/usr/bin/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-fb55353 [2019-11-06 20:02:29,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 20:02:29,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 20:02:29,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 20:02:29,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 20:02:29,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 20:02:29,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 20:02:29,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 20:02:29,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 20:02:29,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 20:02:29,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 20:02:29,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 20:02:29,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 20:02:29,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 20:02:29,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 20:02:29,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 20:02:29,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 20:02:29,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 20:02:29,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 20:02:29,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 20:02:29,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 20:02:29,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 20:02:29,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 20:02:29,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 20:02:29,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 20:02:29,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 20:02:29,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 20:02:29,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 20:02:29,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 20:02:29,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 20:02:29,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 20:02:29,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 20:02:29,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 20:02:29,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 20:02:29,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 20:02:29,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 20:02:29,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 20:02:29,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 20:02:29,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 20:02:29,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 20:02:29,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 20:02:29,625 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 [2019-11-06 20:02:29,646 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 20:02:29,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 20:02:29,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 20:02:29,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 20:02:29,649 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 20:02:29,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 20:02:29,650 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 20:02:29,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 20:02:29,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 20:02:29,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 20:02:29,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 20:02:29,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 20:02:29,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 20:02:29,652 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 20:02:29,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 20:02:29,653 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 20:02:29,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 20:02:29,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 20:02:29,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 20:02:29,653 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 20:02:29,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 20:02:29,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 20:02:29,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 20:02:29,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 20:02:29,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 20:02:29,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 20:02:29,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 20:02:29,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 20:02:29,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 20:02:29,923 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 20:02:29,938 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 20:02:29,941 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 20:02:29,943 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 20:02:29,943 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 20:02:29,944 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--capmode.ko-entry_point.cil.out.i [2019-11-06 20:02:30,007 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d07c17837/792ede2dcd7d4b1989b49e751f6caf73/FLAG46c423dcf [2019-11-06 20:02:30,772 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 20:02:30,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--capmode.ko-entry_point.cil.out.i [2019-11-06 20:02:30,811 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d07c17837/792ede2dcd7d4b1989b49e751f6caf73/FLAG46c423dcf [2019-11-06 20:02:31,292 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d07c17837/792ede2dcd7d4b1989b49e751f6caf73 [2019-11-06 20:02:31,300 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 20:02:31,301 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 20:02:31,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 20:02:31,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 20:02:31,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 20:02:31,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:02:31" (1/1) ... [2019-11-06 20:02:31,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e9f3d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:02:31, skipping insertion in model container [2019-11-06 20:02:31,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:02:31" (1/1) ... [2019-11-06 20:02:31,314 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 20:02:31,424 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 20:02:32,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 20:02:32,651 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 20:02:32,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 20:02:32,989 INFO L192 MainTranslator]: Completed translation [2019-11-06 20:02:32,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:02:32 WrapperNode [2019-11-06 20:02:32,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 20:02:32,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 20:02:32,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 20:02:32,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 20:02:33,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:02:32" (1/1) ... [2019-11-06 20:02:33,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:02:32" (1/1) ... [2019-11-06 20:02:33,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:02:32" (1/1) ... [2019-11-06 20:02:33,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:02:32" (1/1) ... [2019-11-06 20:02:33,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:02:32" (1/1) ... [2019-11-06 