./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 173e3943 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-173e394 [2021-11-06 14:49:20,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 14:49:20,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 14:49:20,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 14:49:20,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 14:49:20,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 14:49:20,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 14:49:20,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 14:49:20,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 14:49:20,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 14:49:20,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 14:49:20,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 14:49:20,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 14:49:20,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 14:49:20,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 14:49:20,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 14:49:20,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 14:49:20,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 14:49:20,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 14:49:20,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 14:49:20,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 14:49:20,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 14:49:20,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 14:49:20,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 14:49:20,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 14:49:20,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 14:49:20,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 14:49:20,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 14:49:20,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 14:49:20,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 14:49:20,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 14:49:20,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 14:49:20,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 14:49:20,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 14:49:20,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 14:49:20,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 14:49:20,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 14:49:20,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 14:49:20,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 14:49:20,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 14:49:20,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 14:49:20,240 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 14:49:20,264 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 14:49:20,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 14:49:20,265 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 14:49:20,265 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 14:49:20,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 14:49:20,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 14:49:20,267 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 14:49:20,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 14:49:20,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 14:49:20,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 14:49:20,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 14:49:20,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 14:49:20,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 14:49:20,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 14:49:20,269 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 14:49:20,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 14:49:20,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 14:49:20,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 14:49:20,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 14:49:20,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:49:20,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 14:49:20,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 14:49:20,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 14:49:20,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 14:49:20,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 14:49:20,271 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 14:49:20,271 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 14:49:20,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 14:49:20,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 14:49:20,272 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 046f5371192e04edfcb404c42cbf904dba4f5de1b9feb443275d06b623bd9ae5 [2021-11-06 14:49:20,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 14:49:20,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 14:49:20,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 14:49:20,520 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 14:49:20,521 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 14:49:20,521 INFO L432 ainManager$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 [2021-11-06 14:49:20,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6308e8a47/065be215bdca4fe98a005f2bf8519c6d/FLAGe97afd3b9 [2021-11-06 14:49:21,482 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 14:49:21,483 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 [2021-11-06 14:49:21,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6308e8a47/065be215bdca4fe98a005f2bf8519c6d/FLAGe97afd3b9 [2021-11-06 14:49:21,596 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6308e8a47/065be215bdca4fe98a005f2bf8519c6d [2021-11-06 14:49:21,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 14:49:21,600 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 14:49:21,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 14:49:21,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 14:49:21,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 14:49:21,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:49:21" (1/1) ... [2021-11-06 14:49:21,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49da4f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:21, skipping insertion in model container [2021-11-06 14:49:21,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:49:21" (1/1) ... [2021-11-06 14:49:21,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 14:49:21,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 14:49:22,357 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6674] [2021-11-06 14:49:22,357 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] [2021-11-06 14:49:23,070 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] [2021-11-06 14:49:28,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:49:28,599 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 14:49:28,742 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6674] [2021-11-06 14:49:28,742 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] [2021-11-06 14:49:28,761 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] [2021-11-06 14:49:29,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:49:29,595 INFO L208 MainTranslator]: Completed translation [2021-11-06 14:49:29,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:29 WrapperNode [2021-11-06 14:49:29,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 14:49:29,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 14:49:29,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 14:49:29,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 14:49:29,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:29" (1/1) ... [2021-11-06 14:49:29,821 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:29" (1/1) ... [2021-11-06 14:49:31,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 14:49:31,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 14:49:31,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 14:49:31,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 14:49:31,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:29" (1/1) ... [2021-11-06 14:49:31,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:29" (1/1) ... [2021-11-06 14:49:31,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:29" (1/1) ... [2021-11-06 14:49:31,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:29" (1/1) ... [2021-11-06 14:49:33,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:29" (1/1) ... [2021-11-06 14:49:33,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:29" (1/1) ... [2021-11-06 14:49:33,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:29" (1/1) ... [2021-11-06 14:49:33,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 14:49:33,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 14:49:33,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 14:49:33,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 14:49:33,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:29" (1/1) ... [2021-11-06 14:49:33,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:49:33,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:49:33,920 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) [2021-11-06 14:49:33,946 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 [2021-11-06 14:49:33,967 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_clean_desc3___0 [2021-11-06 14:49:33,967 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_clean_desc3___0 [2021-11-06 14:49:33,968 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_probe [2021-11-06 14:49:33,968 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_probe [2021-11-06 14:49:33,968 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_poll_controller [2021-11-06 14:49:33,968 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_poll_controller [2021-11-06 14:49:33,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-06 14:49:33,968 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_suspend [2021-11-06 14:49:33,969 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_suspend [2021-11-06 14:49:33,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 14:49:33,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 14:49:33,969 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_tx_skbufs [2021-11-06 14:49:33,969 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_tx_skbufs [2021-11-06 14:49:33,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 14:49:33,969 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 14:49:33,969 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_suspend [2021-11-06 14:49:33,970 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_suspend [2021-11-06 14:49:33,970 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_interrupt [2021-11-06 14:49:33,970 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_interrupt [2021-11-06 14:49:33,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 14:49:33,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:49:33,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 14:49:33,970 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-06 14:49:33,971 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_get_ethtool_stats [2021-11-06 14:49:33,971 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_get_ethtool_stats [2021-11-06 14:49:33,971 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_init_rx_buffers [2021-11-06 14:49:33,971 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_init_rx_buffers [2021-11-06 14:49:33,971 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_hw_setup [2021-11-06 14:49:33,971 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_hw_setup [2021-11-06 14:49:33,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 14:49:33,972 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-06 14:49:33,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-06 14:49:33,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 14:49:33,972 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_release [2021-11-06 14:49:33,972 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_release [2021-11-06 14:49:33,972 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_tx_timeout [2021-11-06 14:49:33,973 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_tx_timeout [2021-11-06 14:49:33,973 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_hw_init [2021-11-06 14:49:33,973 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_hw_init [2021-11-06 14:49:33,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 14:49:33,973 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_disable_eee_mode [2021-11-06 14:49:33,973 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_disable_eee_mode [2021-11-06 14:49:33,974 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_remove [2021-11-06 14:49:33,974 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_remove [2021-11-06 14:49:33,974 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_remove [2021-11-06 14:49:33,974 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_remove [2021-11-06 14:49:33,974 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dma_interrupt [2021-11-06 14:49:33,975 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dma_interrupt [2021-11-06 14:49:33,975 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_resume [2021-11-06 14:49:33,975 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_resume [2021-11-06 14:49:33,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 14:49:33,975 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_open [2021-11-06 14:49:33,975 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_open [2021-11-06 14:49:33,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 14:49:33,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 14:49:33,976 INFO L130 BoogieDeclarations]: Found specification of procedure init_dma_desc_rings [2021-11-06 14:49:33,977 INFO L138 BoogieDeclarations]: Found implementation of procedure init_dma_desc_rings [2021-11-06 14:49:33,977 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_get_hw_features [2021-11-06 14:49:33,977 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_get_hw_features [2021-11-06 14:49:33,978 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_probe [2021-11-06 14:49:33,978 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_probe [2021-11-06 14:49:33,978 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dvr_probe [2021-11-06 14:49:33,978 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dvr_probe [2021-11-06 14:49:33,978 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_resume [2021-11-06 14:49:33,978 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_resume [2021-11-06 14:49:33,978 INFO L130 BoogieDeclarations]: Found specification of procedure free_dma_desc_resources [2021-11-06 14:49:33,979 INFO L138 BoogieDeclarations]: Found implementation of procedure free_dma_desc_resources [2021-11-06 14:49:33,979 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_mdio_reset [2021-11-06 14:49:33,979 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_mdio_reset [2021-11-06 14:49:33,979 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 14:49:33,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 14:49:33,979 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_ethtool_op_set_eee [2021-11-06 14:49:33,979 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_ethtool_op_set_eee [2021-11-06 14:49:33,980 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-06 14:49:33,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-06 14:49:33,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 14:49:33,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 14:49:33,980 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_disable_dma_irq [2021-11-06 14:49:33,980 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_disable_dma_irq [2021-11-06 14:49:33,980 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dvr_remove [2021-11-06 14:49:33,981 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dvr_remove [2021-11-06 14:49:33,981 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_tx_err [2021-11-06 14:49:33,981 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_tx_err [2021-11-06 14:49:33,981 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_ethtool_getsettings [2021-11-06 14:49:33,981 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_ethtool_getsettings [2021-11-06 14:49:33,981 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 14:49:33,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 14:49:33,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 14:49:33,982 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-06 14:49:33,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-06 14:49:33,982 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_resume [2021-11-06 14:49:33,982 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_resume [2021-11-06 14:51:08,404 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:51:08,404 INFO L299 CfgBuilder]: Removed 10186 assume(true) statements. [2021-11-06 14:51:08,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:51:08 BoogieIcfgContainer [2021-11-06 14:51:08,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:51:08,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:51:08,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:51:08,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:51:08,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:49:21" (1/3) ... [2021-11-06 14:51:08,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@adb47d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:51:08, skipping insertion in model container [2021-11-06 14:51:08,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:29" (2/3) ... [2021-11-06 14:51:08,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@adb47d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:51:08, skipping insertion in model container [2021-11-06 14:51:08,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:51:08" (3/3) ... [2021-11-06 14:51:08,423 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 [2021-11-06 14:51:08,428 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:51:08,428 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-06 14:51:08,494 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:51:08,504 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 [2021-11-06 14:51:08,504 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-06 14:51:08,637 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) [2021-11-06 14:51:08,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 14:51:08,687 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:51:08,688 INFO L513 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] [2021-11-06 14:51:08,688 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] === [2021-11-06 14:51:08,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:51:08,694 INFO L85 PathProgramCache]: Analyzing trace with hash -942835593, now seen corresponding path program 1 times [2021-11-06 14:51:08,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:51:08,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873199700] [2021-11-06 14:51:08,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:51:08,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:51:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:51:10,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:51:10,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:51:10,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873199700] [2021-11-06 14:51:10,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873199700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:51:10,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:51:10,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:51:10,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141487597] [2021-11-06 14:51:10,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:51:10,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:51:10,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:51:10,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:51:10,420 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) [2021-11-06 14:51:11,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:51:11,952 INFO L93 Difference]: Finished difference Result 28792 states and 41553 transitions. [2021-11-06 14:51:11,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:51:11,954 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 [2021-11-06 14:51:11,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:51:12,071 INFO L225 Difference]: With dead ends: 28792 [2021-11-06 14:51:12,072 INFO L226 Difference]: Without dead ends: 18789 [2021-11-06 14:51:12,135 INFO L786 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 [2021-11-06 14:51:12,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18789 states. [2021-11-06 14:51:12,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18789 to 18545. [2021-11-06 14:51:12,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18545 states, 18196 states have (on average 1.3870081336557485) internal successors, (25238), 18217 states have internal predecessors, (25238), 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) [2021-11-06 14:51:12,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18545 states to 18545 