/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 --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:40:30,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:40:30,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:40:30,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:40:30,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:40:30,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:40:30,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:40:30,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:40:30,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:40:30,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:40:30,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:40:30,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:40:30,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:40:30,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:40:30,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:40:30,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:40:30,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:40:30,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:40:30,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:40:30,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:40:30,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:40:30,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:40:30,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:40:30,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:40:30,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:40:30,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:40:30,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:40:30,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:40:30,237 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:40:30,238 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:40:30,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:40:30,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:40:30,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:40:30,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:40:30,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:40:30,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:40:30,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:40:30,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:40:30,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:40:30,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:40:30,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:40:30,244 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 [2020-08-21 18:40:30,268 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:40:30,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:40:30,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:40:30,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:40:30,270 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:40:30,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:40:30,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:40:30,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:40:30,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:40:30,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:40:30,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:40:30,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:40:30,271 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:40:30,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:40:30,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:40:30,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:40:30,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:40:30,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:40:30,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:40:30,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:40:30,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:40:30,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:40:30,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:40:30,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:40:30,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:40:30,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:40:30,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-21 18:40:30,274 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 18:40:30,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:40:30,584 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:40:30,590 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:40:30,592 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:40:30,592 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:40:30,593 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-21 18:40:30,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b920d0b0/f53f8c6e560745909ae89f0ad4c7d545/FLAG414853b09 [2020-08-21 18:40:31,405 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:40:31,406 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-21 18:40:31,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b920d0b0/f53f8c6e560745909ae89f0ad4c7d545/FLAG414853b09 [2020-08-21 18:40:31,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b920d0b0/f53f8c6e560745909ae89f0ad4c7d545 [2020-08-21 18:40:31,914 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:40:31,916 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:40:31,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:40:31,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:40:31,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:40:31,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:40:31" (1/1) ... [2020-08-21 18:40:31,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@669daa18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:40:31, skipping insertion in model container [2020-08-21 18:40:31,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:40:31" (1/1) ... [2020-08-21 18:40:31,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:40:32,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:40:33,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:40:33,448 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:40:33,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:40:33,775 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:40:33,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:40:33 WrapperNode [2020-08-21 18:40:33,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:40:33,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:40:33,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:40:33,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:40:33,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:40:33" (1/1) ... [2020-08-21 18:40:33,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:40:33" (1/1) ... [2020-08-21 18:40:33,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:40:33" (1/1) ... [2020-08-21 18:40:33,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:40:33" (1/1) ... [2020-08-21 18:40:33,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:40:33" (1/1) ... [2020-08-21 18:40:33,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:40:33" (1/1) ... [2020-08-21 18:40:33,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:40:33" (1/1) ... [2020-08-21 18:40:33,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:40:33,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:40:33,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:40:33,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:40:33,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:40:33" (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 [2020-08-21 18:40:34,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:40:34,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:40:34,110 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2020-08-21 18:40:34,110 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2020-08-21 18:40:34,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2020-08-21 18:40:34,112 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2020-08-21 18:40:34,113 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2020-08-21 18:40:34,113 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-21 18:40:34,114 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-21 18:40:34,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-21 18:40:34,114 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-21 18:40:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-21 18:40:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 18:40:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-21 18:40:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-21 18:40:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2020-08-21 18:40:34,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2020-08-21 18:40:34,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-21 18:40:34,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-21 18:40:34,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-21 18:40:34,122 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2020-08-21 18:40:34,124 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-21 18:40:34,124 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_probe [2020-08-21 18:40:34,124 INFO L138 BoogieDeclarations]: Found implementation of procedure check_mirror [2020-08-21 18:40:34,125 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_found [2020-08-21 18:40:34,125 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_command [2020-08-21 18:40:34,125 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_status [2020-08-21 18:40:34,126 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_setmask [2020-08-21 18:40:34,126 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_reset [2020-08-21 18:40:34,127 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_to_card [2020-08-21 18:40:34,128 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_from_card [2020-08-21 18:40:34,128 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_init [2020-08-21 18:40:34,128 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_exit [2020-08-21 18:40:34,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2020-08-21 18:40:34,129 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2020-08-21 18:40:34,129 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2020-08-21 18:40:34,130 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_interrupt_1 [2020-08-21 18:40:34,130 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2020-08-21 18:40:34,130 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:40:34,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_5 [2020-08-21 18:40:34,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_6 [2020-08-21 18:40:34,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_7 [2020-08-21 18:40:34,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-21 18:40:34,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-21 18:40:34,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-21 18:40:34,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-21 18:40:34,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-21 18:40:34,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2020-08-21 18:40:34,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2020-08-21 18:40:34,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2020-08-21 18:40:34,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2020-08-21 18:40:34,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2020-08-21 18:40:34,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-21 18:40:34,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-08-21 18:40:34,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-08-21 18:40:34,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-08-21 18:40:34,141 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_arcdev [2020-08-21 18:40:34,141 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_interrupt [2020-08-21 18:40:34,141 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2020-08-21 18:40:34,142 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2020-08-21 18:40:34,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2020-08-21 18:40:34,143 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2020-08-21 18:40:34,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-21 18:40:34,144 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-21 18:40:34,144 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_off [2020-08-21 18:40:34,144 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_on [2020-08-21 18:40:34,145 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2020-08-21 18:40:34,145 INFO L138 BoogieDeclarations]: Found implementation of procedure request_threaded_irq [2020-08-21 18:40:34,145 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2020-08-21 18:40:34,146 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-21 18:40:34,146 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-21 18:40:34,146 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-21 18:40:34,147 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-08-21 18:40:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:40:34,149 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-21 18:40:34,151 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-08-21 18:40:34,151 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-21 18:40:34,152 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-08-21 18:40:34,153 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-08-21 18:40:34,154 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2020-08-21 18:40:34,154 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2020-08-21 18:40:34,155 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2020-08-21 18:40:34,155 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2020-08-21 18:40:34,155 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2020-08-21 18:40:34,155 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2020-08-21 18:40:34,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-08-21 18:40:34,156 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2020-08-21 18:40:34,158 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-21 18:40:34,158 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-21 18:40:34,158 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-21 18:40:34,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-21 18:40:34,159 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-21 18:40:34,159 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-21 18:40:34,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-21 18:40:34,160 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-21 18:40:34,160 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 18:40:34,160 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 18:40:34,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:40:34,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-21 18:40:34,161 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 18:40:34,161 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 18:40:34,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 18:40:34,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-21 18:40:34,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2020-08-21 18:40:34,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2020-08-21 18:40:34,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-21 18:40:34,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-21 18:40:34,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-21 18:40:34,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-21 18:40:34,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2020-08-21 18:40:34,164 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2020-08-21 18:40:34,164 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2020-08-21 18:40:34,164 INFO L130 BoogieDeclarations]: Found specification of procedure choose_interrupt_1 [2020-08-21 18:40:34,164 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2020-08-21 18:40:34,165 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2020-08-21 18:40:34,165 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2020-08-21 18:40:34,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_5 [2020-08-21 18:40:34,167 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2020-08-21 18:40:34,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_6 [2020-08-21 18:40:34,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_7 [2020-08-21 18:40:34,168 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_on [2020-08-21 18:40:34,171 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_off [2020-08-21 18:40:34,171 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-08-21 18:40:34,171 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-21 18:40:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2020-08-21 18:40:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2020-08-21 18:40:34,174 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2020-08-21 18:40:34,174 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_interrupt [2020-08-21 18:40:34,174 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_arcdev [2020-08-21 18:40:34,174 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_found [2020-08-21 18:40:34,175 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_command [2020-08-21 18:40:34,175 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_status [2020-08-21 18:40:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_setmask [2020-08-21 18:40:34,182 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_reset [2020-08-21 18:40:34,182 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_to_card [2020-08-21 18:40:34,182 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_from_card [2020-08-21 18:40:34,183 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_probe [2020-08-21 18:40:34,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:40:34,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:40:34,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:40:34,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:40:34,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 18:40:34,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 18:40:34,186 INFO L130 BoogieDeclarations]: Found specification of procedure check_mirror [2020-08-21 18:40:34,187 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_init [2020-08-21 18:40:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_exit [2020-08-21 18:40:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-21 18:40:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-21 18:40:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:40:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-21 18:40:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-21 18:40:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-21 18:40:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-21 18:40:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-21 18:40:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2020-08-21 18:40:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2020-08-21 18:40:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2020-08-21 18:40:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2020-08-21 18:40:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2020-08-21 18:40:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 18:40:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:40:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 18:40:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:40:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-08-21 18:40:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-08-21 18:40:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-08-21 18:40:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-08-21 18:40:35,267 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-21 18:40:35,272 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2020-08-21 18:40:38,449 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:40:38,449 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 18:40:38,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:40:38 BoogieIcfgContainer [2020-08-21 18:40:38,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:40:38,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:40:38,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:40:38,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:40:38,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:40:31" (1/3) ... [2020-08-21 18:40:38,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7161d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:40:38, skipping insertion in model container [2020-08-21 18:40:38,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:40:33" (2/3) ... [2020-08-21 18:40:38,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7161d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:40:38, skipping insertion in model container [2020-08-21 18:40:38,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:40:38" (3/3) ... [2020-08-21 18:40:38,472 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-21 18:40:38,483 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:40:38,495 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:40:38,513 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:40:38,547 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:40:38,548 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:40:38,548 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:40:38,548 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:40:38,549 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:40:38,549 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:40:38,549 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:40:38,549 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:40:38,599 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states. [2020-08-21 18:40:38,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 18:40:38,614 