./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 4d014703 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-4d01470 [2021-11-02 23:30:38,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:30:38,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:30:38,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:30:38,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:30:38,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:30:38,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:30:38,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:30:38,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:30:38,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:30:38,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:30:38,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:30:38,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:30:38,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:30:38,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:30:38,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:30:38,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:30:38,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:30:38,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:30:38,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:30:38,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:30:38,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:30:38,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:30:38,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:30:38,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:30:38,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:30:38,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:30:38,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:30:38,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:30:38,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:30:38,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:30:38,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:30:38,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:30:38,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:30:38,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:30:38,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:30:38,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:30:38,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:30:38,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:30:38,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:30:38,207 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:30:38,208 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 23:30:38,227 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:30:38,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:30:38,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:30:38,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:30:38,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:30:38,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:30:38,230 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:30:38,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:30:38,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:30:38,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:30:38,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 23:30:38,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:30:38,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 23:30:38,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 23:30:38,232 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:30:38,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 23:30:38,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:30:38,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:30:38,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:30:38,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:30:38,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:30:38,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:30:38,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 23:30:38,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 23:30:38,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 23:30:38,234 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 23:30:38,234 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 23:30:38,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 23:30:38,234 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:30:38,234 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c25ee40b84da0e037e1d80db414ed17491ea7807f66e1b888adc8df58baa009c [2021-11-02 23:30:38,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:30:38,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:30:38,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:30:38,545 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:30:38,551 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:30:38,553 INFO L432 ainManager$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 [2021-11-02 23:30:38,620 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b74a5150/98dfe72f615442a19babbd039b8fee77/FLAGb073a49ee [2021-11-02 23:30:39,688 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:30:39,690 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 [2021-11-02 23:30:39,792 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b74a5150/98dfe72f615442a19babbd039b8fee77/FLAGb073a49ee [2021-11-02 23:30:40,086 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b74a5150/98dfe72f615442a19babbd039b8fee77 [2021-11-02 23:30:40,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:30:40,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 23:30:40,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:30:40,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:30:40,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:30:40,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:30:40" (1/1) ... [2021-11-02 23:30:40,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46475e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:30:40, skipping insertion in model container [2021-11-02 23:30:40,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:30:40" (1/1) ... [2021-11-02 23:30:40,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:30:40,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:30:51,847 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] [2021-11-02 23:30:51,850 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] [2021-11-02 23:30:51,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:30:52,044 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:30:52,863 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] [2021-11-02 23:30:52,864 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] [2021-11-02 23:30:52,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:30:53,432 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:30:53,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:30:53 WrapperNode [2021-11-02 23:30:53,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:30:53,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 23:30:53,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 23:30:53,434 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 23:30:53,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:30:53" (1/1) ... [2021-11-02 23:30:53,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:30:53" (1/1) ... [2021-11-02 23:30:55,492 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 23:30:55,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:30:55,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:30:55,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:30:55,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:30:53" (1/1) ... [2021-11-02 