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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 20:32:31,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 20:32:31,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 20:32:31,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 20:32:31,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 20:32:31,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 20:32:31,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 20:32:31,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 20:32:31,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 20:32:31,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 20:32:31,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 20:32:31,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 20:32:31,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 20:32:31,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 20:32:31,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 20:32:31,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 20:32:31,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 20:32:31,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 20:32:31,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 20:32:31,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 20:32:31,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 20:32:31,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 20:32:31,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 20:32:31,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 20:32:31,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 20:32:31,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 20:32:31,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 20:32:31,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 20:32:31,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 20:32:31,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 20:32:31,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 20:32:31,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 20:32:31,927 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 20:32:31,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 20:32:31,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 20:32:31,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 20:32:31,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 20:32:31,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 20:32:31,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 20:32:31,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 20:32:31,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 20:32:31,933 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 20:32:31,948 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 20:32:31,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 20:32:31,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 20:32:31,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 20:32:31,951 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 20:32:31,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 20:32:31,951 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 20:32:31,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 20:32:31,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 20:32:31,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 20:32:31,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 20:32:31,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 20:32:31,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 20:32:31,953 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 20:32:31,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 20:32:31,953 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 20:32:31,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 20:32:31,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 20:32:31,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 20:32:31,954 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 20:32:31,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 20:32:31,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 20:32:31,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 20:32:31,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 20:32:31,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 20:32:31,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 20:32:31,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 20:32:31,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 20:32:31,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 20:32:32,240 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 20:32:32,256 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 20:32:32,260 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 20:32:32,261 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 20:32:32,262 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 20:32:32,263 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point.cil.out.i [2019-10-13 20:32:32,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d23cb2476/b56c2e0782514769bd1c6820630441c1/FLAGdb1e6adc9 [2019-10-13 20:32:33,140 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 20:32:33,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point.cil.out.i [2019-10-13 20:32:33,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d23cb2476/b56c2e0782514769bd1c6820630441c1/FLAGdb1e6adc9 [2019-10-13 20:32:33,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d23cb2476/b56c2e0782514769bd1c6820630441c1 [2019-10-13 20:32:33,698 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 20:32:33,699 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 20:32:33,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 20:32:33,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 20:32:33,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 20:32:33,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:32:33" (1/1) ... [2019-10-13 20:32:33,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63604d45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:33, skipping insertion in model container [2019-10-13 20:32:33,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:32:33" (1/1) ... [2019-10-13 20:32:33,716 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 20:32:33,835 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 20:32:35,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:32:35,213 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 20:32:35,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:32:35,545 INFO L192 MainTranslator]: Completed translation [2019-10-13 20:32:35,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:35 WrapperNode [2019-10-13 20:32:35,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 20:32:35,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 20:32:35,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 20:32:35,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 20:32:35,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:35" (1/1) ... [2019-10-13 20:32:35,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:35" (1/1) ... [2019-10-13 20:32:35,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:35" (1/1) ... [2019-10-13 20:32:35,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:35" (1/1) ... [2019-10-13 20:32:35,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:35" (1/1) ... [2019-10-13 20:32:35,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:35" (1/1) ... [2019-10-13 20:32:35,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:35" (1/1) ... [2019-10-13 20:32:35,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 20:32:35,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 20:32:35,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 20:32:35,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 20:32:35,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 20:32:35,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 20:32:35,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 20:32:35,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2019-10-13 20:32:35,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2019-10-13 20:32:35,906 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2019-10-13 20:32:35,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 20:32:35,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-13 20:32:35,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-13 20:32:35,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-13 20:32:35,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-13 20:32:35,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 20:32:35,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-13 20:32:35,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-13 20:32:35,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-13 20:32:35,908 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2019-10-13 20:32:35,908 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2019-10-13 20:32:35,909 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_rfc1201_init [2019-10-13 20:32:35,909 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_rfc1201_exit [2019-10-13 20:32:35,909 INFO L138 BoogieDeclarations]: Found implementation of procedure type_trans [2019-10-13 20:32:35,909 INFO L138 BoogieDeclarations]: Found implementation of procedure rx [2019-10-13 20:32:35,910 INFO L138 BoogieDeclarations]: Found implementation of procedure build_header [2019-10-13 20:32:35,910 INFO L138 BoogieDeclarations]: Found implementation of procedure load_pkt [2019-10-13 20:32:35,910 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_tx [2019-10-13 20:32:35,910 INFO L138 BoogieDeclarations]: Found implementation of procedure continue_tx [2019-10-13 20:32:35,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_ArcProto_1 [2019-10-13 20:32:35,910 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 20:32:35,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-10-13 20:32:35,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-10-13 20:32:35,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-10-13 20:32:35,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-10-13 20:32:35,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-10-13 20:32:35,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_12 [2019-10-13 20:32:35,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2019-10-13 20:32:35,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_15 [2019-10-13 20:32:35,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-10-13 20:32:35,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-13 20:32:35,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-10-13 20:32:35,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-10-13 20:32:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-10-13 20:32:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-13 20:32:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-13 20:32:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-13 20:32:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-13 20:32:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-10-13 20:32:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 20:32:35,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-10-13 20:32:35,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-10-13 20:32:35,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-10-13 20:32:35,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-10-13 20:32:35,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-10-13 20:32:35,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 20:32:35,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_irq [2019-10-13 20:32:35,915 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_unregister_proto [2019-10-13 20:32:35,915 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 20:32:35,915 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-10-13 20:32:35,915 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-10-13 20:32:35,915 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-10-13 20:32:35,916 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 20:32:35,916 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 20:32:35,916 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-13 20:32:35,916 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-13 20:32:35,916 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-13 20:32:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 20:32:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-13 20:32:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2019-10-13 20:32:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 20:32:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-13 20:32:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-13 20:32:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-10-13 20:32:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-10-13 20:32:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-10-13 20:32:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-10-13 20:32:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-10-13 20:32:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_12 [2019-10-13 20:32:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-10-13 20:32:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-10-13 20:32:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-10-13 20:32:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2019-10-13 20:32:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 20:32:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 20:32:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-10-13 20:32:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-10-13 20:32:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-10-13 20:32:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 20:32:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 20:32:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 20:32:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2019-10-13 20:32:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 20:32:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 20:32:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 20:32:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 20:32:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 20:32:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-13 20:32:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-13 20:32:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-13 20:32:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-13 20:32:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-13 20:32:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 20:32:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-13 20:32:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-13 20:32:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_ArcProto_1 [2019-10-13 20:32:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2019-10-13 20:32:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_irq [2019-10-13 20:32:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2019-10-13 20:32:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2019-10-13 20:32:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_15 [2019-10-13 20:32:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_unregister_proto [2019-10-13 20:32:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure type_trans [2019-10-13 20:32:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure rx [2019-10-13 20:32:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure build_header [2019-10-13 20:32:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_tx [2019-10-13 20:32:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure continue_tx [2019-10-13 20:32:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_rfc1201_init [2019-10-13 20:32:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 20:32:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 20:32:35,925 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_rfc1201_exit [2019-10-13 20:32:35,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 20:32:35,925 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2019-10-13 20:32:35,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-13 20:32:35,925 INFO L130 BoogieDeclarations]: Found specification of procedure load_pkt [2019-10-13 20:32:35,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 20:32:35,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 20:32:35,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 20:32:35,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 20:32:35,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-13 20:32:35,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-10-13 20:32:35,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-13 20:32:35,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-10-13 20:32:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-10-13 20:32:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-10-13 20:32:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-13 20:32:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-13 20:32:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-13 20:32:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-13 20:32:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-10-13 20:32:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-10-13 20:32:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-10-13 20:32:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 20:32:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 20:32:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 20:32:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 20:32:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 20:32:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 20:32:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 20:32:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-13 20:32:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-13 20:32:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-13 20:32:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-13 20:32:36,728 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-13 20:32:45,889 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 20:32:45,889 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 20:32:45,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:32:45 BoogieIcfgContainer [2019-10-13 20:32:45,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 20:32:45,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 20:32:45,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 20:32:45,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 20:32:45,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:32:33" (1/3) ... [2019-10-13 20:32:45,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc1f287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:32:45, skipping insertion in model container [2019-10-13 20:32:45,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:35" (2/3) ... [2019-10-13 20:32:45,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc1f287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:32:45, skipping insertion in model container [2019-10-13 20:32:45,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:32:45" (3/3) ... [2019-10-13 20:32:45,904 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point.cil.out.i [2019-10-13 20:32:45,917 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 20:32:45,930 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 20:32:45,945 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 20:32:45,984 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 20:32:45,984 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 20:32:45,984 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 20:32:45,985 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 20:32:45,985 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 20:32:45,986 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 20:32:45,986 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 20:32:45,986 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 20:32:46,028 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states. [2019-10-13 20:32:46,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-13 20:32:46,046 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:32:46,047 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:32:46,049 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:32:46,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:32:46,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1228622639, now seen corresponding path program 1 times [2019-10-13 20:32:46,065 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:32:46,066 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067284937] [2019-10-13 20:32:46,066 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:46,067 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:46,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:32:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:32:46,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:32:46,567 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067284937] [2019-10-13 20:32:46,568 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:32:46,568 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:32:46,569 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828704371] [2019-10-13 20:32:46,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:32:46,578 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:32:46,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:32:46,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:32:46,596 INFO L87 Difference]: Start difference. First operand 398 states. Second operand 3 states. [2019-10-13 20:32:46,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:32:46,870 INFO L93 Difference]: Finished difference Result 1046 states and 1447 transitions. [2019-10-13 20:32:46,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:32:46,873 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2019-10-13 20:32:46,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:32:46,903 INFO L225 Difference]: With dead ends: 1046 [2019-10-13 20:32:46,903 INFO L226 Difference]: Without dead ends: 674 [2019-10-13 20:32:46,914 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:32:46,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2019-10-13 20:32:47,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 674. [2019-10-13 20:32:47,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2019-10-13 20:32:47,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 904 transitions. [2019-10-13 20:32:47,031 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 904 transitions. Word has length 49 [2019-10-13 20:32:47,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:32:47,032 INFO L462 AbstractCegarLoop]: Abstraction has 674 states and 904 transitions. [2019-10-13 20:32:47,032 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:32:47,033 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 904 transitions. [2019-10-13 20:32:47,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 20:32:47,037 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:32:47,037 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:32:47,037 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:32:47,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:32:47,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1842869998, now seen corresponding path program 1 times [2019-10-13 20:32:47,038 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:32:47,039 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543360279] [2019-10-13 20:32:47,039 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:47,039 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:47,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:32:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:32:47,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:32:47,260 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543360279] [2019-10-13 20:32:47,260 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:32:47,260 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 20:32:47,261 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183229759] [2019-10-13 20:32:47,262 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 20:32:47,263 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:32:47,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 20:32:47,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 20:32:47,263 INFO L87 Difference]: Start difference. First operand 674 states and 904 transitions. Second operand 5 states. [2019-10-13 20:32:47,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:32:47,366 INFO L93 Difference]: Finished difference Result 1326 states and 1783 transitions. [2019-10-13 20:32:47,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 20:32:47,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2019-10-13 20:32:47,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:32:47,372 INFO L225 Difference]: With dead ends: 1326 [2019-10-13 20:32:47,372 INFO L226 Difference]: Without dead ends: 673 [2019-10-13 20:32:47,375 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 20:32:47,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2019-10-13 20:32:47,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 673. [2019-10-13 20:32:47,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2019-10-13 20:32:47,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 900 transitions. [2019-10-13 20:32:47,431 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 900 transitions. Word has length 51 [2019-10-13 20:32:47,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:32:47,432 INFO L462 AbstractCegarLoop]: Abstraction has 673 states and 900 transitions. [2019-10-13 20:32:47,432 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 20:32:47,432 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 900 transitions. [2019-10-13 20:32:47,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-13 20:32:47,442 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:32:47,442 INFO L380 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:32:47,442 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:32:47,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:32:47,443 INFO L82 PathProgramCache]: Analyzing trace with hash -663528853, now seen corresponding path program 1 times [2019-10-13 20:32:47,443 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:32:47,443 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080195738] [2019-10-13 20:32:47,444 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:47,444 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:47,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:32:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:32:47,632 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-13 20:32:47,633 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080195738] [2019-10-13 20:32:47,633 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:32:47,633 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 20:32:47,634 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449084738] [2019-10-13 20:32:47,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 20:32:47,635 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:32:47,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 20:32:47,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 20:32:47,635 INFO L87 Difference]: Start difference. First operand 673 states and 900 transitions. Second operand 6 states. [2019-10-13 20:32:48,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:32:48,223 INFO L93 Difference]: Finished difference Result 1982 states and 2688 transitions. [2019-10-13 20:32:48,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 20:32:48,225 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2019-10-13 20:32:48,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:32:48,235 INFO L225 Difference]: With dead ends: 1982 [2019-10-13 20:32:48,236 INFO L226 Difference]: Without dead ends: 1314 [2019-10-13 20:32:48,239 INFO L600 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 [2019-10-13 20:32:48,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2019-10-13 20:32:48,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1314. [2019-10-13 20:32:48,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1314 states. [2019-10-13 20:32:48,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1782 transitions. [2019-10-13 20:32:48,307 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1782 transitions. Word has length 81 [2019-10-13 20:32:48,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:32:48,308 INFO L462 AbstractCegarLoop]: Abstraction has 1314 states and 1782 transitions. [2019-10-13 20:32:48,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 20:32:48,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1782 transitions. [2019-10-13 20:32:48,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-13 20:32:48,317 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:32:48,318 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:32:48,318 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:32:48,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:32:48,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1707844140, now seen corresponding path program 1 times [2019-10-13 20:32:48,319 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:32:48,319 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228562699] [2019-10-13 20:32:48,319 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:48,319 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:48,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:32:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:32:48,563 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 20:32:48,563 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228562699] [2019-10-13 20:32:48,564 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:32:48,564 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 20:32:48,565 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705120382] [2019-10-13 20:32:48,567 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 20:32:48,567 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:32:48,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 20:32:48,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 20:32:48,568 INFO L87 Difference]: Start difference. First operand 1314 states and 1782 transitions. Second operand 5 states. [2019-10-13 20:32:48,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:32:48,646 INFO L93 Difference]: Finished difference Result 2631 states and 3598 transitions. [2019-10-13 20:32:48,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 20:32:48,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2019-10-13 20:32:48,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:32:48,658 INFO L225 Difference]: With dead ends: 2631 [2019-10-13 20:32:48,658 INFO L226 Difference]: Without dead ends: 1338 [2019-10-13 20:32:48,666 INFO L600 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 [2019-10-13 20:32:48,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2019-10-13 20:32:48,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1334. [2019-10-13 20:32:48,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1334 states. [2019-10-13 20:32:48,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1807 transitions. [2019-10-13 20:32:48,741 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1807 transitions. Word has length 134 [2019-10-13 20:32:48,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:32:48,743 INFO L462 AbstractCegarLoop]: Abstraction has 1334 states and 1807 transitions. [2019-10-13 20:32:48,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 20:32:48,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1807 transitions. [2019-10-13 20:32:48,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-13 20:32:48,756 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:32:48,756 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:32:48,756 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:32:48,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:32:48,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1325181798, now seen corresponding path program 1 times [2019-10-13 20:32:48,757 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:32:48,757 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224572318] [2019-10-13 20:32:48,757 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:48,757 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:48,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:32:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:32:49,088 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 20:32:49,089 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224572318] [2019-10-13 20:32:49,089 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:32:49,089 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 20:32:49,089 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274433038] [2019-10-13 20:32:49,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 20:32:49,092 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:32:49,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 20:32:49,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 20:32:49,093 INFO L87 Difference]: Start difference. First operand 1334 states and 1807 transitions. Second operand 4 states. [2019-10-13 20:32:49,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:32:49,164 INFO L93 Difference]: Finished difference Result 2651 states and 3595 transitions. [2019-10-13 20:32:49,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 20:32:49,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2019-10-13 20:32:49,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:32:49,175 INFO L225 Difference]: With dead ends: 2651 [2019-10-13 20:32:49,175 INFO L226 Difference]: Without dead ends: 1335 [2019-10-13 20:32:49,180 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 20:32:49,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2019-10-13 20:32:49,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1335. [2019-10-13 20:32:49,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2019-10-13 20:32:49,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1808 transitions. [2019-10-13 20:32:49,249 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1808 transitions. Word has length 139 [2019-10-13 20:32:49,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:32:49,249 INFO L462 AbstractCegarLoop]: Abstraction has 1335 states and 1808 transitions. [2019-10-13 20:32:49,250 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 20:32:49,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1808 transitions. [2019-10-13 20:32:49,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-13 20:32:49,256 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:32:49,256 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:32:49,256 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:32:49,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:32:49,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1418203813, now seen corresponding path program 1 times [2019-10-13 20:32:49,257 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:32:49,257 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020641742] [2019-10-13 20:32:49,257 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:49,257 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:49,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:32:49,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:32:49,675 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 20:32:49,676 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020641742] [2019-10-13 20:32:49,676 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:32:49,676 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 20:32:49,676 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127854318] [2019-10-13 20:32:49,677 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 20:32:49,678 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:32:49,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 20:32:49,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 20:32:49,682 INFO L87 Difference]: Start difference. First operand 1335 states and 1808 transitions. Second operand 5 states. [2019-10-13 20:32:58,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:32:58,035 INFO L93 Difference]: Finished difference Result 2720 states and 3713 transitions. [2019-10-13 20:32:58,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 20:32:58,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2019-10-13 20:32:58,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:32:58,046 INFO L225 Difference]: With dead ends: 2720 [2019-10-13 20:32:58,047 INFO L226 Difference]: Without dead ends: 1407 [2019-10-13 20:32:58,055 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-13 20:32:58,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2019-10-13 20:32:58,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1359. [2019-10-13 20:32:58,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1359 states. [2019-10-13 20:32:58,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1844 transitions. [2019-10-13 20:32:58,128 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1844 transitions. Word has length 145 [2019-10-13 20:32:58,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:32:58,129 INFO L462 AbstractCegarLoop]: Abstraction has 1359 states and 1844 transitions. [2019-10-13 20:32:58,129 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 20:32:58,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1844 transitions. [2019-10-13 20:32:58,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-13 20:32:58,136 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:32:58,137 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:32:58,137 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:32:58,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:32:58,137 INFO L82 PathProgramCache]: Analyzing trace with hash 3713638, now seen corresponding path program 1 times [2019-10-13 20:32:58,138 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:32:58,138 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213929364] [2019-10-13 20:32:58,138 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:58,138 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:58,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:32:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:32:58,645 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 20:32:58,645 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213929364] [2019-10-13 20:32:58,645 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:32:58,646 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 20:32:58,646 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430135716] [2019-10-13 20:32:58,646 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 20:32:58,647 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:32:58,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 20:32:58,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 20:32:58,647 INFO L87 Difference]: Start difference. First operand 1359 states and 1844 transitions. Second operand 10 states. [2019-10-13 20:33:06,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:33:06,021 INFO L93 Difference]: Finished difference Result 2732 states and 3727 transitions. [2019-10-13 20:33:06,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 20:33:06,022 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 140 [2019-10-13 20:33:06,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:33:06,032 INFO L225 Difference]: With dead ends: 2732 [2019-10-13 20:33:06,032 INFO L226 Difference]: Without dead ends: 1395 [2019-10-13 20:33:06,037 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 20:33:06,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2019-10-13 20:33:06,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1383. [2019-10-13 20:33:06,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1383 states. [2019-10-13 20:33:06,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1868 transitions. [2019-10-13 20:33:06,101 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1868 transitions. Word has length 140 [2019-10-13 20:33:06,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:33:06,103 INFO L462 AbstractCegarLoop]: Abstraction has 1383 states and 1868 transitions. [2019-10-13 20:33:06,103 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 20:33:06,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1868 transitions. [2019-10-13 20:33:06,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-13 20:33:06,109 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:33:06,110 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:33:06,110 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:33:06,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:33:06,110 INFO L82 PathProgramCache]: Analyzing trace with hash 202050087, now seen corresponding path program 1 times [2019-10-13 20:33:06,110 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:33:06,111 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99001564] [2019-10-13 20:33:06,111 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:33:06,111 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:33:06,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:33:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:33:06,565 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 20:33:06,566 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99001564] [2019-10-13 20:33:06,566 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:33:06,566 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 20:33:06,566 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127145138] [2019-10-13 20:33:06,567 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 20:33:06,567 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:33:06,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 20:33:06,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 20:33:06,568 INFO L87 Difference]: Start difference. First operand 1383 states and 1868 transitions. Second operand 10 states.