./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c25ee40b84da0e037e1d80db414ed17491ea7807f66e1b888adc8df58baa009c --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 09:13:23,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 09:13:23,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 09:13:23,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 09:13:23,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 09:13:23,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 09:13:23,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 09:13:23,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 09:13:23,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 09:13:23,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 09:13:23,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 09:13:23,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 09:13:23,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 09:13:23,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 09:13:23,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 09:13:23,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 09:13:23,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 09:13:23,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 09:13:23,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 09:13:23,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 09:13:23,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 09:13:23,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 09:13:23,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 09:13:23,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 09:13:23,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 09:13:23,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 09:13:23,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 09:13:23,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 09:13:23,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 09:13:23,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 09:13:23,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 09:13:23,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 09:13:23,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 09:13:23,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 09:13:23,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 09:13:23,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 09:13:23,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 09:13:23,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 09:13:23,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 09:13:23,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 09:13:23,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 09:13:23,069 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 09:13:23,082 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 09:13:23,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 09:13:23,083 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 09:13:23,083 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 09:13:23,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 09:13:23,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 09:13:23,084 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 09:13:23,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 09:13:23,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 09:13:23,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 09:13:23,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 09:13:23,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 09:13:23,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 09:13:23,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 09:13:23,085 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 09:13:23,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 09:13:23,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 09:13:23,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 09:13:23,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 09:13:23,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 09:13:23,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 09:13:23,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 09:13:23,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 09:13:23,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 09:13:23,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 09:13:23,087 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 09:13:23,087 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 09:13:23,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 09:13:23,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 09:13:23,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c25ee40b84da0e037e1d80db414ed17491ea7807f66e1b888adc8df58baa009c [2021-11-04 09:13:23,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 09:13:23,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 09:13:23,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 09:13:23,263 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 09:13:23,263 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 09:13:23,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i [2021-11-04 09:13:23,314 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48e868ad9/0729fbb4eb7243a797af2c49e49d7fae/FLAGfb460d143 [2021-11-04 09:13:24,148 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 09:13:24,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i [2021-11-04 09:13:24,224 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48e868ad9/0729fbb4eb7243a797af2c49e49d7fae/FLAGfb460d143 [2021-11-04 09:13:24,344 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48e868ad9/0729fbb4eb7243a797af2c49e49d7fae [2021-11-04 09:13:24,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 09:13:24,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 09:13:24,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 09:13:24,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 09:13:24,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 09:13:24,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 09:13:24" (1/1) ... [2021-11-04 09:13:24,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4608377f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:13:24, skipping insertion in model container [2021-11-04 09:13:24,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 09:13:24" (1/1) ... [2021-11-04 09:13:24,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 09:13:24,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 09:13:33,471 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i[887989,888002] [2021-11-04 09:13:33,473 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i[888134,888147] [2021-11-04 09:13:33,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 09:13:33,622 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 09:13:34,117 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i[887989,888002] [2021-11-04 09:13:34,117 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i[888134,888147] [2021-11-04 09:13:34,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 09:13:34,650 INFO L208 MainTranslator]: Completed translation [2021-11-04 09:13:34,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:13:34 WrapperNode [2021-11-04 09:13:34,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 09:13:34,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 09:13:34,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 09:13:34,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 09:13:34,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:13:34" (1/1) ... [2021-11-04 09:13:34,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:13:34" (1/1) ... [2021-11-04 09:13:36,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 09:13:36,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 09:13:36,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 09:13:36,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 09:13:36,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:13:34" (1/1) ... [2021-11-04 09:13:36,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:13:34" (1/1) ... [2021-11-04 09:13:36,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:13:34" (1/1) ... [2021-11-04 