20:02:33,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:02:32" (1/1) ... [2019-11-06 20:02:33,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:02:32" (1/1) ... [2019-11-06 20:02:33,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 20:02:33,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 20:02:33,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 20:02:33,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 20:02:33,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:02:32" (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 [2019-11-06 20:02:33,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 20:02:33,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 20:02:33,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2019-11-06 20:02:33,350 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_mac_header [2019-11-06 20:02:33,350 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2019-11-06 20:02:33,351 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2019-11-06 20:02:33,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2019-11-06 20:02:33,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-06 20:02:33,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-06 20:02:33,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-11-06 20:02:33,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-11-06 20:02:33,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-11-06 20:02:33,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-11-06 20:02:33,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-11-06 20:02:33,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-11-06 20:02:33,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-11-06 20:02:33,356 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2019-11-06 20:02:33,356 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2019-11-06 20:02:33,356 INFO L138 BoogieDeclarations]: Found implementation of procedure rx [2019-11-06 20:02:33,357 INFO L138 BoogieDeclarations]: Found implementation of procedure build_header [2019-11-06 20:02:33,357 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_tx [2019-11-06 20:02:33,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ack_tx [2019-11-06 20:02:33,357 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_cap_init [2019-11-06 20:02:33,357 INFO L138 BoogieDeclarations]: Found implementation of procedure capmode_module_init [2019-11-06 20:02:33,357 INFO L138 BoogieDeclarations]: Found implementation of procedure capmode_module_exit [2019-11-06 20:02:33,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_ArcProto_1 [2019-11-06 20:02:33,358 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 20:02:33,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-11-06 20:02:33,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-11-06 20:02:33,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-11-06 20:02:33,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-11-06 20:02:33,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-11-06 20:02:33,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_13 [2019-11-06 20:02:33,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_14 [2019-11-06 20:02:33,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_15 [2019-11-06 20:02:33,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_17 [2019-11-06 20:02:33,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-11-06 20:02:33,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-11-06 20:02:33,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-11-06 20:02:33,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-11-06 20:02:33,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-11-06 20:02:33,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-11-06 20:02:33,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-11-06 20:02:33,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-11-06 20:02:33,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-11-06 20:02:33,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-11-06 20:02:33,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-06 20:02:33,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-11-06 20:02:33,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-11-06 20:02:33,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-11-06 20:02:33,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-11-06 20:02:33,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-11-06 20:02:33,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-06 20:02:33,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_irq [2019-11-06 20:02:33,363 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_unregister_proto [2019-11-06 20:02:33,363 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-11-06 20:02:33,363 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-11-06 20:02:33,363 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-11-06 20:02:33,363 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-11-06 20:02:33,364 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-06 20:02:33,364 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-06 20:02:33,364 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-06 20:02:33,364 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-06 20:02:33,365 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-06 20:02:33,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 20:02:33,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-11-06 20:02:33,365 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-11-06 20:02:33,365 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-06 20:02:33,365 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-06 20:02:33,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-11-06 20:02:33,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-11-06 20:02:33,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-11-06 20:02:33,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-11-06 20:02:33,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_13 [2019-11-06 20:02:33,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-11-06 20:02:33,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_14 [2019-11-06 20:02:33,367 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-11-06 20:02:33,367 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-11-06 20:02:33,368 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-11-06 20:02:33,368 INFO L130 BoogieDeclarations]: Found specification of procedure skb_mac_header [2019-11-06 20:02:33,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 20:02:33,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 20:02:33,369 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2019-11-06 20:02:33,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 20:02:33,369 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2019-11-06 20:02:33,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-06 20:02:33,369 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-11-06 20:02:33,370 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-11-06 20:02:33,370 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-11-06 20:02:33,370 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 20:02:33,370 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-06 20:02:33,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 20:02:33,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2019-11-06 20:02:33,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-06 