/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 20:03:40,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 20:03:40,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 20:03:40,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 20:03:40,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 20:03:40,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 20:03:40,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 20:03:40,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 20:03:40,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 20:03:40,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 20:03:40,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 20:03:40,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 20:03:40,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 20:03:40,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 20:03:40,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 20:03:40,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 20:03:40,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 20:03:40,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 20:03:40,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 20:03:40,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 20:03:40,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 20:03:40,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 20:03:40,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 20:03:40,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 20:03:40,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 20:03:40,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 20:03:40,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 20:03:40,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 20:03:40,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 20:03:40,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 20:03:40,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 20:03:40,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 20:03:40,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 20:03:40,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 20:03:40,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 20:03:40,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 20:03:40,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 20:03:40,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 20:03:40,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 20:03:40,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 20:03:40,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 20:03:40,981 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 20:03:41,001 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 20:03:41,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 20:03:41,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 20:03:41,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 20:03:41,002 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 20:03:41,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 20:03:41,003 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 20:03:41,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 20:03:41,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 20:03:41,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 20:03:41,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 20:03:41,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 20:03:41,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 20:03:41,007 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 20:03:41,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 20:03:41,007 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 20:03:41,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 20:03:41,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 20:03:41,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 20:03:41,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 20:03:41,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 20:03:41,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 20:03:41,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 20:03:41,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 20:03:41,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 20:03:41,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 20:03:41,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 20:03:41,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 20:03:41,012 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 20:03:41,285 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 20:03:41,300 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 20:03:41,304 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 20:03:41,306 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 20:03:41,306 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 20:03:41,307 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point.cil.out.i [2019-11-06 20:03:41,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2caf44092/f65014b9bcaa4570847e840898f3e15e/FLAG6514bcef3 [2019-11-06 20:03:42,155 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 20:03:42,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point.cil.out.i [2019-11-06 20:03:42,187 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2caf44092/f65014b9bcaa4570847e840898f3e15e/FLAG6514bcef3 [2019-11-06 20:03:42,238 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2caf44092/f65014b9bcaa4570847e840898f3e15e [2019-11-06 20:03:42,248 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 20:03:42,250 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 20:03:42,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 20:03:42,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 20:03:42,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 20:03:42,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:03:42" (1/1) ... [2019-11-06 20:03:42,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e7b8318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:03:42, skipping insertion in model container [2019-11-06 20:03:42,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:03:42" (1/1) ... [2019-11-06 20:03:42,267 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 20:03:42,385 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 20:03:43,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 20:03:43,609 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 20:03:43,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 20:03:43,938 INFO L192 MainTranslator]: Completed translation [2019-11-06 20:03:43,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:03:43 WrapperNode [2019-11-06 20:03:43,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 20:03:43,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 20:03:43,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 20:03:43,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 20:03:43,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:03:43" (1/1) ... [2019-11-06 20:03:43,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:03:43" (1/1) ... [2019-11-06 20:03:44,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:03:43" (1/1) ... [2019-11-06 20:03:44,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:03:43" (1/1) ... [2019-11-06 20:03:44,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:03:43" (1/1) ... [2019-11-06 20:03:44,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:03:43" (1/1) ... [2019-11-06 20:03:44,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:03:43" (1/1) ... [2019-11-06 20:03:44,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 20:03:44,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 20:03:44,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 20:03:44,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 20:03:44,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:03:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 20:03:44,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 20:03:44,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 20:03:44,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2019-11-06 20:03:44,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2019-11-06 20:03:44,277 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2019-11-06 20:03:44,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-06 20:03:44,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-06 20:03:44,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-11-06 20:03:44,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-11-06 20:03:44,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-11-06 20:03:44,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-11-06 20:03:44,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-11-06 20:03:44,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-11-06 20:03:44,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-11-06 20:03:44,279 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2019-11-06 20:03:44,279 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2019-11-06 20:03:44,279 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_rfc1201_init [2019-11-06 20:03:44,279 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_rfc1201_exit [2019-11-06 20:03:44,280 INFO L138 BoogieDeclarations]: Found implementation of procedure type_trans [2019-11-06 20:03:44,282 INFO L138 BoogieDeclarations]: Found implementation of procedure rx [2019-11-06 20:03:44,282 INFO L138 BoogieDeclarations]: Found implementation of procedure build_header [2019-11-06 20:03:44,282 INFO L138 BoogieDeclarations]: Found implementation of procedure load_pkt [2019-11-06 20:03:44,282 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_tx [2019-11-06 20:03:44,283 INFO L138 BoogieDeclarations]: Found implementation of procedure continue_tx [2019-11-06 20:03:44,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_ArcProto_1 [2019-11-06 20:03:44,283 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 20:03:44,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-11-06 20:03:44,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-11-06 20:03:44,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-11-06 20:03:44,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-11-06 20:03:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-11-06 20:03:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_12 [2019-11-06 20:03:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2019-11-06 20:03:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_15 [2019-11-06 20:03:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-11-06 20:03:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-11-06 20:03:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-11-06 20:03:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-11-06 20:03:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-11-06 20:03:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-11-06 20:03:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-11-06 20:03:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-11-06 20:03:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-11-06 20:03:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-11-06 20:03:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-06 20:03:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-11-06 20:03:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-11-06 20:03:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-11-06 20:03:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-11-06 20:03:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-11-06 20:03:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-06 20:03:44,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_irq [2019-11-06 20:03:44,287 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_unregister_proto [2019-11-06 20:03:44,287 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-11-06 20:03:44,287 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-11-06 20:03:44,287 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-11-06 20:03:44,287 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-11-06 20:03:44,287 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-06 20:03:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-06 20:03:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-06 20:03:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-06 20:03:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-06 20:03:44,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 20:03:44,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-11-06 20:03:44,289 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2019-11-06 20:03:44,289 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-11-06 20:03:44,289 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-06 20:03:44,290 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-06 20:03:44,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-11-06 20:03:44,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-11-06 20:03:44,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-11-06 20:03:44,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-11-06 20:03:44,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-11-06 20:03:44,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_12 [2019-11-06 20:03:44,291 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-11-06 20:03:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-11-06 20:03:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-11-06 20:03:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2019-11-06 20:03:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 20:03:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 20:03:44,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-11-06 20:03:44,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-11-06 20:03:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-11-06 20:03:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 20:03:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-06 20:03:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 20:03:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2019-11-06 20:03:44,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-06 20:03:44,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-06 20:03:44,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 20:03:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-06 20:03:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 20:03:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-06 20:03:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-06 20:03:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-11-06 20:03:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-11-06 20:03:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-11-06 20:03:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-11-06 20:03:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-11-06 20:03:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-11-06 20:03:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_ArcProto_1 [2019-11-06 20:03:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2019-11-06 20:03:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_irq [2019-11-06 20:03:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2019-11-06 20:03:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2019-11-06 20:03:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_15 [2019-11-06 20:03:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_unregister_proto [2019-11-06 20:03:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure type_trans [2019-11-06 20:03:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure rx [2019-11-06 20:03:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure build_header [2019-11-06 20:03:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_tx [2019-11-06 20:03:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure continue_tx [2019-11-06 20:03:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_rfc1201_init [2019-11-06 20:03:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 20:03:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 20:03:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_rfc1201_exit [2019-11-06 20:03:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 20:03:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2019-11-06 20:03:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-06 20:03:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure load_pkt [2019-11-06 20:03:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 20:03:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-06 20:03:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-06 20:03:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 20:03:44,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-06 20:03:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-11-06 20:03:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-11-06 20:03:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-11-06 20:03:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-11-06 20:03:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-11-06 20:03:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-11-06 20:03:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-11-06 