09:13:36,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:13:34" (1/1) ... [2021-11-04 09:13:36,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:13:34" (1/1) ... [2021-11-04 09:13:37,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:13:34" (1/1) ... [2021-11-04 09:13:37,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:13:34" (1/1) ... [2021-11-04 09:13:37,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 09:13:37,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 09:13:37,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 09:13:37,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 09:13:37,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:13:34" (1/1) ... [2021-11-04 09:13:37,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 09:13:37,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 09:13:37,697 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 09:13:37,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 09:13:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_clean_desc3___0 [2021-11-04 09:13:37,727 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_clean_desc3___0 [2021-11-04 09:13:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_probe [2021-11-04 09:13:37,727 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_probe [2021-11-04 09:13:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_poll_controller [2021-11-04 09:13:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_poll_controller [2021-11-04 09:13:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_suspend [2021-11-04 09:13:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_suspend [2021-11-04 09:13:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 09:13:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 09:13:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_tx_skbufs [2021-11-04 09:13:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_tx_skbufs [2021-11-04 09:13:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 09:13:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 09:13:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_suspend [2021-11-04 09:13:37,729 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_suspend [2021-11-04 09:13:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_interrupt [2021-11-04 09:13:37,729 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_interrupt [2021-11-04 09:13:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 09:13:37,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 09:13:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 09:13:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-04 09:13:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_get_ethtool_stats [2021-11-04 09:13:37,730 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_get_ethtool_stats [2021-11-04 09:13:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_init_rx_buffers [2021-11-04 09:13:37,730 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_init_rx_buffers [2021-11-04 09:13:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_hw_setup [2021-11-04 09:13:37,730 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_hw_setup [2021-11-04 09:13:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 09:13:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-04 09:13:37,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-04 09:13:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 09:13:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_release [2021-11-04 09:13:37,731 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_release [2021-11-04 09:13:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_tx_timeout [2021-11-04 09:13:37,731 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_tx_timeout [2021-11-04 09:13:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_hw_init [2021-11-04 09:13:37,731 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_hw_init [2021-11-04 09:13:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 09:13:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_disable_eee_mode [2021-11-04 09:13:37,732 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_disable_eee_mode [2021-11-04 09:13:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_remove [2021-11-04 09:13:37,732 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_remove [2021-11-04 09:13:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_remove [2021-11-04 09:13:37,732 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_remove [2021-11-04 09:13:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dma_interrupt [2021-11-04 09:13:37,733 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dma_interrupt [2021-11-04 09:13:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_resume [2021-11-04 09:13:37,733 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_resume [2021-11-04 09:13:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 09:13:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_open [2021-11-04 09:13:37,733 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_open [2021-11-04 09:13:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 09:13:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 09:13:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure init_dma_desc_rings [2021-11-04 09:13:37,734 INFO L138 BoogieDeclarations]: Found implementation of procedure init_dma_desc_rings [2021-11-04 09:13:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_get_hw_features [2021-11-04 09:13:37,734 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_get_hw_features [2021-11-04 09:13:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_probe [2021-11-04 09:13:37,735 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_probe [2021-11-04 09:13:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dvr_probe [2021-11-04 09:13:37,735 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dvr_probe [2021-11-04 09:13:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_resume [2021-11-04 09:13:37,736 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_resume [2021-11-04 09:13:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure free_dma_desc_resources [2021-11-04 09:13:37,736 INFO L138 BoogieDeclarations]: Found implementation of procedure free_dma_desc_resources [2021-11-04 09:13:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_mdio_reset [2021-11-04 09:13:37,736 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_mdio_reset [2021-11-04 09:13:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 09:13:37,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 09:13:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_ethtool_op_set_eee [2021-11-04 09:13:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_ethtool_op_set_eee [2021-11-04 09:13:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-04 09:13:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-04 09:13:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 09:13:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 09:13:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_disable_dma_irq [2021-11-04 09:13:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_disable_dma_irq [2021-11-04 09:13:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dvr_remove [2021-11-04 09:13:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dvr_remove [2021-11-04 09:13:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_tx_err [2021-11-04 09:13:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_tx_err [2021-11-04 09:13:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_ethtool_getsettings [2021-11-04 09:13:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_ethtool_getsettings [2021-11-04 09:13:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-04 09:13:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-04 09:13:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 09:13:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-04 09:13:37,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-04 09:13:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_resume [2021-11-04 09:13:37,739 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_resume [2021-11-04 09:15:27,159 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_6_switch_break: ldv_switch_6_#res := 0; [2021-11-04 09:15:27,159 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-04 09:15:27,160 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-04 09:15:27,160 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-04 09:15:27,160 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-04 09:15:27,161 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_6_switch_break#4: ldv_switch_6_#res := 0; [2021-11-04 09:15:27,161 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_6_switch_break#3: ldv_switch_6_#res := 0; [2021-11-04 09:15:27,161 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_6_switch_break#2: ldv_switch_6_#res := 0; [2021-11-04 09:15:27,161 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_5_switch_break#2: ldv_switch_5_#res := 0; [2021-11-04 09:15:27,161 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#2: ldv_switch_4_#res := 0; [2021-11-04 09:15:27,162 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#3: ldv_switch_4_#res := 0; [2021-11-04 09:15:27,162 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_5_switch_break: ldv_switch_5_#res := 0; [2021-11-04 09:15:27,162 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_8_switch_break#2: ldv_switch_8_#res := 0; [2021-11-04 09:15:27,162 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-04 09:15:27,162 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-04 09:15:27,162 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-04 09:15:27,162 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#2: ldv_switch_3_#res := 0; [2021-11-04 09:15:27,163 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-04 09:15:27,163 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break: ldv_switch_4_#res := 0; [2021-11-04 09:15:27,163 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_7_switch_break: ldv_switch_7_#res := 0; [2021-11-04 09:15:27,165 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-04 09:15:27,165 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_9_switch_break: ldv_switch_9_#res := 0; [2021-11-04 09:15:27,166 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_8_switch_break: ldv_switch_8_#res := 0; [2021-11-04 09:15:27,166 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-04 09:15:27,166 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-04 09:15:27,231 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 09:15:27,231 INFO L299 CfgBuilder]: Removed 11199 assume(true) statements. [2021-11-04 09:15:27,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 09:15:27 BoogieIcfgContainer [2021-11-04 09:15:27,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 09:15:27,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 09:15:27,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 09:15:27,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 09:15:27,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 09:13:24" (1/3) ... [2021-11-04 09:15:27,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1122e9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 09:15:27, skipping insertion in model container [2021-11-04 09:15:27,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:13:34" (2/3) ... [2021-11-04 09:15:27,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1122e9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 09:15:27, skipping insertion in model container [2021-11-04 09:15:27,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 09:15:27" (3/3) ... [2021-11-04 09:15:27,258 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i [2021-11-04 09:15:27,266 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 09:15:27,267 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-04 09:15:27,328 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 09:15:27,333 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 09:15:27,333 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-04 09:15:27,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 11419 states, 11241 states have (on average 1.3872431278356019) internal successors, (15594), 11256 states have internal predecessors, (15594), 134 states have call successors, (134), 37 states have call predecessors, (134), 37 states have return successors, (134), 132 states have call predecessors, (134), 134 states have call successors, (134) [2021-11-04 09:15:27,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-11-04 09:15:27,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:15:27,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:15:27,509 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting stmmac_init_rx_buffersErr0ASSERT_VIOLATIONERROR_FUNCTION === [stmmac_openErr0ASSERT_VIOLATIONERROR_FUNCTION, stmmac_openErr1ASSERT_VIOLATIONERROR_FUNCTION, stmmac_openErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-04 09:15:27,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:15:27,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1684659612, now seen corresponding path program 1 times [2021-11-04 09:15:27,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:15:27,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961755453] [2021-11-04 09:15:27,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:15:27,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:15:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:15:29,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 09:15:29,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:15:29,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961755453] [2021-11-04 09:15:29,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961755453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:15:29,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:15:29,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:15:29,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747776046] [2021-11-04 09:15:29,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:15:29,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:15:29,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:15:29,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:15:29,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:15:29,554 INFO L87 Difference]: Start difference. First operand has 11419 states, 11241 states have (on average 1.3872431278356019) internal successors, (15594), 11256 states have internal predecessors, (15594), 134 states have call successors, (134), 37 states have call predecessors, (134), 37 states have return successors, (134), 132 states have call predecessors, (134), 134 states have call successors, (134) Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:15:32,033 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:18:37,906 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:18:55,237 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:19:19,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:19:19,651 INFO L93 Difference]: Finished difference Result 32457 states and 45497 transitions. [2021-11-04 09:19:19,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:19:19,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 314 [2021-11-04 09:19:19,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:19:19,802 INFO L225 Difference]: With dead ends: 32457 [2021-11-04 09:19:19,802 INFO L226 Difference]: Without dead ends: 20998 [2021-11-04 09:19:19,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:19:19,890 INFO L933 BasicCegarLoop]: 852 mSDtfsCounter, 14522 mSDsluCounter, 15729 mSDsCounter, 0 mSdLazyCounter, 30433 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 214932.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14525 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 30455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 308.02ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 30433 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 226544.33ms IncrementalHoareTripleChecker+Time [2021-11-04 09:19:19,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14525 Valid, 1573 Invalid, 30455 Unknown, 0 Unchecked, 308.02ms Time], IncrementalHoareTripleChecker [19 Valid, 30433 Invalid, 3 Unknown, 0 Unchecked, 226544.33ms Time] [2021-11-04 09:19:19,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20998 states. [2021-11-04 09:19:20,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20998 to 20962. [2021-11-04 09:19:20,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20962 states, 20619 states have (on average 1.3674281002958437) internal successors, (28195), 20644 states have internal predecessors, (28195), 262 states have call successors, (262), 74 states have call predecessors, (262), 74 states have return successors, (265), 257 states have call predecessors, (265), 262 states have call successors, (265) [2021-11-04 09:19:20,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20962 states to 20962 states and 28722 transitions. [2021-11-04 09:19:20,555 INFO L78 Accepts]: Start accepts. Automaton has 20962 states and 28722 transitions. Word has length 314 [2021-11-04 09:19:20,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:19:20,559 INFO L470 AbstractCegarLoop]: Abstraction has 20962 states and 28722 transitions. [2021-11-04 09:19:20,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:19:20,562 INFO L276 IsEmpty]: Start isEmpty. Operand 20962 states and 28722 transitions. [2021-11-04 09:19:20,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-04 09:19:20,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:19:20,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:19:20,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 09:19:20,609 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting stmmac_init_rx_buffersErr0ASSERT_VIOLATIONERROR_FUNCTION === [stmmac_openErr0ASSERT_VIOLATIONERROR_FUNCTION, stmmac_openErr1ASSERT_VIOLATIONERROR_FUNCTION, stmmac_openErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-04 09:19:20,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:19:20,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1370892393, now seen corresponding path program 1 times [2021-11-04 09:19:20,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:19:20,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840622640] [2021-11-04 09:19:20,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:19:20,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:19:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:19:22,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 09:19:22,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:19:22,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840622640] [2021-11-04 09:19:22,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840622640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:19:22,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:19:22,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:19:22,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234123432] [2021-11-04 09:19:22,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:19:22,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:19:22,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:19:22,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:19:22,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:19:22,032 INFO L87 Difference]: Start difference. First operand 20962 states and 28722 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:19:24,459 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:19:56,693 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:20:45,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:22:28,420 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-04 09:23:01,939 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:23:15,169 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:23:43,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:23:43,740 INFO L93 Difference]: Finished difference Result 61212 states and 84218 transitions. [2021-11-04 09:23:43,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:23:43,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 315 [2021-11-04 09:23:43,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:23:43,943 INFO L225 Difference]: With dead ends: 61212 [2021-11-04 09:23:43,944 INFO L226 Difference]: Without dead ends: 40894 [2021-11-04 09:23:44,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:23:44,047 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 13792 mSDsluCounter, 14729 mSDsCounter, 0 mSdLazyCounter, 29120 mSolverCounterSat, 31 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 244561.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13795 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 29156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 237.64ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 29120 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 258461.59ms IncrementalHoareTripleChecker+Time [2021-11-04 09:23:44,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13795 Valid, 647 Invalid, 29156 Unknown, 0 Unchecked, 237.64ms Time], IncrementalHoareTripleChecker [31 Valid, 29120 Invalid, 5 Unknown, 0 Unchecked, 258461.59ms Time] [2021-11-04 09:23:44,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40894 states. [2021-11-04 09:23:44,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40894 to 40852. [2021-11-04 09:23:44,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40852 states, 40219 states have (on average 1.3713419030806335) internal successors, (55154), 40264 states have internal predecessors, (55154), 478 states have call successors, (478), 148 states have call predecessors, (478), 148 states have return successors, (487), 467 states have call predecessors, (487), 478 states have call successors, (487) [2021-11-04 09:23:45,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40852 states to 40852 states and 56119 transitions. [2021-11-04 09:23:45,087 INFO L78 Accepts]: Start accepts. Automaton has 40852 states and 56119 transitions. Word has length 315 [2021-11-04 09:23:45,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:23:45,088 INFO L470 AbstractCegarLoop]: Abstraction has 40852 states and 56119 transitions. [2021-11-04 09:23:45,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:23:45,088 INFO L276 IsEmpty]: Start isEmpty. Operand 40852 states and 56119 transitions. [2021-11-04 09:23:45,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-11-04 09:23:45,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:23:45,141 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:23:45,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 09:23:45,142 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting stmmac_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [stmmac_openErr0ASSERT_VIOLATIONERROR_FUNCTION, stmmac_openErr1ASSERT_VIOLATIONERROR_FUNCTION, stmmac_openErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-04 09:23:45,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:23:45,143 INFO L85 PathProgramCache]: Analyzing trace with hash 186120549, now seen corresponding path program 1 times [2021-11-04 09:23:45,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:23:45,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129608446] [2021-11-04 09:23:45,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:23:45,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:23:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:23:46,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 09:23:46,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:23:46,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129608446] [2021-11-04 09:23:46,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129608446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:23:46,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:23:46,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:23:46,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397730216] [2021-11-04 09:23:46,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:23:46,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:23:46,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:23:46,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:23:46,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:23:46,420 INFO L87 Difference]: Start difference. First operand 40852 states and 56119 transitions. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:23:48,829 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:24:20,896 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15