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_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:30:23,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:30:23,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:30:23,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:30:23,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:30:23,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:30:23,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:30:23,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:30:23,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:30:23,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:30:23,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:30:23,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:30:23,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:30:23,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:30:23,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:30:23,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:30:23,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:30:23,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:30:23,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:30:23,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:30:23,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:30:23,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:30:23,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:30:23,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:30:23,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 18:30:23,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 18:30:23,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 18:30:23,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 18:30:23,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 18:30:23,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 18:30:23,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:30:23,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:30:23,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:30:23,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:30:23,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:30:23,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:30:23,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:30:23,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:30:23,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:30:23,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:30:23,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:30:23,413 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 18:30:23,432 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:30:23,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:30:23,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:30:23,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:30:23,434 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:30:23,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:30:23,434 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:30:23,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:30:23,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:30:23,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:30:23,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:30:23,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:30:23,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:30:23,436 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:30:23,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:30:23,436 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:30:23,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:30:23,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:30:23,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:30:23,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:30:23,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:30:23,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:30:23,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:30:23,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:30:23,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:30:23,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:30:23,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:30:23,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:30:23,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:30:23,747 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:30:23,766 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:30:23,770 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:30:23,772 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:30:23,773 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:30:23,773 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2019-10-13 18:30:23,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/211add203/b2bf63d009a545b5ab41c589dcf53113/FLAGbd390abe9 [2019-10-13 18:30:24,604 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:30:24,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2019-10-13 18:30:24,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/211add203/b2bf63d009a545b5ab41c589dcf53113/FLAGbd390abe9 [2019-10-13 18:30:24,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/211add203/b2bf63d009a545b5ab41c589dcf53113 [2019-10-13 18:30:24,676 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:30:24,677 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:30:24,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:30:24,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:30:24,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:30:24,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:30:24" (1/1) ... [2019-10-13 18:30:24,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f650260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:30:24, skipping insertion in model container [2019-10-13 18:30:24,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:30:24" (1/1) ... [2019-10-13 18:30:24,697 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:30:24,792 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:30:26,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:30:26,050 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:30:26,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:30:26,363 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:30:26,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:30:26 WrapperNode [2019-10-13 18:30:26,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:30:26,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:30:26,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:30:26,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:30:26,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:30:26" (1/1) ... [2019-10-13 18:30:26,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:30:26" (1/1) ... [2019-10-13 18:30:26,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:30:26" (1/1) ... [2019-10-13 18:30:26,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:30:26" (1/1) ... [2019-10-13 18:30:26,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:30:26" (1/1) ... [2019-10-13 18:30:26,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:30:26" (1/1) ... [2019-10-13 18:30:26,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:30:26" (1/1) ... [2019-10-13 18:30:26,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:30:26,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:30:26,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:30:26,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:30:26,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:30:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:30:26,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:30:26,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:30:26,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2019-10-13 18:30:26,692 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2019-10-13 18:30:26,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 18:30:26,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-13 18:30:26,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-13 18:30:26,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-13 18:30:26,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-13 18:30:26,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 18:30:26,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-13 18:30:26,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-13 18:30:26,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-13 18:30:26,695 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2019-10-13 18:30:26,696 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_raw_init [2019-10-13 18:30:26,696 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_raw_exit [2019-10-13 18:30:26,696 INFO L138 BoogieDeclarations]: Found implementation of procedure rx [2019-10-13 18:30:26,696 INFO L138 BoogieDeclarations]: Found implementation of procedure build_header [2019-10-13 18:30:26,696 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_tx [2019-10-13 18:30:26,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_ArcProto_1 [2019-10-13 18:30:26,697 