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 0.1.24-13a467a-m [2019-10-14 22:29:24,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:29:24,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:29:24,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:29:24,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:29:24,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:29:24,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:29:24,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:29:24,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:29:24,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:29:24,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:29:24,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:29:24,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:29:24,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:29:24,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:29:24,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:29:24,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:29:24,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:29:24,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:29:24,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:29:24,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:29:24,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:29:24,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:29:24,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:29:24,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 22:29:24,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 22:29:24,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 22:29:24,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 22:29:24,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 22:29:24,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 22:29:24,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 22:29:24,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 22:29:24,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 22:29:24,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 22:29:24,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 22:29:24,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 22:29:24,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 22:29:24,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 22:29:24,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:29:24,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:29:24,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:29:24,454 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 [2019-10-14 22:29:24,467 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:29:24,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:29:24,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:29:24,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:29:24,469 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:29:24,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:29:24,469 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:29:24,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:29:24,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:29:24,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:29:24,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:29:24,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:29:24,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:29:24,471 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:29:24,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:29:24,471 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:29:24,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:29:24,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:29:24,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:29:24,472 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:29:24,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:29:24,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:29:24,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:29:24,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:29:24,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:29:24,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:29:24,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:29:24,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:29:24,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:29:24,739 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:29:24,752 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:29:24,756 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:29:24,757 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:29:24,758 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:29:24,758 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2019-10-14 22:29:24,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88846dfa2/be433fdac2464d0d84e899c360554e0e/FLAG80b48af5e [2019-10-14 22:29:25,583 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:29:25,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2019-10-14 22:29:25,621 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88846dfa2/be433fdac2464d0d84e899c360554e0e/FLAG80b48af5e [2019-10-14 22:29:25,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88846dfa2/be433fdac2464d0d84e899c360554e0e [2019-10-14 22:29:25,662 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:29:25,664 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:29:25,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:29:25,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:29:25,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:29:25,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:29:25" (1/1) ... [2019-10-14 22:29:25,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55dca4b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:25, skipping insertion in model container [2019-10-14 22:29:25,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:29:25" (1/1) ... [2019-10-14 22:29:25,680 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:29:25,790 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:29:26,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:29:27,017 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:29:27,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:29:27,265 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:29:27,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:27 WrapperNode [2019-10-14 22:29:27,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:29:27,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:29:27,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:29:27,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:29:27,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:27" (1/1) ... [2019-10-14 22:29:27,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:27" (1/1) ... [2019-10-14 22:29:27,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:27" (1/1) ... [2019-10-14 22:29:27,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:27" (1/1) ... [2019-10-14 22:29:27,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:27" (1/1) ... [2019-10-14 22:29:27,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:27" (1/1) ... [2019-10-14 22:29:27,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:27" (1/1) ... [2019-10-14 22:29:27,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:29:27,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:29:27,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:29:27,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:29:27,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:27" (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 [2019-10-14 