./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-dec-tulip-de4x5.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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-dec-tulip-de4x5.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 45acb2c796116b4df93c0e090b1e242e2e986b4d7b1240180279cd2f8660db26 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 16:33:11,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 16:33:11,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 16:33:11,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 16:33:11,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 16:33:11,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 16:33:11,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 16:33:11,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 16:33:11,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 16:33:11,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 16:33:11,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 16:33:11,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 16:33:11,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 16:33:11,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 16:33:11,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 16:33:11,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 16:33:11,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 16:33:11,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 16:33:11,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 16:33:11,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 16:33:11,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 16:33:11,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 16:33:11,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 16:33:11,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 16:33:11,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 16:33:11,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 16:33:11,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 16:33:11,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 16:33:11,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 16:33:11,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 16:33:11,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 16:33:11,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 16:33:11,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 16:33:11,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 16:33:11,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 16:33:11,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 16:33:11,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 16:33:11,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 16:33:11,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 16:33:11,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 16:33:11,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 16:33:11,896 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 16:33:11,910 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 16:33:11,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 16:33:11,910 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 16:33:11,911 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 16:33:11,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 16:33:11,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 16:33:11,912 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 16:33:11,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 16:33:11,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 16:33:11,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 16:33:11,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 16:33:11,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 16:33:11,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 16:33:11,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 16:33:11,913 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 16:33:11,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 16:33:11,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 16:33:11,913 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 16:33:11,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 16:33:11,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:33:11,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 16:33:11,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 16:33:11,914 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 16:33:11,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 16:33:11,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 16:33:11,915 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 16:33:11,915 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 16:33:11,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 16:33:11,915 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 16:33:11,915 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45acb2c796116b4df93c0e090b1e242e2e986b4d7b1240180279cd2f8660db26 [2021-11-07 16:33:12,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 16:33:12,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 16:33:12,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 16:33:12,122 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 16:33:12,123 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 16:33:12,124 INFO L432 ainManager$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-dec-tulip-de4x5.cil.i [2021-11-07 16:33:12,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06839cd80/2df598c610d14bd58e1feb1467e8e3d5/FLAGd48f3ec4f [2021-11-07 16:33:12,920 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 16:33:12,920 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-dec-tulip-de4x5.cil.i [2021-11-07 16:33:12,993 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06839cd80/2df598c610d14bd58e1feb1467e8e3d5/FLAGd48f3ec4f [2021-11-07 16:33:13,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06839cd80/2df598c610d14bd58e1feb1467e8e3d5 [2021-11-07 16:33:13,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 16:33:13,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 16:33:13,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 16:33:13,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 16:33:13,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 16:33:13,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:33:13" (1/1) ... [2021-11-07 16:33:13,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a16041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:13, skipping insertion in model container [2021-11-07 16:33:13,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:33:13" (1/1) ... [2021-11-07 16:33:13,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 16:33:13,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 16:33:17,326 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-dec-tulip-de4x5.cil.i[480731,480744] [2021-11-07 16:33:17,331 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-dec-tulip-de4x5.cil.i[480876,480889] [2021-11-07 16:33:17,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:33:17,405 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 16:33:17,746 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-dec-tulip-de4x5.cil.i[480731,480744] [2021-11-07 16:33:17,747 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-dec-tulip-de4x5.cil.i[480876,480889] [2021-11-07 16:33:17,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:33:17,892 INFO L208 MainTranslator]: Completed translation [2021-11-07 16:33:17,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:17 WrapperNode [2021-11-07 16:33:17,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 16:33:17,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 16:33:17,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 16:33:17,895 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 16:33:17,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:17" (1/1) ... [2021-11-07 16:33:18,049 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:17" (1/1) ... [2021-11-07 16:33:20,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 16:33:20,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 