15,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 02:20:15,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 02:20:15,985 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 02:20:16,006 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 02:20:16,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 02:20:16,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 02:20:16,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 02:20:16,009 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 02:20:16,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 02:20:16,009 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 02:20:16,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 02:20:16,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 02:20:16,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 02:20:16,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 02:20:16,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 02:20:16,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 02:20:16,012 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 02:20:16,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 02:20:16,012 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 02:20:16,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 02:20:16,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 02:20:16,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 02:20:16,013 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 02:20:16,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 02:20:16,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:20:16,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 02:20:16,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 02:20:16,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 02:20:16,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 02:20:16,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 02:20:16,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 02:20:16,015 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 02:20:16,286 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 02:20:16,300 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 02:20:16,304 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 02:20:16,305 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 02:20:16,306 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 02:20:16,306 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--capmode.ko-entry_point.cil.out.i [2019-10-15 02:20:16,367 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4022c5c90/7b3549f6a277450e8f6e274b31a78e6b/FLAG1c410a471 [2019-10-15 02:20:17,149 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 02:20:17,150 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--capmode.ko-entry_point.cil.out.i [2019-10-15 02:20:17,186 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4022c5c90/7b3549f6a277450e8f6e274b31a78e6b/FLAG1c410a471 [2019-10-15 02:20:17,705 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4022c5c90/7b3549f6a277450e8f6e274b31a78e6b [2019-10-15 02:20:17,715 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 02:20:17,717 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 02:20:17,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 02:20:17,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 02:20:17,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 02:20:17,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:20:17" (1/1) ... [2019-10-15 02:20:17,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ff2738f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:17, skipping insertion in model container [2019-10-15 02:20:17,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:20:17" (1/1) ... [2019-10-15 02:20:17,732 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 02:20:17,836 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 02:20:19,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:20:19,142 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 02:20:19,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:20:19,462 INFO L192 MainTranslator]: Completed translation [2019-10-15 02:20:19,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:19 WrapperNode [2019-10-15 02:20:19,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 02:20:19,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 02:20:19,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 02:20:19,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 02:20:19,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:19" (1/1) ... [2019-10-15 02:20:19,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:19" (1/1) ... [2019-10-15 02:20:19,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:19" (1/1) ... [2019-10-15 02:20:19,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:19" (1/1) ... [2019-10-15 02:20:19,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:19" (1/1) ... [2019-10-15 02:20:19,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:19" (1/1) ... [2019-10-15 02:20:19,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:19" (1/1) ... [2019-10-15 02:20:19,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 02:20:19,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 02:20:19,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 02:20:19,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 02:20:19,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:19" (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 02:20:19,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 02:20:19,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 02:20:19,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2019-10-15 02:20:19,874 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_mac_header [2019-10-15 02:20:19,874 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2019-10-15 02:20:19,874 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2019-10-15 02:20:19,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2019-10-15 02:20:19,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-15 02:20:19,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-15 02:20:19,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-15 02:20:19,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-15 02:20:19,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-15 02:20:19,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-15 02:20:19,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-15 02:20:19,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-15 02:20:19,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-15 02:20:19,877 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2019-10-15 02:20:19,877 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2019-10-15 02:20:19,877 INFO L138 BoogieDeclarations]: Found implementation of procedure rx [2019-10-15 02:20:19,878 INFO L138 BoogieDeclarations]: Found implementation of procedure build_header [2019-10-15 02:20:19,878 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_tx [2019-10-15 02:20:19,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ack_tx [2019-10-15 02:20:19,879 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_cap_init [2019-10-15 02:20:19,879 INFO L138 BoogieDeclarations]: Found implementation of procedure capmode_module_init [2019-10-15 02:20:19,879 INFO L138 BoogieDeclarations]: Found implementation of procedure capmode_module_exit [2019-10-15 02:20:19,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_ArcProto_1 [2019-10-15 02:20:19,879 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 02:20:19,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-10-15 02:20:19,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-10-15 02:20:19,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-10-15 02:20:19,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-10-15 02:20:19,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-10-15 02:20:19,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_13 [2019-10-15 02:20:19,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_14 [2019-10-15 02:20:19,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_15 [2019-10-15 02:20:19,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_17 [2019-10-15 02:20:19,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-10-15 02:20:19,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-15 02:20:19,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-10-15 02:20:19,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-10-15 02:20:19,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-10-15 02:20:19,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-15 02:20:19,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-15 02:20:19,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-15 02:20:19,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-15 02:20:19,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-10-15 02:20:19,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-15 02:20:19,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-10-15 02:20:19,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-10-15 02:20:19,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-10-15 02:20:19,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-10-15 02:20:19,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-10-15 02:20:19,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-15 02:20:19,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_irq [2019-10-15 02:20:19,882 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_unregister_proto [2019-10-15 02:20:19,883 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-15 02:20:19,883 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-10-15 02:20:19,883 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-10-15 02:20:19,883 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-10-15 02:20:19,883 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-15 02:20:19,883 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-15 02:20:19,884 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-15 02:20:19,884 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-15 02:20:19,884 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-15 02:20:19,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 02:20:19,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-15 02:20:19,884 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-15 02:20:19,885 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-15 02:20:19,885 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-15 02:20:19,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-10-15 02:20:19,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-10-15 02:20:19,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-10-15 02:20:19,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-10-15 02:20:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_13 [2019-10-15 02:20:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-10-15 02:20:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_14 [2019-10-15 02:20:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-10-15 02:20:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-10-15 02:20:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-10-15 02:20:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure skb_mac_header [2019-10-15 02:20:19,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 02:20:19,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 02:20:19,887 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2019-10-15 02:20:19,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 02:20:19,887 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2019-10-15 02:20:19,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-15 02:20:19,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-10-15 02:20:19,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-10-15 02:20:19,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-10-15 02:20:19,888 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 02:20:19,888 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 02:20:19,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 02:20:19,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2019-10-15 02:20:19,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-15 02:20:19,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 02:20:19,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 02:20:19,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2019-10-15 02:20:19,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 02:20:19,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-15 02:20:19,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-15 02:20:19,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-15 02:20:19,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-15 02:20:19,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-15 02:20:19,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-15 02:20:19,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-15 02:20:19,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-15 02:20:19,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-15 02:20:19,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_ArcProto_1 [2019-10-15 02:20:19,891 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2019-10-15 02:20:19,891 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_irq [2019-10-15 02:20:19,891 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2019-10-15 02:20:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_15 [2019-10-15 02:20:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_17 [2019-10-15 02:20:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_unregister_proto [2019-10-15 02:20:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure rx [2019-10-15 02:20:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 02:20:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2019-10-15 02:20:19,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 02:20:19,893 INFO L130 BoogieDeclarations]: Found specification of procedure build_header [2019-10-15 02:20:19,893 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_tx [2019-10-15 02:20:19,893 INFO L130 BoogieDeclarations]: Found specification of procedure ack_tx [2019-10-15 02:20:19,893 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_cap_init [2019-10-15 02:20:19,893 INFO L130 BoogieDeclarations]: Found specification of procedure capmode_module_init [2019-10-15 02:20:19,894 INFO L130 BoogieDeclarations]: Found specification of procedure capmode_module_exit [2019-10-15 02:20:19,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-15 02:20:19,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-15 02:20:19,894 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 02:20:19,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-15 02:20:19,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 02:20:19,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-10-15 02:20:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-15 02:20:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-10-15 02:20:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-10-15 02:20:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-10-15 02:20:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-15 02:20:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-15 02:20:19,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-15 02:20:19,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-15 02:20:19,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-10-15 02:20:19,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-10-15 02:20:19,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-10-15 02:20:19,896 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-15 02:20:19,897 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 02:20:19,897 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-15 02:20:19,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 02:20:19,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 02:20:19,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 