20:02:33,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-06 20:02:33,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 20:02:33,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2019-11-06 20:02:33,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 20:02:33,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-06 20:02:33,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-06 20:02:33,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-06 20:02:33,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-11-06 20:02:33,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-11-06 20:02:33,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-11-06 20:02:33,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-11-06 20:02:33,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-11-06 20:02:33,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-11-06 20:02:33,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_ArcProto_1 [2019-11-06 20:02:33,374 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2019-11-06 20:02:33,374 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_irq [2019-11-06 20:02:33,374 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2019-11-06 20:02:33,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_15 [2019-11-06 20:02:33,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_17 [2019-11-06 20:02:33,374 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_unregister_proto [2019-11-06 20:02:33,374 INFO L130 BoogieDeclarations]: Found specification of procedure rx [2019-11-06 20:02:33,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 20:02:33,375 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2019-11-06 20:02:33,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 20:02:33,375 INFO L130 BoogieDeclarations]: Found specification of procedure build_header [2019-11-06 20:02:33,375 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_tx [2019-11-06 20:02:33,376 INFO L130 BoogieDeclarations]: Found specification of procedure ack_tx [2019-11-06 20:02:33,376 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_cap_init [2019-11-06 20:02:33,376 INFO L130 BoogieDeclarations]: Found specification of procedure capmode_module_init [2019-11-06 20:02:33,376 INFO L130 BoogieDeclarations]: Found specification of procedure capmode_module_exit [2019-11-06 20:02:33,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-06 20:02:33,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-06 20:02:33,378 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 20:02:33,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-06 20:02:33,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 20:02:33,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-11-06 20:02:33,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-11-06 20:02:33,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-11-06 20:02:33,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-11-06 20:02:33,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-11-06 20:02:33,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-11-06 20:02:33,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-11-06 20:02:33,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-11-06 20:02:33,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-11-06 20:02:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-11-06 20:02:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-11-06 20:02:33,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-11-06 20:02:33,384 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-06 20:02:33,384 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 20:02:33,385 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-06 20:02:33,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 20:02:33,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 20:02:33,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-06 20:02:33,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 20:02:33,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-06 20:02:33,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-11-06 20:02:33,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-06 20:02:33,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-06 20:02:34,158 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-11-06 20:02:34,784 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 20:02:34,784 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-06 20:02:34,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:02:34 BoogieIcfgContainer [2019-11-06 20:02:34,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 20:02:34,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 20:02:34,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 20:02:34,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 20:02:34,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:02:31" (1/3) ... [2019-11-06 20:02:34,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62cc179f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:02:34, skipping insertion in model container [2019-11-06 20:02:34,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:02:32" (2/3) ... [2019-11-06 20:02:34,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62cc179f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:02:34, skipping insertion in model container [2019-11-06 20:02:34,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:02:34" (3/3) ... [2019-11-06 20:02:34,793 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 [2019-11-06 20:02:34,804 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 20:02:34,813 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 20:02:34,826 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 20:02:34,855 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 20:02:34,855 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 20:02:34,856 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 20:02:34,856 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 20:02:34,856 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 20:02:34,856 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 20:02:34,856 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 20:02:34,856 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 20:02:34,885 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states. [2019-11-06 20:02:34,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-06 20:02:34,901 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 20:02:34,902 INFO L410 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] [2019-11-06 20:02:34,906 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 20:02:34,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 20:02:34,911 INFO L82 PathProgramCache]: Analyzing trace with hash 840315728, now seen corresponding path program 1 times [2019-11-06 20:02:34,921 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 20:02:34,921 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160565247] [2019-11-06 20:02:34,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 20:02:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:35,625 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-11-06 20:02:35,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:35,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 20:02:35,855 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160565247] [2019-11-06 20:02:35,856 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 20:02:35,856 