states and 26045 transitions. [2021-11-06 14:51:12,870 INFO L78 Accepts]: Start accepts. Automaton has 18545 states and 26045 transitions. Word has length 73 [2021-11-06 14:51:12,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:51:12,871 INFO L470 AbstractCegarLoop]: Abstraction has 18545 states and 26045 transitions. [2021-11-06 14:51:12,872 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) [2021-11-06 14:51:12,872 INFO L276 IsEmpty]: Start isEmpty. Operand 18545 states and 26045 transitions. [2021-11-06 14:51:12,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 14:51:12,891 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:51:12,891 INFO L513 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] [2021-11-06 14:51:12,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:51:12,892 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] === [2021-11-06 14:51:12,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:51:12,894 INFO L85 PathProgramCache]: Analyzing trace with hash 251992919, now seen corresponding path program 1 times [2021-11-06 14:51:12,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:51:12,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572348029] [2021-11-06 14:51:12,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:51:12,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:51:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:51:13,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:51:13,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:51:13,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572348029] [2021-11-06 14:51:13,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572348029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:51:13,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:51:13,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:51:13,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100733037] [2021-11-06 14:51:13,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:51:13,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:51:13,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:51:13,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:51:13,992 INFO L87 Difference]: Start difference. First operand 18545 states and 26045 transitions. 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, (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) [2021-11-06 14:51:15,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:51:15,178 INFO L93 Difference]: Finished difference Result 55397 states and 77835 transitions. [2021-11-06 14:51:15,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:51:15,179 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, (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 74 [2021-11-06 14:51:15,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:51:15,405 INFO L225 Difference]: With dead ends: 55397 [2021-11-06 14:51:15,406 INFO L226 Difference]: Without dead ends: 36920 [2021-11-06 14:51:15,496 INFO L786 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 [2021-11-06 14:51:15,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36920 states. [2021-11-06 14:51:16,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36920 to 36552. [2021-11-06 14:51:16,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36552 states, 35867 states have (on average 1.3904982295703572) internal successors, (49873), 35905 states have internal predecessors, (49873), 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) [2021-11-06 14:51:16,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36552 states to 36552 states and 51461 transitions. [2021-11-06 14:51:16,580 INFO L78 Accepts]: Start accepts. Automaton has 36552 states and 51461 transitions. Word has length 74 [2021-11-06 14:51:16,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:51:16,580 INFO L470 AbstractCegarLoop]: Abstraction has 36552 states and 51461 transitions. [2021-11-06 14:51:16,580 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, (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) [2021-11-06 14:51:16,581 INFO L276 IsEmpty]: Start isEmpty. Operand 36552 states and 51461 transitions. [2021-11-06 14:51:16,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-06 14:51:16,599 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:51:16,599 INFO L513 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] [2021-11-06 14:51:16,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:51:16,600 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] === [2021-11-06 14:51:16,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:51:16,600 INFO L85 PathProgramCache]: Analyzing trace with hash 35357056, now seen corresponding path program 1 times [2021-11-06 14:51:16,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:51:16,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133677219] [2021-11-06 14:51:16,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:51:16,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:51:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:51:17,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:51:17,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:51:17,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133677219] [2021-11-06 14:51:17,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133677219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:51:17,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:51:17,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:51:17,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711797186] [2021-11-06 14:51:17,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:51:17,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:51:17,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:51:17,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:51:17,776 INFO L87 Difference]: Start difference. First operand 36552 states and 51461 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-11-06 14:51:19,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:51:19,870 INFO L93 Difference]: Finished difference Result 108998 states and 153407 transitions. [2021-11-06 14:51:19,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:51:19,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 80 [2021-11-06 14:51:19,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:51:20,232 INFO L225 Difference]: With dead ends: 108998 [2021-11-06 14:51:20,232 INFO L226 Difference]: Without dead ends: 72514 [2021-11-06 14:51:20,393 INFO L786 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 [2021-11-06 14:51:20,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72514 states. [2021-11-06 14:51:22,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72514 to 72300. [2021-11-06 14:51:22,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72300 states, 70957 states have (on average 1.3907155037557957) internal successors, (98681), 71031 states have internal predecessors, (98681), 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) [2021-11-06 14:51:22,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72300 states to 72300 states and 101785 transitions. [2021-11-06 14:51:22,766 INFO L78 Accepts]: Start accepts. Automaton has 72300 states and 101785 transitions. Word has length 80 [2021-11-06 14:51:22,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:51:22,768 INFO L470 AbstractCegarLoop]: Abstraction has 72300 states and 101785 transitions. [2021-11-06 14:51:22,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-11-06 14:51:22,772 INFO L276 IsEmpty]: Start isEmpty. Operand 72300 states and 101785 transitions. [2021-11-06 14:51:22,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-06 14:51:22,791 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:51:22,791 INFO L513 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] [2021-11-06 14:51:22,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:51:22,792 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] === [2021-11-06 14:51:22,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:51:22,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1017034170, now seen corresponding path program 1 times [2021-11-06 14:51:22,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:51:22,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932674893] [2021-11-06 14:51:22,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:51:22,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:51:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:51:23,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:51:23,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:51:23,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932674893] [2021-11-06 14:51:23,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932674893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:51:23,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:51:23,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:51:23,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305683206] [2021-11-06 14:51:23,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:51:23,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:51:23,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:51:23,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:51:23,958 INFO L87 Difference]: Start difference. First operand 72300 states and 101785 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2021-11-06 14:51:27,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:51:27,123 INFO L93 Difference]: Finished difference Result 213630 states and 300869 transitions. [2021-11-06 14:51:27,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:51:27,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 92 [2021-11-06 14:51:27,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:51:28,031 INFO L225 Difference]: With dead ends: 213630 [2021-11-06 14:51:28,047 INFO L226 Difference]: Without dead ends: 141398 [2021-11-06 14:51:28,292 INFO L786 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 [2021-11-06 14:51:28,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141398 states. [2021-11-06 14:51:31,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141398 to 141088. [2021-11-06 14:51:31,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141088 states, 138477 states have (on average 1.3924406219083314) internal successors, (192821), 138623 states have internal predecessors, (192821), 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) [2021-11-06 14:51:32,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141088 states to 141088 states and 198813 transitions. [2021-11-06 14:51:32,556 INFO L78 Accepts]: Start accepts. Automaton has 141088 states and 198813 transitions. Word has length 92 [2021-11-06 14:51:32,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:51:32,557 INFO L470 AbstractCegarLoop]: Abstraction has 141088 states and 198813 transitions. [2021-11-06 14:51:32,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2021-11-06 14:51:32,558 INFO L276 IsEmpty]: Start isEmpty. Operand 141088 states and 198813 transitions. [2021-11-06 14:51:32,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-06 14:51:32,577 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:51:32,577 INFO L513 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] [2021-11-06 14:51:32,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 14:51:32,577 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] === [2021-11-06 14:51:32,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:51:32,578 INFO L85 PathProgramCache]: Analyzing trace with hash -976534326, now seen corresponding path program 1 times [2021-11-06 14:51:32,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:51:32,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018447400] [2021-11-06 14:51:32,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:51:32,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:51:33,000 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 14:51:33,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1146422767] [2021-11-06 14:51:33,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:51:33,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:51:33,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:51:33,003 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) [2021-11-06 14:51:33,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 14:51:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:51:38,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 18821 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 14:51:39,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:51:39,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:51:39,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:51:39,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018447400] [2021-11-06 14:51:39,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 14:51:39,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146422767] [2021-11-06 14:51:39,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146422767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:51:39,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:51:39,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:51:39,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291556752] [2021-11-06 14:51:39,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:51:39,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:51:39,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:51:39,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:51:39,266 INFO L87 Difference]: Start difference. First operand 141088 states and 198813 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-11-06 14:51:42,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:51:42,216 INFO L93 Difference]: Finished difference Result 282156 states and 401534 transitions. [2021-11-06 14:51:42,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:51:42,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) Word has length 95 [2021-11-06 14:51:42,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:51:43,422 INFO L225 Difference]: With dead ends: 282156 [2021-11-06 14:51:43,423 INFO L226 Difference]: Without dead ends: 141136