java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--capmode.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:30:24,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:30:24,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:30:24,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:30:24,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:30:24,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:30:24,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:30:24,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:30:24,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:30:24,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:30:24,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:30:24,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:30:24,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:30:24,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:30:24,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:30:24,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:30:24,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:30:24,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:30:24,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:30:24,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:30:24,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:30:24,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:30:24,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:30:24,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:30:24,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 18:30:24,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 18:30:24,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 18:30:24,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 18:30:24,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 18:30:24,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 18:30:24,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:30:24,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:30:24,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:30:24,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:30:24,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:30:24,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:30:24,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:30:24,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:30:24,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:30:24,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:30:24,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:30:24,366 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 18:30:24,380 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:30:24,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:30:24,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:30:24,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:30:24,382 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:30:24,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:30:24,383 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:30:24,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:30:24,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:30:24,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:30:24,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:30:24,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:30:24,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:30:24,386 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:30:24,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:30:24,387 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:30:24,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:30:24,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:30:24,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:30:24,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:30:24,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:30:24,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:30:24,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:30:24,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:30:24,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:30:24,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:30:24,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:30:24,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:30:24,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:30:24,659 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:30:24,674 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:30:24,678 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:30:24,680 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:30:24,680 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:30:24,682 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--capmode.ko-entry_point.cil.out.i [2019-10-13 18:30:24,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc61ed8fe/f9ce9866dcc54643b4bbd7d2b00f1c02/FLAGb5295416e [2019-10-13 18:30:25,572 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:30:25,573 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--capmode.ko-entry_point.cil.out.i [2019-10-13 18:30:25,618 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc61ed8fe/f9ce9866dcc54643b4bbd7d2b00f1c02/FLAGb5295416e [2019-10-13 18:30:26,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc61ed8fe/f9ce9866dcc54643b4bbd7d2b00f1c02 [2019-10-13 18:30:26,110 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:30:26,112 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:30:26,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:30:26,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:30:26,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:30:26,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:30:26" (1/1) ... [2019-10-13 18:30:26,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7730a066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:30:26, skipping insertion in model container [2019-10-13 18:30:26,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:30:26" (1/1) ... [2019-10-13 18:30:26,128 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:30:26,237 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:30:27,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:30:27,391 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:30:27,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:30:27,860 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:30:27,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:30:27 WrapperNode [2019-10-13 18:30:27,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:30:27,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:30:27,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:30:27,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:30:27,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:30:27" (1/1) ... [2019-10-13 18:30:27,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:30:27" (1/1) ... [2019-10-13 18:30:27,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:30:27" (1/1) ... [2019-10-13 18:30:27,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:30:27" (1/1) ... [2019-10-13 18:30:28,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:30:27" (1/1) ... [2019-10-13 18:30:28,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:30:27" (1/1) ... [2019-10-13 18:30:28,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:30:27" (1/1) ... [2019-10-13 18:30:28,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:30:28,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:30:28,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:30:28,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:30:28,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:30:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:30:28,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:30:28,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:30:28,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2019-10-13 18:30:28,197 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_mac_header [2019-10-13 18:30:28,197 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2019-10-13 18:30:28,198 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2019-10-13 18:30:28,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2019-10-13 18:30:28,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 18:30:28,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-13 18:30:28,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-13 18:30:28,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-13 18:30:28,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-13 18:30:28,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 18:30:28,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-13 