./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--stmicro--stmmac--stmmac.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 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-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--stmicro--stmmac--stmmac.ko-entry_point.cil.out.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 046f5371192e04edfcb404c42cbf904dba4f5de1b9feb443275d06b623bd9ae5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 23:27:46,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 23:27:46,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 23:27:46,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 23:27:46,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 23:27:46,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 23:27:46,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 23:27:46,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 23:27:46,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 23:27:46,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 23:27:46,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 23:27:46,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 23:27:46,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 23:27:46,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 23:27:46,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 23:27:46,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 23:27:46,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 23:27:46,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 23:27:46,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 23:27:46,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 23:27:46,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 23:27:46,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 23:27:46,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 23:27:46,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 23:27:46,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 23:27:46,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 23:27:46,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 23:27:46,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 23:27:46,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 23:27:46,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 23:27:46,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 23:27:46,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 23:27:46,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 23:27:46,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 23:27:46,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 23:27:46,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 23:27:46,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 23:27:46,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 23:27:46,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 23:27:46,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 23:27:46,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 23:27:46,478 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 23:27:46,511 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 23:27:46,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 23:27:46,512 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 23:27:46,512 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 23:27:46,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 23:27:46,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 23:27:46,514 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 23:27:46,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 23:27:46,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 23:27:46,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 23:27:46,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 23:27:46,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 23:27:46,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 23:27:46,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 23:27:46,516 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 23:27:46,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 23:27:46,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 23:27:46,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 23:27:46,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 23:27:46,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 23:27:46,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 23:27:46,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 23:27:46,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 23:27:46,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 23:27:46,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 23:27:46,518 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 23:27:46,519 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 23:27:46,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 23:27:46,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 23:27:46,519 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 046f5371192e04edfcb404c42cbf904dba4f5de1b9feb443275d06b623bd9ae5 [2021-11-22 23:27:46,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 23:27:46,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 23:27:46,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 23:27:46,772 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 23:27:46,773 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 23:27:46,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--stmicro--stmmac--stmmac.ko-entry_point.cil.out.i [2021-11-22 23:27:46,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4363a9728/c2f375f99d9742f3820e4577c99f08e5/FLAG7fa548dfe [2021-11-22 23:27:47,735 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 23:27:47,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--stmicro--stmmac--stmmac.ko-entry_point.cil.out.i [2021-11-22 23:27:47,813 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4363a9728/c2f375f99d9742f3820e4577c99f08e5/FLAG7fa548dfe [2021-11-22 23:27:48,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4363a9728/c2f375f99d9742f3820e4577c99f08e5 [2021-11-22 23:27:48,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 23:27:48,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 23:27:48,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 23:27:48,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 23:27:48,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 23:27:48,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:27:48" (1/1) ... [2021-11-22 23:27:48,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17ff6c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:27:48, skipping insertion in model container [2021-11-22 23:27:48,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:27:48" (1/1) ... [2021-11-22 23:27:48,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 23:27:48,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 23:27:48,947 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6674] [2021-11-22 23:27:48,948 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6675-6676] [2021-11-22 23:27:49,629 WARN L230 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-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--stmicro--stmmac--stmmac.ko-entry_point.cil.out.i[206918,206931] [2021-11-22 23:27:54,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:27:54,851 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 23:27:54,972 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6674] [2021-11-22 23:27:54,973 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6675-6676] [2021-11-22 23:27:54,980 WARN L230 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-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--stmicro--stmmac--stmmac.ko-entry_point.cil.out.i[206918,206931] [2021-11-22 23:27:55,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:27:55,932 INFO L208 MainTranslator]: Completed translation [2021-11-22 23:27:55,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:27:55 WrapperNode [2021-11-22 23:27:55,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 23:27:55,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 23:27:55,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 23:27:55,934 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 23:27:55,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:27:55" (1/1) ... [2021-11-22 23:27:56,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:27:55" (1/1) ... [2021-11-22 23:27:57,818 INFO L137 Inliner]: procedures = 855, calls = 12302, calls flagged for inlining = 2078, calls inlined = 5098, statements flattened = 65601 [2021-11-22 23:27:57,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 23:27:57,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 23:27:57,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 23:27:57,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 23:27:57,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:27:55" (1/1) ... [2021-11-22 23:27:57,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:27:55" (1/1) ... [2021-11-22 23:27:58,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:27:55" (1/1) ... [2021-11-22 23:27:58,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:27:55" (1/1) ... [2021-11-22 23:27:59,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:27:55" (1/1) ... [2021-11-22 23:27:59,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:27:55" (1/1) ... [2021-11-22 23:27:59,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:27:55" (1/1) ... [2021-11-22 23:28:00,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 23:28:00,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 23:28:00,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 23:28:00,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 23:28:00,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:27:55" (1/1) ... [2021-11-22 23:28:00,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 23:28:00,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 23:28:00,178 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) [2021-11-22 23:28:00,202 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 [2021-11-22 23:28:00,223 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_clean_desc3___0 [2021-11-22 23:28:00,223 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_clean_desc3___0 [2021-11-22 23:28:00,223 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_probe [2021-11-22 23:28:00,224 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_probe [2021-11-22 23:28:00,224 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_poll_controller [2021-11-22 23:28:00,224 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_poll_controller [2021-11-22 23:28:00,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-22 23:28:00,224 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_suspend [2021-11-22 23:28:00,224 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_suspend [2021-11-22 23:28:00,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 23:28:00,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 23:28:00,225 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_tx_skbufs [2021-11-22 23:28:00,225 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_tx_skbufs [2021-11-22 23:28:00,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 23:28:00,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 23:28:00,225 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-22 23:28:00,225 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_suspend [2021-11-22 23:28:00,226 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_suspend [2021-11-22 23:28:00,226 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_interrupt [2021-11-22 23:28:00,226 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_interrupt [2021-11-22 23:28:00,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 23:28:00,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 23:28:00,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 23:28:00,226 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-22 23:28:00,227 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_get_ethtool_stats [2021-11-22 23:28:00,227 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_get_ethtool_stats [2021-11-22 23:28:00,227 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_init_rx_buffers [2021-11-22 23:28:00,227 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_init_rx_buffers [2021-11-22 23:28:00,227 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_hw_setup [2021-11-22 23:28:00,227 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_hw_setup [2021-11-22 23:28:00,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 23:28:00,228 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-22 23:28:00,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-22 23:28:00,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 23:28:00,228 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_release [2021-11-22 23:28:00,228 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_release [2021-11-22 23:28:00,228 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_tx_timeout [2021-11-22 23:28:00,229 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_tx_timeout [2021-11-22 23:28:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_hw_init [2021-11-22 23:28:00,229 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_hw_init [2021-11-22 23:28:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 23:28:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_disable_eee_mode [2021-11-22 23:28:00,230 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_disable_eee_mode [2021-11-22 23:28:00,230 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_remove [2021-11-22 23:28:00,230 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_remove [2021-11-22 23:28:00,230 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_remove [2021-11-22 23:28:00,230 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_remove [2021-11-22 23:28:00,231 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dma_interrupt [2021-11-22 23:28:00,231 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dma_interrupt [2021-11-22 23:28:00,231 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_resume [2021-11-22 23:28:00,231 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_resume [2021-11-22 23:28:00,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 23:28:00,232 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_open [2021-11-22 23:28:00,232 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_open [2021-11-22 23:28:00,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-22 23:28:00,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-22 23:28:00,233 INFO L130 BoogieDeclarations]: Found specification of procedure init_dma_desc_rings [2021-11-22 23:28:00,233 INFO L138 BoogieDeclarations]: Found implementation of procedure init_dma_desc_rings [2021-11-22 23:28:00,233 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_get_hw_features [2021-11-22 23:28:00,233 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_get_hw_features [2021-11-22 23:28:00,233 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_probe [2021-11-22 23:28:00,234 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_probe [2021-11-22 23:28:00,234 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dvr_probe [2021-11-22 23:28:00,234 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dvr_probe [2021-11-22 23:28:00,234 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_resume [2021-11-22 23:28:00,234 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_resume [2021-11-22 23:28:00,235 INFO L130 BoogieDeclarations]: Found specification of procedure free_dma_desc_resources [2021-11-22 23:28:00,235 INFO L138 BoogieDeclarations]: Found implementation of procedure free_dma_desc_resources [2021-11-22 23:28:00,235 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_mdio_reset [2021-11-22 23:28:00,235 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_mdio_reset [2021-11-22 23:28:00,236 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-22 23:28:00,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-22 23:28:00,236 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_ethtool_op_set_eee [2021-11-22 23:28:00,236 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_ethtool_op_set_eee [2021-11-22 23:28:00,236 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-22 23:28:00,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-22 23:28:00,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-22 23:28:00,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 23:28:00,237 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_disable_dma_irq [2021-11-22 23:28:00,237 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_disable_dma_irq [2021-11-22 23:28:00,237 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dvr_remove [2021-11-22 23:28:00,237 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dvr_remove [2021-11-22 23:28:00,238 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_tx_err [2021-11-22 23:28:00,238 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_tx_err [2021-11-22 23:28:00,238 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_ethtool_getsettings [2021-11-22 23:28:00,238 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_ethtool_getsettings [2021-11-22 23:28:00,238 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-22 23:28:00,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-22 23:28:00,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 23:28:00,239 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-22 23:28:00,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-22 23:28:00,239 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_resume [2021-11-22 23:28:00,239 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_resume [2021-11-22 23:28:02,661 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 23:28:02,663 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 23:28:41,414 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 23:28:41,456 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 23:28:41,456 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 23:28:41,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:28:41 BoogieIcfgContainer [2021-11-22 23:28:41,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 23:28:41,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 23:28:41,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 23:28:41,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 23:28:41,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:27:48" (1/3) ... [2021-11-22 23:28:41,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676c71a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:28:41, skipping insertion in model container [2021-11-22 23:28:41,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:27:55" (2/3) ... [2021-11-22 23:28:41,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676c71a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:28:41, skipping insertion in model container [2021-11-22 23:28:41,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:28:41" (3/3) ... [2021-11-22 23:28:41,471 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--stmicro--stmmac--stmmac.ko-entry_point.cil.out.i [2021-11-22 23:28:41,475 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 23:28:41,475 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-22 23:28:41,551 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 23:28:41,559 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 [2021-11-22 23:28:41,559 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-22 23:28:41,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 10969 states, 10784 states have (on average 1.3801928783382789) internal successors, (14884), 10796 states have internal predecessors, (14884), 144 states have call successors, (144), 37 states have call predecessors, (144), 37 states have return successors, (144), 142 states have call predecessors, (144), 144 states have call successors, (144) [2021-11-22 23:28:41,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-22 23:28:41,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:28:41,751 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] [2021-11-22 23:28:41,752 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting stmmac_init_rx_buffersErr0ASSERT_VIOLATIONERROR_FUNCTION === [stmmac_hw_initErr0ASSERT_VIOLATIONERROR_FUNCTION, stmmac_hw_initErr1ASSERT_VIOLATIONERROR_FUNCTION, stmmac_init_rx_buffersErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:28:41,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:28:41,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1678182618, now seen corresponding path program 1 times [2021-11-22 23:28:41,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:28:41,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118180964] [2021-11-22 23:28:41,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:28:41,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:28:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:28:43,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:28:43,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:28:43,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118180964] [2021-11-22 23:28:43,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118180964] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:28:43,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:28:43,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:28:43,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611177266] [2021-11-22 23:28:43,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:28:43,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:28:43,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:28:43,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:28:43,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:28:43,171 INFO L87 Difference]: Start difference. First operand has 10969 states, 10784 states have (on average 1.3801928783382789) internal successors, (14884), 10796 states have internal predecessors, (14884), 144 states have call successors, (144), 37 states have call predecessors, (144), 37 states have return successors, (144), 142 states have call predecessors, (144), 144 states have call successors, (144) Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:28:44,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:28:44,729 INFO L93 Difference]: Finished difference Result 32008 states and 44769 transitions. [2021-11-22 23:28:44,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:28:44,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-22 23:28:44,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:28:44,899 INFO L225 Difference]: With dead ends: 32008 [2021-11-22 23:28:44,899 INFO L226 Difference]: Without dead ends: 20885 [2021-11-22 23:28:44,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:28:45,002 INFO L933 BasicCegarLoop]: 16401 mSDtfsCounter, 13844 mSDsluCounter, 14804 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13844 SdHoareTripleChecker+Valid, 31205 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 23:28:45,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13844 Valid, 31205 Invalid, 97 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 23:28:45,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20885 states. [2021-11-22 23:28:45,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20885 to 20627. [2021-11-22 23:28:45,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20627 states, 20278 states have (on average 1.3472729065982838) internal successors, (27320), 20299 states have internal predecessors, (27320), 275 states have call successors, (275), 74 states have call predecessors, (275), 71 states have return successors, (532), 266 states have call predecessors, (532), 275 states have call successors, (532) [2021-11-22 23:28:45,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20627 states to 20627 states and 28127 transitions. [2021-11-22 23:28:45,771 INFO L78 Accepts]: Start accepts. Automaton has 20627 states and 28127 transitions. Word has length 73 [2021-11-22 23:28:45,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:28:45,773 INFO L470 AbstractCegarLoop]: Abstraction has 20627 states and 28127 transitions. [2021-11-22 23:28:45,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:28:45,775 INFO L276 IsEmpty]: Start isEmpty. Operand 20627 states and 28127 transitions. [2021-11-22 23:28:45,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-22 23:28:45,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:28:45,792 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] [2021-11-22 23:28:45,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 23:28:45,793 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting stmmac_init_rx_buffersErr0ASSERT_VIOLATIONERROR_FUNCTION === [stmmac_hw_initErr0ASSERT_VIOLATIONERROR_FUNCTION, stmmac_hw_initErr1ASSERT_VIOLATIONERROR_FUNCTION, stmmac_init_rx_buffersErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:28:45,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:28:45,793 INFO L85 PathProgramCache]: Analyzing trace with hash 364200442, now seen corresponding path program 1 times [2021-11-22 23:28:45,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:28:45,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206283925] [2021-11-22 23:28:45,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:28:45,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:28:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:28:46,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:28:46,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:28:46,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206283925] [2021-11-22 23:28:46,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206283925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:28:46,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:28:46,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:28:46,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429345850] [2021-11-22 23:28:46,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:28:46,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:28:46,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:28:46,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:28:46,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:28:46,840 INFO L87 Difference]: Start difference. First operand 20627 states and 28127 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2021-11-22 23:28:48,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:28:48,427 INFO L93 Difference]: Finished difference Result 61641 states and 84079 transitions. [2021-11-22 23:28:48,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:28:48,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 77 [2021-11-22 23:28:48,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:28:48,656 INFO L225 Difference]: With dead ends: 61641 [2021-11-22 23:28:48,657 INFO L226 Difference]: Without dead ends: 41082 [2021-11-22 23:28:48,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:28:48,771 INFO L933 BasicCegarLoop]: 17635 mSDtfsCounter, 14637 mSDsluCounter, 14624 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14637 SdHoareTripleChecker+Valid, 32259 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 23:28:48,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14637 Valid, 32259 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 23:28:48,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41082 states. [2021-11-22 23:28:49,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41082 to 40714. [2021-11-22 23:28:49,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40714 states, 40029 states have (on average 1.349896325164256) internal successors, (54035), 40067 states have internal predecessors, (54035), 540 states have call successors, (540), 148 states have call predecessors, (540), 142 states have return successors, (1048), 524 states have call predecessors, (1048), 540 states have call successors, (1048) [2021-11-22 23:28:50,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40714 states to 40714 states and 55623 transitions. [2021-11-22 23:28:50,087 INFO L78 Accepts]: Start accepts. Automaton has 40714 states and 55623 transitions. Word has length 77 [2021-11-22 23:28:50,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:28:50,088 INFO L470 AbstractCegarLoop]: Abstraction has 40714 states and 55623 transitions. [2021-11-22 23:28:50,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2021-11-22 23:28:50,088 INFO L276 IsEmpty]: Start isEmpty. Operand 40714 states and 55623 transitions. [2021-11-22 23:28:50,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-22 23:28:50,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:28:50,106 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] [2021-11-22 23:28:50,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 23:28:50,106 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting stmmac_init_rx_buffersErr0ASSERT_VIOLATIONERROR_FUNCTION === [stmmac_hw_initErr0ASSERT_VIOLATIONERROR_FUNCTION, stmmac_hw_initErr1ASSERT_VIOLATIONERROR_FUNCTION, stmmac_init_rx_buffersErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:28:50,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:28:50,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1934808222, now seen corresponding path program 1 times [2021-11-22 23:28:50,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:28:50,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161745274] [2021-11-22 23:28:50,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:28:50,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:28:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:28:51,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:28:51,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:28:51,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161745274] [2021-11-22 23:28:51,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161745274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:28:51,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:28:51,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:28:51,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335730267] [2021-11-22 23:28:51,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:28:51,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:28:51,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:28:51,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:28:51,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:28:51,061 INFO L87 Difference]: Start difference. First operand 40714 states and 55623 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2021-11-22 23:28:53,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:28:53,308 INFO L93 Difference]: Finished difference Result 121480 states and 165889 transitions. [2021-11-22 23:28:53,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:28:53,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 82 [2021-11-22 23:28:53,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:28:53,720 INFO L225 Difference]: With dead ends: 121480 [2021-11-22 23:28:53,721 INFO L226 Difference]: Without dead ends: 80834 [2021-11-22 23:28:53,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:28:53,899 INFO L933 BasicCegarLoop]: 17668 mSDtfsCounter, 14449 mSDsluCounter, 14579 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14449 SdHoareTripleChecker+Valid, 32247 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 23:28:53,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14449 Valid, 32247 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 23:28:53,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80834 states. [2021-11-22 23:28:55,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80834 to 80620. [2021-11-22 23:28:56,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80620 states, 79277 states have (on average 1.3497105087225802) internal successors, (107001), 79351 states have internal predecessors, (107001), 1056 states have call successors, (1056), 296 states have call predecessors, (1056), 284 states have return successors, (2048), 1024 states have call predecessors, (2048), 1056 states have call successors, (2048) [2021-11-22 23:28:56,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80620 states to 80620 states and 110105 transitions. [2021-11-22 23:28:56,708 INFO L78 Accepts]: Start accepts. Automaton has 80620 states and 110105 transitions. Word has length 82 [2021-11-22 23:28:56,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:28:56,710 INFO L470 AbstractCegarLoop]: Abstraction has 80620 states and 110105 transitions. [2021-11-22 23:28:56,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2021-11-22 23:28:56,713 INFO L276 IsEmpty]: Start isEmpty. Operand 80620 states and 110105 transitions. [2021-11-22 23:28:56,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-22 23:28:56,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:28:56,734 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] [2021-11-22 23:28:56,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 23:28:56,735 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting stmmac_init_rx_buffersErr0ASSERT_VIOLATIONERROR_FUNCTION === [stmmac_hw_initErr0ASSERT_VIOLATIONERROR_FUNCTION, stmmac_hw_initErr1ASSERT_VIOLATIONERROR_FUNCTION, stmmac_init_rx_buffersErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:28:56,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:28:56,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1444518143, now seen corresponding path program 1 times [2021-11-22 23:28:56,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:28:56,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806763329] [2021-11-22 23:28:56,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:28:56,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:28:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:28:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:28:57,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:28:57,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806763329] [2021-11-22 23:28:57,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806763329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:28:57,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:28:57,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:28:57,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397702366] [2021-11-22 23:28:57,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:28:57,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:28:57,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:28:57,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:28:57,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:28:57,753 INFO L87 Difference]: Start difference. First operand 80620 states and 110105 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:29:01,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:29:01,646 INFO L93 Difference]: Finished difference Result 238150 states and 325389 transitions. [2021-11-22 23:29:01,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:29:01,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-22 23:29:01,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:29:02,555 INFO L225 Difference]: With dead ends: 238150 [2021-11-22 23:29:02,555 INFO L226 Difference]: Without dead ends: 157598 [2021-11-22 23:29:02,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:29:02,918 INFO L933 BasicCegarLoop]: 17817 mSDtfsCounter, 14085 mSDsluCounter, 14591 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14085 SdHoareTripleChecker+Valid, 32408 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 23:29:02,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14085 Valid, 32408 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 23:29:03,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157598 states. [2021-11-22 23:29:06,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157598 to 157288. [2021-11-22 23:29:06,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157288 states, 154677 states have (on average 1.351338595912773) internal successors, (209021), 154823 states have internal predecessors, (209021), 2040 states have call successors, (2040), 592 states have call predecessors, (2040), 568 states have return successors, (3952), 1976 states have call predecessors, (3952), 2040 states have call successors, (3952) [2021-11-22 23:29:07,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157288 states to 157288 states and 215013 transitions. [2021-11-22 23:29:07,983 INFO L78 Accepts]: Start accepts. Automaton has 157288 states and 215013 transitions. Word has length 95 [2021-11-22 23:29:07,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:29:07,984 INFO L470 AbstractCegarLoop]: Abstraction has 157288 states and 215013 transitions. [2021-11-22 23:29:07,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:29:07,984 INFO L276 IsEmpty]: Start isEmpty. Operand 157288 states and 215013 transitions. [2021-11-22 23:29:08,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-22 23:29:08,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:29:08,007 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] [2021-11-22 23:29:08,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 23:29:08,008 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting stmmac_init_rx_buffersErr0ASSERT_VIOLATIONERROR_FUNCTION === [stmmac_hw_initErr0ASSERT_VIOLATIONERROR_FUNCTION, stmmac_hw_initErr1ASSERT_VIOLATIONERROR_FUNCTION, stmmac_init_rx_buffersErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:29:08,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:29:08,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1086059489, now seen corresponding path program 1 times [2021-11-22 23:29:08,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:29:08,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188089915] [2021-11-22 23:29:08,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:29:08,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:29:08,372 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 23:29:08,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1649552790] [2021-11-22 23:29:08,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:29:08,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:29:08,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 23:29:08,374 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 23:29:08,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 23:29:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:29:12,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 17929 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 23:29:12,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:29:12,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:29:12,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 23:29:12,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:29:12,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188089915] [2021-11-22 23:29:12,875 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 23:29:12,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649552790] [2021-11-22 23:29:12,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649552790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:29:12,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:29:12,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:29:12,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072756231] [2021-11-22 23:29:12,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:29:12,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:29:12,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:29:12,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:29:12,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:29:12,877 INFO L87 Difference]: Start difference. First operand 157288 states and 215013 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)