16:33:20,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 16:33:20,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 16:33:20,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:17" (1/1) ... [2021-11-07 16:33:20,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:17" (1/1) ... [2021-11-07 16:33:20,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:17" (1/1) ... [2021-11-07 16:33:20,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:17" (1/1) ... [2021-11-07 16:33:21,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:17" (1/1) ... [2021-11-07 16:33:22,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:17" (1/1) ... [2021-11-07 16:33:22,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:17" (1/1) ... [2021-11-07 16:33:22,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 16:33:22,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 16:33:22,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 16:33:22,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 16:33:22,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:17" (1/1) ... [2021-11-07 16:33:22,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:33:22,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:33:22,580 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) [2021-11-07 16:33:22,602 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 [2021-11-07 16:33:22,612 INFO L130 BoogieDeclarations]: Found specification of procedure type4_infoblock [2021-11-07 16:33:22,614 INFO L138 BoogieDeclarations]: Found implementation of procedure type4_infoblock [2021-11-07 16:33:22,614 INFO L130 BoogieDeclarations]: Found specification of procedure type2_infoblock [2021-11-07 16:33:22,614 INFO L138 BoogieDeclarations]: Found implementation of procedure type2_infoblock [2021-11-07 16:33:22,614 INFO L130 BoogieDeclarations]: Found specification of procedure type0_infoblock [2021-11-07 16:33:22,614 INFO L138 BoogieDeclarations]: Found implementation of procedure type0_infoblock [2021-11-07 16:33:22,614 INFO L130 BoogieDeclarations]: Found specification of procedure dc21143_infoleaf [2021-11-07 16:33:22,614 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21143_infoleaf [2021-11-07 16:33:22,614 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-07 16:33:22,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 16:33:22,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 16:33:22,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 16:33:22,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 16:33:22,615 INFO L130 BoogieDeclarations]: Found specification of procedure srom_autoconf [2021-11-07 16:33:22,615 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_autoconf [2021-11-07 16:33:22,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 16:33:22,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 16:33:22,615 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-07 16:33:22,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-07 16:33:22,616 INFO L130 BoogieDeclarations]: Found specification of procedure dc21142_infoleaf [2021-11-07 16:33:22,616 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21142_infoleaf [2021-11-07 16:33:22,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 16:33:22,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 16:33:22,616 INFO L130 BoogieDeclarations]: Found specification of procedure type3_infoblock [2021-11-07 16:33:22,616 INFO L138 BoogieDeclarations]: Found implementation of procedure type3_infoblock [2021-11-07 16:33:22,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 16:33:22,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 16:33:22,616 INFO L130 BoogieDeclarations]: Found specification of procedure type5_infoblock [2021-11-07 16:33:22,617 INFO L138 BoogieDeclarations]: Found implementation of procedure type5_infoblock [2021-11-07 16:33:22,617 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140m_autoconf [2021-11-07 16:33:22,617 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140m_autoconf [2021-11-07 16:33:22,617 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_open [2021-11-07 16:33:22,617 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_open [2021-11-07 16:33:22,617 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_autoconf [2021-11-07 16:33:22,617 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_autoconf [2021-11-07 16:33:22,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 16:33:22,617 INFO L130 BoogieDeclarations]: Found specification of procedure autoconf_media [2021-11-07 16:33:22,618 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconf_media [2021-11-07 16:33:22,618 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_autoconf [2021-11-07 16:33:22,618 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_autoconf [2021-11-07 16:33:22,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 16:33:22,618 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ast [2021-11-07 16:33:22,618 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ast [2021-11-07 16:33:22,618 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2021-11-07 16:33:22,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2021-11-07 16:33:22,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 16:33:22,619 INFO L130 BoogieDeclarations]: Found specification of procedure type1_infoblock [2021-11-07 16:33:22,619 INFO L138 BoogieDeclarations]: Found implementation of procedure type1_infoblock [2021-11-07 16:33:22,619 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140_infoleaf [2021-11-07 16:33:22,619 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140_infoleaf [2021-11-07 16:33:22,619 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init [2021-11-07 16:33:22,620 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init [2021-11-07 16:33:22,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 16:33:22,620 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_suspect_state [2021-11-07 16:33:22,620 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_suspect_state [2021-11-07 16:33:22,620 INFO L130 BoogieDeclarations]: Found specification of procedure compact_infoblock [2021-11-07 16:33:22,620 INFO L138 BoogieDeclarations]: Found implementation of procedure compact_infoblock [2021-11-07 16:33:22,621 INFO L130 BoogieDeclarations]: Found specification of procedure dc2114x_autoconf [2021-11-07 16:33:22,621 INFO L138 BoogieDeclarations]: Found implementation of procedure dc2114x_autoconf [2021-11-07 16:33:22,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 16:33:22,622 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-07 16:34:30,676 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 16:34:30,677 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 16:34:30,677 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 16:34:30,677 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-07 16:34:30,677 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-07 16:34:30,677 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#5: ldv_switch_0_#res := 0; [2021-11-07 16:34:30,686 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#6: ldv_switch_0_#res := 0; [2021-11-07 16:34:30,686 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 16:34:30,686 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#7: ldv_switch_0_#res := 0; [2021-11-07 16:34:30,686 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#8: ldv_switch_0_#res := 0; [2021-11-07 16:34:30,687 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 16:34:30,688 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 16:34:31,022 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 16:34:31,023 INFO L299 CfgBuilder]: Removed 21830 assume(true) statements. [2021-11-07 16:34:31,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:34:31 BoogieIcfgContainer [2021-11-07 16:34:31,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 16:34:31,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 16:34:31,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 16:34:31,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 