18:30:28,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-13 18:30:28,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-13 18:30:28,255 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2019-10-13 18:30:28,256 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2019-10-13 18:30:28,256 INFO L138 BoogieDeclarations]: Found implementation of procedure rx [2019-10-13 18:30:28,257 INFO L138 BoogieDeclarations]: Found implementation of procedure build_header [2019-10-13 18:30:28,257 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_tx [2019-10-13 18:30:28,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ack_tx [2019-10-13 18:30:28,257 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_cap_init [2019-10-13 18:30:28,257 INFO L138 BoogieDeclarations]: Found implementation of procedure capmode_module_init [2019-10-13 18:30:28,258 INFO L138 BoogieDeclarations]: Found implementation of procedure capmode_module_exit [2019-10-13 18:30:28,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_ArcProto_1 [2019-10-13 18:30:28,258 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:30:28,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-10-13 18:30:28,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-10-13 18:30:28,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-10-13 18:30:28,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-10-13 18:30:28,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-10-13 18:30:28,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_13 [2019-10-13 18:30:28,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_14 [2019-10-13 18:30:28,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_15 [2019-10-13 18:30:28,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_17 [2019-10-13 18:30:28,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-10-13 18:30:28,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-13 18:30:28,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-10-13 18:30:28,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-10-13 18:30:28,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-10-13 18:30:28,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-13 18:30:28,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-13 18:30:28,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-13 18:30:28,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-13 18:30:28,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-10-13 18:30:28,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 18:30:28,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-10-13 18:30:28,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-10-13 18:30:28,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-10-13 18:30:28,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-10-13 18:30:28,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-10-13 18:30:28,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 18:30:28,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_irq [2019-10-13 18:30:28,265 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_unregister_proto [2019-10-13 18:30:28,265 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 18:30:28,265 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-10-13 18:30:28,265 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-10-13 18:30:28,265 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-10-13 18:30:28,266 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 18:30:28,266 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 18:30:28,266 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-13 18:30:28,267 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-13 18:30:28,267 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-13 18:30:28,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:30:28,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-13 18:30:28,267 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 18:30:28,267 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-13 18:30:28,268 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-13 18:30:28,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-10-13 18:30:28,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-10-13 18:30:28,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-10-13 18:30:28,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-10-13 18:30:28,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_13 [2019-10-13 18:30:28,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-10-13 18:30:28,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_14 [2019-10-13 18:30:28,271 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-10-13 18:30:28,271 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-10-13 18:30:28,272 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-10-13 18:30:28,272 INFO L130 BoogieDeclarations]: Found specification of procedure skb_mac_header [2019-10-13 18:30:28,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 18:30:28,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 18:30:28,274 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2019-10-13 18:30:28,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 18:30:28,274 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2019-10-13 18:30:28,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-13 18:30:28,274 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-10-13 18:30:28,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-10-13 18:30:28,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-10-13 18:30:28,276 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 18:30:28,276 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 18:30:28,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:30:28,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2019-10-13 18:30:28,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 18:30:28,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 18:30:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 18:30:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2019-10-13 18:30:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 18:30:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-13 18:30:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 18:30:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-13 18:30:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-13 18:30:28,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-13 18:30:28,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-13 18:30:28,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 18:30:28,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-13 18:30:28,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-13 18:30:28,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_ArcProto_1 [2019-10-13 18:30:28,279 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2019-10-13 18:30:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_irq [2019-10-13 18:30:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2019-10-13 18:30:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_15 [2019-10-13 18:30:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_17 [2019-10-13 18:30:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_unregister_proto [2019-10-13 18:30:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure rx [2019-10-13 18:30:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 18:30:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2019-10-13 18:30:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 18:30:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure build_header [2019-10-13 18:30:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_tx [2019-10-13 18:30:28,282 INFO L130 BoogieDeclarations]: Found specification of procedure ack_tx [2019-10-13 18:30:28,282 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_cap_init [2019-10-13 18:30:28,282 INFO L130 BoogieDeclarations]: Found specification of procedure capmode_module_init [2019-10-13 18:30:28,282 INFO L130 BoogieDeclarations]: Found specification of procedure capmode_module_exit [2019-10-13 18:30:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 18:30:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 18:30:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:30:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-13 18:30:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 18:30:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-10-13 18:30:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-13 18:30:28,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-10-13 18:30:28,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-10-13 18:30:28,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-10-13 18:30:28,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-13 18:30:28,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-13 18:30:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-13 18:30:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-13 18:30:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-10-13 18:30:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-10-13 18:30:28,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-10-13 18:30:28,294 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 18:30:28,294 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 18:30:28,294 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 18:30:28,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:30:28,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 18:30:28,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 18:30:28,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:30:28,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-13 18:30:28,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-13 18:30:28,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-13 18:30:28,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-13 18:30:29,331 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-13 18:30:30,011 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:30:30,012 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 18:30:30,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:30:30 BoogieIcfgContainer [2019-10-13 18:30:30,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:30:30,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:30:30,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:30:30,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:30:30,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:30:26" (1/3) ... [2019-10-13 18:30:30,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e2377e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:30:30, skipping insertion in model container [2019-10-13 18:30:30,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:30:27" (2/3) ... [2019-10-13 18:30:30,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e2377e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:30:30, skipping insertion in model container [2019-10-13 18:30:30,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:30:30" (3/3) ... [2019-10-13 18:30:30,023 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--capmode.ko-entry_point.cil.out.i [2019-10-13 18:30:30,034 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:30:30,045 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:30:30,095 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:30:30,123 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:30:30,123 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:30:30,123 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:30:30,123 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:30:30,123 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:30:30,124 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:30:30,124 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:30:30,124 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:30:30,152 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states. [2019-10-13 18:30:30,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 18:30:30,163 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:30:30,165 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:30:30,167 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:30:30,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:30:30,174 INFO L82 PathProgramCache]: Analyzing trace with hash 840315728, now seen corresponding path program 1 times [2019-10-13 18:30:30,184 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:30:30,184 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188151251] [2019-10-13 18:30:30,185 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:30,185 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:30,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:30:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:30,888 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-10-13 18:30:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:31,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:30:31,113 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188151251] [2019-10-13 18:30:31,114 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:30:31,114 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:30:31,115 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146351836] [2019-10-13 18:30:31,121 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 18:30:31,122 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:30:31,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 18:30:31,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-13 18:30:31,141 INFO L87 Difference]: Start difference. First operand 322 states. Second operand 8 states. [2019-10-13 18:30:31,438 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-13 18:30:32,236 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2019-10-13 18:30:33,276 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2019-10-13 18:30:37,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:30:37,557 INFO L93 Difference]: Finished difference Result 988 states and 1328 transitions. [2019-10-13 18:30:37,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 18:30:37,560 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2019-10-13 18:30:37,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:30:37,585 INFO L225 Difference]: With dead ends: 988 [2019-10-13 18:30:37,586 INFO L226 Difference]: Without dead ends: 697 [2019-10-13 18:30:37,594 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-10-13 18:30:37,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2019-10-13 18:30:37,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 503. [2019-10-13 18:30:37,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2019-10-13 18:30:37,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 625 transitions. [2019-10-13 18:30:37,769 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 625 transitions. Word has length 53 [2019-10-13 18:30:37,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:30:37,770 INFO L462 AbstractCegarLoop]: Abstraction has 503 states and 625 transitions. [2019-10-13 18:30:37,770 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 18:30:37,770 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 625 transitions. [2019-10-13 18:30:37,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-13 18:30:37,786 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:30:37,786 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:30:37,787 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:30:37,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:30:37,787 INFO L82 PathProgramCache]: Analyzing trace with hash -30629207, now seen corresponding path program 1 times [2019-10-13 18:30:37,787 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:30:37,788 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699358792] [2019-10-13 18:30:37,788 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:37,788 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:37,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:30:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:38,198 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-10-13 18:30:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:38,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:30:38,406 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699358792] [2019-10-13 18:30:38,406 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:30:38,406 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 18:30:38,406 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885873880] [2019-10-13 18:30:38,409 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:30:38,409 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:30:38,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:30:38,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:30:38,410 INFO L87 Difference]: Start difference. First operand 503 states and 625 transitions. Second operand 9 states. [2019-10-13 18:30:38,664 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 18:30:39,512 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 18:30:39,969 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-13 18:30:42,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:30:42,366 INFO L93 Difference]: Finished difference Result 1185 states and 1521 transitions. [2019-10-13 18:30:42,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 