23:30:55,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:30:53" (1/1) ... [2021-11-02 23:30:56,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:30:53" (1/1) ... [2021-11-02 23:30:56,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:30:53" (1/1) ... [2021-11-02 23:30:57,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:30:53" (1/1) ... [2021-11-02 23:30:57,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:30:53" (1/1) ... [2021-11-02 23:30:57,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:30:53" (1/1) ... [2021-11-02 23:30:58,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:30:58,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:30:58,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:30:58,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:30:58,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:30:53" (1/1) ... [2021-11-02 23:30:58,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:30:58,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 23:30:58,272 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) [2021-11-02 23:30:58,307 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_clean_desc3___0 [2021-11-02 23:30:58,292 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 [2021-11-02 23:30:58,307 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_clean_desc3___0 [2021-11-02 23:30:58,309 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_probe [2021-11-02 23:30:58,309 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_probe [2021-11-02 23:30:58,309 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_poll_controller [2021-11-02 23:30:58,309 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_poll_controller [2021-11-02 23:30:58,310 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_suspend [2021-11-02 23:30:58,310 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_suspend [2021-11-02 23:30:58,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 23:30:58,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 23:30:58,310 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_tx_skbufs [2021-11-02 23:30:58,310 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_tx_skbufs [2021-11-02 23:30:58,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 23:30:58,311 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 23:30:58,311 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_suspend [2021-11-02 23:30:58,311 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_suspend [2021-11-02 23:30:58,311 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_interrupt [2021-11-02 23:30:58,311 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_interrupt [2021-11-02 23:30:58,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:30:58,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:30:58,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 23:30:58,312 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-02 23:30:58,312 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_get_ethtool_stats [2021-11-02 23:30:58,313 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_get_ethtool_stats [2021-11-02 23:30:58,313 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_init_rx_buffers [2021-11-02 23:30:58,313 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_init_rx_buffers [2021-11-02 23:30:58,313 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_hw_setup [2021-11-02 23:30:58,313 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_hw_setup [2021-11-02 23:30:58,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:30:58,313 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-02 23:30:58,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-02 23:30:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 23:30:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_release [2021-11-02 23:30:58,314 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_release [2021-11-02 23:30:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_tx_timeout [2021-11-02 23:30:58,314 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_tx_timeout [2021-11-02 23:30:58,315 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_hw_init [2021-11-02 23:30:58,315 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_hw_init [2021-11-02 23:30:58,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 23:30:58,315 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_disable_eee_mode [2021-11-02 23:30:58,315 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_disable_eee_mode [2021-11-02 23:30:58,316 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_remove [2021-11-02 23:30:58,316 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_remove [2021-11-02 23:30:58,316 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_remove [2021-11-02 23:30:58,316 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_remove [2021-11-02 23:30:58,316 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dma_interrupt [2021-11-02 23:30:58,317 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dma_interrupt [2021-11-02 23:30:58,317 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_resume [2021-11-02 23:30:58,317 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_resume [2021-11-02 23:30:58,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 23:30:58,317 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_open [2021-11-02 23:30:58,318 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_open [2021-11-02 23:30:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 23:30:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 23:30:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure init_dma_desc_rings [2021-11-02 23:30:58,318 INFO L138 BoogieDeclarations]: Found implementation of procedure init_dma_desc_rings [2021-11-02 23:30:58,319 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_get_hw_features [2021-11-02 23:30:58,319 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_get_hw_features [2021-11-02 23:30:58,320 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_probe [2021-11-02 23:30:58,320 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_probe [2021-11-02 23:30:58,320 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dvr_probe [2021-11-02 23:30:58,320 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dvr_probe [2021-11-02 23:30:58,320 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_resume [2021-11-02 23:30:58,321 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_resume [2021-11-02 23:30:58,321 INFO L130 BoogieDeclarations]: Found specification of procedure free_dma_desc_resources [2021-11-02 23:30:58,321 INFO L138 BoogieDeclarations]: Found implementation of procedure free_dma_desc_resources [2021-11-02 23:30:58,321 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_mdio_reset [2021-11-02 23:30:58,321 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_mdio_reset [2021-11-02 23:30:58,322 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 23:30:58,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 23:30:58,323 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_ethtool_op_set_eee [2021-11-02 23:30:58,323 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_ethtool_op_set_eee [2021-11-02 23:30:58,323 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-02 23:30:58,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-02 23:30:58,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 23:30:58,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 23:30:58,324 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_disable_dma_irq [2021-11-02 23:30:58,324 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_disable_dma_irq [2021-11-02 23:30:58,324 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dvr_remove [2021-11-02 23:30:58,324 