./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 c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-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-wip.dd.seqcomp-c36dfa3 [2021-11-04 04:34:16,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 04:34:16,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 04:34:16,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 04:34:16,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 04:34:16,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 04:34:16,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 04:34:16,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 04:34:16,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 04:34:16,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 04:34:16,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 04:34:16,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 04:34:16,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 04:34:16,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 04:34:16,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 04:34:16,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 04:34:16,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 04:34:16,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 04:34:16,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 04:34:16,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 04:34:16,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 04:34:16,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 04:34:16,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 04:34:16,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 04:34:16,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 04:34:16,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 04:34:16,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 04:34:16,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 04:34:16,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 04:34:16,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 04:34:16,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 04:34:16,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 04:34:16,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 04:34:16,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 04:34:16,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 04:34:16,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 04:34:16,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 04:34:16,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 04:34:16,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 04:34:16,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 04:34:16,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 04:34:16,153 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 04:34:16,177 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 04:34:16,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 04:34:16,186 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 04:34:16,186 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 04:34:16,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 04:34:16,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 04:34:16,188 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 04:34:16,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 04:34:16,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 04:34:16,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 04:34:16,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 04:34:16,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 04:34:16,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 04:34:16,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 04:34:16,201 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 04:34:16,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 04:34:16,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 04:34:16,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 04:34:16,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 04:34:16,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 04:34:16,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 04:34:16,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 04:34:16,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 04:34:16,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 04:34:16,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 04:34:16,202 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 04:34:16,202 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 04:34:16,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 04:34:16,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 04:34:16,203 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 046f5371192e04edfcb404c42cbf904dba4f5de1b9feb443275d06b623bd9ae5 [2021-11-04 04:34:16,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 04:34:16,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 04:34:16,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 04:34:16,428 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 04:34:16,429 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 04:34:16,430 INFO L432 ainManager$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 [2021-11-04 04:34:16,480 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe9b15be0/d296b52906f04f399c34e7b31d699c6f/FLAG7e841e296 [2021-11-04 04:34:17,354 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 04:34:17,355 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 [2021-11-04 04:34:17,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe9b15be0/d296b52906f04f399c34e7b31d699c6f/FLAG7e841e296 [2021-11-04 04:34:17,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe9b15be0/d296b52906f04f399c34e7b31d699c6f [2021-11-04 04:34:17,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 04:34:17,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 04:34:17,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 04:34:17,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 04:34:17,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 04:34:17,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:34:17" (1/1) ... [2021-11-04 04:34:17,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48eb89d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:34:17, skipping insertion in model container [2021-11-04 04:34:17,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:34:17" (1/1) ... [2021-11-04 04:34:17,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 04:34:17,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 04:34:18,192 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6674] [2021-11-04 04:34:18,192 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6675-6676] [2021-11-04 04:34:18,856 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-3.16-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] [2021-11-04 04:34:23,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 04:34:24,019 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 04:34:24,160 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6674] [2021-11-04 04:34:24,161 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6675-6676] [2021-11-04 04:34:24,176 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-3.16-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] [2021-11-04 04:34:24,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 04:34:25,233 INFO L208 MainTranslator]: Completed translation [2021-11-04 04:34:25,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:34:25 WrapperNode [2021-11-04 04:34:25,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 04:34:25,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 04:34:25,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 04:34:25,235 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 04:34:25,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:34:25" (1/1) ... [2021-11-04 04:34:25,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:34:25" (1/1) ... [2021-11-04 04:34:27,358 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 04:34:27,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 04:34:27,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 04:34:27,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 04:34:27,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:34:25" (1/1) ... [2021-11-04 04:34:27,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:34:25" (1/1) ... [2021-11-04 04:34:27,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:34:25" (1/1) ... [2021-11-04 04:34:27,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:34:25" (1/1) ... [2021-11-04 04:34:29,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:34:25" (1/1) ... [2021-11-04 04:34:29,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:34:25" (1/1) ... [2021-11-04 04:34:29,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:34:25" (1/1) ... [2021-11-04 04:34:29,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 04:34:29,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 04:34:29,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 04:34:29,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 04:34:29,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:34:25" (1/1) ... [2021-11-04 04:34:29,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 04:34:29,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:34:29,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 04:34:29,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 04:34:29,805 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_clean_desc3___0 [2021-11-04 04:34:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_clean_desc3___0 [2021-11-04 04:34:29,805 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_probe [2021-11-04 04:34:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_probe [2021-11-04 04:34:29,806 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_poll_controller [2021-11-04 04:34:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_poll_controller [2021-11-04 04:34:29,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-04 04:34:29,806 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_suspend [2021-11-04 04:34:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_suspend [2021-11-04 04:34:29,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 04:34:29,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 04:34:29,807 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_tx_skbufs [2021-11-04 04:34:29,807 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_tx_skbufs [2021-11-04 04:34:29,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 04:34:29,807 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 04:34:29,807 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_suspend [2021-11-04 04:34:29,807 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_suspend [2021-11-04 04:34:29,807 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_interrupt [2021-11-04 04:34:29,808 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_interrupt [2021-11-04 04:34:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 04:34:29,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 04:34:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 04:34:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-04 04:34:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_get_ethtool_stats [2021-11-04 04:34:29,808 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_get_ethtool_stats [2021-11-04 04:34:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_init_rx_buffers [2021-11-04 04:34:29,809 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_init_rx_buffers [2021-11-04 04:34:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_hw_setup [2021-11-04 04:34:29,809 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_hw_setup [2021-11-04 04:34:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 04:34:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-04 04:34:29,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-04 04:34:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 04:34:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_release [2021-11-04 04:34:29,810 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_release [2021-11-04 04:34:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_tx_timeout [2021-11-04 04:34:29,810 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_tx_timeout [2021-11-04 04:34:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_hw_init [2021-11-04 04:34:29,810 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_hw_init [2021-11-04 04:34:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 04:34:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_disable_eee_mode [2021-11-04 04:34:29,811 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_disable_eee_mode [2021-11-04 04:34:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_remove [2021-11-04 04:34:29,811 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_remove [2021-11-04 04:34:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_remove [2021-11-04 04:34:29,811 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_remove [2021-11-04 04:34:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dma_interrupt [2021-11-04 04:34:29,812 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dma_interrupt [2021-11-04 04:34:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_resume [2021-11-04 04:34:29,812 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_resume [2021-11-04 04:34:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 04:34:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_open [2021-11-04 04:34:29,812 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_open [2021-11-04 04:34:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 04:34:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 04:34:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure init_dma_desc_rings [2021-11-04 04:34:29,813 INFO L138 BoogieDeclarations]: Found implementation of procedure init_dma_desc_rings [2021-11-04 04:34:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_get_hw_features [2021-11-04 04:34:29,813 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_get_hw_features [2021-11-04 04:34:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_probe [2021-11-04 04:34:29,814 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_probe [2021-11-04 04:34:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dvr_probe [2021-11-04 04:34:29,814 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dvr_probe [2021-11-04 04:34:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_resume [2021-11-04 04:34:29,814 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_resume [2021-11-04 04:34:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure free_dma_desc_resources [2021-11-04 04:34:29,814 INFO L138 BoogieDeclarations]: Found implementation of procedure free_dma_desc_resources [2021-11-04 04:34:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_mdio_reset [2021-11-04 04:34:29,815 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_mdio_reset [2021-11-04 04:34:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 04:34:29,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 04:34:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_ethtool_op_set_eee [2021-11-04 04:34:29,815 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_ethtool_op_set_eee [2021-11-04 04:34:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-04 04:34:29,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-04 04:34:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 04:34:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 04:34:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_disable_dma_irq [2021-11-04 04:34:29,816 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_disable_dma_irq [2021-11-04 04:34:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dvr_remove [2021-11-04 04:34:29,816 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dvr_remove [2021-11-04 04:34:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_tx_err [2021-11-04 04:34:29,817 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_tx_err [2021-11-04 04:34:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_ethtool_getsettings [2021-11-04 04:34:29,817 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_ethtool_getsettings [2021-11-04 04:34:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-04 04:34:29,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-04 04:34:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 04:34:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-04 04:34:29,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-04 04:34:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_resume [2021-11-04 04:34:29,818 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_resume [2021-11-04 04:35:43,844 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 04:35:43,845 INFO L299 CfgBuilder]: Removed 10186 assume(true) statements. [2021-11-04 04:35:43,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:35:43 BoogieIcfgContainer [2021-11-04 04:35:43,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 04:35:43,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 04:35:43,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 04:35:43,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 04:35:43,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 04:34:17" (1/3) ... [2021-11-04 04:35:43,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bda447e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:35:43, skipping insertion in model container [2021-11-04 04:35:43,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:34:25" (2/3) ... [2021-11-04 04:35:43,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bda447e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:35:43, skipping insertion in model container [2021-11-04 04:35:43,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:35:43" (3/3) ... [2021-11-04 04:35:43,866 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 [2021-11-04 04:35:43,874 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 04:35:43,874 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-04 04:35:43,955 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 04:35:43,967 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 04:35:43,968 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-04 04:35:44,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 9857 states, 9672 states have (on average 1.423904052936311) internal successors, (13772), 9684 states have internal predecessors, (13772), 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) [2021-11-04 04:35:44,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-04 04:35:44,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:35:44,161 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] [2021-11-04 04:35:44,162 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] === [2021-11-04 04:35:44,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:35:44,167 INFO L85 PathProgramCache]: Analyzing trace with hash -942835593, now seen corresponding path program 1 times [2021-11-04 04:35:44,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:35:44,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038174106] [2021-11-04 04:35:44,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:35:44,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:35:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:35:46,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:35:46,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:35:46,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038174106] [2021-11-04 04:35:46,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038174106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:35:46,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:35:46,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:35:46,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590777052] [2021-11-04 04:35:46,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:35:46,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:35:46,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:35:46,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:35:46,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:35:46,180 INFO L87 Difference]: Start difference. First operand has 9857 states, 9672 states have (on average 1.423904052936311) internal successors, (13772), 9684 states have internal predecessors, (13772), 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) [2021-11-04 04:35:48,735 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:35:49,773 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:37:27,787 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:38:20,087 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:38:24,733 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:38:32,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:38:34,054 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:38:55,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:38:55,758 INFO L93 Difference]: Finished difference Result 19736 states and 28308 transitions. [2021-11-04 04:38:55,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:38:55,761 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 [2021-11-04 04:38:55,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:38:55,842 INFO L225 Difference]: With dead ends: 19736 [2021-11-04 04:38:55,843 INFO L226 Difference]: Without dead ends: 9808 [2021-11-04 04:38:55,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.09ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:38:55,913 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 0 mSDsluCounter, 13657 mSDsCounter, 0 mSdLazyCounter, 26769 mSolverCounterSat, 52 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 178759.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 26826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 210.10ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 26769 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 187748.87ms IncrementalHoareTripleChecker+Time [2021-11-04 04:38:55,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 714 Invalid, 26826 Unknown, 0 Unchecked, 210.10ms Time], IncrementalHoareTripleChecker [52 Valid, 26769 Invalid, 5 Unknown, 0 Unchecked, 187748.87ms Time] [2021-11-04 04:38:55,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9808 states. [2021-11-04 04:38:56,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9808 to 9808. [2021-11-04 04:38:56,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9808 states, 9624 states have (on average 1.3873649210307564) internal successors, (13352), 9635 states have internal predecessors, (13352), 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) [2021-11-04 04:38:56,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9808 states to 9808 states and 13640 transitions. [2021-11-04 04:38:56,291 INFO L78 Accepts]: Start accepts. Automaton has 9808 states and 13640 transitions. Word has length 73 [2021-11-04 04:38:56,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:38:56,292 INFO L470 AbstractCegarLoop]: Abstraction has 9808 states and 13640 transitions. [2021-11-04 04:38:56,293 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) [2021-11-04 04:38:56,294 INFO L276 IsEmpty]: Start isEmpty. Operand 9808 states and 13640 transitions. [2021-11-04 04:38:56,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-04 04:38:56,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:38:56,319 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] [2021-11-04 04:38:56,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 04:38:56,320 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] === [2021-11-04 04:38:56,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:38:56,321 INFO L85 PathProgramCache]: Analyzing trace with hash 376197114, now seen corresponding path program 1 times [2021-11-04 04:38:56,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:38:56,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116311643] [2021-11-04 04:38:56,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:38:56,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:38:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:38:57,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 04:38:57,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:38:57,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116311643] [2021-11-04 04:38:57,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116311643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:38:57,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:38:57,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:38:57,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335691506] [2021-11-04 04:38:57,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:38:57,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:38:57,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:38:57,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:38:57,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:38:57,488 INFO L87 Difference]: Start difference. First operand 9808 states and 13640 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-11-04 04:38:59,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:39:50,010 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:40:59,524 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:42:24,913 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 [] [2021-11-04 04:42:51,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:42:51,321 INFO L93 Difference]: Finished difference Result 28544 states and 39930 transitions. [2021-11-04 04:42:51,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:42:51,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 74 [2021-11-04 04:42:51,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:42:51,443 INFO L225 Difference]: With dead ends: 28544 [2021-11-04 04:42:51,444 INFO L226 Difference]: Without dead ends: 18805 [2021-11-04 04:42:51,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.39ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:42:51,502 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 12595 mSDsluCounter, 13624 mSDsCounter, 0 mSdLazyCounter, 27750 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 219176.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12595 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 27760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 224.14ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27750 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 231424.00ms IncrementalHoareTripleChecker+Time [2021-11-04 04:42:51,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12595 Valid, 967 Invalid, 27760 Unknown, 0 Unchecked, 224.14ms Time], IncrementalHoareTripleChecker [7 Valid, 27750 Invalid, 3 Unknown, 0 Unchecked, 231424.00ms Time] [2021-11-04 04:42:51,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18805 states. [2021-11-04 04:42:52,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18805 to 18546. [2021-11-04 04:42:52,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18546 states, 18197 states have (on average 1.3862175083805022) internal successors, (25225), 18218 states have internal predecessors, (25225), 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) [2021-11-04 04:42:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18546 states to 18546 states and 26032 transitions. [2021-11-04 04:42:52,124 INFO L78 Accepts]: Start accepts. Automaton has 18546 states and 26032 transitions. Word has length 74 [2021-11-04 04:42:52,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:42:52,125 INFO L470 AbstractCegarLoop]: Abstraction has 18546 states and 26032 transitions. [2021-11-04 04:42:52,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-11-04 04:42:52,125 INFO L276 IsEmpty]: Start isEmpty. Operand 18546 states and 26032 transitions. [2021-11-04 04:42:52,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-04 04:42:52,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:42:52,138 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] [2021-11-04 04:42:52,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 04:42:52,139 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] === [2021-11-04 04:42:52,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:42:52,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1807666124, now seen corresponding path program 1 times [2021-11-04 04:42:52,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:42:52,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084510170] [2021-11-04 04:42:52,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:42:52,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:42:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:42:53,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 04:42:53,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:42:53,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084510170] [2021-11-04 04:42:53,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084510170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:42:53,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:42:53,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:42:53,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140483293] [2021-11-04 04:42:53,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:42:53,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:42:53,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:42:53,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:42:53,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:42:53,155 INFO L87 Difference]: Start difference. First operand 18546 states and 26032 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:42:55,556 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:44:21,543 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:44:50,329 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:46:06,895 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:46:22,558 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:46:52,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:46:52,051 INFO L93 Difference]: Finished difference Result 55340 states and 77728 transitions. [2021-11-04 04:46:52,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:46:52,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 75 [2021-11-04 04:46:52,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:46:52,195 INFO L225 Difference]: With dead ends: 55340 [2021-11-04 04:46:52,196 INFO L226 Difference]: Without dead ends: 36863 [2021-11-04 04:46:52,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.56ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:46:52,277 INFO L933 BasicCegarLoop]: 442 mSDtfsCounter, 13380 mSDsluCounter, 13590 mSDsCounter, 0 mSdLazyCounter, 28051 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 221206.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13383 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 28057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 178.73ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28051 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 236203.44ms IncrementalHoareTripleChecker+Time [2021-11-04 04:46:52,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13383 Valid, 730 Invalid, 28057 Unknown, 0 Unchecked, 178.73ms Time], IncrementalHoareTripleChecker [1 Valid, 28051 Invalid, 5 Unknown, 0 Unchecked, 236203.44ms Time] [2021-11-04 04:46:52,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36863 states. [2021-11-04 04:46:53,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36863 to 36477. [2021-11-04 04:46:53,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36477 states, 35792 states have (on average 1.3898077782744747) internal successors, (49744), 35833 states have internal predecessors, (49744), 540 states have call successors, (540), 148 states have call predecessors, (540), 142 states have return successors, (1058), 521 states have call predecessors, (1058), 540 states have call successors, (1058) [2021-11-04 04:46:53,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36477 states to 36477 states and 51342 transitions. [2021-11-04 04:46:53,206 INFO L78 Accepts]: Start accepts. Automaton has 36477 states and 51342 transitions. Word has length 75 [2021-11-04 04:46:53,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:46:53,212 INFO L470 AbstractCegarLoop]: Abstraction has 36477 states and 51342 transitions. [2021-11-04 04:46:53,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:46:53,212 INFO L276 IsEmpty]: Start isEmpty. Operand 36477 states and 51342 transitions. [2021-11-04 04:46:53,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-04 04:46:53,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:46:53,228 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] [2021-11-04 04:46:53,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 04:46:53,229 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] === [2021-11-04 04:46:53,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:46:53,229 INFO L85 PathProgramCache]: Analyzing trace with hash -358170467, now seen corresponding path program 1 times [2021-11-04 04:46:53,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:46:53,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512834764] [2021-11-04 04:46:53,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:46:53,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:46:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:46:54,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 04:46:54,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:46:54,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512834764] [2021-11-04 04:46:54,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512834764] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:46:54,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:46:54,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:46:54,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425541790] [2021-11-04 04:46:54,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:46:54,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:46:54,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:46:54,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:46:54,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:46:54,261 INFO L87 Difference]: Start difference. First operand 36477 states and 51342 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:46:56,972 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15