./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c25ee40b84da0e037e1d80db414ed17491ea7807f66e1b888adc8df58baa009c --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 19:59:10,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 19:59:10,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 19:59:10,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 19:59:10,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 19:59:10,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 19:59:10,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 19:59:10,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 19:59:10,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 19:59:10,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 19:59:10,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 19:59:10,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 19:59:10,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 19:59:10,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 19:59:10,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 19:59:10,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 19:59:10,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 19:59:10,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 19:59:10,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 19:59:10,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 19:59:10,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 19:59:10,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 19:59:10,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 19:59:10,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 19:59:10,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 19:59:10,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 19:59:10,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 19:59:10,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 19:59:10,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 19:59:10,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 19:59:10,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 19:59:10,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 19:59:10,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 19:59:10,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 19:59:10,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 19:59:10,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 19:59:10,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 19:59:10,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 19:59:10,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 19:59:10,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 19:59:10,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 19:59:10,310 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 19:59:10,336 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 19:59:10,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 19:59:10,337 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 19:59:10,337 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 19:59:10,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 19:59:10,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 19:59:10,339 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 19:59:10,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 19:59:10,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 19:59:10,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 19:59:10,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 19:59:10,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 19:59:10,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 19:59:10,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 19:59:10,341 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 19:59:10,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 19:59:10,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 19:59:10,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 19:59:10,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 19:59:10,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:59:10,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 19:59:10,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 19:59:10,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 19:59:10,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 19:59:10,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 19:59:10,342 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 19:59:10,342 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 19:59:10,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 19:59:10,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 19:59:10,343 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c25ee40b84da0e037e1d80db414ed17491ea7807f66e1b888adc8df58baa009c [2021-11-05 19:59:10,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 19:59:10,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 19:59:10,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 19:59:10,613 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 19:59:10,614 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 19:59:10,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i [2021-11-05 19:59:10,673 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00a27a64e/7d3103b7d6604468883fd59151dafa79/FLAG37071e307 [2021-11-05 19:59:11,387 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 19:59:11,388 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i [2021-11-05 19:59:11,453 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00a27a64e/7d3103b7d6604468883fd59151dafa79/FLAG37071e307 [2021-11-05 19:59:11,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00a27a64e/7d3103b7d6604468883fd59151dafa79 [2021-11-05 19:59:11,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 19:59:11,906 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 19:59:11,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 19:59:11,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 19:59:11,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 19:59:11,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:59:11" (1/1) ... [2021-11-05 19:59:11,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e02044b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:59:11, skipping insertion in model container [2021-11-05 19:59:11,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:59:11" (1/1) ... [2021-11-05 19:59:11,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 19:59:12,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 19:59:21,548 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i[887989,888002] [2021-11-05 19:59:21,551 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i[888134,888147] [2021-11-05 19:59:21,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:59:21,743 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 19:59:22,268 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i[887989,888002] [2021-11-05 19:59:22,269 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i[888134,888147] [2021-11-05 19:59:22,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:59:22,797 INFO L208 MainTranslator]: Completed translation [2021-11-05 19:59:22,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:59:22 WrapperNode [2021-11-05 19:59:22,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 19:59:22,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 19:59:22,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 19:59:22,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 19:59:22,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:59:22" (1/1) ... [2021-11-05 19:59:22,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:59:22" (1/1) ... [2021-11-05 19:59:23,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 19:59:23,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 19:59:23,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 19:59:23,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 19:59:24,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:59:22" (1/1) ... [2021-11-05 19:59:24,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:59:22" (1/1) ... [2021-11-05 19:59:24,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:59:22" (1/1) ... [2021-11-05 19:59:24,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:59:22" (1/1) ... [2021-11-05 19:59:25,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:59:22" (1/1) ... [2021-11-05 19:59:25,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:59:22" (1/1) ... [2021-11-05 19:59:25,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:59:22" (1/1) ... [2021-11-05 19:59:26,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 19:59:26,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 19:59:26,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 19:59:26,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 19:59:26,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:59:22" (1/1) ... [2021-11-05 19:59:26,195 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:59:26,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:59:26,236 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) [2021-11-05 19:59:26,257 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 [2021-11-05 19:59:26,264 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_clean_desc3___0 [2021-11-05 19:59:26,264 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_clean_desc3___0 [2021-11-05 19:59:26,265 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_probe [2021-11-05 19:59:26,265 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_probe [2021-11-05 19:59:26,265 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_poll_controller [2021-11-05 19:59:26,265 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_poll_controller [2021-11-05 19:59:26,265 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_suspend [2021-11-05 19:59:26,265 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_suspend [2021-11-05 19:59:26,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 19:59:26,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 19:59:26,266 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_tx_skbufs [2021-11-05 19:59:26,266 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_tx_skbufs [2021-11-05 19:59:26,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 19:59:26,266 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 19:59:26,266 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_suspend [2021-11-05 19:59:26,266 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_suspend [2021-11-05 19:59:26,266 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_interrupt [2021-11-05 19:59:26,266 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_interrupt [2021-11-05 19:59:26,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 19:59:26,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 19:59:26,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 19:59:26,267 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-05 19:59:26,267 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_get_ethtool_stats [2021-11-05 19:59:26,267 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_get_ethtool_stats [2021-11-05 19:59:26,267 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_init_rx_buffers [2021-11-05 19:59:26,267 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_init_rx_buffers [2021-11-05 19:59:26,267 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_hw_setup [2021-11-05 19:59:26,267 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_hw_setup [2021-11-05 19:59:26,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 19:59:26,268 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-05 19:59:26,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-05 19:59:26,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 19:59:26,268 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_release [2021-11-05 19:59:26,268 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_release [2021-11-05 19:59:26,268 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_tx_timeout [2021-11-05 19:59:26,268 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_tx_timeout [2021-11-05 19:59:26,268 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_hw_init [2021-11-05 19:59:26,269 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_hw_init [2021-11-05 19:59:26,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 19:59:26,269 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_disable_eee_mode [2021-11-05 19:59:26,269 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_disable_eee_mode [2021-11-05 19:59:26,269 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_remove [2021-11-05 19:59:26,269 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_remove [2021-11-05 19:59:26,269 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_remove [2021-11-05 19:59:26,269 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_remove [2021-11-05 19:59:26,269 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dma_interrupt [2021-11-05 19:59:26,270 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dma_interrupt [2021-11-05 19:59:26,270 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_resume [2021-11-05 19:59:26,270 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_resume [2021-11-05 19:59:26,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 19:59:26,270 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_open [2021-11-05 19:59:26,270 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_open [2021-11-05 19:59:26,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 19:59:26,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 19:59:26,270 INFO L130 BoogieDeclarations]: Found specification of procedure init_dma_desc_rings [2021-11-05 19:59:26,271 INFO L138 BoogieDeclarations]: Found implementation of procedure init_dma_desc_rings [2021-11-05 19:59:26,271 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_get_hw_features [2021-11-05 19:59:26,271 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_get_hw_features [2021-11-05 19:59:26,271 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_probe [2021-11-05 19:59:26,271 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_probe [2021-11-05 19:59:26,271 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dvr_probe [2021-11-05 19:59:26,271 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dvr_probe [2021-11-05 19:59:26,271 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_resume [2021-11-05 19:59:26,272 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_resume [2021-11-05 19:59:26,272 INFO L130 BoogieDeclarations]: Found specification of procedure free_dma_desc_resources [2021-11-05 19:59:26,272 INFO L138 BoogieDeclarations]: Found implementation of procedure free_dma_desc_resources [2021-11-05 19:59:26,272 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_mdio_reset [2021-11-05 19:59:26,272 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_mdio_reset [2021-11-05 19:59:26,272 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 19:59:26,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 19:59:26,272 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_ethtool_op_set_eee [2021-11-05 19:59:26,272 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_ethtool_op_set_eee [2021-11-05 19:59:26,273 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-05 19:59:26,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-05 19:59:26,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 19:59:26,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 19:59:26,273 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_disable_dma_irq [2021-11-05 19:59:26,273 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_disable_dma_irq [2021-11-05 19:59:26,273 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dvr_remove [2021-11-05 19:59:26,273 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dvr_remove [2021-11-05 19:59:26,273 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_tx_err [2021-11-05 19:59:26,274 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_tx_err [2021-11-05 19:59:26,274 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_ethtool_getsettings [2021-11-05 19:59:26,274 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_ethtool_getsettings [2021-11-05 19:59:26,274 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-05 19:59:26,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-05 19:59:26,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 19:59:26,274 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-05 19:59:26,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-05 19:59:26,274 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_resume [2021-11-05 19:59:26,274 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_resume [2021-11-05 20:01:34,926 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_6_switch_break: ldv_switch_6_#res := 0; [2021-11-05 20:01:34,927 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-05 20:01:34,927 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-05 20:01:34,927 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-05 20:01:34,927 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-05 20:01:34,927 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_6_switch_break#4: ldv_switch_6_#res := 0; [2021-11-05 20:01:34,928 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_6_switch_break#3: ldv_switch_6_#res := 0; [2021-11-05 20:01:34,928 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_6_switch_break#2: ldv_switch_6_#res := 0; [2021-11-05 20:01:34,928 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_5_switch_break#2: ldv_switch_5_#res := 0; [2021-11-05 20:01:34,928 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#2: ldv_switch_4_#res := 0; [2021-11-05 20:01:34,929 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#3: ldv_switch_4_#res := 0; [2021-11-05 20:01:34,929 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_5_switch_break: ldv_switch_5_#res := 0; [2021-11-05 20:01:34,929 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_8_switch_break#2: ldv_switch_8_#res := 0; [2021-11-05 20:01:34,929 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-05 20:01:34,929 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-05 20:01:34,929 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-05 20:01:34,929 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#2: ldv_switch_3_#res := 0; [2021-11-05 20:01:34,930 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-05 20:01:34,930 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break: ldv_switch_4_#res := 0; [2021-11-05 20:01:34,930 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_7_switch_break: ldv_switch_7_#res := 0; [2021-11-05 20:01:34,931 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-05 20:01:34,931 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_9_switch_break: ldv_switch_9_#res := 0; [2021-11-05 20:01:34,932 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_8_switch_break: ldv_switch_8_#res := 0; [2021-11-05 20:01:34,932 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-05 20:01:34,932 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-05 20:01:35,037 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 20:01:35,037 INFO L299 CfgBuilder]: Removed 11199 assume(true) statements. [2021-11-05 20:01:35,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 08:01:35 BoogieIcfgContainer [2021-11-05 20:01:35,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 20:01:35,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 20:01:35,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 20:01:35,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 20:01:35,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 07:59:11" (1/3) ... [2021-11-05 20:01:35,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d60e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 08:01:35, skipping insertion in model container [2021-11-05 20:01:35,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:59:22" (2/3) ... [2021-11-05 20:01:35,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d60e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 08:01:35, skipping insertion in model container [2021-11-05 20:01:35,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 08:01:35" (3/3) ... [2021-11-05 20:01:35,051 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i [2021-11-05 20:01:35,055 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 20:01:35,055 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-05 20:01:35,107 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 20:01:35,111 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 [2021-11-05 20:01:35,112 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-05 20:01:35,214 INFO L276 IsEmpty]: Start isEmpty. Operand has 11419 states, 11241 states have (on average 1.3872431278356019) internal successors, (15594), 11256 states have internal predecessors, (15594), 134 states have call successors, (134), 37 states have call predecessors, (134), 37 states have return successors, (134), 132 states have call predecessors, (134), 134 states have call successors, (134) [2021-11-05 20:01:35,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-11-05 20:01:35,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:01:35,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:01:35,266 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting stmmac_init_rx_buffersErr0ASSERT_VIOLATIONERROR_FUNCTION === [stmmac_openErr0ASSERT_VIOLATIONERROR_FUNCTION, stmmac_openErr1ASSERT_VIOLATIONERROR_FUNCTION, stmmac_openErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 20:01:35,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:01:35,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1684659612, now seen corresponding path program 1 times [2021-11-05 20:01:35,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:01:35,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647302921] [2021-11-05 20:01:35,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:01:35,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:01:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:01:37,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:01:37,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:01:37,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647302921] [2021-11-05 20:01:37,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647302921] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:01:37,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:01:37,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:01:37,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240411501] [2021-11-05 20:01:37,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:01:37,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:01:37,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:01:37,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:01:37,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:01:37,171 INFO L87 Difference]: Start difference. First operand has 11419 states, 11241 states have (on average 1.3872431278356019) internal successors, (15594), 11256 states have internal predecessors, (15594), 134 states have call successors, (134), 37 states have call predecessors, (134), 37 states have return successors, (134), 132 states have call predecessors, (134), 134 states have call successors, (134) Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:01:39,551 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:01:40,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:01:40,601 INFO L93 Difference]: Finished difference Result 32475 states and 45517 transitions. [2021-11-05 20:01:40,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:01:40,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 314 [2021-11-05 20:01:40,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:01:40,724 INFO L225 Difference]: With dead ends: 32475 [2021-11-05 20:01:40,725 INFO L226 Difference]: Without dead ends: 21014 [2021-11-05 20:01:40,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.10ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:01:40,793 INFO L933 BasicCegarLoop]: 16210 mSDtfsCounter, 14547 mSDsluCounter, 15731 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2438.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14547 SdHoareTripleChecker+Valid, 31941 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.79ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2600.62ms IncrementalHoareTripleChecker+Time [2021-11-05 20:01:40,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14547 Valid, 31941 Invalid, 90 Unknown, 0 Unchecked, 59.79ms Time], IncrementalHoareTripleChecker [19 Valid, 70 Invalid, 1 Unknown, 0 Unchecked, 2600.62ms Time] [2021-11-05 20:01:40,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21014 states. [2021-11-05 20:01:41,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21014 to 20994. [2021-11-05 20:01:41,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20994 states, 20651 states have (on average 1.3673914096169677) internal successors, (28238), 20675 states have internal predecessors, (28238), 262 states have call successors, (262), 74 states have call predecessors, (262), 74 states have return successors, (262), 258 states have call predecessors, (262), 262 states have call successors, (262) [2021-11-05 20:01:41,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20994 states to 20994 states and 28762 transitions. [2021-11-05 20:01:41,393 INFO L78 Accepts]: Start accepts. Automaton has 20994 states and 28762 transitions. Word has length 314 [2021-11-05 20:01:41,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:01:41,394 INFO L470 AbstractCegarLoop]: Abstraction has 20994 states and 28762 transitions. [2021-11-05 20:01:41,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:01:41,395 INFO L276 IsEmpty]: Start isEmpty. Operand 20994 states and 28762 transitions. [2021-11-05 20:01:41,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-05 20:01:41,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:01:41,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:01:41,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 20:01:41,513 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting stmmac_init_rx_buffersErr0ASSERT_VIOLATIONERROR_FUNCTION === [stmmac_openErr0ASSERT_VIOLATIONERROR_FUNCTION, stmmac_openErr1ASSERT_VIOLATIONERROR_FUNCTION, stmmac_openErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 20:01:41,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:01:41,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1370892393, now seen corresponding path program 1 times [2021-11-05 20:01:41,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:01:41,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997423696] [2021-11-05 20:01:41,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:01:41,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:01:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:01:42,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:01:42,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:01:42,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997423696] [2021-11-05 20:01:42,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997423696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:01:42,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:01:42,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:01:42,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792097895] [2021-11-05 20:01:42,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:01:42,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:01:42,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:01:42,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:01:42,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:01:42,789 INFO L87 Difference]: Start difference. First operand 20994 states and 28762 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:01:45,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:01:46,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:01:46,135 INFO L93 Difference]: Finished difference Result 61324 states and 84354 transitions. [2021-11-05 20:01:46,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:01:46,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 315 [2021-11-05 20:01:46,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:01:46,323 INFO L225 Difference]: With dead ends: 61324 [2021-11-05 20:01:46,324 INFO L226 Difference]: Without dead ends: 40974 [2021-11-05 20:01:46,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.48ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:01:46,402 INFO L933 BasicCegarLoop]: 14922 mSDtfsCounter, 13813 mSDsluCounter, 14731 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2427.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13813 SdHoareTripleChecker+Valid, 29653 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 122.99ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2561.49ms IncrementalHoareTripleChecker+Time [2021-11-05 20:01:46,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13813 Valid, 29653 Invalid, 153 Unknown, 0 Unchecked, 122.99ms Time], IncrementalHoareTripleChecker [31 Valid, 121 Invalid, 1 Unknown, 0 Unchecked, 2561.49ms Time] [2021-11-05 20:01:46,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40974 states. [2021-11-05 20:01:47,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40974 to 40948. [2021-11-05 20:01:47,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40948 states, 40315 states have (on average 1.371276199925586) internal successors, (55283), 40357 states have internal predecessors, (55283), 478 states have call successors, (478), 148 states have call predecessors, (478), 148 states have return successors, (478), 470 states have call predecessors, (478), 478 states have call successors, (478) [2021-11-05 20:01:47,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40948 states to 40948 states and 56239 transitions. [2021-11-05 20:01:47,491 INFO L78 Accepts]: Start accepts. Automaton has 40948 states and 56239 transitions. Word has length 315 [2021-11-05 20:01:47,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:01:47,493 INFO L470 AbstractCegarLoop]: Abstraction has 40948 states and 56239 transitions. [2021-11-05 20:01:47,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:01:47,493 INFO L276 IsEmpty]: Start isEmpty. Operand 40948 states and 56239 transitions. [2021-11-05 20:01:47,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-11-05 20:01:47,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:01:47,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:01:47,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 20:01:47,554 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting stmmac_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [stmmac_openErr0ASSERT_VIOLATIONERROR_FUNCTION, stmmac_openErr1ASSERT_VIOLATIONERROR_FUNCTION, stmmac_openErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 20:01:47,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:01:47,555 INFO L85 PathProgramCache]: Analyzing trace with hash 186120549, now seen corresponding path program 1 times [2021-11-05 20:01:47,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:01:47,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335090095] [2021-11-05 20:01:47,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:01:47,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:01:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:01:49,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:01:49,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:01:49,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335090095] [2021-11-05 20:01:49,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335090095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:01:49,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:01:49,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:01:49,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005997950] [2021-11-05 20:01:49,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:01:49,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:01:49,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:01:49,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:01:49,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:01:49,178 INFO L87 Difference]: Start difference. First operand 40948 states and 56239 transitions. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:01:51,572 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:01:52,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:01:52,989 INFO L93 Difference]: Finished difference Result 121176 states and 166765 transitions. [2021-11-05 20:01:52,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:01:52,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 316 [2021-11-05 20:01:52,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:01:53,396 INFO L225 Difference]: With dead ends: 121176 [2021-11-05 20:01:53,397 INFO L226 Difference]: Without dead ends: 80872 [2021-11-05 20:01:53,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.86ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:01:53,566 INFO L933 BasicCegarLoop]: 14940 mSDtfsCounter, 13943 mSDsluCounter, 14772 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2431.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13943 SdHoareTripleChecker+Valid, 29712 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.35ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2552.29ms IncrementalHoareTripleChecker+Time [2021-11-05 20:01:53,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13943 Valid, 29712 Invalid, 74 Unknown, 0 Unchecked, 33.35ms Time], IncrementalHoareTripleChecker [12 Valid, 61 Invalid, 1 Unknown, 0 Unchecked, 2552.29ms Time] [2021-11-05 20:01:53,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80872 states. [2021-11-05 20:01:55,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80872 to 80834. [2021-11-05 20:01:55,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80834 states, 79607 states have (on average 1.3733842501287574) internal successors, (109331), 79685 states have internal predecessors, (109331), 924 states have call successors, (924), 296 states have call predecessors, (924), 296 states have return successors, (924), 908 states have call predecessors, (924), 924 states have call successors, (924) [2021-11-05 20:01:55,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80834 states to 80834 states and 111179 transitions. [2021-11-05 20:01:55,826 INFO L78 Accepts]: Start accepts. Automaton has 80834 states and 111179 transitions. Word has length 316 [2021-11-05 20:01:55,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:01:55,827 INFO L470 AbstractCegarLoop]: Abstraction has 80834 states and 111179 transitions. [2021-11-05 20:01:55,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:01:55,829 INFO L276 IsEmpty]: Start isEmpty. Operand 80834 states and 111179 transitions. [2021-11-05 20:01:55,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-11-05 20:01:55,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:01:55,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:01:55,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 20:01:55,908 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting stmmac_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [stmmac_openErr0ASSERT_VIOLATIONERROR_FUNCTION, stmmac_openErr1ASSERT_VIOLATIONERROR_FUNCTION, stmmac_openErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 20:01:55,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:01:55,909 INFO L85 PathProgramCache]: Analyzing trace with hash 2069534405, now seen corresponding path program 1 times [2021-11-05 20:01:55,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:01:55,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209788437] [2021-11-05 20:01:55,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:01:55,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:01:56,849 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 20:01:56,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1159969687] [2021-11-05 20:01:56,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:01:56,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 20:01:56,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 20:01:56,852 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) [2021-11-05 20:01:56,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 20:02:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:02:04,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 21276 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 20:02:04,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 20:02:04,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:02:04,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 20:02:04,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:02:04,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209788437] [2021-11-05 20:02:04,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 20:02:04,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159969687] [2021-11-05 20:02:04,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159969687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:02:04,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:02:04,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 20:02:04,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065282253] [2021-11-05 20:02:04,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:02:04,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:02:04,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:02:04,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:02:04,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:02:04,843 INFO L87 Difference]: Start difference. First operand 80834 states and 111179 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:02:06,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:02:06,556 INFO L93 Difference]: Finished difference Result 161024 states and 222534 transitions. [2021-11-05 20:02:06,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:02:06,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 322 [2021-11-05 20:02:06,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:02:06,869 INFO L225 Difference]: With dead ends: 161024 [2021-11-05 20:02:06,869 INFO L226 Difference]: Without dead ends: 80834 [2021-11-05 20:02:07,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:02:07,269 INFO L933 BasicCegarLoop]: 14810 mSDtfsCounter, 14493 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14493 SdHoareTripleChecker+Valid, 14814 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.87ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.55ms IncrementalHoareTripleChecker+Time [2021-11-05 20:02:07,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14493 Valid, 14814 Invalid, 19 Unknown, 0 Unchecked, 23.87ms Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 27.55ms Time] [2021-11-05 20:02:07,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80834 states. [2021-11-05 20:02:08,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80834 to 80834. [2021-11-05 20:02:08,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80834 states, 79607 states have (on average 1.3726807944025023) internal successors, (109275), 79685 states have internal predecessors, (109275), 924 states have call successors, (924), 296 states have call predecessors, (924), 296 states have return successors, (924), 908 states have call predecessors, (924), 924 states have call successors, (924) [2021-11-05 20:02:09,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80834 states to 80834 states and 111123 transitions. [2021-11-05 20:02:09,211 INFO L78 Accepts]: Start accepts. Automaton has 80834 states and 111123 transitions. Word has length 322 [2021-11-05 20:02:09,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:02:09,212 INFO L470 AbstractCegarLoop]: Abstraction has 80834 states and 111123 transitions. [2021-11-05 20:02:09,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:02:09,212 INFO L276 IsEmpty]: Start isEmpty. Operand 80834 states and 111123 transitions. [2021-11-05 20:02:09,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2021-11-05 20:02:09,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:02:09,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:02:09,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 20:02:09,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 20:02:09,491 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting stmmac_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [stmmac_openErr0ASSERT_VIOLATIONERROR_FUNCTION, stmmac_openErr1ASSERT_VIOLATIONERROR_FUNCTION, stmmac_openErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 20:02:09,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:02:09,491 INFO L85 PathProgramCache]: Analyzing trace with hash -269445089, now seen corresponding path program 1 times [2021-11-05 20:02:09,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:02:09,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692589788] [2021-11-05 20:02:09,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:02:09,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:02:10,228 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 20:02:10,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882109723] [2021-11-05 20:02:10,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:02:10,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 20:02:10,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 20:02:10,230 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 20:02:10,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 20:02:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:02:17,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 21277 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 20:02:17,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 20:02:18,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:02:18,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 20:02:18,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:02:18,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692589788] [2021-11-05 20:02:18,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 20:02:18,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882109723] [2021-11-05 20:02:18,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882109723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:02:18,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:02:18,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 20:02:18,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185019740] [2021-11-05 20:02:18,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:02:18,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:02:18,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:02:18,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:02:18,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:02:18,187 INFO L87 Difference]: Start difference. First operand 80834 states and 111123 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 2 states have internal predecessors, (321), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)