/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-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--ethernet--cadence--at91_ether.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 11:51:02,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:51:02,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:51:02,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:51:02,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:51:02,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:51:02,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:51:02,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:51:02,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:51:02,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:51:02,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:51:02,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:51:02,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:51:02,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:51:02,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:51:02,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:51:02,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:51:02,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:51:02,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:51:02,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:51:02,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:51:02,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:51:02,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:51:02,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:51:02,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:51:02,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:51:02,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:51:02,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:51:02,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:51:02,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:51:02,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:51:02,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:51:02,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:51:02,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:51:02,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:51:02,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:51:02,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:51:02,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:51:02,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:51:02,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:51:02,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:51:02,400 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-18 11:51:02,439 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:51:02,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:51:02,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:51:02,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:51:02,442 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:51:02,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:51:02,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:51:02,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:51:02,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:51:02,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:51:02,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:51:02,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:51:02,444 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:51:02,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:51:02,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:51:02,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:51:02,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:51:02,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:51:02,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:51:02,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:51:02,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:51:02,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:51:02,448 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:51:02,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:51:02,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:51:02,449 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:51:02,449 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 11:51:02,449 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true [2020-08-18 11:51:02,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:51:02,773 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:51:02,776 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:51:02,778 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:51:02,779 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:51:02,779 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--cadence--at91_ether.ko-entry_point.cil.out.i [2020-08-18 11:51:02,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba7f6c0b9/29609a07f9724426bd96108f3c36b735/FLAGac21931b9 [2020-08-18 11:51:03,669 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:51:03,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--cadence--at91_ether.ko-entry_point.cil.out.i [2020-08-18 11:51:03,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba7f6c0b9/29609a07f9724426bd96108f3c36b735/FLAGac21931b9 [2020-08-18 11:51:04,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba7f6c0b9/29609a07f9724426bd96108f3c36b735 [2020-08-18 11:51:04,200 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:51:04,202 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:51:04,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:51:04,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:51:04,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:51:04,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:51:04" (1/1) ... [2020-08-18 11:51:04,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ebdb89e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:04, skipping insertion in model container [2020-08-18 11:51:04,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:51:04" (1/1) ... [2020-08-18 11:51:04,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:51:04,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:51:06,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:51:06,084 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:51:06,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:51:06,772 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:51:06,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:06 WrapperNode [2020-08-18 11:51:06,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:51:06,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:51:06,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:51:06,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:51:06,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:06" (1/1) ... [2020-08-18 11:51:06,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:06" (1/1) ... [2020-08-18 11:51:06,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:06" (1/1) ... [2020-08-18 11:51:06,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:06" (1/1) ... [2020-08-18 11:51:06,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:06" (1/1) ... [2020-08-18 11:51:07,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:06" (1/1) ... [2020-08-18 11:51:07,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:06" (1/1) ... [2020-08-18 11:51:07,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:51:07,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:51:07,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:51:07,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:51:07,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-18 11:51:07,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:51:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:51:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2020-08-18 11:51:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2020-08-18 11:51:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~~gfp_t~0~X~$Pointer$~TO~$Pointer$ [2020-08-18 11:51:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~~dma_addr_t~0~X~$Pointer$~TO~VOID [2020-08-18 11:51:07,131 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2020-08-18 11:51:07,131 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2020-08-18 11:51:07,131 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2020-08-18 11:51:07,131 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2020-08-18 11:51:07,131 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2020-08-18 11:51:07,132 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2020-08-18 11:51:07,132 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_disable [2020-08-18 11:51:07,132 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2020-08-18 11:51:07,132 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2020-08-18 11:51:07,132 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2020-08-18 11:51:07,133 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2020-08-18 11:51:07,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __readl [2020-08-18 11:51:07,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __writel [2020-08-18 11:51:07,134 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2020-08-18 11:51:07,134 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_name [2020-08-18 11:51:07,134 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2020-08-18 11:51:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-08-18 11:51:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-18 11:51:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_platdata [2020-08-18 11:51:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2020-08-18 11:51:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure is_device_dma_capable [2020-08-18 11:51:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2020-08-18 11:51:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2020-08-18 11:51:07,136 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2020-08-18 11:51:07,136 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_coherent_mask [2020-08-18 11:51:07,136 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_coherent_gfp_flags [2020-08-18 11:51:07,136 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2020-08-18 11:51:07,136 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2020-08-18 11:51:07,136 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2020-08-18 11:51:07,136 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 11:51:07,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 11:51:07,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 11:51:07,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 11:51:07,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 11:51:07,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 11:51:07,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 11:51:07,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 11:51:07,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 11:51:07,138 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_request_irq [2020-08-18 11:51:07,138 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2020-08-18 11:51:07,138 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-18 11:51:07,138 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2020-08-18 11:51:07,138 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2020-08-18 11:51:07,138 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_wake_queue [2020-08-18 11:51:07,139 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2020-08-18 11:51:07,139 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2020-08-18 11:51:07,139 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2020-08-18 11:51:07,139 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2020-08-18 11:51:07,139 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2020-08-18 11:51:07,139 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2020-08-18 11:51:07,139 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_set_drvdata [2020-08-18 11:51:07,140 INFO L138 BoogieDeclarations]: Found implementation of procedure of_get_phy_mode [2020-08-18 11:51:07,140 INFO L138 BoogieDeclarations]: Found implementation of procedure of_get_mac_address [2020-08-18 11:51:07,140 INFO L138 BoogieDeclarations]: Found implementation of procedure at91ether_start [2020-08-18 11:51:07,140 INFO L138 BoogieDeclarations]: Found implementation of procedure at91ether_open [2020-08-18 11:51:07,140 INFO L138 BoogieDeclarations]: Found implementation of procedure at91ether_close [2020-08-18 11:51:07,140 INFO L138 BoogieDeclarations]: Found implementation of procedure at91ether_start_xmit [2020-08-18 11:51:07,141 INFO L138 BoogieDeclarations]: Found implementation of procedure at91ether_rx [2020-08-18 11:51:07,141 INFO L138 BoogieDeclarations]: Found implementation of procedure at91ether_interrupt [2020-08-18 11:51:07,141 INFO L138 BoogieDeclarations]: Found implementation of procedure at91ether_poll_controller [2020-08-18 11:51:07,141 INFO L138 BoogieDeclarations]: Found implementation of procedure at91ether_probe [2020-08-18 11:51:07,141 INFO L138 BoogieDeclarations]: Found implementation of procedure at91ether_remove [2020-08-18 11:51:07,141 INFO L138 BoogieDeclarations]: Found implementation of procedure at91ether_suspend [2020-08-18 11:51:07,141 INFO L138 BoogieDeclarations]: Found implementation of procedure at91ether_resume [2020-08-18 11:51:07,142 INFO L138 BoogieDeclarations]: Found implementation of procedure at91ether_driver_init [2020-08-18 11:51:07,142 INFO L138 BoogieDeclarations]: Found implementation of procedure at91ether_driver_exit [2020-08-18 11:51:07,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_platform_driver_1 [2020-08-18 11:51:07,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_net_device_ops_2 [2020-08-18 11:51:07,142 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:51:07,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2020-08-18 11:51:07,143 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2020-08-18 11:51:07,143 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2020-08-18 11:51:07,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-18 11:51:07,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-18 11:51:07,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-18 11:51:07,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-18 11:51:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-18 11:51:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb_12 [2020-08-18 11:51:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2020-08-18 11:51:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_14 [2020-08-18 11:51:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev_15 [2020-08-18 11:51:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev_16 [2020-08-18 11:51:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev_17 [2020-08-18 11:51:07,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev_18 [2020-08-18 11:51:07,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-18 11:51:07,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-18 11:51:07,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-18 11:51:07,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-18 11:51:07,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-18 11:51:07,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-18 11:51:07,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-18 11:51:07,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-18 11:51:07,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-18 11:51:07,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-18 11:51:07,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 11:51:07,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-18 11:51:07,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-18 11:51:07,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-18 11:51:07,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-18 11:51:07,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-18 11:51:07,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 11:51:07,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_irq [2020-08-18 11:51:07,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2020-08-18 11:51:07,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2020-08-18 11:51:07,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2020-08-18 11:51:07,148 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_etherdev_mqs [2020-08-18 11:51:07,148 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_disable [2020-08-18 11:51:07,148 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_enable [2020-08-18 11:51:07,148 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_alloc_coherent [2020-08-18 11:51:07,148 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_free_coherent [2020-08-18 11:51:07,148 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2020-08-18 11:51:07,148 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2020-08-18 11:51:07,149 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_clk_get [2020-08-18 11:51:07,149 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_ioremap [2020-08-18 11:51:07,149 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_request_threaded_irq [2020-08-18 11:51:07,149 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2020-08-18 11:51:07,149 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2020-08-18 11:51:07,149 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2020-08-18 11:51:07,150 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2020-08-18 11:51:07,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_setup [2020-08-18 11:51:07,150 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2020-08-18 11:51:07,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ndo_init_2 [2020-08-18 11:51:07,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ndo_uninit_2 [2020-08-18 11:51:07,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_1 [2020-08-18 11:51:07,150 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_get_hwaddr [2020-08-18 11:51:07,150 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_get_stats [2020-08-18 11:51:07,151 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_ioctl [2020-08-18 11:51:07,151 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_mii_init [2020-08-18 11:51:07,151 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_set_hwaddr [2020-08-18 11:51:07,151 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_set_rx_mode [2020-08-18 11:51:07,151 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2020-08-18 11:51:07,152 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2020-08-18 11:51:07,152 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2020-08-18 11:51:07,152 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2020-08-18 11:51:07,152 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2020-08-18 11:51:07,152 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2020-08-18 11:51:07,152 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2020-08-18 11:51:07,152 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_disconnect [2020-08-18 11:51:07,153 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_start [2020-08-18 11:51:07,153 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_probe [2020-08-18 11:51:07,153 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2020-08-18 11:51:07,153 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_irq [2020-08-18 11:51:07,153 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2020-08-18 11:51:07,153 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-18 11:51:07,153 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2020-08-18 11:51:07,154 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-18 11:51:07,154 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2020-08-18 11:51:07,154 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2020-08-18 11:51:07,154 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2020-08-18 11:51:07,154 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2020-08-18 11:51:07,154 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 11:51:07,154 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-18 11:51:07,155 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 11:51:07,155 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-08-18 11:51:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:51:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 11:51:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2020-08-18 11:51:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2020-08-18 11:51:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2020-08-18 11:51:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2020-08-18 11:51:07,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:51:07,156 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-18 11:51:07,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-18 11:51:07,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-18 11:51:07,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-18 11:51:07,156 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2020-08-18 11:51:07,156 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2020-08-18 11:51:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-08-18 11:51:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-18 11:51:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2020-08-18 11:51:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:51:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2020-08-18 11:51:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_disable [2020-08-18 11:51:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2020-08-18 11:51:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2020-08-18 11:51:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2020-08-18 11:51:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2020-08-18 11:51:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2020-08-18 11:51:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2020-08-18 11:51:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2020-08-18 11:51:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2020-08-18 11:51:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2020-08-18 11:51:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2020-08-18 11:51:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure __readl [2020-08-18 11:51:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure __writel [2020-08-18 11:51:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2020-08-18 11:51:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 11:51:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_name [2020-08-18 11:51:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2020-08-18 11:51:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-08-18 11:51:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-18 11:51:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:51:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_platdata [2020-08-18 11:51:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2020-08-18 11:51:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure is_device_dma_capable [2020-08-18 11:51:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2020-08-18 11:51:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2020-08-18 11:51:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_alloc_coherent [2020-08-18 11:51:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_free_coherent [2020-08-18 11:51:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2020-08-18 11:51:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2020-08-18 11:51:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2020-08-18 11:51:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2020-08-18 11:51:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2020-08-18 11:51:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_coherent_mask [2020-08-18 11:51:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_coherent_gfp_flags [2020-08-18 11:51:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2020-08-18 11:51:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~~gfp_t~0~X~$Pointer$~TO~$Pointer$ [2020-08-18 11:51:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2020-08-18 11:51:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:51:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~~dma_addr_t~0~X~$Pointer$~TO~VOID [2020-08-18 11:51:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-18 11:51:07,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-18 11:51:07,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-18 11:51:07,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-18 11:51:07,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-18 11:51:07,163 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-18 11:51:07,163 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2020-08-18 11:51:07,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:51:07,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb_12 [2020-08-18 11:51:07,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-18 11:51:07,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-18 11:51:07,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-18 11:51:07,164 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:51:07,164 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 