02:20:19,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 02:20:19,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-15 02:20:19,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-15 02:20:19,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-15 02:20:19,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-15 02:20:20,767 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-15 02:20:21,997 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 02:20:21,998 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 02:20:21,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:20:21 BoogieIcfgContainer [2019-10-15 02:20:21,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 02:20:22,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 02:20:22,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 02:20:22,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 02:20:22,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:20:17" (1/3) ... [2019-10-15 02:20:22,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c8d7a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:20:22, skipping insertion in model container [2019-10-15 02:20:22,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:20:19" (2/3) ... [2019-10-15 02:20:22,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c8d7a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:20:22, skipping insertion in model container [2019-10-15 02:20:22,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:20:21" (3/3) ... [2019-10-15 02:20:22,007 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--capmode.ko-entry_point.cil.out.i [2019-10-15 02:20:22,017 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 02:20:22,028 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 02:20:22,039 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 02:20:22,065 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 02:20:22,065 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 02:20:22,065 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 02:20:22,065 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 02:20:22,065 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 02:20:22,065 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 02:20:22,066 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 02:20:22,066 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 02:20:22,089 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states. [2019-10-15 02:20:22,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-15 02:20:22,098 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:20:22,099 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:20:22,101 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:20:22,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:20:22,105 INFO L82 PathProgramCache]: Analyzing trace with hash -511169751, now seen corresponding path program 1 times [2019-10-15 02:20:22,114 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:20:22,114 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556314102] [2019-10-15 02:20:22,115 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:20:22,115 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:20:22,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:20:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:20:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:20:22,545 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556314102] [2019-10-15 02:20:22,547 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:20:22,547 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:20:22,547 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083165410] [2019-10-15 02:20:22,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:20:22,553 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:20:22,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:20:22,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:20:22,570 INFO L87 Difference]: Start difference. First operand 266 states. Second operand 3 states. [2019-10-15 02:20:22,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:20:22,785 INFO L93 Difference]: Finished difference Result 651 states and 844 transitions. [2019-10-15 02:20:22,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:20:22,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-15 02:20:22,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:20:22,823 INFO L225 Difference]: With dead ends: 651 [2019-10-15 02:20:22,823 INFO L226 Difference]: Without dead ends: 412 [2019-10-15 02:20:22,838 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 02:20:22,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2019-10-15 02:20:22,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2019-10-15 02:20:23,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2019-10-15 02:20:23,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 508 transitions. [2019-10-15 02:20:23,010 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 508 transitions. Word has length 46 [2019-10-15 02:20:23,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:20:23,011 INFO L462 AbstractCegarLoop]: Abstraction has 412 states and 508 transitions. [2019-10-15 02:20:23,011 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:20:23,011 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 508 transitions. [2019-10-15 02:20:23,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-15 02:20:23,019 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:20:23,020 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:20:23,020 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:20:23,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:20:23,021 INFO L82 PathProgramCache]: Analyzing trace with hash -916139688, now seen corresponding path program 1 times [2019-10-15 02:20:23,021 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:20:23,021 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209174031] [2019-10-15 02:20:23,021 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:20:23,021 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:20:23,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:20:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:20:23,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:20:23,292 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209174031] [2019-10-15 02:20:23,292 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:20:23,292 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:20:23,293 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447165977] [2019-10-15 02:20:23,294 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:20:23,295 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:20:23,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:20:23,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:20:23,296 INFO L87 Difference]: Start difference. First operand 412 states and 508 transitions. Second operand 3 states. [2019-10-15 02:20:23,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:20:23,350 INFO L93 Difference]: Finished difference Result 807 states and 1000 transitions. [2019-10-15 02:20:23,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:20:23,350 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2019-10-15 02:20:23,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:20:23,356 INFO L225 Difference]: With dead ends: 807 [2019-10-15 02:20:23,356 INFO L226 Difference]: Without dead ends: 413 [2019-10-15 02:20:23,358 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 02:20:23,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2019-10-15 02:20:23,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2019-10-15 02:20:23,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2019-10-15 02:20:23,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 509 transitions. [2019-10-15 02:20:23,406 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 509 transitions. Word has length 51 [2019-10-15 02:20:23,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:20:23,407 INFO L462 AbstractCegarLoop]: Abstraction has 413 states and 509 transitions. [2019-10-15 02:20:23,407 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:20:23,407 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 509 transitions. [2019-10-15 02:20:23,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-15 02:20:23,413 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:20:23,413 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:20:23,414 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:20:23,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:20:23,414 INFO L82 PathProgramCache]: Analyzing trace with hash -932071163, now seen corresponding path program 1 times [2019-10-15 02:20:23,417 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:20:23,418 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250678035] [2019-10-15 02:20:23,418 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:20:23,418 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:20:23,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:20:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:20:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 02:20:23,584 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250678035] [2019-10-15 02:20:23,584 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:20:23,584 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 02:20:23,585 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346212954] [2019-10-15 02:20:23,585 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 02:20:23,586 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:20:23,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 02:20:23,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:20:23,586 INFO L87 Difference]: Start difference. First operand 413 states and 509 transitions. Second operand 5 states. [2019-10-15 02:20:23,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:20:23,653 INFO L93 Difference]: Finished difference Result 807 states and 996 transitions. [2019-10-15 02:20:23,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 02:20:23,654 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-10-15 02:20:23,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:20:23,657 INFO L225 Difference]: With dead ends: 807 [2019-10-15 02:20:23,657 INFO L226 Difference]: Without dead ends: 412 [2019-10-15 02:20:23,659 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-15 02:20:23,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2019-10-15 02:20:23,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2019-10-15 02:20:23,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2019-10-15 02:20:23,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 505 transitions. [2019-10-15 02:20:23,682 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 505 transitions. Word has length 52 [2019-10-15 02:20:23,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:20:23,682 INFO L462 AbstractCegarLoop]: Abstraction has 412 states and 505 transitions. [2019-10-15 02:20:23,682 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 02:20:23,682 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 505 transitions. [2019-10-15 02:20:23,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-15 02:20:23,685 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:20:23,685 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:20:23,685 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:20:23,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:20:23,686 INFO L82 PathProgramCache]: Analyzing trace with hash -918360113, now seen corresponding path program 1 times [2019-10-15 02:20:23,686 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:20:23,686 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034341697] [2019-10-15 02:20:23,687 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:20:23,687 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:20:23,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:20:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:20:23,851 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 02:20:23,851 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034341697] [2019-10-15 02:20:23,851 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:20:23,851 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 02:20:23,852 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266804250] [2019-10-15 02:20:23,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 02:20:23,852 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:20:23,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 02:20:23,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 02:20:23,853 INFO L87 Difference]: Start difference. First operand 412 states and 505 transitions. Second operand 6 states. [2019-10-15 02:20:24,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:20:24,323 INFO L93 Difference]: Finished difference Result 814 states and 1016 transitions. [2019-10-15 02:20:24,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 02:20:24,324 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2019-10-15 02:20:24,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:20:24,331 INFO L225 Difference]: With dead ends: 814 [2019-10-15 02:20:24,331 INFO L226 Difference]: Without dead ends: 797 [2019-10-15 02:20:24,332 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-15 02:20:24,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2019-10-15 02:20:24,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 797. [2019-10-15 02:20:24,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2019-10-15 02:20:24,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 999 transitions. [2019-10-15 02:20:24,376 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 999 transitions. Word has length 84 [2019-10-15 02:20:24,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:20:24,376 INFO L462 AbstractCegarLoop]: Abstraction has 797 states and 999 transitions. [2019-10-15 02:20:24,376 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 02:20:24,376 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 999 transitions. [2019-10-15 02:20:24,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-15 02:20:24,381 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:20:24,381 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:20:24,381 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:20:24,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:20:24,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1308065827, now seen corresponding path program 1 times [2019-10-15 02:20:24,382 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:20:24,382 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352321266] [2019-10-15 02:20:24,382 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:20:24,382 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:20:24,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:20:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:20:24,608 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 02:20:24,608 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352321266] [2019-10-15 02:20:24,609 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:20:24,609 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 02:20:24,609 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728947280] [2019-10-15 02:20:24,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 02:20:24,612 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:20:24,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 02:20:24,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 02:20:24,613 INFO L87 Difference]: Start difference. First operand 797 states and 999 transitions. Second operand 4 states. [2019-10-15 02:20:24,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:20:24,664 INFO L93 Difference]: Finished difference Result 1579 states and 1982 transitions. [2019-10-15 02:20:24,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 02:20:24,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2019-10-15 02:20:24,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:20:24,670 