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:40:38,615 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] [2020-08-21 18:40:38,615 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:40:38,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:40:38,622 INFO L82 PathProgramCache]: Analyzing trace with hash 915174829, now seen corresponding path program 1 times [2020-08-21 18:40:38,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:40:38,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292519430] [2020-08-21 18:40:38,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:40:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:41,011 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-21 18:40:41,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:40:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:41,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:40:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:41,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:40:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:41,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:40:41,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292519430] [2020-08-21 18:40:41,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:40:41,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:40:41,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256398537] [2020-08-21 18:40:41,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:40:41,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:40:41,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:40:41,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:40:41,195 INFO L87 Difference]: Start difference. First operand 599 states. Second operand 5 states. [2020-08-21 18:40:43,409 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 516 [2020-08-21 18:40:55,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:40:55,008 INFO L93 Difference]: Finished difference Result 1404 states and 2054 transitions. [2020-08-21 18:40:55,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 18:40:55,010 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-08-21 18:40:55,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:40:55,037 INFO L225 Difference]: With dead ends: 1404 [2020-08-21 18:40:55,037 INFO L226 Difference]: Without dead ends: 854 [2020-08-21 18:40:55,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:40:55,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-08-21 18:40:55,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 590. [2020-08-21 18:40:55,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-08-21 18:40:55,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 812 transitions. [2020-08-21 18:40:55,260 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 812 transitions. Word has length 26 [2020-08-21 18:40:55,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:40:55,260 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 812 transitions. [2020-08-21 18:40:55,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:40:55,261 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 812 transitions. [2020-08-21 18:40:55,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-21 18:40:55,264 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:40:55,264 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] [2020-08-21 18:40:55,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:40:55,265 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:40:55,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:40:55,265 INFO L82 PathProgramCache]: Analyzing trace with hash 568046743, now seen corresponding path program 1 times [2020-08-21 18:40:55,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:40:55,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705368009] [2020-08-21 18:40:55,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:40:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:56,931 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-21 18:40:56,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:40:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:57,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:40:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:57,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:40:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:57,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:40:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:40:57,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705368009] [2020-08-21 18:40:57,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:40:57,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 18:40:57,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061297656] [2020-08-21 18:40:57,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 18:40:57,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:40:57,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 18:40:57,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:40:57,297 INFO L87 Difference]: Start difference. First operand 590 states and 812 transitions. Second operand 7 states. [2020-08-21 18:40:58,882 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification that was a NOOP. DAG size: 517 [2020-08-21 18:41:04,020 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification that was a NOOP. DAG size: 519 [2020-08-21 18:41:14,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:41:14,628 INFO L93 Difference]: Finished difference Result 1298 states and 1808 transitions. [2020-08-21 18:41:14,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 18:41:14,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-08-21 18:41:14,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:41:14,641 INFO L225 Difference]: With dead ends: 1298 [2020-08-21 18:41:14,641 INFO L226 Difference]: Without dead ends: 718 [2020-08-21 18:41:14,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:41:14,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-08-21 18:41:14,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 592. [2020-08-21 18:41:14,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-08-21 18:41:14,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 812 transitions. [2020-08-21 18:41:14,871 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 812 transitions. Word has length 38 [2020-08-21 18:41:14,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:41:14,871 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 812 transitions. [2020-08-21 18:41:14,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 18:41:14,871 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 812 transitions. [2020-08-21 18:41:14,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-21 18:41:14,880 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:41:14,880 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] [2020-08-21 18:41:14,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:41:14,880 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:41:14,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:41:14,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1713732304, now seen corresponding path program 1 times [2020-08-21 18:41:14,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:41:14,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579693477] [2020-08-21 18:41:14,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:41:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:41:16,585 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-21 18:41:16,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:41:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:41:16,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:41:16,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:41:16,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:41:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:41:16,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:41:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:41:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 18:41:17,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579693477] [2020-08-21 18:41:17,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:41:17,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 18:41:17,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347141637] [2020-08-21 18:41:17,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 18:41:17,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:41:17,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 18:41:17,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:41:17,061 INFO L87 Difference]: Start difference. First operand 592 states and 812 transitions. Second operand 7 states. [2020-08-21 18:41:18,678 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification that was a NOOP. DAG size: 517 [2020-08-21 18:41:24,660 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification that was a NOOP. DAG size: 519 [2020-08-21 18:41:36,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:41:36,673 INFO L93 Difference]: Finished difference Result 1300 states and 1805 transitions. [2020-08-21 18:41:36,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 18:41:36,674 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-08-21 18:41:36,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:41:36,681 INFO L225 Difference]: With dead ends: 1300 [2020-08-21 18:41:36,681 INFO L226 Difference]: Without dead ends: 718 [2020-08-21 18:41:36,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:41:36,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-08-21 18:41:36,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 592. [2020-08-21 18:41:36,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-08-21 18:41:36,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 811 transitions. [2020-08-21 18:41:36,803 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 811 transitions. Word has length 40 [2020-08-21 18:41:36,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:41:36,804 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 811 transitions. [2020-08-21 18:41:36,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 18:41:36,804 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 811 transitions. [2020-08-21 18:41:36,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 18:41:36,806 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:41:36,806 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:41:36,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:41:36,807 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:41:36,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:41:36,807 INFO L82 PathProgramCache]: Analyzing trace with hash -474975370, now seen corresponding path program 1 times [2020-08-21 18:41:36,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:41:36,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3067363] [2020-08-21 18:41:36,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY