/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--arcnet--com90xx.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:47:21,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:47:21,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:47:21,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:47:21,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:47:21,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:47:21,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:47:21,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:47:21,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:47:21,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:47:21,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:47:21,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:47:21,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:47:21,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:47:21,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:47:21,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:47:21,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:47:21,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:47:21,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:47:21,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:47:21,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:47:21,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:47:21,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:47:21,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:47:21,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:47:21,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:47:21,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:47:21,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:47:21,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:47:21,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:47:21,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:47:21,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:47:21,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:47:21,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:47:21,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:47:21,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:47:21,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:47:21,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:47:21,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:47:21,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:47:21,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:47:21,347 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 16:47:21,368 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:47:21,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:47:21,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:47:21,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:47:21,370 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:47:21,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:47:21,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:47:21,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:47:21,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:47:21,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:47:21,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:47:21,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:47:21,372 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:47:21,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:47:21,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:47:21,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:47:21,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:47:21,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:47:21,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:47:21,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:47:21,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:47:21,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:47:21,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:47:21,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:47:21,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:47:21,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:47:21,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 16:47:21,375 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 16:47:21,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:47:21,670 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:47:21,673 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:47:21,674 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:47:21,675 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:47:21,675 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-18 16:47:21,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cdcd0084/0270be9378e540b19ad4b3bd75afe98b/FLAGc419fcc85 [2020-08-18 16:47:22,545 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:47:22,546 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-18 16:47:22,589 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cdcd0084/0270be9378e540b19ad4b3bd75afe98b/FLAGc419fcc85 [2020-08-18 16:47:23,072 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cdcd0084/0270be9378e540b19ad4b3bd75afe98b [2020-08-18 16:47:23,081 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:47:23,083 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:47:23,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:47:23,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:47:23,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:47:23,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:47:23" (1/1) ... [2020-08-18 16:47:23,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ca0bbd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:47:23, skipping insertion in model container [2020-08-18 16:47:23,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:47:23" (1/1) ... [2020-08-18 16:47:23,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:47:23,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:47:24,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:47:24,448 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:47:24,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:47:24,845 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:47:24,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:47:24 WrapperNode [2020-08-18 16:47:24,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:47:24,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:47:24,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:47:24,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:47:24,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:47:24" (1/1) ... [2020-08-18 16:47:24,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:47:24" (1/1) ... [2020-08-18 16:47:24,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:47:24" (1/1) ... [2020-08-18 16:47:24,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:47:24" (1/1) ... [2020-08-18 16:47:25,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:47:24" (1/1) ... [2020-08-18 16:47:25,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:47:24" (1/1) ... [2020-08-18 16:47:25,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:47:24" (1/1) ... [2020-08-18 16:47:25,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:47:25,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:47:25,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:47:25,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:47:25,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:47:24" (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 16:47:25,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:47:25,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:47:25,176 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2020-08-18 16:47:25,177 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2020-08-18 16:47:25,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2020-08-18 16:47:25,177 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2020-08-18 16:47:25,179 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2020-08-18 16:47:25,179 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-18 16:47:25,182 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-18 16:47:25,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-18 16:47:25,182 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-18 16:47:25,182 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-18 16:47:25,183 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 16:47:25,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 16:47:25,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 16:47:25,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 16:47:25,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 16:47:25,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 16:47:25,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 16:47:25,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 16:47:25,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 16:47:25,191 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2020-08-18 16:47:25,191 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-18 16:47:25,191 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_probe [2020-08-18 16:47:25,191 INFO L138 BoogieDeclarations]: Found implementation of procedure check_mirror [2020-08-18 16:47:25,191 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_found [2020-08-18 16:47:25,191 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_command [2020-08-18 16:47:25,192 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_status [2020-08-18 16:47:25,192 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_setmask [2020-08-18 16:47:25,192 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_reset [2020-08-18 16:47:25,192 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_to_card [2020-08-18 16:47:25,192 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_from_card [2020-08-18 16:47:25,193 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_init [2020-08-18 16:47:25,193 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_exit [2020-08-18 16:47:25,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2020-08-18 16:47:25,194 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2020-08-18 16:47:25,194 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2020-08-18 16:47:25,194 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_interrupt_1 [2020-08-18 16:47:25,194 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2020-08-18 16:47:25,194 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:47:25,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-18 16:47:25,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-18 16:47:25,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-18 16:47:25,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-18 16:47:25,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-18 16:47:25,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_12 [2020-08-18 16:47:25,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_13 [2020-08-18 16:47:25,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_14 [2020-08-18 16:47:25,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-18 16:47:25,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-18 16:47:25,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-18 16:47:25,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-18 16:47:25,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-18 16:47:25,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-18 16:47:25,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-18 16:47:25,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-18 16:47:25,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-18 16:47:25,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-18 16:47:25,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 16:47:25,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-18 16:47:25,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-18 16:47:25,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-18 16:47:25,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-18 16:47:25,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-18 16:47:25,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 16:47:25,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-08-18 16:47:25,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-08-18 16:47:25,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-08-18 16:47:25,201 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_arcdev [2020-08-18 16:47:25,201 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_interrupt [2020-08-18 16:47:25,201 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2020-08-18 16:47:25,201 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2020-08-18 16:47:25,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2020-08-18 16:47:25,202 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2020-08-18 16:47:25,203 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-18 16:47:25,203 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_off [2020-08-18 16:47:25,203 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_on [2020-08-18 16:47:25,204 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2020-08-18 16:47:25,205 INFO L138 BoogieDeclarations]: Found implementation of procedure request_threaded_irq [2020-08-18 16:47:25,205 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2020-08-18 16:47:25,205 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 16:47:25,206 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 16:47:25,207 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-08-18 16:47:25,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:47:25,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 16:47:25,208 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-18 16:47:25,208 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-08-18 16:47:25,209 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-08-18 16:47:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2020-08-18 16:47:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2020-08-18 16:47:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2020-08-18 16:47:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2020-08-18 16:47:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-08-18 16:47:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2020-08-18 16:47:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2020-08-18 16:47:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-08-18 16:47:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2020-08-18 16:47:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-18 16:47:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-18 16:47:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 16:47:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 16:47:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-18 16:47:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-18 16:47:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 16:47:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-18 16:47:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-18 16:47:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-18 16:47:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-18 16:47:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-18 16:47:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-18 16:47:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-18 16:47:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:47:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 16:47:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:47:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 16:47:25,215 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 16:47:25,215 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 16:47:25,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:47:25,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 16:47:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 16:47:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 16:47:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 16:47:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 16:47:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 16:47:25,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2020-08-18 16:47:25,220 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2020-08-18 16:47:25,220 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2020-08-18 16:47:25,220 INFO L130 BoogieDeclarations]: Found specification of procedure choose_interrupt_1 [2020-08-18 16:47:25,220 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2020-08-18 16:47:25,220 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2020-08-18 16:47:25,221 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2020-08-18 16:47:25,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_12 [2020-08-18 16:47:25,222 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2020-08-18 16:47:25,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_13 [2020-08-18 16:47:25,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_14 [2020-08-18 16:47:25,224 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_on [2020-08-18 16:47:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_off [2020-08-18 16:47:25,227 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-08-18 16:47:25,227 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-18 16:47:25,227 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2020-08-18 16:47:25,228 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2020-08-18 16:47:25,228 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2020-08-18 16:47:25,228 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_interrupt [2020-08-18 16:47:25,228 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_arcdev [2020-08-18 16:47:25,229 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_found [2020-08-18 16:47:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_command [2020-08-18 16:47:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_status [2020-08-18 16:47:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_setmask [2020-08-18 16:47:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_reset [2020-08-18 16:47:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_to_card [2020-08-18 16:47:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_from_card [2020-08-18 16:47:25,236 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_probe [2020-08-18 16:47:25,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:47:25,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:47:25,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:47:25,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:47:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:47:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:47:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure check_mirror [2020-08-18 16:47:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_init [2020-08-18 16:47:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_exit [2020-08-18 16:47:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 16:47:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 16:47:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:47:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-18 16:47:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-18 16:47:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-18 16:47:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-18 16:47:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-18 16:47:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-18 16:47:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-18 16:47:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-18 16:47:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-18 16:47:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-18 16:47:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-18 16:47:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-18 16:47:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-18 16:47:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-18 16:47:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:47:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:47:25,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:47:25,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:47:25,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-08-18 16:47:25,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-08-18 16:47:25,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-08-18 16:47:25,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-08-18 16:47:25,979 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 16:47:29,690 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:47:29,691 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:47:29,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:47:29 BoogieIcfgContainer [2020-08-18 16:47:29,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:47:29,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:47:29,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:47:29,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:47:29,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:47:23" (1/3) ... [2020-08-18 16:47:29,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf4b33c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:47:29, skipping insertion in model container [2020-08-18 16:47:29,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:47:24" (2/3) ... [2020-08-18 16:47:29,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf4b33c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:47:29, skipping insertion in model container [2020-08-18 16:47:29,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:47:29" (3/3) ... [2020-08-18 16:47:29,706 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-18 16:47:29,717 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:47:29,725 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:47:29,739 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:47:29,764 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:47:29,765 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:47:29,765 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:47:29,765 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:47:29,765 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:47:29,765 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:47:29,765 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:47:29,766 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:47:29,795 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states. [2020-08-18 16:47:29,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-18 16:47:29,805 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:47:29,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:47:29,806 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:47:29,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:47:29,812 INFO L82 PathProgramCache]: Analyzing trace with hash -337560205, now seen corresponding path program 1 times [2020-08-18 16:47:29,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:47:29,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042844615] [2020-08-18 16:47:29,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:47:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:31,818 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 526 [2020-08-18 16:47:31,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:47:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:31,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:47:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:31,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:47:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:31,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 