java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 08:52:40,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 08:52:40,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 08:52:40,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 08:52:40,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 08:52:40,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 08:52:40,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 08:52:40,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 08:52:40,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 08:52:40,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 08:52:40,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 08:52:40,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 08:52:40,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 08:52:40,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 08:52:40,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 08:52:40,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 08:52:40,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 08:52:40,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 08:52:40,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 08:52:40,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 08:52:40,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 08:52:40,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 08:52:40,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 08:52:40,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 08:52:40,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 08:52:40,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 08:52:40,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 08:52:40,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 08:52:40,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 08:52:40,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 08:52:40,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 08:52:40,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 08:52:40,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 08:52:40,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 08:52:40,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 08:52:40,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 08:52:40,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 08:52:40,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 08:52:40,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 08:52:40,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 08:52:40,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 08:52:40,582 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 [2019-10-07 08:52:40,606 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 08:52:40,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 08:52:40,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 08:52:40,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 08:52:40,611 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 08:52:40,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 08:52:40,611 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 08:52:40,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 08:52:40,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 08:52:40,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 08:52:40,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 08:52:40,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 08:52:40,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 08:52:40,614 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 08:52:40,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 08:52:40,614 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 08:52:40,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 08:52:40,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 08:52:40,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 08:52:40,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 08:52:40,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 08:52:40,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 08:52:40,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 08:52:40,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 08:52:40,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 08:52:40,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 08:52:40,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 08:52:40,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 08:52:40,617 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 08:52:40,926 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 08:52:40,944 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 08:52:40,948 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 08:52:40,950 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 08:52:40,950 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 08:52:40,950 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2019-10-07 08:52:41,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93738129b/88b3e5bab4c64211b0264a5b0aee9ab3/FLAGa6187927f [2019-10-07 08:52:41,734 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 08:52:41,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2019-10-07 08:52:41,777 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93738129b/88b3e5bab4c64211b0264a5b0aee9ab3/FLAGa6187927f [2019-10-07 08:52:41,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93738129b/88b3e5bab4c64211b0264a5b0aee9ab3 [2019-10-07 08:52:41,860 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 08:52:41,861 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 08:52:41,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 08:52:41,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 08:52:41,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 08:52:41,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 08:52:41" (1/1) ... [2019-10-07 08:52:41,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cee1a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 08:52:41, skipping insertion in model container [2019-10-07 08:52:41,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 08:52:41" (1/1) ... [2019-10-07 08:52:41,878 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 08:52:41,988 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 08:52:43,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 08:52:43,176 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 08:52:43,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 08:52:43,468 INFO L192 MainTranslator]: Completed translation [2019-10-07 08:52:43,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 08:52:43 WrapperNode [2019-10-07 08:52:43,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 08:52:43,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 08:52:43,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 08:52:43,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 08:52:43,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 08:52:43" (1/1) ... [2019-10-07 08:52:43,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 08:52:43" (1/1) ... [2019-10-07 08:52:43,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 08:52:43" (1/1) ... [2019-10-07 08:52:43,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 08:52:43" (1/1) ... [2019-10-07 08:52:43,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 08:52:43" (1/1) ... [2019-10-07 08:52:43,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 08:52:43" (1/1) ... [2019-10-07 08:52:43,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 08:52:43" (1/1) ... [2019-10-07 08:52:43,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 08:52:43,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 08:52:43,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 08:52:43,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 08:52:43,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 08:52:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 08:52:43,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 08:52:43,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 08:52:43,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2019-10-07 08:52:43,819 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2019-10-07 08:52:43,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-07 08:52:43,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-07 08:52:43,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-07 08:52:43,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-07 08:52:43,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-07 08:52:43,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-07 08:52:43,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-07 08:52:43,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-07 08:52:43,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-07 08:52:43,824 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2019-10-07 08:52:43,825 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_raw_init [2019-10-07 08:52:43,825 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_raw_exit [2019-10-07 08:52:43,828 INFO L138 BoogieDeclarations]: Found implementation of procedure rx [2019-10-07 08:52:43,828 INFO L138 BoogieDeclarations]: Found implementation of procedure build_header [2019-10-07 08:52:43,828 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_tx [2019-10-07 08:52:43,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_ArcProto_1 [2019-10-07 08:52:43,829 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 08:52:43,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-10-07 08:52:43,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-10-07 08:52:43,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-10-07 08:52:43,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-10-07 08:52:43,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-10-07 08:52:43,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_13 [2019-10-07 08:52:43,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_14 [2019-10-07 08:52:43,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_15 [2019-10-07 08:52:43,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-10-07 08:52:43,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-07 08:52:43,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-10-07 08:52:43,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-10-07 08:52:43,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-10-07 08:52:43,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-07 08:52:43,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-07 08:52:43,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-07 08:52:43,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-07 08:52:43,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-10-07 08:52:43,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-07 08:52:43,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-10-07 08:52:43,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-10-07 08:52:43,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-10-07 08:52:43,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-10-07 08:52:43,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-10-07 08:52:43,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-07 08:52:43,837 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_unregister_proto [2019-10-07 08:52:43,838 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-07 08:52:43,838 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-10-07 08:52:43,838 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-10-07 08:52:43,839 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-10-07 08:52:43,839 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-07 08:52:43,841 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-07 08:52:43,841 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-07 08:52:43,841 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-07 08:52:43,842 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-07 08:52:43,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 08:52:43,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-07 08:52:43,843 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-07 08:52:43,843 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-07 08:52:43,844 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-07 08:52:43,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-10-07 08:52:43,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-10-07 08:52:43,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-10-07 08:52:43,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-10-07 08:52:43,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_13 [2019-10-07 08:52:43,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-10-07 08:52:43,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_14 [2019-10-07 08:52:43,846 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-10-07 08:52:43,846 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-10-07 08:52:43,847 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-10-07 08:52:43,847 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2019-10-07 08:52:43,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 08:52:43,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 08:52:43,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-10-07 08:52:43,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-10-07 08:52:43,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-10-07 08:52:43,850 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 08:52:43,851 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-07 08:52:43,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 08:52:43,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2019-10-07 08:52:43,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-07 08:52:43,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-07 08:52:43,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-07 08:52:43,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-07 08:52:43,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 08:52:43,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-07 08:52:43,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-07 08:52:43,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-07 08:52:43,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-07 08:52:43,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-07 08:52:43,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-07 08:52:43,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-07 08:52:43,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-07 08:52:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_ArcProto_1 [2019-10-07 08:52:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2019-10-07 08:52:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_15 [2019-10-07 08:52:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_unregister_proto [2019-10-07 08:52:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure rx [2019-10-07 08:52:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure build_header [2019-10-07 08:52:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_tx [2019-10-07 08:52:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_raw_init [2019-10-07 08:52:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 08:52:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 08:52:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_raw_exit [2019-10-07 08:52:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-07 08:52:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2019-10-07 08:52:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 08:52:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-07 08:52:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-07 08:52:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 08:52:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-07 08:52:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 08:52:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-10-07 08:52:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-07 08:52:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-10-07 08:52:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-10-07 08:52:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-10-07 08:52:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-07 08:52:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-07 08:52:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-07 08:52:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-07 08:52:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-10-07 08:52:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-10-07 08:52:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-10-07 08:52:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-07 08:52:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 08:52:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-07 08:52:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 08:52:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 08:52:43,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-07 08:52:43,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 08:52:43,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-07 08:52:43,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-07 08:52:43,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-07 08:52:43,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-07 08:52:44,667 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-07 08:52:45,758 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 08:52:45,759 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-07 08:52:45,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 08:52:45 BoogieIcfgContainer [2019-10-07 08:52:45,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 08:52:45,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 08:52:45,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 08:52:45,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 08:52:45,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 08:52:41" (1/3) ... [2019-10-07 08:52:45,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd380df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 08:52:45, skipping insertion in model container [2019-10-07 08:52:45,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 08:52:43" (2/3) ... [2019-10-07 08:52:45,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd380df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 08:52:45, skipping insertion in model container [2019-10-07 08:52:45,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 08:52:45" (3/3) ... [2019-10-07 08:52:45,768 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 [2019-10-07 08:52:45,778 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 08:52:45,787 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 08:52:45,799 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 08:52:45,827 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 08:52:45,828 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 08:52:45,828 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 08:52:45,828 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 08:52:45,828 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 08:52:45,828 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 08:52:45,828 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 08:52:45,829 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 08:52:45,851 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states. [2019-10-07 08:52:45,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-07 08:52:45,860 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 08:52:45,861 INFO L385 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] [2019-10-07 08:52:45,863 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 08:52:45,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 08:52:45,869 INFO L82 PathProgramCache]: Analyzing trace with hash -689591432, now seen corresponding path program 1 times [2019-10-07 08:52:45,878 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 08:52:45,878 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 08:52:45,878 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 08:52:45,878 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 08:52:45,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 08:52:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 08:52:46,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 08:52:46,272 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 08:52:46,272 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 08:52:46,273 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 08:52:46,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 08:52:46,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 08:52:46,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 08:52:46,295 INFO L87 Difference]: Start difference. First operand 212 states. Second operand 3 states. [2019-10-07 08:52:46,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 08:52:46,464 INFO L93 Difference]: Finished difference Result 502 states and 648 transitions. [2019-10-07 08:52:46,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 08:52:46,466 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2019-10-07 08:52:46,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 08:52:46,482 INFO L225 Difference]: With dead ends: 502 [2019-10-07 08:52:46,482 INFO L226 Difference]: Without dead ends: 314 [2019-10-07 08:52:46,488 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 08:52:46,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2019-10-07 08:52:46,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2019-10-07 08:52:46,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2019-10-07 08:52:46,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 384 transitions. [2019-10-07 08:52:46,621 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 384 transitions. Word has length 44 [2019-10-07 08:52:46,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 08:52:46,621 INFO L462 AbstractCegarLoop]: Abstraction has 314 states and 384 transitions. [2019-10-07 08:52:46,621 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 08:52:46,622 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 384 transitions. [2019-10-07 08:52:46,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-07 08:52:46,627 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 08:52:46,627 INFO L385 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] [2019-10-07 08:52:46,627 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 08:52:46,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 08:52:46,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1799100232, now seen corresponding path program 1 times [2019-10-07 08:52:46,628 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 08:52:46,628 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 08:52:46,628 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 08:52:46,628 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 08:52:46,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 08:52:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 08:52:46,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 08:52:46,785 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 08:52:46,786 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 08:52:46,786 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 08:52:46,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 08:52:46,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 08:52:46,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 08:52:46,790 INFO L87 Difference]: Start difference. First operand 314 states and 384 transitions. Second operand 3 states. [2019-10-07 08:52:46,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 08:52:46,846 INFO L93 Difference]: Finished difference Result 611 states and 751 transitions. [2019-10-07 08:52:46,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 08:52:46,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2019-10-07 08:52:46,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 08:52:46,851 INFO L225 Difference]: With dead ends: 611 [2019-10-07 08:52:46,854 INFO L226 Difference]: Without dead ends: 315 [2019-10-07 08:52:46,859 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 08:52:46,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2019-10-07 08:52:46,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2019-10-07 08:52:46,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2019-10-07 08:52:46,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 385 transitions. [2019-10-07 08:52:46,885 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 385 transitions. Word has length 45 [2019-10-07 08:52:46,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 08:52:46,885 INFO L462 AbstractCegarLoop]: Abstraction has 315 states and 385 transitions. [2019-10-07 08:52:46,885 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 08:52:46,885 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 385 transitions. [2019-10-07 08:52:46,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-07 08:52:46,887 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 08:52:46,887 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 08:52:46,888 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 08:52:46,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 08:52:46,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1042078497, now seen corresponding path program 1 times [2019-10-07 08:52:46,888 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 08:52:46,889 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 08:52:46,889 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 08:52:46,889 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 08:52:46,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 08:52:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 08:52:47,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 08:52:47,029 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 08:52:47,029 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 08:52:47,030 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 08:52:47,032 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 08:52:47,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 08:52:47,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 08:52:47,033 INFO L87 Difference]: Start difference. First operand 315 states and 385 transitions. Second operand 5 states. [2019-10-07 08:52:47,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 08:52:47,130 INFO L93 Difference]: Finished difference Result 611 states and 748 transitions. [2019-10-07 08:52:47,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 08:52:47,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2019-10-07 08:52:47,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 08:52:47,139 INFO L225 Difference]: With dead ends: 611 [2019-10-07 08:52:47,139 INFO L226 Difference]: Without dead ends: 314 [2019-10-07 08:52:47,143 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-07 08:52:47,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2019-10-07 08:52:47,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2019-10-07 08:52:47,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2019-10-07 08:52:47,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 381 transitions. [2019-10-07 08:52:47,171 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 381 transitions. Word has length 46 [2019-10-07 08:52:47,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 08:52:47,172 INFO L462 AbstractCegarLoop]: Abstraction has 314 states and 381 transitions. [2019-10-07 08:52:47,172 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 08:52:47,172 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 381 transitions. [2019-10-07 08:52:47,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-07 08:52:47,176 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 08:52:47,176 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 08:52:47,176 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 08:52:47,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 08:52:47,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1264666465, now seen corresponding path program 1 times [2019-10-07 08:52:47,177 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 08:52:47,177 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 08:52:47,177 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 08:52:47,177 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 08:52:47,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 08:52:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 08:52:47,423 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 08:52:47,424 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 08:52:47,425 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 08:52:47,425 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 08:52:47,427 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 08:52:47,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 08:52:47,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-07 08:52:47,428 INFO L87 Difference]: Start difference. First operand 314 states and 381 transitions. Second operand 6 states. [2019-10-07 08:52:47,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 08:52:47,933 INFO L93 Difference]: Finished difference Result 618 states and 760 transitions. [2019-10-07 08:52:47,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 08:52:47,933 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2019-10-07 08:52:47,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 08:52:47,946 INFO L225 Difference]: With dead ends: 618 [2019-10-07 08:52:47,946 INFO L226 Difference]: Without dead ends: 601 [2019-10-07 08:52:47,947 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-07 08:52:47,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2019-10-07 08:52:48,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2019-10-07 08:52:48,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2019-10-07 08:52:48,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 743 transitions. [2019-10-07 08:52:48,007 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 743 transitions. Word has length 74 [2019-10-07 08:52:48,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 08:52:48,007 INFO L462 AbstractCegarLoop]: Abstraction has 601 states and 743 transitions. [2019-10-07 08:52:48,008 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 08:52:48,008 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 743 transitions. [2019-10-07 08:52:48,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-07 08:52:48,015 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 08:52:48,016 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 08:52:48,016 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 08:52:48,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 08:52:48,017 INFO L82 PathProgramCache]: Analyzing trace with hash -756196454, now seen corresponding path program 1 times [2019-10-07 08:52:48,017 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 08:52:48,017 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 08:52:48,017 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 08:52:48,017 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 08:52:48,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 08:52:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 08:52:48,165 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-07 08:52:48,165 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 08:52:48,166 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 08:52:48,166 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 08:52:48,168 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 08:52:48,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 08:52:48,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 08:52:48,169 INFO L87 Difference]: Start difference. First operand 601 states and 743 transitions. Second operand 3 states. [2019-10-07 08:52:48,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 08:52:48,220 INFO L93 Difference]: Finished difference Result 994 states and 1232 transitions. [2019-10-07 08:52:48,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 08:52:48,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 115 [2019-10-07 08:52:48,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 08:52:48,224 INFO L225 Difference]: With dead ends: 994 [2019-10-07 08:52:48,225 INFO L226 Difference]: Without dead ends: 411 [2019-10-07 08:52:48,227 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 08:52:48,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2019-10-07 08:52:48,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 380. [2019-10-07 08:52:48,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2019-10-07 08:52:48,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 474 transitions. [2019-10-07 08:52:48,252 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 474 transitions. Word has length 115 [2019-10-07 08:52:48,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 08:52:48,253 INFO L462 AbstractCegarLoop]: Abstraction has 380 states and 474 transitions. [2019-10-07 08:52:48,253 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 08:52:48,253 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 474 transitions. [2019-10-07 08:52:48,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-07 08:52:48,258 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 08:52:48,259 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 08:52:48,259 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 08:52:48,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 08:52:48,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1792266860, now seen corresponding path program 2 times [2019-10-07 08:52:48,260 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 08:52:48,260 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 08:52:48,261 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 08:52:48,261 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 08:52:48,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 08:52:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 08:52:48,423 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-07 08:52:48,423 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 08:52:48,424 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 08:52:48,424 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 08:52:48,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 08:52:48,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 08:52:48,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 08:52:48,425 INFO L87 Difference]: Start difference. First operand 380 states and 474 transitions. Second operand 5 states. [2019-10-07 08:52:48,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 08:52:48,470 INFO L93 Difference]: Finished difference Result 735 states and 932 transitions. [2019-10-07 08:52:48,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 08:52:48,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2019-10-07 08:52:48,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 08:52:48,475 INFO L225 Difference]: With dead ends: 735 [2019-10-07 08:52:48,475 INFO L226 Difference]: Without dead ends: 394 [2019-10-07 08:52:48,477 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 08:52:48,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2019-10-07 08:52:48,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 390. [2019-10-07 08:52:48,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2019-10-07 08:52:48,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 488 transitions. [2019-10-07 08:52:48,503 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 488 transitions. Word has length 115 [2019-10-07 08:52:48,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 08:52:48,505 INFO L462 AbstractCegarLoop]: Abstraction has 390 states and 488 transitions. [2019-10-07 08:52:48,505 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 08:52:48,506 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 488 transitions. [2019-10-07 08:52:48,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-07 08:52:48,542 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 08:52:48,542 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 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] [2019-10-07 08:52:48,543 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 08:52:48,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 08:52:48,543 INFO L82 PathProgramCache]: Analyzing trace with hash 444222310, now seen corresponding path program 1 times [2019-10-07 08:52:48,543 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 08:52:48,543 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 08:52:48,544 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 08:52:48,544 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 08:52:48,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 08:52:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 08:52:48,666 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-07 08:52:48,667 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 08:52:48,667 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 08:52:48,667 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 08:52:48,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 08:52:48,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 08:52:48,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 08:52:48,674 INFO L87 Difference]: Start difference. First operand 390 states and 488 transitions. Second operand 4 states. [2019-10-07 08:52:48,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 08:52:48,710 INFO L93 Difference]: Finished difference Result 757 states and 952 transitions. [2019-10-07 08:52:48,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 08:52:48,711 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-07 08:52:48,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 08:52:48,714 INFO L225 Difference]: With dead ends: 757 [2019-10-07 08:52:48,714 INFO L226 Difference]: Without dead ends: 391 [2019-10-07 08:52:48,717 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 08:52:48,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2019-10-07 08:52:48,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2019-10-07 08:52:48,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2019-10-07 08:52:48,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 489 transitions. [2019-10-07 08:52:48,739 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 489 transitions. Word has length 119 [2019-10-07 08:52:48,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 08:52:48,740 INFO L462 AbstractCegarLoop]: Abstraction has 391 states and 489 transitions. [2019-10-07 08:52:48,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 08:52:48,740 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 489 transitions. [2019-10-07 08:52:48,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-07 08:52:48,742 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 08:52:48,742 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 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] [2019-10-07 08:52:48,743 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 08:52:48,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 08:52:48,743 INFO L82 PathProgramCache]: Analyzing trace with hash 671415591, now seen corresponding path program 1 times [2019-10-07 08:52:48,743 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 08:52:48,743 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 08:52:48,744 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 08:52:48,744 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 08:52:48,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 08:52:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 08:52:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-07 08:52:48,880 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 08:52:48,880 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 08:52:48,880 INFO L95 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 [2019-10-07 08:52:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 08:52:49,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 08:52:49,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 08:52:49,255 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-07 08:52:49,256 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 08:52:49,537 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-07 08:52:49,539 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 08:52:49,569 INFO L162 IcfgInterpreter]: Started Sifa with 100 locations of interest [2019-10-07 08:52:49,570 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 08:52:49,576 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 08:52:49,584 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 08:52:49,585 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 08:52:50,748 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 97 for LOIs [2019-10-07 08:52:50,888 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 255 for LOIs [2019-10-07 08:52:51,165 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2019-10-07 08:52:51,589 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2019-10-07 08:52:51,857 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2019-10-07 08:52:52,266 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 08:52:52,267 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 08:52:52,275 INFO L168 Benchmark]: Toolchain (without parser) took 10413.99 ms. Allocated memory was 142.6 MB in the beginning and 381.7 MB in the end (delta: 239.1 MB). Free memory was 92.8 MB in the beginning and 223.5 MB in the end (delta: -130.7 MB). Peak memory consumption was 108.4 MB. Max. memory is 7.1 GB. [2019-10-07 08:52:52,276 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 142.6 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 08:52:52,277 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1609.29 ms. Allocated memory was 142.6 MB in the beginning and 205.5 MB in the end (delta: 62.9 MB). Free memory was 92.6 MB in the beginning and 107.7 MB in the end (delta: -15.1 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. [2019-10-07 08:52:52,277 INFO L168 Benchmark]: Boogie Preprocessor took 237.60 ms. Allocated memory is still 205.5 MB. Free memory was 107.7 MB in the beginning and 102.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. [2019-10-07 08:52:52,278 INFO L168 Benchmark]: RCFGBuilder took 2050.62 ms. Allocated memory was 205.5 MB in the beginning and 270.0 MB in the end (delta: 64.5 MB). Free memory was 102.2 MB in the beginning and 209.0 MB in the end (delta: -106.7 MB). Peak memory consumption was 70.4 MB. Max. memory is 7.1 GB. [2019-10-07 08:52:52,279 INFO L168 Benchmark]: TraceAbstraction took 6511.95 ms. Allocated memory was 270.0 MB in the beginning and 381.7 MB in the end (delta: 111.7 MB). Free memory was 209.0 MB in the beginning and 223.5 MB in the end (delta: -14.5 MB). Peak memory consumption was 97.1 MB. Max. memory is 7.1 GB. [2019-10-07 08:52:52,286 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 142.6 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1609.29 ms. Allocated memory was 142.6 MB in the beginning and 205.5 MB in the end (delta: 62.9 MB). Free memory was 92.6 MB in the beginning and 107.7 MB in the end (delta: -15.1 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 237.60 ms. Allocated memory is still 205.5 MB. Free memory was 107.7 MB in the beginning and 102.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2050.62 ms. Allocated memory was 205.5 MB in the beginning and 270.0 MB in the end (delta: 64.5 MB). Free memory was 102.2 MB in the beginning and 209.0 MB in the end (delta: -106.7 MB). Peak memory consumption was 70.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6511.95 ms. Allocated memory was 270.0 MB in the beginning and 381.7 MB in the end (delta: 111.7 MB). Free memory was 209.0 MB in the beginning and 223.5 MB in the end (delta: -14.5 MB). Peak memory consumption was 97.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...