22:29:27,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:29:27,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:29:27,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2019-10-14 22:29:27,463 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2019-10-14 22:29:27,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-14 22:29:27,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-14 22:29:27,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-14 22:29:27,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-14 22:29:27,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-14 22:29:27,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-14 22:29:27,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-14 22:29:27,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-14 22:29:27,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-14 22:29:27,466 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2019-10-14 22:29:27,466 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_raw_init [2019-10-14 22:29:27,467 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_raw_exit [2019-10-14 22:29:27,467 INFO L138 BoogieDeclarations]: Found implementation of procedure rx [2019-10-14 22:29:27,467 INFO L138 BoogieDeclarations]: Found implementation of procedure build_header [2019-10-14 22:29:27,467 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_tx [2019-10-14 22:29:27,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_ArcProto_1 [2019-10-14 22:29:27,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:29:27,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-10-14 22:29:27,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-10-14 22:29:27,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-10-14 22:29:27,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-10-14 22:29:27,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-10-14 22:29:27,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_13 [2019-10-14 22:29:27,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_14 [2019-10-14 22:29:27,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_15 [2019-10-14 22:29:27,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-10-14 22:29:27,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-14 22:29:27,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-10-14 22:29:27,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-10-14 22:29:27,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-10-14 22:29:27,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-14 22:29:27,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-14 22:29:27,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-14 22:29:27,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-14 22:29:27,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-10-14 22:29:27,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-14 22:29:27,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-10-14 22:29:27,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-10-14 22:29:27,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-10-14 22:29:27,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-10-14 22:29:27,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-10-14 22:29:27,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-14 22:29:27,475 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_unregister_proto [2019-10-14 22:29:27,475 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-14 22:29:27,475 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-10-14 22:29:27,476 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-10-14 22:29:27,476 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-10-14 22:29:27,476 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-14 22:29:27,477 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-14 22:29:27,477 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-14 22:29:27,477 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-14 22:29:27,477 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-14 22:29:27,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:29:27,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-14 22:29:27,478 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-14 22:29:27,479 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-14 22:29:27,479 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-14 22:29:27,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-10-14 22:29:27,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-10-14 22:29:27,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-10-14 22:29:27,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-10-14 22:29:27,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_13 [2019-10-14 22:29:27,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-10-14 22:29:27,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_14 [2019-10-14 22:29:27,481 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-10-14 22:29:27,481 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-10-14 22:29:27,481 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-10-14 22:29:27,482 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2019-10-14 22:29:27,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 22:29:27,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 22:29:27,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-10-14 22:29:27,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-10-14 22:29:27,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-10-14 22:29:27,483 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 22:29:27,483 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-14 22:29:27,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:29:27,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2019-10-14 22:29:27,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-14 22:29:27,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-14 22:29:27,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 22:29:27,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-14 22:29:27,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 22:29:27,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-14 22:29:27,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-14 22:29:27,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-14 22:29:27,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-14 22:29:27,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-14 22:29:27,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-14 22:29:27,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-14 22:29:27,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-14 22:29:27,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_ArcProto_1 [2019-10-14 22:29:27,487 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2019-10-14 22:29:27,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_15 [2019-10-14 22:29:27,488 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_unregister_proto [2019-10-14 22:29:27,488 INFO L130 BoogieDeclarations]: Found specification of procedure rx [2019-10-14 22:29:27,488 INFO L130 BoogieDeclarations]: Found specification of procedure build_header [2019-10-14 22:29:27,488 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_tx [2019-10-14 22:29:27,489 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_raw_init [2019-10-14 22:29:27,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 22:29:27,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 22:29:27,489 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_raw_exit [2019-10-14 22:29:27,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-14 22:29:27,490 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2019-10-14 22:29:27,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 