16:47:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:31,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:47:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:32,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:47:32,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042844615] [2020-08-18 16:47:32,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:47:32,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:47:32,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718090284] [2020-08-18 16:47:32,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:47:32,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:47:32,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:47:32,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:47:32,049 INFO L87 Difference]: Start difference. First operand 624 states. Second operand 6 states. [2020-08-18 16:47:40,562 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 528 [2020-08-18 16:47:51,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:47:51,251 INFO L93 Difference]: Finished difference Result 1420 states and 2070 transitions. [2020-08-18 16:47:51,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 16:47:51,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-08-18 16:47:51,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:47:51,280 INFO L225 Difference]: With dead ends: 1420 [2020-08-18 16:47:51,281 INFO L226 Difference]: Without dead ends: 864 [2020-08-18 16:47:51,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:47:51,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2020-08-18 16:47:51,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 600. [2020-08-18 16:47:51,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-08-18 16:47:51,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 822 transitions. [2020-08-18 16:47:51,570 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 822 transitions. Word has length 36 [2020-08-18 16:47:51,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:47:51,570 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 822 transitions. [2020-08-18 16:47:51,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:47:51,571 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 822 transitions. [2020-08-18 16:47:51,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-18 16:47:51,574 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:47:51,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:47:51,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:47:51,575 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:47:51,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:47:51,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1418341137, now seen corresponding path program 1 times [2020-08-18 16:47:51,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:47:51,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922288087] [2020-08-18 16:47:51,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:47:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:53,035 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 526 [2020-08-18 16:47:53,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:47:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:53,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:47:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:53,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:47:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:53,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 16:47:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:53,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:47:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:53,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:47:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:47:53,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922288087] [2020-08-18 16:47:53,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:47:53,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:47:53,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619450497] [2020-08-18 16:47:53,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:47:53,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:47:53,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:47:53,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:47:53,378 INFO L87 Difference]: Start difference. First operand 600 states and 822 transitions. Second operand 8 states. [2020-08-18 16:47:54,607 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 529 [2020-08-18 16:47:57,998 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 531 [2020-08-18 16:48:09,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:48:09,120 INFO L93 Difference]: Finished difference Result 1312 states and 1821 transitions. [2020-08-18 16:48:09,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 16:48:09,121 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-08-18 16:48:09,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:48:09,128 INFO L225 Difference]: With dead ends: 1312 [2020-08-18 16:48:09,128 INFO L226 Difference]: Without dead ends: 726 [2020-08-18 16:48:09,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-08-18 16:48:09,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2020-08-18 16:48:09,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 600. [2020-08-18 16:48:09,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-08-18 16:48:09,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 820 transitions. [2020-08-18 16:48:09,285 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 820 transitions. Word has length 48 [2020-08-18 16:48:09,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:48:09,285 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 820 transitions. [2020-08-18 16:48:09,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:48:09,286 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 820 transitions. [2020-08-18 16:48:09,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-18 16:48:09,288 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:48:09,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:48:09,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:48:09,289 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:48:09,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:48:09,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1356301523, now seen corresponding path program 1 times [2020-08-18 16:48:09,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:48:09,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055559889] [2020-08-18 16:48:09,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:48:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:10,726 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 526 [2020-08-18 16:48:10,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:48:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:10,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:48:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:10,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:48:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:10,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 16:48:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:10,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:48:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:11,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:48:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:11,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:48:11,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055559889] [2020-08-18 16:48:11,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:48:11,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 16:48:11,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122941389] [2020-08-18 16:48:11,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 16:48:11,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:48:11,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 16:48:11,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:48:11,095 INFO L87 Difference]: Start difference. First operand 600 states and 820 transitions. Second operand 7 states. [2020-08-18 16:48:12,498 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 529 [2020-08-18 16:48:25,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:48:25,758 INFO L93 Difference]: Finished difference Result 1314 states and 1820 transitions. [2020-08-18 16:48:25,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 16:48:25,759 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-08-18 16:48:25,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:48:25,765 INFO L225 Difference]: With dead ends: 1314 [2020-08-18 16:48:25,765 INFO L226 Difference]: Without dead ends: 728 [2020-08-18 16:48:25,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:48:25,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-08-18 16:48:25,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 602. [2020-08-18 16:48:25,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2020-08-18 16:48:25,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 822 transitions. [2020-08-18 16:48:25,925 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 822 transitions. Word has length 48 [2020-08-18 16:48:25,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:48:25,925 INFO L479 AbstractCegarLoop]: Abstraction has 602 states and 822 transitions. [2020-08-18 16:48:25,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 16:48:25,926 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 822 transitions. [2020-08-18 16:48:25,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-18 16:48:25,928 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:48:25,928 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 16:48:25,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:48:25,928 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:48:25,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:48:25,929 INFO L82 PathProgramCache]: Analyzing trace with hash -2078713816, now seen corresponding path program 1 times [2020-08-18 16:48:25,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:48:25,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448962333] [2020-08-18 16:48:25,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:48:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:27,288 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 526 [2020-08-18 16:48:27,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:48:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:27,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:48:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:27,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:48:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:27,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 16:48:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:27,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:48:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:27,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 16:48:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:48:27,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448962333] [2020-08-18 16:48:27,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:48:27,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-18 16:48:27,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470762197] [2020-08-18 16:48:27,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:48:27,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:48:27,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:48:27,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:48:27,678 INFO L87 Difference]: Start difference. First operand 602 states and 822 transitions. Second operand 8 states.