20:03:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-11-06 20:03:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-11-06 20:03:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-11-06 20:03:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-11-06 20:03:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-11-06 20:03:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-06 20:03:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 20:03:44,307 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-06 20:03:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 20:03:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 20:03:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-06 20:03:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 20:03:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-06 20:03:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-11-06 20:03:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-06 20:03:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-06 20:03:45,134 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-11-06 20:03:53,705 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 20:03:53,705 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-06 20:03:53,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:03:53 BoogieIcfgContainer [2019-11-06 20:03:53,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 20:03:53,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 20:03:53,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 20:03:53,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 20:03:53,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:03:42" (1/3) ... [2019-11-06 20:03:53,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de67a25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:03:53, skipping insertion in model container [2019-11-06 20:03:53,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:03:43" (2/3) ... [2019-11-06 20:03:53,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de67a25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:03:53, skipping insertion in model container [2019-11-06 20:03:53,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:03:53" (3/3) ... [2019-11-06 20:03:53,724 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point.cil.out.i [2019-11-06 20:03:53,737 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 20:03:53,751 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 20:03:53,766 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 20:03:53,814 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 20:03:53,814 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 20:03:53,814 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 20:03:53,814 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 20:03:53,814 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 20:03:53,815 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 20:03:53,815 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 20:03:53,815 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 20:03:53,860 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states. [2019-11-06 20:03:53,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-11-06 20:03:53,876 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 20:03:53,877 INFO L410 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] [2019-11-06 20:03:53,879 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 20:03:53,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 20:03:53,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1228622639, now seen corresponding path program 1 times [2019-11-06 20:03:53,895 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 20:03:53,895 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506656043] [2019-11-06 20:03:53,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 20:03:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:54,883 WARN L191 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2019-11-06 20:03:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:55,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 20:03:55,158 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506656043] [2019-11-06 20:03:55,159 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 20:03:55,159 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 20:03:55,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276149074] [2019-11-06 20:03:55,169 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 20:03:55,169 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 20:03:55,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 20:03:55,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-06 20:03:55,186 INFO L87 Difference]: Start difference. First operand 398 states. Second operand 7 states. [2019-11-06 20:03:55,650 WARN L191 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2019-11-06 20:03:56,942 WARN L191 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2019-11-06 20:04:06,065 WARN L191 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2019-11-06 20:04:22,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 20:04:22,676 INFO L93 Difference]: Finished difference Result 1278 states and 1817 transitions. [2019-11-06 20:04:22,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-06 20:04:22,680 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2019-11-06 20:04:22,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 20:04:22,708 INFO L225 Difference]: With dead ends: 1278 [2019-11-06 20:04:22,708 INFO L226 Difference]: Without dead ends: 903 [2019-11-06 20:04:22,718 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-11-06 20:04:22,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2019-11-06 20:04:22,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 664. [2019-11-06 20:04:22,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2019-11-06 20:04:22,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 891 transitions. [2019-11-06 20:04:22,917 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 891 transitions. Word has length 49 [2019-11-06 20:04:22,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 20:04:22,918 INFO L462 AbstractCegarLoop]: Abstraction has 664 states and 891 transitions. [2019-11-06 20:04:22,918 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 20:04:22,918 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 891 transitions. [2019-11-06 20:04:22,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-06 20:04:22,923 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 20:04:22,923 INFO L410 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] [2019-11-06 20:04:22,923 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 20:04:22,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 20:04:22,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1842869998, now seen corresponding path program 1 times [2019-11-06 20:04:22,924 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 20:04:22,924 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628394915] [2019-11-06 20:04:22,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 20:04:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:04:23,433 WARN L191 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2019-11-06 20:04:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:04:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:04:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:04:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:04:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:04:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:04:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:04:23,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 20:04:23,608 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628394915] [2019-11-06 20:04:23,608 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 20:04:23,608 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 20:04:23,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229008766] [2019-11-06 20:04:23,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 20:04:23,611 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 20:04:23,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 20:04:23,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-11-06 20:04:23,612 INFO L87 Difference]: Start difference. First operand 664 states and 891 transitions. Second operand 10 states. [2019-11-06 20:04:24,014 WARN L191 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2019-11-06 20:04:24,945 WARN L191 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 240