22:29:27,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-14 22:29:27,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-14 22:29:27,491 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:29:27,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-14 22:29:27,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 22:29:27,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-10-14 22:29:27,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-14 22:29:27,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-10-14 22:29:27,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-10-14 22:29:27,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-10-14 22:29:27,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-14 22:29:27,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-14 22:29:27,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-14 22:29:27,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-14 22:29:27,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-10-14 22:29:27,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-10-14 22:29:27,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-10-14 22:29:27,495 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-14 22:29:27,495 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 22:29:27,495 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-14 22:29:27,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:29:27,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 22:29:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 22:29:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:29:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-14 22:29:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-14 22:29:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-14 22:29:27,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-14 22:29:28,519 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-14 22:29:28,967 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:29:28,967 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-14 22:29:28,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:29:28 BoogieIcfgContainer [2019-10-14 22:29:28,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:29:28,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:29:28,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:29:28,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:29:28,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:29:25" (1/3) ... [2019-10-14 22:29:28,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@547de2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:29:28, skipping insertion in model container [2019-10-14 22:29:28,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:27" (2/3) ... [2019-10-14 22:29:28,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@547de2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:29:28, skipping insertion in model container [2019-10-14 22:29:28,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:29:28" (3/3) ... [2019-10-14 22:29:28,977 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 [2019-10-14 22:29:28,987 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:29:28,996 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:29:29,008 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:29:29,039 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:29:29,039 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:29:29,040 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:29:29,040 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:29:29,040 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:29:29,040 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:29:29,040 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:29:29,040 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:29:29,072 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2019-10-14 22:29:29,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-14 22:29:29,085 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:29:29,086 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] [2019-10-14 22:29:29,089 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:29:29,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:29:29,095 INFO L82 PathProgramCache]: Analyzing trace with hash -789799879, now seen corresponding path program 1 times [2019-10-14 22:29:29,104 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:29:29,105 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944475720] [2019-10-14 22:29:29,105 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:29:29,105 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:29:29,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:29:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:29,716 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-10-14 22:29:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:29,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:29:29,932 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944475720] [2019-10-14 22:29:29,933 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:29:29,933 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 22:29:29,933 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107646189] [2019-10-14 22:29:29,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 22:29:29,939 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:29:29,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 22:29:29,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:29:29,955 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 7 states. [2019-10-14 22:29:30,095 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-10-14 22:29:30,590 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-10-14 22:29:33,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:29:33,098 INFO L93 Difference]: Finished difference Result 835 states and 1142 transitions. [2019-10-14 22:29:33,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 22:29:33,101 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2019-10-14 22:29:33,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:29:33,139 INFO L225 Difference]: With dead ends: 835 [2019-10-14 22:29:33,139 INFO L226 Difference]: Without dead ends: 599 [2019-10-14 22:29:33,149 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-10-14 22:29:33,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2019-10-14 22:29:33,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 380. [2019-10-14 22:29:33,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2019-10-14 22:29:33,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 468 transitions. [2019-10-14 22:29:33,381 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 468 transitions. Word has length 49 [2019-10-14 22:29:33,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:29:33,383 INFO L462 AbstractCegarLoop]: Abstraction has 380 states and 468 transitions. [2019-10-14 22:29:33,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 22:29:33,383 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 468 transitions. [2019-10-14 22:29:33,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 22:29:33,393 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:29:33,394 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] [2019-10-14 22:29:33,394 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:29:33,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:29:33,395 INFO L82 PathProgramCache]: Analyzing trace with hash 545359979, now seen corresponding path program 1 times [2019-10-14 22:29:33,395 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:29:33,395 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419475485] [2019-10-14 22:29:33,395 