18:30:42,371 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2019-10-13 18:30:42,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:30:42,378 INFO L225 Difference]: With dead ends: 1185 [2019-10-13 18:30:42,378 INFO L226 Difference]: Without dead ends: 703 [2019-10-13 18:30:42,384 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2019-10-13 18:30:42,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2019-10-13 18:30:42,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 504. [2019-10-13 18:30:42,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2019-10-13 18:30:42,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 626 transitions. [2019-10-13 18:30:42,468 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 626 transitions. Word has length 61 [2019-10-13 18:30:42,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:30:42,468 INFO L462 AbstractCegarLoop]: Abstraction has 504 states and 626 transitions. [2019-10-13 18:30:42,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:30:42,468 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 626 transitions. [2019-10-13 18:30:42,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-13 18:30:42,470 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:30:42,470 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:30:42,471 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:30:42,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:30:42,471 INFO L82 PathProgramCache]: Analyzing trace with hash -636442480, now seen corresponding path program 1 times [2019-10-13 18:30:42,471 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:30:42,472 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765538602] [2019-10-13 18:30:42,472 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:42,472 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:42,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:30:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:42,752 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-10-13 18:30:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:43,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:30:43,032 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765538602] [2019-10-13 18:30:43,032 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967489211] [2019-10-13 18:30:43,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:30:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:43,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 18:30:43,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:30:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 18:30:43,384 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:30:43,384 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2019-10-13 18:30:43,384 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323865408] [2019-10-13 18:30:43,385 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 18:30:43,385 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:30:43,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 18:30:43,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-10-13 18:30:43,386 INFO L87 Difference]: Start difference. First operand 504 states and 626 transitions. Second operand 4 states. [2019-10-13 18:30:43,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:30:43,493 INFO L93 Difference]: Finished difference Result 991 states and 1234 transitions. [2019-10-13 18:30:43,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 18:30:43,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2019-10-13 18:30:43,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:30:43,499 INFO L225 Difference]: With dead ends: 991 [2019-10-13 18:30:43,499 INFO L226 Difference]: Without dead ends: 505 [2019-10-13 18:30:43,503 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-13 18:30:43,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2019-10-13 18:30:43,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 505. [2019-10-13 18:30:43,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2019-10-13 18:30:43,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 627 transitions. [2019-10-13 18:30:43,588 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 627 transitions. Word has length 65 [2019-10-13 18:30:43,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:30:43,590 INFO L462 AbstractCegarLoop]: Abstraction has 505 states and 627 transitions. [2019-10-13 18:30:43,590 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 18:30:43,590 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 627 transitions. [2019-10-13 18:30:43,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-13 18:30:43,592 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:30:43,592 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:30:43,797 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:30:43,798 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:30:43,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:30:43,798 INFO L82 PathProgramCache]: Analyzing trace with hash 104413225, now seen corresponding path program 1 times [2019-10-13 18:30:43,798 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:30:43,798 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150340666] [2019-10-13 18:30:43,798 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:43,799 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:43,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:30:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:44,118 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-10-13 18:30:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:44,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 18:30:44,333 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150340666] [2019-10-13 18:30:44,334 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622378184] [2019-10-13 18:30:44,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:30:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:44,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 18:30:44,618 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:30:44,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 18:30:44,632 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:30:44,632 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4] total 12 [2019-10-13 18:30:44,632 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912651652] [2019-10-13 18:30:44,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 18:30:44,633 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:30:44,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 18:30:44,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-13 18:30:44,634 INFO L87 Difference]: Start difference. First operand 505 states and 627 transitions. Second operand 12 states. [2019-10-13 18:30:44,926 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 18:30:45,344 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2019-10-13 18:30:45,657 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2019-10-13 18:30:46,375 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-13 18:30:46,817 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-13 18:30:47,332 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2019-10-13 18:30:50,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:30:50,193 INFO L93 Difference]: Finished difference Result 1203 states and 1540 transitions. [2019-10-13 18:30:50,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 18:30:50,194 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2019-10-13 18:30:50,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:30:50,199 INFO L225 Difference]: With dead ends: 1203 [2019-10-13 18:30:50,199 INFO L226 Difference]: Without dead ends: 720 [2019-10-13 18:30:50,202 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2019-10-13 18:30:50,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2019-10-13 18:30:50,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 509. [2019-10-13 18:30:50,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2019-10-13 18:30:50,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 631 transitions. [2019-10-13 18:30:50,291 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 631 transitions. Word has length 66 [2019-10-13 18:30:50,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:30:50,291 INFO L462 AbstractCegarLoop]: Abstraction has 509 states and 631 transitions. [2019-10-13 18:30:50,291 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 18:30:50,292 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 631 transitions. [2019-10-13 18:30:50,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-13 18:30:50,293 