11:51:07,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:51:07,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 11:51:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 11:51:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 11:51:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 11:51:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:51:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 11:51:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 11:51:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 11:51:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 11:51:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 11:51:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 11:51:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 11:51:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_platform_driver_1 [2020-08-18 11:51:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_net_device_ops_2 [2020-08-18 11:51:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure devm_request_threaded_irq [2020-08-18 11:51:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure devm_request_irq [2020-08-18 11:51:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2020-08-18 11:51:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-18 11:51:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2020-08-18 11:51:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev_16 [2020-08-18 11:51:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev_18 [2020-08-18 11:51:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2020-08-18 11:51:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2020-08-18 11:51:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2020-08-18 11:51:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2020-08-18 11:51:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2020-08-18 11:51:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2020-08-18 11:51:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2020-08-18 11:51:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2020-08-18 11:51:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_irq [2020-08-18 11:51:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2020-08-18 11:51:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2020-08-18 11:51:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2020-08-18 11:51:07,169 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2020-08-18 11:51:07,169 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2020-08-18 11:51:07,169 INFO L130 BoogieDeclarations]: Found specification of procedure ether_setup [2020-08-18 11:51:07,169 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2020-08-18 11:51:07,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_14 [2020-08-18 11:51:07,169 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2020-08-18 11:51:07,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev_15 [2020-08-18 11:51:07,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev_17 [2020-08-18 11:51:07,170 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2020-08-18 11:51:07,170 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2020-08-18 11:51:07,170 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2020-08-18 11:51:07,170 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2020-08-18 11:51:07,170 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2020-08-18 11:51:07,170 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2020-08-18 11:51:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_etherdev_mqs [2020-08-18 11:51:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2020-08-18 11:51:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_irq [2020-08-18 11:51:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2020-08-18 11:51:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_probe [2020-08-18 11:51:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2020-08-18 11:51:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure platform_set_drvdata [2020-08-18 11:51:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure devm_clk_get [2020-08-18 11:51:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure clk_enable [2020-08-18 11:51:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure clk_disable [2020-08-18 11:51:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2020-08-18 11:51:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2020-08-18 11:51:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure phy_disconnect [2020-08-18 11:51:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure phy_start [2020-08-18 11:51:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure devm_ioremap [2020-08-18 11:51:07,173 INFO L130 BoogieDeclarations]: Found specification of procedure of_get_phy_mode [2020-08-18 11:51:07,173 INFO L130 BoogieDeclarations]: Found specification of procedure of_get_mac_address [2020-08-18 11:51:07,173 INFO L130 BoogieDeclarations]: Found specification of procedure macb_mii_init [2020-08-18 11:51:07,173 INFO L130 BoogieDeclarations]: Found specification of procedure macb_ioctl [2020-08-18 11:51:07,173 INFO L130 BoogieDeclarations]: Found specification of procedure macb_get_stats [2020-08-18 11:51:07,173 INFO L130 BoogieDeclarations]: Found specification of procedure macb_set_rx_mode [2020-08-18 11:51:07,173 INFO L130 BoogieDeclarations]: Found specification of procedure macb_set_hwaddr [2020-08-18 11:51:07,173 INFO L130 BoogieDeclarations]: Found specification of procedure macb_get_hwaddr [2020-08-18 11:51:07,174 INFO L130 BoogieDeclarations]: Found specification of procedure at91ether_start [2020-08-18 11:51:07,174 INFO L130 BoogieDeclarations]: Found specification of procedure at91ether_open [2020-08-18 11:51:07,174 INFO L130 BoogieDeclarations]: Found specification of procedure at91ether_close [2020-08-18 11:51:07,174 INFO L130 BoogieDeclarations]: Found specification of procedure at91ether_start_xmit [2020-08-18 11:51:07,174 INFO L130 BoogieDeclarations]: Found specification of procedure at91ether_rx [2020-08-18 11:51:07,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-08-18 11:51:07,174 INFO L130 BoogieDeclarations]: Found specification of procedure at91ether_interrupt [2020-08-18 11:51:07,174 INFO L130 BoogieDeclarations]: Found specification of procedure at91ether_poll_controller [2020-08-18 11:51:07,175 INFO L130 BoogieDeclarations]: Found specification of procedure at91ether_probe [2020-08-18 11:51:07,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:51:07,175 INFO L130 BoogieDeclarations]: Found specification of procedure at91ether_remove [2020-08-18 11:51:07,175 INFO L130 BoogieDeclarations]: Found specification of procedure at91ether_suspend [2020-08-18 11:51:07,175 INFO L130 BoogieDeclarations]: Found specification of procedure at91ether_resume [2020-08-18 11:51:07,175 INFO L130 BoogieDeclarations]: Found specification of procedure at91ether_driver_init [2020-08-18 11:51:07,175 INFO L130 BoogieDeclarations]: Found specification of procedure at91ether_driver_exit [2020-08-18 11:51:07,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_1 [2020-08-18 11:51:07,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_init_2 [2020-08-18 11:51:07,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_uninit_2 [2020-08-18 11:51:07,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 11:51:07,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 11:51:07,176 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:51:07,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-18 11:51:07,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-18 11:51:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-18 11:51:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-18 11:51:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-18 11:51:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-18 11:51:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-18 11:51:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-18 11:51:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-18 11:51:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-18 11:51:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2020-08-18 11:51:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:51:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:51:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 11:51:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:51:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:51:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-08-18 11:51:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-08-18 11:51:07,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-08-18 11:51:07,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-08-18 11:51:07,959 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 11:51:09,378 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:51:09,378 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 11:51:09,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:51:09 BoogieIcfgContainer [2020-08-18 11:51:09,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:51:09,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:51:09,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:51:09,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:51:09,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:51:04" (1/3) ... [2020-08-18 11:51:09,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2057416e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:51:09, skipping insertion in model container [2020-08-18 11:51:09,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:06" (2/3) ... [2020-08-18 11:51:09,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2057416e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:51:09, skipping insertion in model container [2020-08-18 11:51:09,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:51:09" (3/3) ... [2020-08-18 11:51:09,401 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--cadence--at91_ether.ko-entry_point.cil.out.i [2020-08-18 11:51:09,413 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:51:09,425 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:51:09,441 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:51:09,483 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:51:09,483 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:51:09,484 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:51:09,484 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:51:09,484 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:51:09,484 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:51:09,484 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:51:09,484 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:51:09,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states. [2020-08-18 11:51:09,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 11:51:09,539 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:51:09,540 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:51:09,541 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:51:09,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:51:09,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1976669306, now seen corresponding path program 1 times [2020-08-18 11:51:09,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:51:09,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537001571] [2020-08-18 11:51:09,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:51:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:10,220 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-08-18 11:51:10,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:10,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:51:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:10,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:51:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:10,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:51:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:10,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-18 11:51:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:10,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:10,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 11:51:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:10,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 11:51:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:10,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:10,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 11:51:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:10,569 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 11:51:10,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537001571] [2020-08-18 11:51:10,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:51:10,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:51:10,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265104977] [2020-08-18 11:51:10,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:51:10,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:51:10,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:51:10,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:51:10,597 INFO L87 Difference]: Start difference. First operand 1042 states. Second operand 8 states. [2020-08-18 11:51:10,815 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-08-18 11:51:11,474 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-08-18 11:51:11,739 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-08-18 11:51:18,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:51:18,852 INFO L93 Difference]: Finished difference Result 1795 states and 2309 transitions. [2020-08-18 11:51:18,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 11:51:18,855 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-08-18 11:51:18,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:51:18,881 INFO L225 Difference]: With dead ends: 1795 [2020-08-18 11:51:18,881 INFO L226 Difference]: Without dead ends: 957 [2020-08-18 11:51:18,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-08-18 11:51:18,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2020-08-18 11:51:19,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 808. [2020-08-18 11:51:19,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 808 states. [2020-08-18 11:51:19,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 992 transitions. [2020-08-18 11:51:19,086 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 992 transitions. Word has length 61 [2020-08-18 11:51:19,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:51:19,087 INFO L479 AbstractCegarLoop]: Abstraction has 808 states and 992 transitions. [2020-08-18 11:51:19,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:51:19,087 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 992 transitions. [2020-08-18 11:51:19,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-18 11:51:19,093 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:51:19,093 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:51:19,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:51:19,094 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:51:19,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:51:19,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1517192589, now seen corresponding path program 1 times [2020-08-18 11:51:19,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:51:19,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695109449] [2020-08-18 11:51:19,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:51:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:19,355 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-08-18 11:51:19,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:19,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:51:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:19,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:51:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:19,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:51:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:19,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-18 11:51:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:19,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:19,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 11:51:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:19,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:51:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:19,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:19,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 11:51:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:19,541 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 11:51:19,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695109449] [2020-08-18 11:51:19,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:51:19,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 11:51:19,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835012570] [2020-08-18 11:51:19,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:51:19,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:51:19,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:51:19,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:51:19,545 INFO L87 Difference]: Start difference. First operand 808 states and 992 transitions. Second operand 9 states. [2020-08-18 11:51:19,709 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-08-18 11:51:20,376 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-08-18 11:51:26,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:51:26,532 INFO L93 Difference]: Finished difference Result 1743 states and 2185 transitions. [2020-08-18 11:51:26,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 11:51:26,535 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-18 11:51:26,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:51:26,543 INFO L225 Difference]: With dead ends: 1743 [2020-08-18 11:51:26,543 INFO L226 Difference]: Without dead ends: 958 [2020-08-18 11:51:26,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-08-18 11:51:26,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2020-08-18 11:51:26,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 809. [2020-08-18 11:51:26,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 809 states. [2020-08-18 11:51:26,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 993 transitions. [2020-08-18 11:51:26,670 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 993 transitions. Word has length 62 [2020-08-18 11:51:26,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:51:26,670 INFO L479 AbstractCegarLoop]: Abstraction has 809 states and 993 transitions. [2020-08-18 11:51:26,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:51:26,671 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 993 transitions. [2020-08-18 11:51:26,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-18 11:51:26,678 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:51:26,678 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-08-18 11:51:26,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:51:26,679 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:51:26,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:51:26,679 INFO L82 PathProgramCache]: Analyzing trace with hash -158316250, now seen corresponding path program 2 times [2020-08-18 11:51:26,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:51:26,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277791566] [2020-08-18 11:51:26,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:51:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:26,994 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-08-18 11:51:26,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:27,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:51:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:27,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:51:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:27,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:51:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:27,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-18 11:51:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:27,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:27,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 11:51:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:27,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 11:51:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:27,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:27,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 11:51:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:27,172 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 11:51:27,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277791566] [2020-08-18 11:51:27,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:51:27,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 11:51:27,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576736311] [2020-08-18 11:51:27,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 11:51:27,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:51:27,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 11:51:27,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 11:51:27,175 INFO L87 Difference]: Start difference. First operand 809 states and 993 transitions. Second operand 10 states. [2020-08-18 11:51:27,336 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-08-18 11:51:27,927 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-08-18 11:51:35,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:51:35,133 INFO L93 Difference]: Finished difference Result 1744 states and 2186 transitions. [2020-08-18 11:51:35,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 11:51:35,134 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-08-18 11:51:35,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:51:35,142 INFO L225 Difference]: With dead ends: 1744 [2020-08-18 11:51:35,142 INFO L226 Difference]: Without dead ends: 959 [2020-08-18 11:51:35,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-08-18 11:51:35,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-08-18 11:51:35,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 810. [2020-08-18 11:51:35,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2020-08-18 11:51:35,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 994 transitions. [2020-08-18 11:51:35,275 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 994 transitions. Word has length 63 [2020-08-18 11:51:35,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:51:35,276 INFO L479 AbstractCegarLoop]: Abstraction has 810 states and 994 transitions. [2020-08-18 11:51:35,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 11:51:35,276 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 994 transitions. [2020-08-18 11:51:35,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 11:51:35,278 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:51:35,278 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:51:35,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:51:35,278 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:51:35,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:51:35,279 INFO L82 PathProgramCache]: Analyzing trace with hash -982822701, now seen corresponding path program 3 times [2020-08-18 11:51:35,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:51:35,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175426585] [2020-08-18 11:51:35,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:51:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:35,503 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-08-18 11:51:35,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:35,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:51:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:35,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:51:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:35,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:51:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:35,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-18 11:51:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:35,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:35,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 11:51:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:35,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 11:51:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:35,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:35,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 11:51:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:35,718 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 11:51:35,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175426585] [2020-08-18 11:51:35,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:51:35,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 11:51:35,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515317736] [2020-08-18 11:51:35,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 11:51:35,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:51:35,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 11:51:35,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:51:35,720 INFO L87 Difference]: Start difference. First operand 810 states and 994 transitions. Second operand 11 states. [2020-08-18 11:51:35,946 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-08-18 11:51:36,704 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-08-18 11:51:43,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:51:43,924 INFO L93 Difference]: Finished difference Result 1745 states and 2187 transitions. [2020-08-18 11:51:43,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 11:51:43,925 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2020-08-18 11:51:43,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:51:43,932 INFO L225 Difference]: With dead ends: 1745 [2020-08-18 11:51:43,933 INFO L226 Difference]: Without dead ends: 960 [2020-08-18 11:51:43,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-08-18 11:51:43,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2020-08-18 11:51:44,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 811. [2020-08-18 11:51:44,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2020-08-18 11:51:44,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 995 transitions. [2020-08-18 11:51:44,018 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 995 transitions. Word has length 64 [2020-08-18 11:51:44,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:51:44,019 INFO L479 AbstractCegarLoop]: Abstraction has 811 states and 995 transitions. [2020-08-18 11:51:44,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 11:51:44,019 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 995 transitions. [2020-08-18 11:51:44,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 11:51:44,021 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:51:44,021 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:51:44,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:51:44,021 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:51:44,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:51:44,022 INFO L82 PathProgramCache]: Analyzing trace with hash -772718906, now seen corresponding path program 4 times [2020-08-18 11:51:44,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:51:44,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070173786] [2020-08-18 11:51:44,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:51:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:44,252 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-08-18 11:51:44,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:44,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:51:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:44,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:51:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:44,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:51:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:44,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-18 11:51:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:44,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:44,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 11:51:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:44,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 11:51:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:44,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:44,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 11:51:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:44,398 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-18 11:51:44,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070173786] [2020-08-18 11:51:44,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:51:44,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 11:51:44,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300449984] [2020-08-18 11:51:44,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 11:51:44,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:51:44,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 11:51:44,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-18 11:51:44,404 INFO L87 Difference]: Start difference. First operand 811 states and 995 transitions. Second operand 7 states. [2020-08-18 11:51:44,639 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-08-18 11:51:45,471 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-08-18 11:51:50,169 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-08-18 11:51:57,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:51:57,943 INFO L93 Difference]: Finished difference Result 2626 states and 3310 transitions. [2020-08-18 11:51:57,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 11:51:57,943 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-08-18 11:51:57,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:51:57,955 INFO L225 Difference]: With dead ends: 2626 [2020-08-18 11:51:57,955 INFO L226 Difference]: Without dead ends: 1844 [2020-08-18 11:51:57,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-08-18 11:51:57,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2020-08-18 11:51:58,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1556. [2020-08-18 11:51:58,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1556 states. [2020-08-18 11:51:58,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 1915 transitions. [2020-08-18 11:51:58,155 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 1915 transitions. Word has length 65 [2020-08-18 11:51:58,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:51:58,156 INFO L479 AbstractCegarLoop]: Abstraction has 1556 states and 1915 transitions. [2020-08-18 11:51:58,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 11:51:58,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 1915 transitions. [2020-08-18 11:51:58,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-18 11:51:58,161 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:51:58,161 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:51:58,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 11:51:58,161 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:51:58,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:51:58,162 INFO L82 PathProgramCache]: Analyzing trace with hash 350102478, now seen corresponding path program 1 times [2020-08-18 11:51:58,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:51:58,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873294602] [2020-08-18 11:51:58,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:51:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:58,489 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-08-18 11:51:58,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:58,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:51:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:58,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:51:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:58,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:51:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:58,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-18 11:51:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:58,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:58,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 11:51:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:58,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 11:51:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:58,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:51:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:58,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 11:51:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:58,704 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-18 11:51:58,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873294602] [2020-08-18 11:51:58,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:51:58,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 11:51:58,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413063875] [2020-08-18 11:51:58,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 11:51:58,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:51:58,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 11:51:58,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-18 11:51:58,707 INFO L87 Difference]: Start difference. First operand 1556 states and 1915 transitions. Second operand 10 states. [2020-08-18 11:51:58,862 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-08-18 11:51:59,138 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 159