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:29:33,395 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:29:33,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:29:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:33,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:29:33,720 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419475485] [2019-10-14 22:29:33,720 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:29:33,720 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 22:29:33,721 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674672741] [2019-10-14 22:29:33,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 22:29:33,722 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:29:33,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 22:29:33,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-14 22:29:33,723 INFO L87 Difference]: Start difference. First operand 380 states and 468 transitions. Second operand 8 states. [2019-10-14 22:29:33,857 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-14 22:29:34,442 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-14 22:29:36,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:29:36,248 INFO L93 Difference]: Finished difference Result 989 states and 1288 transitions. [2019-10-14 22:29:36,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 22:29:36,249 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2019-10-14 22:29:36,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:29:36,258 INFO L225 Difference]: With dead ends: 989 [2019-10-14 22:29:36,258 INFO L226 Difference]: Without dead ends: 630 [2019-10-14 22:29:36,260 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2019-10-14 22:29:36,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2019-10-14 22:29:36,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 381. [2019-10-14 22:29:36,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2019-10-14 22:29:36,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 469 transitions. [2019-10-14 22:29:36,343 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 469 transitions. Word has length 52 [2019-10-14 22:29:36,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:29:36,344 INFO L462 AbstractCegarLoop]: Abstraction has 381 states and 469 transitions. [2019-10-14 22:29:36,344 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 22:29:36,344 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 469 transitions. [2019-10-14 22:29:36,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-14 22:29:36,348 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:29:36,349 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] [2019-10-14 22:29:36,349 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:29:36,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:29:36,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1879641692, now seen corresponding path program 1 times [2019-10-14 22:29:36,350 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:29:36,350 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081573495] [2019-10-14 22:29:36,353 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:29:36,354 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:29:36,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:29:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:36,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:29:36,695 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081573495] [2019-10-14 22:29:36,695 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214128971] [2019-10-14 22:29:36,695 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 [2019-10-14 22:29:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:36,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 22:29:36,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:29:36,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 22:29:36,986 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:29:36,987 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2019-10-14 22:29:36,987 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668479635] [2019-10-14 22:29:36,987 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 22:29:36,988 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:29:36,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 22:29:36,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-10-14 22:29:36,988 INFO L87 Difference]: Start difference. First operand 381 states and 469 transitions. Second operand 4 states. [2019-10-14 22:29:37,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:29:37,083 INFO L93 Difference]: Finished difference Result 745 states and 920 transitions. [2019-10-14 22:29:37,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 22:29:37,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2019-10-14 22:29:37,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:29:37,087 INFO L225 Difference]: With dead ends: 745 [2019-10-14 22:29:37,087 INFO L226 Difference]: Without dead ends: 382 [2019-10-14 22:29:37,090 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 [2019-10-14 22:29:37,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2019-10-14 22:29:37,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2019-10-14 22:29:37,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2019-10-14 22:29:37,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 470 transitions. [2019-10-14 22:29:37,151 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 470 transitions. Word has length 56 [2019-10-14 22:29:37,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:29:37,152 INFO L462 AbstractCegarLoop]: Abstraction has 382 states and 470 transitions. [2019-10-14 22:29:37,152 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 22:29:37,152 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 470 transitions. [2019-10-14 22:29:37,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 22:29:37,154 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:29:37,154 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] [2019-10-14 22:29:37,360 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:29:37,360 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:29:37,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:29:37,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1233472387, now seen corresponding path program 1 times [2019-10-14 22:29:37,361 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:29:37,361 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669036873] [2019-10-14 22:29:37,361 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:29:37,361 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:29:37,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:29:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:37,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 22:29:37,663 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669036873] [2019-10-14 22:29:37,663 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436250718] [2019-10-14 22:29:37,663 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 [2019-10-14 22:29:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:37,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 22:29:37,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:29:37,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 22:29:37,847 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:29:37,847 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4] total 11 [2019-10-14 22:29:37,848 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715732522] [2019-10-14 22:29:37,849 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 22:29:37,849 