16:34:31,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:33:13" (1/3) ... [2021-11-07 16:34:31,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7781334e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:34:31, skipping insertion in model container [2021-11-07 16:34:31,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:17" (2/3) ... [2021-11-07 16:34:31,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7781334e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:34:31, skipping insertion in model container [2021-11-07 16:34:31,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:34:31" (3/3) ... [2021-11-07 16:34:31,045 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2021-11-07 16:34:31,049 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 16:34:31,049 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-07 16:34:31,134 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 16:34:31,138 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 [2021-11-07 16:34:31,138 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-07 16:34:31,302 INFO L276 IsEmpty]: Start isEmpty. Operand has 17632 states, 17521 states have (on average 1.2907368300896067) internal successors, (22615), 17523 states have internal predecessors, (22615), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-07 16:34:31,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 16:34:31,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:34:31,333 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] [2021-11-07 16:34:31,334 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:34:31,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:34:31,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1054011777, now seen corresponding path program 1 times [2021-11-07 16:34:31,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:34:31,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111180428] [2021-11-07 16:34:31,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:34:31,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:34:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:34:32,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:34:32,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:34:32,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111180428] [2021-11-07 16:34:32,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111180428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:34:32,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:34:32,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:34:32,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924623209] [2021-11-07 16:34:32,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:34:32,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:34:32,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:34:32,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:34:32,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:34:32,273 INFO L87 Difference]: Start difference. First operand has 17632 states, 17521 states have (on average 1.2907368300896067) internal successors, (22615), 17523 states have internal predecessors, (22615), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-11-07 16:34:34,366 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:34:35,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:34:35,696 INFO L93 Difference]: Finished difference Result 48591 states and 63143 transitions. [2021-11-07 16:34:35,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:34:35,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 86 [2021-11-07 16:34:35,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:34:35,911 INFO L225 Difference]: With dead ends: 48591 [2021-11-07 16:34:35,911 INFO L226 Difference]: Without dead ends: 30778 [2021-11-07 16:34:36,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:34:36,139 INFO L933 BasicCegarLoop]: 22090 mSDtfsCounter, 18003 mSDsluCounter, 21911 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2167.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18003 SdHoareTripleChecker+Valid, 44001 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 99.20ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2332.54ms IncrementalHoareTripleChecker+Time [2021-11-07 16:34:36,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18003 Valid, 44001 Invalid, 94 Unknown, 0 Unchecked, 99.20ms Time], IncrementalHoareTripleChecker [19 Valid, 74 Invalid, 1 Unknown, 0 Unchecked, 2332.54ms Time] [2021-11-07 16:34:36,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30778 states. [2021-11-07 16:34:37,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30778 to 30770. [2021-11-07 16:34:37,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30770 states, 30557 states have (on average 1.2775141538763621) internal successors, (39037), 30559 states have internal predecessors, (39037), 167 states have call successors, (167), 44 states have call predecessors, (167), 44 states have return successors, (167), 167 states have call predecessors, (167), 167 states have call successors, (167) [2021-11-07 16:34:37,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30770 states to 30770 states and 39371 transitions. [2021-11-07 16:34:37,698 INFO L78 Accepts]: Start accepts. Automaton has 30770 states and 39371 transitions. Word has length 86 [2021-11-07 16:34:37,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:34:37,700 INFO L470 AbstractCegarLoop]: Abstraction has 30770 states and 39371 transitions. [2021-11-07 16:34:37,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-11-07 16:34:37,701 INFO L276 IsEmpty]: Start isEmpty. Operand 30770 states and 39371 transitions. [2021-11-07 16:34:37,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 16:34:37,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:34:37,727 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] [2021-11-07 16:34:37,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 16:34:37,728 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:34:37,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:34:37,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1596591377, now seen corresponding path program 1 times [2021-11-07 16:34:37,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:34:37,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413979150] [2021-11-07 16:34:37,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:34:37,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:34:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:34:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:34:37,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:34:37,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413979150] [2021-11-07 16:34:37,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413979150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:34:37,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:34:37,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:34:37,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949458644] [2021-11-07 16:34:37,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:34:37,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:34:37,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:34:37,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:34:37,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:34:37,966 INFO L87 Difference]: Start difference. First operand 30770 states and 39371 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:34:40,015 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:34:41,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:34:41,629 INFO L93 Difference]: Finished difference Result 90909 states and 116603 transitions. [2021-11-07 16:34:41,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:34:41,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-07 16:34:41,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:34:41,965 INFO L225 Difference]: With dead ends: 90909 [2021-11-07 16:34:41,965 INFO L226 Difference]: Without dead ends: 60263 [2021-11-07 16:34:42,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:34:42,251 INFO L933 BasicCegarLoop]: 21758 mSDtfsCounter, 20968 mSDsluCounter, 21330 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2088.