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 20:02:35,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611493573] [2019-11-06 20:02:35,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 20:02:35,862 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 20:02:35,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 20:02:35,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-06 20:02:35,878 INFO L87 Difference]: Start difference. First operand 322 states. Second operand 8 states. [2019-11-06 20:02:36,128 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-11-06 20:02:36,728 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2019-11-06 20:02:37,620 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2019-11-06 20:02:41,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 20:02:41,143 INFO L93 Difference]: Finished difference Result 988 states and 1328 transitions. [2019-11-06 20:02:41,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-06 20:02:41,145 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2019-11-06 20:02:41,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 20:02:41,167 INFO L225 Difference]: With dead ends: 988 [2019-11-06 20:02:41,167 INFO L226 Difference]: Without dead ends: 697 [2019-11-06 20:02:41,174 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-11-06 20:02:41,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2019-11-06 20:02:41,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 503. [2019-11-06 20:02:41,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2019-11-06 20:02:41,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 625 transitions. [2019-11-06 20:02:41,334 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 625 transitions. Word has length 53 [2019-11-06 20:02:41,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 20:02:41,335 INFO L462 AbstractCegarLoop]: Abstraction has 503 states and 625 transitions. [2019-11-06 20:02:41,335 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 20:02:41,335 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 625 transitions. [2019-11-06 20:02:41,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-06 20:02:41,344 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 20:02:41,344 INFO L410 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] [2019-11-06 20:02:41,344 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 20:02:41,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 20:02:41,345 INFO L82 PathProgramCache]: Analyzing trace with hash -30629207, now seen corresponding path program 1 times [2019-11-06 20:02:41,345 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 20:02:41,345 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778848135] [2019-11-06 20:02:41,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 20:02:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:41,655 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-11-06 20:02:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:41,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 20:02:41,859 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778848135] [2019-11-06 20:02:41,859 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 20:02:41,859 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 20:02:41,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797810710] [2019-11-06 20:02:41,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 20:02:41,862 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 20:02:41,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 20:02:41,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-06 20:02:41,863 INFO L87 Difference]: Start difference. First operand 503 states and 625 transitions. Second operand 9 states. [2019-11-06 20:02:42,125 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 20:02:42,861 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 20:02:43,299 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-11-06 20:02:45,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 20:02:45,666 INFO L93 Difference]: Finished difference Result 1185 states and 1521 transitions. [2019-11-06 20:02:45,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-06 20:02:45,667 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2019-11-06 20:02:45,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 20:02:45,676 INFO L225 Difference]: With dead ends: 1185 [2019-11-06 20:02:45,679 INFO L226 Difference]: Without dead ends: 703 [2019-11-06 20:02:45,682 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2019-11-06 20:02:45,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2019-11-06 20:02:45,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 504. [2019-11-06 20:02:45,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2019-11-06 20:02:45,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 626 transitions. [2019-11-06 20:02:45,776 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 626 transitions. Word has length 61 [2019-11-06 20:02:45,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 20:02:45,776 INFO L462 AbstractCegarLoop]: Abstraction has 504 states and 626 transitions. [2019-11-06 20:02:45,776 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 20:02:45,777 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 626 transitions. [2019-11-06 20:02:45,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-06 20:02:45,779 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 20:02:45,780 INFO L410 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] [2019-11-06 20:02:45,780 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 20:02:45,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 20:02:45,780 INFO L82 PathProgramCache]: Analyzing trace with hash -636442480, now seen corresponding path program 1 times [2019-11-06 20:02:45,781 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 20:02:45,781 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171803671] [2019-11-06 20:02:45,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 20:02:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:46,070 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-11-06 20:02:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:46,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 20:02:46,298 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171803671] [2019-11-06 20:02:46,298 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209915728] [2019-11-06 20:02:46,298 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 [2019-11-06 20:02:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:46,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 20:02:46,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 20:02:46,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 20:02:46,634 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 20:02:46,635 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2019-11-06 20:02:46,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047837254] [2019-11-06 20:02:46,637 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 20:02:46,637 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 20:02:46,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 20:02:46,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-11-06 20:02:46,638 INFO L87 Difference]: Start difference. First operand 504 states and 626 transitions. Second operand 4 states. [2019-11-06 20:02:46,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 20:02:46,746 INFO L93 Difference]: Finished difference Result 991 states and 1234 transitions. [2019-11-06 20:02:46,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 20:02:46,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2019-11-06 20:02:46,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 20:02:46,751 INFO L225 Difference]: With dead ends: 991 [2019-11-06 20:02:46,751 INFO L226 Difference]: Without dead ends: 505 [2019-11-06 20:02:46,754 INFO L630 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 [2019-11-06 20:02:46,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2019-11-06 20:02:46,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 505. [2019-11-06 20:02:46,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2019-11-06 20:02:46,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 627 transitions. [2019-11-06 20:02:46,902 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 627 transitions. Word has length 65 [2019-11-06 20:02:46,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 20:02:46,903 INFO L462 AbstractCegarLoop]: Abstraction has 505 states and 627 transitions. [2019-11-06 20:02:46,903 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 20:02:46,903 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 627 transitions. [2019-11-06 20:02:46,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-11-06 20:02:46,905 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 20:02:46,905 INFO L410 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] [2019-11-06 20:02:47,111 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 20:02:47,112 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 20:02:47,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 20:02:47,112 INFO L82 PathProgramCache]: Analyzing trace with hash 104413225, now seen corresponding path program 1 times [2019-11-06 20:02:47,113 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 20:02:47,113 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684899532] [2019-11-06 20:02:47,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 20:02:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:47,393 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-11-06 20:02:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:47,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 20:02:47,596 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684899532] [2019-11-06 20:02:47,596 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102131847] [2019-11-06 20:02:47,596 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 [2019-11-06 20:02:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:47,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 20:02:47,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 20:02:47,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 20:02:47,860 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 20:02:47,860 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4] total 12 [2019-11-06 20:02:47,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52037849] [2019-11-06 20:02:47,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 20:02:47,861 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 20:02:47,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 20:02:47,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-11-06 20:02:47,862 INFO L87 Difference]: Start difference. First operand 505 states and 627 transitions. Second operand 12 states. [2019-11-06 20:02:48,088 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 20:02:48,450 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2019-11-06 20:02:48,724 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2019-11-06 20:02:49,512 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-11-06 20:02:49,870 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-11-06 20:02:50,342 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2019-11-06 20:02:53,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 20:02:53,015 INFO L93 Difference]: Finished difference Result 1203 states and 1540 transitions. [2019-11-06 20:02:53,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-06 20:02:53,016 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2019-11-06 20:02:53,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 20:02:53,026 INFO L225 Difference]: With dead ends: 1203 [2019-11-06 20:02:53,026 INFO L226 Difference]: Without dead ends: 720 [2019-11-06 20:02:53,029 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2019-11-06 20:02:53,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2019-11-06 20:02:53,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 509. [2019-11-06 20:02:53,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2019-11-06 20:02:53,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 631 transitions. [2019-11-06 20:02:53,138 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 631 transitions. Word has length 66 [2019-11-06 20:02:53,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 20:02:53,140 INFO L462 AbstractCegarLoop]: Abstraction has 509 states and 631 transitions. [2019-11-06 20:02:53,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 20:02:53,140 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 631 transitions. [2019-11-06 20:02:53,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-06 20:02:53,142 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 20:02:53,144 INFO L410 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] [2019-11-06 20:02:53,353 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 20:02:53,353 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 20:02:53,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 20:02:53,354 INFO L82 PathProgramCache]: Analyzing trace with hash 920026640, now seen corresponding path program 2 times [2019-11-06 20:02:53,354 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 20:02:53,354 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48707040] [2019-11-06 20:02:53,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 20:02:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:53,666 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-11-06 20:02:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:53,919 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 20:02:53,920 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48707040] [2019-11-06 20:02:53,920 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492201991] [2019-11-06 20:02:53,920 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 [2019-11-06 20:02:54,231 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-06 20:02:54,231 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 20:02:54,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-06 20:02:54,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 20:02:54,280 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-06 20:02:54,281 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 20:02:54,281 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 14 [2019-11-06 20:02:54,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366320561] [2019-11-06 20:02:54,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 20:02:54,282 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 20:02:54,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 20:02:54,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-11-06 20:02:54,283 INFO L87 Difference]: Start difference. First operand 509 states and 631 transitions. Second operand 5 states. [2019-11-06 20:02:54,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 20:02:54,393 INFO L93 Difference]: Finished difference Result 995 states and 1236 transitions. [2019-11-06 20:02:54,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 20:02:54,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2019-11-06 20:02:54,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 20:02:54,398 INFO L225 Difference]: With dead ends: 995 [2019-11-06 20:02:54,398 INFO L226 Difference]: Without dead ends: 508 [2019-11-06 20:02:54,400 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-11-06 20:02:54,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2019-11-06 20:02:54,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2019-11-06 20:02:54,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2019-11-06 20:02:54,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 628 transitions. [2019-11-06 20:02:54,462 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 628 transitions. Word has length 70 [2019-11-06 20:02:54,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 20:02:54,464 INFO L462 AbstractCegarLoop]: Abstraction has 508 states and 628 transitions. [2019-11-06 20:02:54,464 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 20:02:54,464 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 628 transitions. [2019-11-06 20:02:54,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-11-06 20:02:54,468 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 20:02:54,469 INFO L410 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] [2019-11-06 20:02:54,674 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 20:02:54,675 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 20:02:54,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 20:02:54,675 INFO L82 PathProgramCache]: Analyzing trace with hash 230160454, now seen corresponding path program 1 times [2019-11-06 20:02:54,675 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 20:02:54,676 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468405409] [2019-11-06 20:02:54,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 20:02:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:55,039 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-11-06 20:02:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:02:55,401 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-06 20:02:55,402 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468405409] [2019-11-06 20:02:55,402 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 20:02:55,402 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-11-06 20:02:55,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773019595] [2019-11-06 20:02:55,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-06 20:02:55,403 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 20:02:55,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-06 20:02:55,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2019-11-06 20:02:55,404 INFO L87 Difference]: Start difference. First operand 508 states and 628 transitions. Second operand 13 states. [2019-11-06 20:02:55,626 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 20:02:55,966 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2019-11-06 20:02:56,233 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2019-11-06 20:02:57,270 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2019-11-06 20:02:58,967 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-11-06 20:03:01,368 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2019-11-06 20:03:02,154 WARN L191 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 171 [2019-11-06 20:03:02,395 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-11-06 20:03:02,630 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-11-06 20:03:03,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 20:03:03,568 INFO L93 Difference]: Finished difference Result 1707 states and 2214 transitions. [2019-11-06 20:03:03,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-06 20:03:03,569 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 108 [2019-11-06 20:03:03,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 20:03:03,577 INFO L225 Difference]: With dead ends: 1707 [2019-11-06 20:03:03,578 INFO L226 Difference]: Without dead ends: 1205 [2019-11-06 20:03:03,581 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2019-11-06 20:03:03,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2019-11-06 20:03:03,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1103. [2019-11-06 20:03:03,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2019-11-06 20:03:03,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1415 transitions. [2019-11-06 20:03:03,697 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1415 transitions. Word has length 108 [2019-11-06 20:03:03,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 20:03:03,698 INFO L462 AbstractCegarLoop]: Abstraction has 1103 states and 1415 transitions. [2019-11-06 20:03:03,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-06 20:03:03,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1415 transitions. [2019-11-06 20:03:03,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-11-06 20:03:03,703 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 20:03:03,705 INFO L410 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] [2019-11-06 20:03:03,705 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 20:03:03,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 20:03:03,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1042491787, now seen corresponding path program 1 times [2019-11-06 20:03:03,706 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 20:03:03,706 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255222962] [2019-11-06 20:03:03,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 20:03:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:03,975 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-11-06 20:03:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:04,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:04,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-11-06 20:03:04,394 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255222962] [2019-11-06 20:03:04,394 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087602145] [2019-11-06 20:03:04,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 20:03:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:03:04,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 20:03:04,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 20:03:04,739 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-06 20:03:04,739 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 20:03:04,740 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5] total 14 [2019-11-06 20:03:04,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359839924] [2019-11-06 20:03:04,741 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-06 20:03:04,741 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 20:03:04,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-06 20:03:04,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-11-06 20:03:04,742 INFO L87 Difference]: Start difference. First operand 1103 states and 1415 transitions. Second operand 14 states. [2019-11-06 20:03:05,044 WARN L191 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 166