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dvr_remove [2021-11-02 23:30:58,324 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_tx_err [2021-11-02 23:30:58,324 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_tx_err [2021-11-02 23:30:58,324 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_ethtool_getsettings [2021-11-02 23:30:58,325 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_ethtool_getsettings [2021-11-02 23:30:58,325 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 23:30:58,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 23:30:58,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 23:30:58,325 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-02 23:30:58,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-02 23:30:58,326 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_resume [2021-11-02 23:30:58,326 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_resume [2021-11-02 23:32:51,063 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_6_switch_break: ldv_switch_6_#res := 0; [2021-11-02 23:32:51,063 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-02 23:32:51,064 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-02 23:32:51,064 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-02 23:32:51,064 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-02 23:32:51,064 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_6_switch_break#4: ldv_switch_6_#res := 0; [2021-11-02 23:32:51,064 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_6_switch_break#3: ldv_switch_6_#res := 0; [2021-11-02 23:32:51,064 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_6_switch_break#2: ldv_switch_6_#res := 0; [2021-11-02 23:32:51,065 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_5_switch_break#2: ldv_switch_5_#res := 0; [2021-11-02 23:32:51,065 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#2: ldv_switch_4_#res := 0; [2021-11-02 23:32:51,065 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#3: ldv_switch_4_#res := 0; [2021-11-02 23:32:51,065 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_5_switch_break: ldv_switch_5_#res := 0; [2021-11-02 23:32:51,065 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_8_switch_break#2: ldv_switch_8_#res := 0; [2021-11-02 23:32:51,066 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-02 23:32:51,066 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-02 23:32:51,066 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-02 23:32:51,066 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#2: ldv_switch_3_#res := 0; [2021-11-02 23:32:51,067 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-02 23:32:51,067 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break: ldv_switch_4_#res := 0; [2021-11-02 23:32:51,067 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_7_switch_break: ldv_switch_7_#res := 0; [2021-11-02 23:32:51,069 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-02 23:32:51,069 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_9_switch_break: ldv_switch_9_#res := 0; [2021-11-02 23:32:51,070 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_8_switch_break: ldv_switch_8_#res := 0; [2021-11-02 23:32:51,070 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-02 23:32:51,070 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-02 23:32:51,152 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:32:51,152 INFO L299 CfgBuilder]: Removed 11199 assume(true) statements. [2021-11-02 23:32:51,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:32:51 BoogieIcfgContainer [2021-11-02 23:32:51,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:32:51,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:32:51,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:32:51,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:32:51,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:30:40" (1/3) ... [2021-11-02 23:32:51,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@171d63ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:32:51, skipping insertion in model container [2021-11-02 23:32:51,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:30:53" (2/3) ... [2021-11-02 23:32:51,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@171d63ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:32:51, skipping insertion in model container [2021-11-02 23:32:51,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:32:51" (3/3) ... [2021-11-02 23:32:51,183 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i [2021-11-02 23:32:51,192 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:32:51,193 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-02 23:32:51,285 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:32:51,294 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 [2021-11-02 23:32:51,295 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-02 23:32:51,455 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) [2021-11-02 23:32:51,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-11-02 23:32:51,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:32:51,528 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] [2021-11-02 23:32:51,529 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)] === [2021-11-02 23:32:51,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:32:51,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1684659612, now seen corresponding path program 1 times [2021-11-02 23:32:51,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:32:51,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385932107] [2021-11-02 23:32:51,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:32:51,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:32:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:32:54,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:32:54,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:32:54,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385932107] [2021-11-02 23:32:54,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385932107] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:32:54,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:32:54,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:32:54,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830354712] [2021-11-02 23:32:54,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:32:54,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:32:54,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:32:54,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:32:54,314 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) [2021-11-02 23:32:56,860 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:33:33,681 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:34:18,756 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:36:11,412 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-02 23:36:27,357 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:36:46,329 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:37:12,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:37:12,960 INFO L93 Difference]: Finished difference Result 32457 states and 45497 transitions. [2021-11-02 23:37:12,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:37:12,963 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 [2021-11-02 23:37:12,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:37:13,131 INFO L225 Difference]: With dead ends: 32457 [2021-11-02 23:37:13,131 INFO L226 Difference]: Without dead ends: 20998 [2021-11-02 23:37:13,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.34ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:37:13,222 INFO L933 BasicCegarLoop]: 852 mSDtfsCounter, 14522 mSDsluCounter, 15729 mSDsCounter, 0 mSdLazyCounter, 30432 mSolverCounterSat, 19 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 242638.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14525 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 30455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 302.84ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 30432 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 254847.13ms IncrementalHoareTripleChecker+Time [2021-11-02 23:37:13,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14525 Valid, 1573 Invalid, 30455 Unknown, 0 Unchecked, 302.84ms Time], IncrementalHoareTripleChecker [19 Valid, 30432 Invalid, 4 Unknown, 0 Unchecked, 254847.13ms Time] [2021-11-02 23:37:13,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20998 states. [2021-11-02 23:37:13,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20998 to 20962. [2021-11-02 23:37:13,890 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) [2021-11-02 23:37:14,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20962 states to 20962 states and 28722 transitions. [2021-11-02 23:37:14,150 INFO L78 Accepts]: Start accepts. Automaton has 20962 states and 28722 transitions. Word has length 314 [2021-11-02 23:37:14,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:37:14,154 INFO L470 AbstractCegarLoop]: Abstraction has 20962 states and 28722 transitions. [2021-11-02 23:37:14,155 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) [2021-11-02 23:37:14,156 INFO L276 IsEmpty]: Start isEmpty. Operand 20962 states and 28722 transitions. [2021-11-02 23:37:14,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-02 23:37:14,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:37:14,214 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] [2021-11-02 23:37:14,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 23:37:14,215 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)] === [2021-11-02 23:37:14,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:37:14,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1370892393, now seen corresponding path program 1 times [2021-11-02 23:37:14,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:37:14,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066619084] [2021-11-02 23:37:14,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:37:14,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:37:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:37:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:37:15,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:37:15,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066619084] [2021-11-02 23:37:15,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066619084] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:37:15,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:37:15,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:37:15,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282060818] [2021-11-02 23:37:15,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:37:15,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:37:15,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:37:15,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:37:15,874 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) [2021-11-02 23:37:18,537 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:37:53,024 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:38:44,126 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:41:06,295 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:41:19,842 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:41:49,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:41:49,589 INFO L93 Difference]: Finished difference Result 61212 states and 84218 transitions. [2021-11-02 23:41:49,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:41:49,590 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 [2021-11-02 23:41:49,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:41:49,795 INFO L225 Difference]: With dead ends: 61212 [2021-11-02 23:41:49,795 INFO L226 Difference]: Without dead ends: 40894 [2021-11-02 23:41:49,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.39ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:41:49,895 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 13792 mSDsluCounter, 14729 mSDsCounter, 0 mSdLazyCounter, 29121 mSolverCounterSat, 31 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 256115.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13795 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 29156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 214.11ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 29121 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 270605.18ms IncrementalHoareTripleChecker+Time [2021-11-02 23:41:49,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13795 Valid, 647 Invalid, 29156 Unknown, 0 Unchecked, 214.11ms Time], IncrementalHoareTripleChecker [31 Valid, 29121 Invalid, 4 Unknown, 0 Unchecked, 270605.18ms Time] [2021-11-02 23:41:49,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40894 states. [2021-11-02 23:41:50,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40894 to 40852. [2021-11-02 23:41:50,868 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) [2021-11-02 23:41:51,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40852 states to 40852 states and 56119 transitions. [2021-11-02 23:41:51,040 INFO L78 Accepts]: Start accepts. Automaton has 40852 states and 56119 transitions. Word has length 315 [2021-11-02 23:41:51,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:41:51,041 INFO L470 AbstractCegarLoop]: Abstraction has 40852 states and 56119 transitions. [2021-11-02 23:41:51,041 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) [2021-11-02 23:41:51,042 INFO L276 IsEmpty]: Start isEmpty. Operand 40852 states and 56119 transitions. [2021-11-02 23:41:51,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-11-02 23:41:51,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:41:51,110 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] [2021-11-02 23:41:51,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 23:41:51,111 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)] === [2021-11-02 23:41:51,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:41:51,112 INFO L85 PathProgramCache]: Analyzing trace with hash 186120549, now seen corresponding path program 1 times [2021-11-02 23:41:51,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:41:51,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049218957] [2021-11-02 23:41:51,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:41:51,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:41:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:41:53,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:41:53,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:41:53,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049218957] [2021-11-02 23:41:53,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049218957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:41:53,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:41:53,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:41:53,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554863434] [2021-11-02 23:41:53,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:41:53,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:41:53,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:41:53,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:41:53,025 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) [2021-11-02 23:41:55,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:43:22,773 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15