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:30:50,293 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:30:50,541 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:30:50,542 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:30:50,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:30:50,543 INFO L82 PathProgramCache]: Analyzing trace with hash 920026640, now seen corresponding path program 2 times [2019-10-13 18:30:50,543 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:30:50,544 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953789343] [2019-10-13 18:30:50,544 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:50,544 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:50,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:30:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:50,874 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-10-13 18:30:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:51,109 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 18:30:51,109 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953789343] [2019-10-13 18:30:51,109 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263658605] [2019-10-13 18:30:51,110 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:30:51,359 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-13 18:30:51,360 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 18:30:51,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 18:30:51,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:30:51,391 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 18:30:51,392 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:30:51,392 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 14 [2019-10-13 18:30:51,392 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617972522] [2019-10-13 18:30:51,393 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:30:51,393 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:30:51,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:30:51,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-10-13 18:30:51,394 INFO L87 Difference]: Start difference. First operand 509 states and 631 transitions. Second operand 5 states. [2019-10-13 18:30:51,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:30:51,504 INFO L93 Difference]: Finished difference Result 995 states and 1236 transitions. [2019-10-13 18:30:51,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 18:30:51,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2019-10-13 18:30:51,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:30:51,508 INFO L225 Difference]: With dead ends: 995 [2019-10-13 18:30:51,509 INFO L226 Difference]: Without dead ends: 508 [2019-10-13 18:30:51,510 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-13 18:30:51,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2019-10-13 18:30:51,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2019-10-13 18:30:51,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2019-10-13 18:30:51,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 628 transitions. [2019-10-13 18:30:51,567 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 628 transitions. Word has length 70 [2019-10-13 18:30:51,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:30:51,570 INFO L462 AbstractCegarLoop]: Abstraction has 508 states and 628 transitions. [2019-10-13 18:30:51,570 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:30:51,570 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 628 transitions. [2019-10-13 18:30:51,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-13 18:30:51,572 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:30:51,573 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:30:51,778 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:30:51,778 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:30:51,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:30:51,779 INFO L82 PathProgramCache]: Analyzing trace with hash 230160454, now seen corresponding path program 1 times [2019-10-13 18:30:51,779 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:30:51,780 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962095518] [2019-10-13 18:30:51,780 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:51,780 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:30:51,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:30:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:52,195 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-10-13 18:30:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:30:52,586 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 18:30:52,587 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962095518] [2019-10-13 18:30:52,587 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:30:52,587 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-13 18:30:52,588 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559921329] [2019-10-13 18:30:52,588 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-13 18:30:52,588 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:30:52,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-13 18:30:52,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2019-10-13 18:30:52,589 INFO L87 Difference]: Start difference. First operand 508 states and 628 transitions. Second operand 13 states. [2019-10-13 18:30:52,888 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 18:30:53,335 WARN L191 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2019-10-13 18:30:53,668 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2019-10-13 18:30:54,795 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2019-10-13 18:30:56,720 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-13 18:30:59,470 WARN L191 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2019-10-13 18:31:00,425 WARN L191 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 171 [2019-10-13 18:31:00,728 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-13 18:31:01,036 WARN L191 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-13 18:31:02,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:31:02,155 INFO L93 Difference]: Finished difference Result 1707 states and 2214 transitions. [2019-10-13 18:31:02,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-13 18:31:02,159 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 108 [2019-10-13 18:31:02,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:31:02,167 INFO L225 Difference]: With dead ends: 1707 [2019-10-13 18:31:02,168 INFO L226 Difference]: Without dead ends: 1205 [2019-10-13 18:31:02,171 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2019-10-13 18:31:02,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2019-10-13 18:31:02,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1103. [2019-10-13 18:31:02,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2019-10-13 18:31:02,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1415 transitions. [2019-10-13 18:31:02,297 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1415 transitions. Word has length 108 [2019-10-13 18:31:02,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:31:02,297 INFO L462 AbstractCegarLoop]: Abstraction has 1103 states and 1415 transitions. [2019-10-13 18:31:02,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-13 18:31:02,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1415 transitions. [2019-10-13 18:31:02,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 18:31:02,304 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:31:02,305 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:31:02,305 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:31:02,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:31:02,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1042491787, now seen corresponding path program 1 times [2019-10-13 18:31:02,306 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:31:02,306 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511053678] [2019-10-13 18:31:02,306 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:31:02,306 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:31:02,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:31:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:02,657 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-10-13 18:31:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:03,110 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-13 18:31:03,111 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511053678] [2019-10-13 18:31:03,111 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855409814] [2019-10-13 18:31:03,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true