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:30:26,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-10-13 18:30:26,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-10-13 18:30:26,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-10-13 18:30:26,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-10-13 18:30:26,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-10-13 18:30:26,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_13 [2019-10-13 18:30:26,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_14 [2019-10-13 18:30:26,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_15 [2019-10-13 18:30:26,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-10-13 18:30:26,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-13 18:30:26,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-10-13 18:30:26,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-10-13 18:30:26,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-10-13 18:30:26,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-13 18:30:26,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-13 18:30:26,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-13 18:30:26,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-13 18:30:26,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-10-13 18:30:26,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 18:30:26,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-10-13 18:30:26,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-10-13 18:30:26,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-10-13 18:30:26,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-10-13 18:30:26,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-10-13 18:30:26,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 18:30:26,704 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_unregister_proto [2019-10-13 18:30:26,704 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 18:30:26,705 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-10-13 18:30:26,705 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-10-13 18:30:26,705 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-10-13 18:30:26,706 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 18:30:26,706 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 18:30:26,706 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-13 18:30:26,706 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-13 18:30:26,707 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-13 18:30:26,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:30:26,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-13 18:30:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 18:30:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-13 18:30:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-13 18:30:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-10-13 18:30:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-10-13 18:30:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-10-13 18:30:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-10-13 18:30:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_13 [2019-10-13 18:30:26,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-10-13 18:30:26,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_14 [2019-10-13 18:30:26,710 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-10-13 18:30:26,711 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-10-13 18:30:26,711 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-10-13 18:30:26,711 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2019-10-13 18:30:26,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 18:30:26,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 18:30:26,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-10-13 18:30:26,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-10-13 18:30:26,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-10-13 18:30:26,713 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 18:30:26,713 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 18:30:26,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:30:26,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2019-10-13 18:30:26,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 18:30:26,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 18:30:26,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 18:30:26,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 18:30:26,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 18:30:26,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-13 18:30:26,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-13 18:30:26,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-13 18:30:26,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-13 18:30:26,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-13 18:30:26,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 18:30:26,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-13 18:30:26,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-13 18:30:26,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_ArcProto_1 [2019-10-13 18:30:26,717 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2019-10-13 18:30:26,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_15 [2019-10-13 18:30:26,717 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_unregister_proto [2019-10-13 18:30:26,717 INFO L130 BoogieDeclarations]: Found specification of procedure rx [2019-10-13 18:30:26,718 INFO L130 BoogieDeclarations]: Found specification of procedure build_header [2019-10-13 18:30:26,718 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_tx [2019-10-13 18:30:26,718 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_raw_init [2019-10-13 18:30:26,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 18:30:26,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 18:30:26,719 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_raw_exit [2019-10-13 18:30:26,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-13 18:30:26,720 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2019-10-13 18:30:26,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 18:30:26,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 18:30:26,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 18:30:26,721 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:30:26,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-13 18:30:26,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 18:30:26,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-10-13 18:30:26,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-13 18:30:26,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-10-13 18:30:26,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-10-13 18:30:26,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-10-13 18:30:26,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-13 18:30:26,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-13 18:30:26,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-13 18:30:26,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-13 18:30:26,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-10-13 18:30:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-10-13 18:30:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-10-13 18:30:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 18:30:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 18:30:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 18:30:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:30:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 18:30:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 18:30:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:30:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-13 18:30:26,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-13 18:30:26,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-13 18:30:26,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-13 18:30:27,782 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-13 18:30:28,423 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:30:28,423 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 18:30:28,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:30:28 BoogieIcfgContainer [2019-10-13 18:30:28,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:30:28,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:30:28,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:30:28,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:30:28,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:30:24" (1/3) ... [2019-10-13 18:30:28,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691e5dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:30:28, skipping insertion in model container [2019-10-13 18:30:28,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:30:26" (2/3) ... [2019-10-13 18:30:28,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691e5dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:30:28, skipping insertion in model container [2019-10-13 18:30:28,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:30:28" (3/3) ... [2019-10-13 18:30:28,433 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2019-10-13 18:30:28,443 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:30:28,451 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:30:28,461 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:30:28,490 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:30:28,491 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:30:28,491 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:30:28,491 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:30:28,491 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:30:28,491 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:30:28,491 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:30:28,491 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:30:28,526 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2019-10-13 18:30:28,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-13 18:30:28,541 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:30:28,542 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] [2019-10-13 18:30:28,544 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:30:28,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:30:28,550 INFO L82 PathProgramCache]: Analyzing trace with hash -789799879, now seen corresponding path program 1 times [2019-10-13 18:30:28,557 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:30:28,558 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968435520] [2019-10-13 18:30:28,558 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:28,558 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:28,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:30:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:29,170 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-10-13 18:30:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:29,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:30:29,397 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968435520] [2019-10-13 18:30:29,398 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:30:29,398 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 18:30:29,398 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953949318] [2019-10-13 18:30:29,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 18:30:29,410 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:30:29,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 18:30:29,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:30:29,438 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 7 states. [2019-10-13 18:30:29,684 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-10-13 18:30:30,147 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-10-13 18:30:30,972 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2019-10-13 18:30:33,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:30:33,259 INFO L93 Difference]: Finished difference Result 835 states and 1142 transitions. [2019-10-13 18:30:33,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 18:30:33,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2019-10-13 18:30:33,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:30:33,284 INFO L225 Difference]: With dead ends: 835 [2019-10-13 18:30:33,284 INFO L226 Difference]: Without dead ends: 599 [2019-10-13 18:30:33,291 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-10-13 18:30:33,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2019-10-13 18:30:33,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 380. [2019-10-13 18:30:33,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2019-10-13 18:30:33,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 468 transitions. [2019-10-13 18:30:33,450 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 468 transitions. Word has length 49 [2019-10-13 18:30:33,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:30:33,452 INFO L462 AbstractCegarLoop]: Abstraction has 380 states and 468 transitions. [2019-10-13 18:30:33,452 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 18:30:33,452 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 468 transitions. [2019-10-13 18:30:33,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 18:30:33,464 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:30:33,464 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] [2019-10-13 18:30:33,465 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:30:33,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:30:33,465 INFO L82 PathProgramCache]: Analyzing trace with hash 545359979, now seen corresponding path program 1 times [2019-10-13 18:30:33,465 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:30:33,466 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940087378] [2019-10-13 18:30:33,466 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:33,466 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:33,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:30:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:33,703 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-10-13 18:30:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:33,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:30:33,859 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940087378] [2019-10-13 18:30:33,860 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:30:33,860 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:30:33,860 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901784835] [2019-10-13 18:30:33,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 18:30:33,862 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:30:33,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 18:30:33,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 18:30:33,863 INFO L87 Difference]: Start difference. First operand 380 states and 468 transitions. Second operand 8 states. [2019-10-13 18:30:34,015 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-13 18:30:34,635 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-13 18:30:34,974 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-10-13 18:30:36,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:30:36,954 INFO L93 Difference]: Finished difference Result 989 states and 1288 transitions. [2019-10-13 18:30:36,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 18:30:36,955 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2019-10-13 18:30:36,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:30:36,966 INFO L225 Difference]: With dead ends: 989 [2019-10-13 18:30:36,966 INFO L226 Difference]: Without dead ends: 630 [2019-10-13 18:30:36,972 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2019-10-13 18:30:36,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2019-10-13 18:30:37,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 381. [2019-10-13 18:30:37,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2019-10-13 18:30:37,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 469 transitions. [2019-10-13 18:30:37,078 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 469 transitions. Word has length 52 [2019-10-13 18:30:37,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:30:37,079 INFO L462 AbstractCegarLoop]: Abstraction has 381 states and 469 transitions. [2019-10-13 18:30:37,079 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 18:30:37,079 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 469 transitions. [2019-10-13 18:30:37,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-13 18:30:37,081 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:30:37,082 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, 1, 1, 1, 1] [2019-10-13 18:30:37,082 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:30:37,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:30:37,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1879641692, now seen corresponding path program 1 times [2019-10-13 18:30:37,088 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:30:37,089 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109939241] [2019-10-13 18:30:37,090 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:37,097 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:37,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:30:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:37,323 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-10-13 18:30:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:30:37,511 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109939241] [2019-10-13 18:30:37,512 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350816631] [2019-10-13 18:30:37,513 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 [2019-10-13 18:30:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:37,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 18:30:37,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:30:37,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 18:30:37,929 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:30:37,929 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2019-10-13 18:30:37,929 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187053807] [2019-10-13 18:30:37,930 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 18:30:37,930 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:30:37,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 18:30:37,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-10-13 18:30:37,931 INFO L87 Difference]: Start difference. First operand 381 states and 469 transitions. Second operand 4 states. [2019-10-13 18:30:38,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:30:38,031 INFO L93 Difference]: Finished difference Result 745 states and 920 transitions. [2019-10-13 18:30:38,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 18:30:38,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2019-10-13 18:30:38,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:30:38,036 INFO L225 Difference]: With dead ends: 745 [2019-10-13 18:30:38,037 INFO L226 Difference]: Without dead ends: 382 [2019-10-13 18:30:38,039 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-13 18:30:38,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2019-10-13 18:30:38,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2019-10-13 18:30:38,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2019-10-13 18:30:38,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 470 transitions. [2019-10-13 18:30:38,105 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 470 transitions. Word has length 56 [2019-10-13 18:30:38,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:30:38,106 INFO L462 AbstractCegarLoop]: Abstraction has 382 states and 470 transitions. [2019-10-13 18:30:38,106 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 18:30:38,106 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 470 transitions. [2019-10-13 18:30:38,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 18:30:38,109 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:30:38,109 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, 1, 1, 1, 1, 1] [2019-10-13 18:30:38,313 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:30:38,314 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:30:38,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:30:38,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1233472387, now seen corresponding path program 1 times [2019-10-13 18:30:38,314 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:30:38,314 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294041604] [2019-10-13 18:30:38,315 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:38,315 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:38,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:30:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:38,501 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-10-13 18:30:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:38,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 18:30:38,678 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294041604] [2019-10-13 18:30:38,679 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578374171] [2019-10-13 18:30:38,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:30:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:38,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 18:30:38,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:30:38,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 18:30:38,913 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:30:38,913 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4] total 11 [2019-10-13 18:30:38,914 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171666044] [2019-10-13 18:30:38,916 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 18:30:38,916 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:30:38,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 18:30:38,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2019-10-13 18:30:38,917 INFO L87 Difference]: Start difference. First operand 382 states and 470 transitions. Second operand 11 states. [2019-10-13 18:30:39,068 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-13 18:30:39,275 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-10-13 18:30:39,539 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2019-10-13 18:30:40,074 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-10-13 18:30:40,328 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-10-13 18:30:40,714 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-10-13 18:30:42,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:30:42,627 INFO L93 Difference]: Finished difference Result 924 states and 1163 transitions. [2019-10-13 18:30:42,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 18:30:42,640 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2019-10-13 18:30:42,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:30:42,646 INFO L225 Difference]: With dead ends: 924 [2019-10-13 18:30:42,646 INFO L226 Difference]: Without dead ends: 564 [2019-10-13 18:30:42,648 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2019-10-13 18:30:42,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-10-13 18:30:42,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 386. [2019-10-13 18:30:42,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2019-10-13 18:30:42,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 474 transitions. [2019-10-13 18:30:42,716 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 474 transitions. Word has length 57 [2019-10-13 18:30:42,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:30:42,717 INFO L462 AbstractCegarLoop]: Abstraction has 386 states and 474 transitions. [2019-10-13 18:30:42,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 18:30:42,717 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 474 transitions. [2019-10-13 18:30:42,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-13 18:30:42,720 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:30:42,721 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 18:30:42,926 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:30:42,927 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:30:42,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:30:42,928 INFO L82 PathProgramCache]: Analyzing trace with hash -294140746, now seen corresponding path program 2 times [2019-10-13 18:30:42,928 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:30:42,928 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840082986] [2019-10-13 18:30:42,928 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:42,928 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:42,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:30:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:43,183 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-10-13 18:30:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:43,407 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 18:30:43,408 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840082986] [2019-10-13 18:30:43,408 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314134415] [2019-10-13 18:30:43,411 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:30:43,663 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-13 18:30:43,664 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 18:30:43,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 18:30:43,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:30:43,729 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 18:30:43,730 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:30:43,730 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 13 [2019-10-13 18:30:43,730 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532473928] [2019-10-13 18:30:43,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:30:43,732 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:30:43,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:30:43,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-10-13 18:30:43,733 INFO L87 Difference]: Start difference. First operand 386 states and 474 transitions. Second operand 5 states. [2019-10-13 18:30:43,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:30:43,876 INFO L93 Difference]: Finished difference Result 749 states and 922 transitions. [2019-10-13 18:30:43,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 18:30:43,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2019-10-13 18:30:43,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:30:43,880 INFO L225 Difference]: With dead ends: 749 [2019-10-13 18:30:43,880 INFO L226 Difference]: Without dead ends: 385 [2019-10-13 18:30:43,882 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-13 18:30:43,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2019-10-13 18:30:43,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2019-10-13 18:30:43,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2019-10-13 18:30:43,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 471 transitions. [2019-10-13 18:30:43,928 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 471 transitions. Word has length 61 [2019-10-13 18:30:43,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:30:43,929 INFO L462 AbstractCegarLoop]: Abstraction has 385 states and 471 transitions. [2019-10-13 18:30:43,929 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:30:43,929 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 471 transitions. [2019-10-13 18:30:43,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-13 18:30:43,932 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:30:43,932 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:30:44,137 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:30:44,138 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:30:44,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:30:44,138 INFO L82 PathProgramCache]: Analyzing trace with hash -542762453, now seen corresponding path program 1 times [2019-10-13 18:30:44,139 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:30:44,139 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579707818] [2019-10-13 18:30:44,139 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:44,139 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:44,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:30:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:44,357 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-10-13 18:30:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:44,604 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 18:30:44,605 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579707818] [2019-10-13 18:30:44,605 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:30:44,605 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 18:30:44,606 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633454949] [2019-10-13 18:30:44,606 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 18:30:44,606 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:30:44,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 18:30:44,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-13 18:30:44,608 INFO L87 Difference]: Start difference. First operand 385 states and 471 transitions. Second operand 12 states. [2019-10-13 18:30:44,780 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-13 18:30:45,000 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-10-13 18:30:45,221 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2019-10-13 18:30:46,138 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-10-13 18:30:47,348 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-10-13 18:30:49,449 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2019-10-13 18:30:49,959 WARN L191 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2019-10-13 18:30:50,136 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-10-13 18:30:50,309 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-10-13 18:30:51,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:30:51,383 INFO L93 Difference]: Finished difference Result 1335 states and 1707 transitions. [2019-10-13 18:30:51,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-13 18:30:51,388 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2019-10-13 18:30:51,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:30:51,397 INFO L225 Difference]: With dead ends: 1335 [2019-10-13 18:30:51,398 INFO L226 Difference]: Without dead ends: 956 [2019-10-13 18:30:51,400 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=198, Invalid=504, Unknown=0, NotChecked=0, Total=702 [2019-10-13 18:30:51,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2019-10-13 18:30:51,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 797. [2019-10-13 18:30:51,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2019-10-13 18:30:51,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1001 transitions. [2019-10-13 18:30:51,524 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1001 transitions. Word has length 91 [2019-10-13 18:30:51,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:30:51,524 INFO L462 AbstractCegarLoop]: Abstraction has 797 states and 1001 transitions. [2019-10-13 18:30:51,524 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 18:30:51,524 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1001 transitions. [2019-10-13 18:30:51,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-13 18:30:51,528 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:30:51,529 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:30:51,529 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:30:51,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:30:51,529 INFO L82 PathProgramCache]: Analyzing trace with hash -2115671748, now seen corresponding path program 1 times [2019-10-13 18:30:51,529 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:30:51,530 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90971847] [2019-10-13 18:30:51,530 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:51,530 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:51,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:30:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:52,041 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 18:30:52,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90971847] [2019-10-13 18:30:52,041 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:30:52,042 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 18:30:52,042 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106200370] [2019-10-13 18:30:52,043 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 18:30:52,044 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:30:52,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 18:30:52,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-13 18:30:52,045 INFO L87 Difference]: Start difference. First operand 797 states and 1001 transitions. Second operand 11 states. [2019-10-13 18:30:52,186 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-13 18:30:52,360 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-10-13 18:30:52,523 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2019-10-13 18:30:53,065 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-10-13 18:30:53,967 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-10-13 18:30:55,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:30:55,817 INFO L93 Difference]: Finished difference Result 1434 states and 1821 transitions. [2019-10-13 18:30:55,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 18:30:55,818 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 137 [2019-10-13 18:30:55,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:30:55,822 INFO L225 Difference]: With dead ends: 1434 [2019-10-13 18:30:55,822 INFO L226 Difference]: Without dead ends: 659 [2019-10-13 18:30:55,825 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2019-10-13 18:30:55,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-10-13 18:30:55,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 493. [2019-10-13 18:30:55,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2019-10-13 18:30:55,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 621 transitions. [2019-10-13 18:30:55,871 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 621 transitions. Word has length 137 [2019-10-13 18:30:55,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:30:55,872 INFO L462 AbstractCegarLoop]: Abstraction has 493 states and 621 transitions. [2019-10-13 18:30:55,872 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 18:30:55,872 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 621 transitions. [2019-10-13 18:30:55,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-13 18:30:55,874 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:30:55,875 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:30:55,875 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:30:55,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:30:55,875 INFO L82 PathProgramCache]: Analyzing trace with hash 52784314, now seen corresponding path program 2 times [2019-10-13 18:30:55,875 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:30:55,876 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751036628] [2019-10-13 18:30:55,876 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:55,876 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:55,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:30:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:56,045 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-10-13 18:30:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:56,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:56,497 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 18:30:56,498 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751036628] [2019-10-13 18:30:56,498 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:30:56,498 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-13 18:30:56,498 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450291541] [2019-10-13 18:30:56,499 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-13 18:30:56,499 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:30:56,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-13 18:30:56,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-10-13 18:30:56,500 INFO L87 Difference]: Start difference. First operand 493 states and 621 transitions. Second operand 13 states. [2019-10-13 18:30:56,667 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-13 18:30:56,942 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-10-13 18:30:57,478 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 100