INFO L225 Difference]: With dead ends: 1579 [2019-10-15 02:20:24,671 INFO L226 Difference]: Without dead ends: 798 [2019-10-15 02:20:24,674 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:20:24,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2019-10-15 02:20:24,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 798. [2019-10-15 02:20:24,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 798 states. [2019-10-15 02:20:24,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1000 transitions. [2019-10-15 02:20:24,720 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1000 transitions. Word has length 128 [2019-10-15 02:20:24,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:20:24,721 INFO L462 AbstractCegarLoop]: Abstraction has 798 states and 1000 transitions. [2019-10-15 02:20:24,721 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 02:20:24,721 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1000 transitions. [2019-10-15 02:20:24,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-15 02:20:24,731 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:20:24,731 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:20:24,732 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:20:24,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:20:24,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1430123746, now seen corresponding path program 1 times [2019-10-15 02:20:24,732 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:20:24,733 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781479892] [2019-10-15 02:20:24,733 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:20:24,733 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:20:24,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:20:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:20:24,878 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 02:20:24,879 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781479892] [2019-10-15 02:20:24,879 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107720894] [2019-10-15 02:20:24,879 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 02:20:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:20:25,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 02:20:25,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:20:25,379 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 02:20:25,379 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:20:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 02:20:25,593 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1081710623] [2019-10-15 02:20:25,632 INFO L162 IcfgInterpreter]: Started Sifa with 103 locations of interest [2019-10-15 02:20:25,632 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 02:20:25,639 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 02:20:25,655 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 02:20:25,658 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 02:20:27,330 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-10-15 02:20:27,971 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2019-10-15 02:20:28,229 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2019-10-15 02:20:28,368 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2019-10-15 02:20:28,515 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2019-10-15 02:20:28,718 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 366 DAG size of output: 364 [2019-10-15 02:20:28,963 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2019-10-15 02:20:29,239 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 145 for LOIs [2019-10-15 02:20:29,428 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 400 for LOIs [2019-10-15 02:20:29,532 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-15 02:20:29,647 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-15 02:20:29,855 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-15 02:20:30,080 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-15 02:20:30,193 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-15 02:20:30,369 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 451 [2019-10-15 02:20:32,177 WARN L191 SmtUtils]: Spent 891.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2019-10-15 02:20:32,427 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 673 [2019-10-15 02:20:33,081 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 670 [2019-10-15 02:20:33,362 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-15 02:20:33,489 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-15 02:20:33,705 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 461 [2019-10-15 02:20:35,424 WARN L191 SmtUtils]: Spent 798.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2019-10-15 02:20:35,634 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 624 [2019-10-15 02:20:36,165 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 621 [2019-10-15 02:20:36,355 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 465 DAG size of output: 428 [2019-10-15 02:20:36,462 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-15 02:20:36,617 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 461 [2019-10-15 02:20:36,766 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:37,066 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:37,346 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:37,558 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 461 [2019-10-15 02:20:37,723 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:38,005 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:38,242 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 461 [2019-10-15 02:20:38,366 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:38,621 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:38,905 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:39,168 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:39,412 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:39,662 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:39,913 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:40,172 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:40,686 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:40,933 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:41,428 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:41,953 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:42,201 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:42,445 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:42,694 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:43,443 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:44,192 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:44,440 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:45,173 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:45,434 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:45,926 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:46,170 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:46,672 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:47,161 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:48,147 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:49,125 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:49,847 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:50,094 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:50,347 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:50,836 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:51,091 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:51,832 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 428 [2019-10-15 02:20:53,841 WARN L191 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2019-10-15 02:20:53,953 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 511 [2019-10-15 02:20:54,287 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 506 [2019-10-15 02:20:54,617 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-15 02:20:54,723 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 485