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20968 SdHoareTripleChecker+Valid, 43088 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 264.60ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2275.69ms IncrementalHoareTripleChecker+Time [2021-11-07 16:34:42,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20968 Valid, 43088 Invalid, 44 Unknown, 0 Unchecked, 264.60ms Time], IncrementalHoareTripleChecker [12 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 2275.69ms Time] [2021-11-07 16:34:42,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60263 states. [2021-11-07 16:34:43,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60263 to 60126. [2021-11-07 16:34:43,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60126 states, 59702 states have (on average 1.27702589527989) internal successors, (76241), 59705 states have internal predecessors, (76241), 334 states have call successors, (334), 88 states have call predecessors, (334), 88 states have return successors, (636), 334 states have call predecessors, (636), 334 states have call successors, (636) [2021-11-07 16:34:43,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60126 states to 60126 states and 77211 transitions. [2021-11-07 16:34:43,777 INFO L78 Accepts]: Start accepts. Automaton has 60126 states and 77211 transitions. Word has length 91 [2021-11-07 16:34:43,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:34:43,779 INFO L470 AbstractCegarLoop]: Abstraction has 60126 states and 77211 transitions. [2021-11-07 16:34:43,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:34:43,779 INFO L276 IsEmpty]: Start isEmpty. Operand 60126 states and 77211 transitions. [2021-11-07 16:34:43,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 16:34:43,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:34:43,801 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] [2021-11-07 16:34:43,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 16:34:43,802 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:34:43,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:34:43,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1781012299, now seen corresponding path program 1 times [2021-11-07 16:34:43,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:34:43,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099082450] [2021-11-07 16:34:43,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:34:43,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:34:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:34:44,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:34:44,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:34:44,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099082450] [2021-11-07 16:34:44,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099082450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:34:44,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:34:44,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:34:44,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514427822] [2021-11-07 16:34:44,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:34:44,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:34:44,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:34:44,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:34:44,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:34:44,023 INFO L87 Difference]: Start difference. First operand 60126 states and 77211 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-11-07 16:34:46,074 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:34:48,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:34:48,471 INFO L93 Difference]: Finished difference Result 178118 states and 228711 transitions. [2021-11-07 16:34:48,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:34:48,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 108 [2021-11-07 16:34:48,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:34:49,422 INFO L225 Difference]: With dead ends: 178118 [2021-11-07 16:34:49,422 INFO L226 Difference]: Without dead ends: 118116 [2021-11-07 16:34:50,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.72ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:34:50,017 INFO L933 BasicCegarLoop]: 21678 mSDtfsCounter, 20786 mSDsluCounter, 21558 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2087.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20786 SdHoareTripleChecker+Valid, 43236 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.19ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2221.11ms IncrementalHoareTripleChecker+Time [2021-11-07 16:34:50,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20786 Valid, 43236 Invalid, 59 Unknown, 0 Unchecked, 38.19ms Time], IncrementalHoareTripleChecker [9 Valid, 49 Invalid, 1 Unknown, 0 Unchecked, 2221.11ms Time] [2021-11-07 16:34:50,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118116 states. [2021-11-07 16:34:52,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118116 to 118108. [2021-11-07 16:34:53,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118108 states, 117266 states have (on average 1.2764569440417513) internal successors, (149685), 117271 states have internal predecessors, (149685), 664 states have call successors, (664), 176 states have call predecessors, (664), 176 states have return successors, (1264), 664 states have call predecessors, (1264), 664 states have call successors, (1264) [2021-11-07 16:34:53,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118108 states to 118108 states and 151613 transitions. [2021-11-07 16:34:53,738 INFO L78 Accepts]: Start accepts. Automaton has 118108 states and 151613 transitions. Word has length 108 [2021-11-07 16:34:53,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:34:53,738 INFO L470 AbstractCegarLoop]: Abstraction has 118108 states and 151613 transitions. [2021-11-07 16:34:53,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-11-07 16:34:53,738 INFO L276 IsEmpty]: Start isEmpty. Operand 118108 states and 151613 transitions. [2021-11-07 16:34:53,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-07 16:34:53,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:34:53,760 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] [2021-11-07 16:34:53,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 16:34:53,761 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:34:53,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:34:53,761 INFO L85 PathProgramCache]: Analyzing trace with hash -2015465521, now seen corresponding path program 1 times [2021-11-07 16:34:53,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:34:53,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476354043] [2021-11-07 16:34:53,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:34:53,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:34:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:34:53,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:34:53,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:34:53,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476354043] [2021-11-07 16:34:53,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476354043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:34:53,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:34:53,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:34:53,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370595543] [2021-11-07 16:34:53,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:34:53,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:34:53,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:34:53,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:34:53,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:34:53,958 INFO L87 Difference]: Start difference. First operand 118108 states and 151613 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2021-11-07 16:34:56,006 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []