./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-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-challenges/linux-3.14_complex_emg_linux-kernel-locking-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 52f53de973aa03e2a9eaadeeb26ce30c3104ed671c54a416d14fc4c2bdab8bd9 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 19:13:35,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 19:13:35,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 19:13:35,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 19:13:35,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 19:13:35,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 19:13:35,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 19:13:35,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 19:13:35,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 19:13:35,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 19:13:35,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 19:13:35,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 19:13:35,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 19:13:35,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 19:13:35,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 19:13:35,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 19:13:35,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 19:13:35,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 19:13:35,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 19:13:36,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 19:13:36,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 19:13:36,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 19:13:36,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 19:13:36,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 19:13:36,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 19:13:36,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 19:13:36,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 19:13:36,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 19:13:36,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 19:13:36,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 19:13:36,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 19:13:36,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 19:13:36,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 19:13:36,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 19:13:36,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 19:13:36,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 19:13:36,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 19:13:36,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 19:13:36,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 19:13:36,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 19:13:36,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 19:13:36,019 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 19:13:36,043 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 19:13:36,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 19:13:36,044 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 19:13:36,044 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 19:13:36,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 19:13:36,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 19:13:36,046 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 19:13:36,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 19:13:36,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 19:13:36,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 19:13:36,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 19:13:36,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 19:13:36,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 19:13:36,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 19:13:36,048 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 19:13:36,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 19:13:36,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 19:13:36,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 19:13:36,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 19:13:36,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 19:13:36,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 19:13:36,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 19:13:36,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 19:13:36,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 19:13:36,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 19:13:36,049 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 19:13:36,049 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 19:13:36,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 19:13:36,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 19:13:36,051 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52f53de973aa03e2a9eaadeeb26ce30c3104ed671c54a416d14fc4c2bdab8bd9 [2021-11-07 19:13:36,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 19:13:36,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 19:13:36,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 19:13:36,325 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 19:13:36,326 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 19:13:36,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2021-11-07 19:13:36,382 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4984228a1/71896625061b4455b3e09d6924336288/FLAG2318b4208 [2021-11-07 19:13:37,195 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 19:13:37,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2021-11-07 19:13:37,258 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4984228a1/71896625061b4455b3e09d6924336288/FLAG2318b4208 [2021-11-07 19:13:37,367 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4984228a1/71896625061b4455b3e09d6924336288 [2021-11-07 19:13:37,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 19:13:37,371 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 19:13:37,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 19:13:37,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 19:13:37,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 19:13:37,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:13:37" (1/1) ... [2021-11-07 19:13:37,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d35e024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:13:37, skipping insertion in model container [2021-11-07 19:13:37,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:13:37" (1/1) ... [2021-11-07 19:13:37,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 19:13:37,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 19:13:41,098 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[479863,479876] [2021-11-07 19:13:41,100 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[480032,480045] [2021-11-07 19:13:41,101 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[480199,480212] [2021-11-07 19:13:41,101 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[480367,480380] [2021-11-07 19:13:41,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 19:13:41,166 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 19:13:41,550 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[479863,479876] [2021-11-07 19:13:41,551 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[480032,480045] [2021-11-07 19:13:41,551 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[480199,480212] [2021-11-07 19:13:41,551 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[480367,480380] [2021-11-07 19:13:41,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 19:13:41,681 INFO L208 MainTranslator]: Completed translation [2021-11-07 19:13:41,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:13:41 WrapperNode [2021-11-07 19:13:41,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 19:13:41,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 19:13:41,683 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 19:13:41,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 19:13:41,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:13:41" (1/1) ... [2021-11-07 19:13:41,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:13:41" (1/1) ... [2021-11-07 19:13:43,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 19:13:43,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 19:13:43,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 19:13:43,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 19:13:43,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:13:41" (1/1) ... [2021-11-07 19:13:43,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:13:41" (1/1) ... [2021-11-07 19:13:44,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:13:41" (1/1) ... [2021-11-07 19:13:44,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:13:41" (1/1) ... [2021-11-07 19:13:45,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:13:41" (1/1) ... [2021-11-07 19:13:46,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:13:41" (1/1) ... [2021-11-07 19:13:46,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:13:41" (1/1) ... [2021-11-07 19:13:46,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 19:13:46,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 19:13:46,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 19:13:46,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 19:13:46,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:13:41" (1/1) ... [2021-11-07 19:13:46,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 19:13:46,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 19:13:46,786 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 19:13:46,815 INFO L130 BoogieDeclarations]: Found specification of procedure type4_infoblock [2021-11-07 19:13:46,791 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 19:13:46,815 INFO L138 BoogieDeclarations]: Found implementation of procedure type4_infoblock [2021-11-07 19:13:46,816 INFO L130 BoogieDeclarations]: Found specification of procedure type2_infoblock [2021-11-07 19:13:46,816 INFO L138 BoogieDeclarations]: Found implementation of procedure type2_infoblock [2021-11-07 19:13:46,816 INFO L130 BoogieDeclarations]: Found specification of procedure type0_infoblock [2021-11-07 19:13:46,816 INFO L138 BoogieDeclarations]: Found implementation of procedure type0_infoblock [2021-11-07 19:13:46,816 INFO L130 BoogieDeclarations]: Found specification of procedure dc21143_infoleaf [2021-11-07 19:13:46,816 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21143_infoleaf [2021-11-07 19:13:46,816 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-07 19:13:46,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 19:13:46,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 19:13:46,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 19:13:46,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 19:13:46,816 INFO L130 BoogieDeclarations]: Found specification of procedure srom_autoconf [2021-11-07 19:13:46,817 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_autoconf [2021-11-07 19:13:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 19:13:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 19:13:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-07 19:13:46,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-07 19:13:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure dc21142_infoleaf [2021-11-07 19:13:46,817 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21142_infoleaf [2021-11-07 19:13:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 19:13:46,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 19:13:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure type3_infoblock [2021-11-07 19:13:46,817 INFO L138 BoogieDeclarations]: Found implementation of procedure type3_infoblock [2021-11-07 19:13:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 19:13:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 19:13:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure type5_infoblock [2021-11-07 19:13:46,817 INFO L138 BoogieDeclarations]: Found implementation of procedure type5_infoblock [2021-11-07 19:13:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140m_autoconf [2021-11-07 19:13:46,818 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140m_autoconf [2021-11-07 19:13:46,818 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_open [2021-11-07 19:13:46,818 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_open [2021-11-07 19:13:46,818 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_autoconf [2021-11-07 19:13:46,818 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_autoconf [2021-11-07 19:13:46,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 19:13:46,818 INFO L130 BoogieDeclarations]: Found specification of procedure autoconf_media [2021-11-07 19:13:46,818 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconf_media [2021-11-07 19:13:46,818 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_autoconf [2021-11-07 19:13:46,818 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_autoconf [2021-11-07 19:13:46,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 19:13:46,818 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ast [2021-11-07 19:13:46,818 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ast [2021-11-07 19:13:46,818 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2021-11-07 19:13:46,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2021-11-07 19:13:46,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 19:13:46,819 INFO L130 BoogieDeclarations]: Found specification of procedure type1_infoblock [2021-11-07 19:13:46,819 INFO L138 BoogieDeclarations]: Found implementation of procedure type1_infoblock [2021-11-07 19:13:46,819 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140_infoleaf [2021-11-07 19:13:46,819 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140_infoleaf [2021-11-07 19:13:46,819 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init [2021-11-07 19:13:46,819 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init [2021-11-07 19:13:46,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 19:13:46,819 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_suspect_state [2021-11-07 19:13:46,819 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_suspect_state [2021-11-07 19:13:46,819 INFO L130 BoogieDeclarations]: Found specification of procedure compact_infoblock [2021-11-07 19:13:46,819 INFO L138 BoogieDeclarations]: Found implementation of procedure compact_infoblock [2021-11-07 19:13:46,819 INFO L130 BoogieDeclarations]: Found specification of procedure dc2114x_autoconf [2021-11-07 19:13:46,819 INFO L138 BoogieDeclarations]: Found implementation of procedure dc2114x_autoconf [2021-11-07 19:13:46,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 19:13:46,820 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-07 19:14:30,416 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 19:14:30,416 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 19:14:30,416 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 19:14:30,417 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-07 19:14:30,417 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-07 19:14:30,418 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#5: ldv_switch_0_#res := 0; [2021-11-07 19:14:30,421 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#6: ldv_switch_0_#res := 0; [2021-11-07 19:14:30,421 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 19:14:30,421 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#7: ldv_switch_0_#res := 0; [2021-11-07 19:14:30,421 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#8: ldv_switch_0_#res := 0; [2021-11-07 19:14:30,422 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 19:14:30,423 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 19:14:30,665 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 19:14:30,666 INFO L299 CfgBuilder]: Removed 21838 assume(true) statements. [2021-11-07 19:14:30,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:14:30 BoogieIcfgContainer [2021-11-07 19:14:30,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 19:14:30,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 19:14:30,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 19:14:30,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 19:14:30,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:13:37" (1/3) ... [2021-11-07 19:14:30,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aad3c4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:14:30, skipping insertion in model container [2021-11-07 19:14:30,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:13:41" (2/3) ... [2021-11-07 19:14:30,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aad3c4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:14:30, skipping insertion in model container [2021-11-07 19:14:30,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:14:30" (3/3) ... [2021-11-07 19:14:30,685 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2021-11-07 19:14:30,690 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 19:14:30,691 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 91 error locations. [2021-11-07 19:14:30,779 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 19:14:30,787 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 19:14:30,787 INFO L340 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2021-11-07 19:14:30,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 17891 states, 17691 states have (on average 1.2968741167825448) internal successors, (22943), 17782 states have internal predecessors, (22943), 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 19:14:30,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 19:14:30,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:14:30,949 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] [2021-11-07 19:14:30,949 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 88 more)] === [2021-11-07 19:14:30,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:14:30,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1649355456, now seen corresponding path program 1 times [2021-11-07 19:14:30,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:14:30,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4722463] [2021-11-07 19:14:30,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:14:30,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:14:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:14:31,545 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 19:14:31,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:14:31,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4722463] [2021-11-07 19:14:31,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4722463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:14:31,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:14:31,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:14:31,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834024333] [2021-11-07 19:14:31,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:14:31,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:14:31,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:14:31,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:14:31,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:14:31,609 INFO L87 Difference]: Start difference. First operand has 17891 states, 17691 states have (on average 1.2968741167825448) internal successors, (22943), 17782 states have internal predecessors, (22943), 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 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 19:14:33,682 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:14:35,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:14:35,173 INFO L93 Difference]: Finished difference Result 52311 states and 67734 transitions. [2021-11-07 19:14:35,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:14:35,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2021-11-07 19:14:35,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:14:35,361 INFO L225 Difference]: With dead ends: 52311 [2021-11-07 19:14:35,361 INFO L226 Difference]: Without dead ends: 34261 [2021-11-07 19:14:35,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:14:35,783 INFO L933 BasicCegarLoop]: 22307 mSDtfsCounter, 21890 mSDsluCounter, 22180 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2069.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21890 SdHoareTripleChecker+Valid, 44487 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 92.64ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2200.41ms IncrementalHoareTripleChecker+Time [2021-11-07 19:14:35,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21890 Valid, 44487 Invalid, 14 Unknown, 0 Unchecked, 92.64ms Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 1 Unknown, 0 Unchecked, 2200.41ms Time] [2021-11-07 19:14:35,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34261 states. [2021-11-07 19:14:36,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34261 to 34131. [2021-11-07 19:14:36,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34131 states, 33822 states have (on average 1.2727218969901248) internal successors, (43046), 33914 states have internal predecessors, (43046), 174 states have call successors, (174), 44 states have call predecessors, (174), 44 states have return successors, (174), 174 states have call predecessors, (174), 174 states have call successors, (174) [2021-11-07 19:14:36,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34131 states to 34131 states and 43394 transitions. [2021-11-07 19:14:36,860 INFO L78 Accepts]: Start accepts. Automaton has 34131 states and 43394 transitions. Word has length 60 [2021-11-07 19:14:36,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:14:36,861 INFO L470 AbstractCegarLoop]: Abstraction has 34131 states and 43394 transitions. [2021-11-07 19:14:36,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 19:14:36,862 INFO L276 IsEmpty]: Start isEmpty. Operand 34131 states and 43394 transitions. [2021-11-07 19:14:36,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 19:14:36,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:14:36,868 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] [2021-11-07 19:14:36,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 19:14:36,869 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 88 more)] === [2021-11-07 19:14:36,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:14:36,870 INFO L85 PathProgramCache]: Analyzing trace with hash 831250567, now seen corresponding path program 1 times [2021-11-07 19:14:36,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:14:36,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771934444] [2021-11-07 19:14:36,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:14:36,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:14:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:14:37,093 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 19:14:37,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:14:37,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771934444] [2021-11-07 19:14:37,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771934444] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:14:37,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:14:37,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:14:37,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332275106] [2021-11-07 19:14:37,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:14:37,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:14:37,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:14:37,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:14:37,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:14:37,096 INFO L87 Difference]: Start difference. First operand 34131 states and 43394 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 19:14:39,139 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:14:41,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:14:41,093 INFO L93 Difference]: Finished difference Result 100801 states and 128463 transitions. [2021-11-07 19:14:41,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:14:41,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2021-11-07 19:14:41,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:14:41,413 INFO L225 Difference]: With dead ends: 100801 [2021-11-07 19:14:41,413 INFO L226 Difference]: Without dead ends: 66794 [2021-11-07 19:14:41,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:14:41,581 INFO L933 BasicCegarLoop]: 22046 mSDtfsCounter, 21235 mSDsluCounter, 21597 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2089.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21235 SdHoareTripleChecker+Valid, 43643 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.03ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2236.58ms IncrementalHoareTripleChecker+Time [2021-11-07 19:14:41,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21235 Valid, 43643 Invalid, 44 Unknown, 0 Unchecked, 54.03ms Time], IncrementalHoareTripleChecker [12 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 2236.58ms Time] [2021-11-07 19:14:41,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66794 states. [2021-11-07 19:14:42,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66794 to 66360. [2021-11-07 19:14:43,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66360 states, 65833 states have (on average 1.2727355581547248) internal successors, (83788), 65927 states have internal predecessors, (83788), 348 states have call successors, (348), 88 states have call predecessors, (348), 88 states have return successors, (664), 348 states have call predecessors, (664), 348 states have call successors, (664) [2021-11-07 19:14:43,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66360 states to 66360 states and 84800 transitions. [2021-11-07 19:14:43,502 INFO L78 Accepts]: Start accepts. Automaton has 66360 states and 84800 transitions. Word has length 61 [2021-11-07 19:14:43,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:14:43,503 INFO L470 AbstractCegarLoop]: Abstraction has 66360 states and 84800 transitions. [2021-11-07 19:14:43,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 19:14:43,503 INFO L276 IsEmpty]: Start isEmpty. Operand 66360 states and 84800 transitions. [2021-11-07 19:14:43,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 19:14:43,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:14:43,506 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] [2021-11-07 19:14:43,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 19:14:43,506 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 88 more)] === [2021-11-07 19:14:43,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:14:43,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2012454023, now seen corresponding path program 1 times [2021-11-07 19:14:43,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:14:43,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590616063] [2021-11-07 19:14:43,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:14:43,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:14:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:14:43,688 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 19:14:43,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:14:43,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590616063] [2021-11-07 19:14:43,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590616063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:14:43,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:14:43,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:14:43,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906692915] [2021-11-07 19:14:43,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:14:43,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:14:43,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:14:43,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:14:43,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:14:43,692 INFO L87 Difference]: Start difference. First operand 66360 states and 84800 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 19:14:45,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:14:48,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:14:48,601 INFO L93 Difference]: Finished difference Result 196776 states and 251418 transitions. [2021-11-07 19:14:48,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:14:48,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2021-11-07 19:14:48,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:14:49,175 INFO L225 Difference]: With dead ends: 196776 [2021-11-07 19:14:49,175 INFO L226 Difference]: Without dead ends: 130540 [2021-11-07 19:14:49,724 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 19:14:49,725 INFO L933 BasicCegarLoop]: 21946 mSDtfsCounter, 21030 mSDsluCounter, 21825 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2080.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21030 SdHoareTripleChecker+Valid, 43771 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.72ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2233.30ms IncrementalHoareTripleChecker+Time [2021-11-07 19:14:49,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21030 Valid, 43771 Invalid, 59 Unknown, 0 Unchecked, 38.72ms Time], IncrementalHoareTripleChecker [9 Valid, 49 Invalid, 1 Unknown, 0 Unchecked, 2233.30ms Time] [2021-11-07 19:14:49,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130540 states.