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:29:37,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 22:29:37,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2019-10-14 22:29:37,850 INFO L87 Difference]: Start difference. First operand 382 states and 470 transitions. Second operand 11 states. [2019-10-14 22:29:37,970 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-14 22:29:38,128 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-10-14 22:29:38,359 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2019-10-14 22:29:38,811 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-10-14 22:29:39,068 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-10-14 22:29:41,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:29:41,005 INFO L93 Difference]: Finished difference Result 924 states and 1163 transitions. [2019-10-14 22:29:41,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 22:29:41,011 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2019-10-14 22:29:41,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:29:41,014 INFO L225 Difference]: With dead ends: 924 [2019-10-14 22:29:41,014 INFO L226 Difference]: Without dead ends: 564 [2019-10-14 22:29:41,016 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2019-10-14 22:29:41,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-10-14 22:29:41,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 386. [2019-10-14 22:29:41,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2019-10-14 22:29:41,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 474 transitions. [2019-10-14 22:29:41,056 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 474 transitions. Word has length 57 [2019-10-14 22:29:41,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:29:41,056 INFO L462 AbstractCegarLoop]: Abstraction has 386 states and 474 transitions. [2019-10-14 22:29:41,056 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 22:29:41,056 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 474 transitions. [2019-10-14 22:29:41,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-14 22:29:41,058 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:29:41,058 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] [2019-10-14 22:29:41,262 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:29:41,263 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:29:41,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:29:41,264 INFO L82 PathProgramCache]: Analyzing trace with hash -294140746, now seen corresponding path program 2 times [2019-10-14 22:29:41,264 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:29:41,265 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974838533] [2019-10-14 22:29:41,265 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:29:41,266 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:29:41,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:29:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:41,579 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 22:29:41,580 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974838533] [2019-10-14 22:29:41,580 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691761166] [2019-10-14 22:29:41,580 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 [2019-10-14 22:29:41,755 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-14 22:29:41,755 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 22:29:41,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 22:29:41,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:29:41,781 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-14 22:29:41,782 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:29:41,782 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 13 [2019-10-14 22:29:41,782 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534936569] [2019-10-14 22:29:41,783 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:29:41,783 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:29:41,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:29:41,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-10-14 22:29:41,783 INFO L87 Difference]: Start difference. First operand 386 states and 474 transitions. Second operand 5 states. [2019-10-14 22:29:41,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:29:41,909 INFO L93 Difference]: Finished difference Result 749 states and 922 transitions. [2019-10-14 22:29:41,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 22:29:41,910 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2019-10-14 22:29:41,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:29:41,915 INFO L225 Difference]: With dead ends: 749 [2019-10-14 22:29:41,915 INFO L226 Difference]: Without dead ends: 385 [2019-10-14 22:29:41,917 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-14 22:29:41,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2019-10-14 22:29:41,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2019-10-14 22:29:41,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2019-10-14 22:29:41,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 471 transitions. [2019-10-14 22:29:41,962 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 471 transitions. Word has length 61 [2019-10-14 22:29:41,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:29:41,963 INFO L462 AbstractCegarLoop]: Abstraction has 385 states and 471 transitions. [2019-10-14 22:29:41,963 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:29:41,963 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 471 transitions. [2019-10-14 22:29:41,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-14 22:29:41,965 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:29:41,966 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] [2019-10-14 22:29:42,168 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:29:42,169 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:29:42,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:29:42,170 INFO L82 PathProgramCache]: Analyzing trace with hash -542762453, now seen corresponding path program 1 times [2019-10-14 22:29:42,170 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:29:42,171 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494305552] [2019-10-14 22:29:42,171 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:29:42,171 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:29:42,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:29:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:42,577 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-14 22:29:42,578 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494305552] [2019-10-14 22:29:42,578 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:29:42,578 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 22:29:42,578 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044426121] [2019-10-14 22:29:42,579 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 22:29:42,579 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:29:42,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 22:29:42,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-14 22:29:42,580 INFO L87 Difference]: Start difference. First operand 385 states and 471 transitions. Second operand 12 states. [2019-10-14 22:29:42,697 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-14 22:29:42,857 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-10-14 22:29:46,526 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2019-10-14 22:29:46,967 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2019-10-14 22:29:47,101 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-10-14 22:29:47,233 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-10-14 22:29:48,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:29:48,052 INFO L93 Difference]: Finished difference Result 1335 states and 1707 transitions. [2019-10-14 22:29:48,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-14 22:29:48,053 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2019-10-14 22:29:48,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:29:48,061 INFO L225 Difference]: With dead ends: 1335 [2019-10-14 22:29:48,061 INFO L226 Difference]: Without dead ends: 956 [2019-10-14 22:29:48,063 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=198, Invalid=504, Unknown=0, NotChecked=0, Total=702 [2019-10-14 22:29:48,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2019-10-14 22:29:48,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 797. [2019-10-14 22:29:48,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2019-10-14 22:29:48,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1001 transitions. [2019-10-14 22:29:48,142 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1001 transitions. Word has length 91 [2019-10-14 22:29:48,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:29:48,145 INFO L462 AbstractCegarLoop]: Abstraction has 797 states and 1001 transitions. [2019-10-14 22:29:48,145 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 22:29:48,146 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1001 transitions. [2019-10-14 22:29:48,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-14 22:29:48,149 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:29:48,149 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] [2019-10-14 22:29:48,149 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:29:48,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:29:48,150 INFO L82 PathProgramCache]: Analyzing trace with hash -2115671748, now seen corresponding path program 1 times [2019-10-14 22:29:48,150 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:29:48,150 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422346206] [2019-10-14 22:29:48,150 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:29:48,150 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:29:48,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:29:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:48,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:48,595 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-14 22:29:48,596 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422346206] [2019-10-14 22:29:48,596 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:29:48,596 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-14 22:29:48,596 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770493757] [2019-10-14 22:29:48,597 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 22:29:48,598 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:29:48,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 22:29:48,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-14 22:29:48,599 INFO L87 Difference]: Start difference. First operand 797 states and 1001 transitions. Second operand 11 states. [2019-10-14 22:29:48,712 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-14 22:29:48,921 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-10-14 22:29:51,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:29:51,719 INFO L93 Difference]: Finished difference Result 1434 states and 1821 transitions. [2019-10-14 22:29:51,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-14 22:29:51,720 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 137 [2019-10-14 22:29:51,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:29:51,724 INFO L225 Difference]: With dead ends: 1434 [2019-10-14 22:29:51,725 INFO L226 Difference]: Without dead ends: 659 [2019-10-14 22:29:51,727 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2019-10-14 22:29:51,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-10-14 22:29:51,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 493. [2019-10-14 22:29:51,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2019-10-14 22:29:51,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 621 transitions. [2019-10-14 22:29:51,783 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 621 transitions. Word has length 137 [2019-10-14 22:29:51,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:29:51,783 INFO L462 AbstractCegarLoop]: Abstraction has 493 states and 621 transitions. [2019-10-14 22:29:51,783 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 22:29:51,783 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 621 transitions. [2019-10-14 22:29:51,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-14 22:29:51,786 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:29:51,786 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] [2019-10-14 22:29:51,786 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:29:51,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:29:51,787 INFO L82 PathProgramCache]: Analyzing trace with hash 52784314, now seen corresponding path program 2 times [2019-10-14 22:29:51,787 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:29:51,787 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121522941] [2019-10-14 22:29:51,787 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:29:51,787 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:29:51,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:29:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:52,310 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-14 22:29:52,310 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121522941] [2019-10-14 22:29:52,311 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:29:52,311 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-14 22:29:52,311 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965732373] [2019-10-14 22:29:52,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-14 22:29:52,312 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:29:52,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-14 22:29:52,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-10-14 22:29:52,312 INFO L87 Difference]: Start difference. First operand 493 states and 621 transitions. Second operand 13 states. [2019-10-14 22:29:52,433 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-14 22:29:52,658 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-10-14 22:29:53,935 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-10-14 22:29:54,071 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-10-14 22:29:55,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:29:55,258 INFO L93 Difference]: Finished difference Result 1033 states and 1332 transitions. [2019-10-14 22:29:55,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-14 22:29:55,260 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 137 [2019-10-14 22:29:55,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:29:55,268 INFO L225 Difference]: With dead ends: 1033 [2019-10-14 22:29:55,268 INFO L226 Difference]: Without dead ends: 584 [2019-10-14 22:29:55,272 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2019-10-14 22:29:55,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2019-10-14 22:29:55,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 501. [2019-10-14 22:29:55,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2019-10-14 22:29:55,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 633 transitions. [2019-10-14 22:29:55,323 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 633 transitions. Word has length 137 [2019-10-14 22:29:55,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:29:55,325 INFO L462 AbstractCegarLoop]: Abstraction has 501 states and 633 transitions. [2019-10-14 22:29:55,325 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-14 22:29:55,325 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 633 transitions. [2019-10-14 22:29:55,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-14 22:29:55,330 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:29:55,330 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 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, 1, 1, 1, 1, 1, 1] [2019-10-14 22:29:55,330 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:29:55,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:29:55,330 INFO L82 PathProgramCache]: Analyzing trace with hash -2102283821, now seen corresponding path program 1 times [2019-10-14 22:29:55,331 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:29:55,333 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120762860] [2019-10-14 22:29:55,334 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:29:55,334 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:29:55,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:29:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-14 22:29:55,909 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120762860] [2019-10-14 22:29:55,909 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278189299] [2019-10-14 22:29:55,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:29:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:56,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:29:56,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:29:56,161 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 22:29:56,161 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:29:56,162 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5] total 14 [2019-10-14 22:29:56,162 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105205035] [2019-10-14 22:29:56,162 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-14 22:29:56,163 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:29:56,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-14 22:29:56,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-10-14 22:29:56,163 INFO L87 Difference]: Start difference. First operand 501 states and 633 transitions. Second operand 14 states. [2019-10-14 22:29:56,278 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-14 22:29:56,733 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-14 22:29:56,908 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-14 22:29:57,107 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-14 22:29:58,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:29:58,997 INFO L93 Difference]: Finished difference Result 1065 states and 1368 transitions. [2019-10-14 22:29:58,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-14 22:29:58,998 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 142 [2019-10-14 22:29:58,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:29:59,003 INFO L225 Difference]: With dead ends: 1065 [2019-10-14 22:29:59,003 INFO L226 Difference]: Without dead ends: 608 [2019-10-14 22:29:59,005 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2019-10-14 22:29:59,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-10-14 22:29:59,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 509. [2019-10-14 22:29:59,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2019-10-14 22:29:59,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 643 transitions. [2019-10-14 22:29:59,055 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 643 transitions. Word has length 142 [2019-10-14 22:29:59,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:29:59,055 INFO L462 AbstractCegarLoop]: Abstraction has 509 states and 643 transitions. [2019-10-14 22:29:59,055 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-14 22:29:59,055 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 643 transitions. [2019-10-14 22:29:59,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-14 22:29:59,060 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:29:59,060 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:29:59,273 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:29:59,273 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:29:59,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:29:59,274 INFO L82 PathProgramCache]: Analyzing trace with hash 400979770, now seen corresponding path program 2 times [2019-10-14 22:29:59,275 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:29:59,275 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356480006] [2019-10-14 22:29:59,276 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:29:59,276 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:29:59,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:29:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:29:59,966 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-14 22:29:59,966 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356480006] [2019-10-14 22:29:59,966 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961964145] [2019-10-14 22:29:59,967 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:30:00,170 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-14 22:30:00,170 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 22:30:00,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 48 conjunts are in the unsatisfiable core [2019-10-14 22:30:00,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:30:00,578 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-14 22:30:00,578 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:30:00,579 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 24 [2019-10-14 22:30:00,579 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419956806] [2019-10-14 22:30:00,579 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 22:30:00,580 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:30:00,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 22:30:00,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2019-10-14 22:30:00,581 INFO L87 Difference]: Start difference. First operand 509 states and 643 transitions. Second operand 11 states. [2019-10-14 22:30:00,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:30:00,762 INFO L93 Difference]: Finished difference Result 1027 states and 1319 transitions. [2019-10-14 22:30:00,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 22:30:00,762 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 146 [2019-10-14 22:30:00,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:30:00,766 INFO L225 Difference]: With dead ends: 1027 [2019-10-14 22:30:00,766 INFO L226 Difference]: Without dead ends: 562 [2019-10-14 22:30:00,768 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2019-10-14 22:30:00,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2019-10-14 22:30:00,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 521. [2019-10-14 22:30:00,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2019-10-14 22:30:00,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 651 transitions. [2019-10-14 22:30:00,816 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 651 transitions. Word has length 146 [2019-10-14 22:30:00,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:30:00,816 INFO L462 AbstractCegarLoop]: Abstraction has 521 states and 651 transitions. [2019-10-14 22:30:00,817 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 22:30:00,817 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 651 transitions. [2019-10-14 22:30:00,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-14 22:30:00,820 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:30:00,820 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]