./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test1-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test1-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 05263e1a00e36e758633b8fa4d2ee72b914ab3e1 ............................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test1-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 05263e1a00e36e758633b8fa4d2ee72b914ab3e1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:00:04,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:00:04,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:00:04,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:00:04,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:00:04,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:00:04,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:00:04,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:00:04,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:00:04,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:00:04,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:00:04,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:00:04,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:00:04,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:00:04,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:00:04,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:00:04,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:00:04,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:00:04,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:00:04,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:00:04,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:00:04,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:00:04,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:00:04,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:00:04,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:00:04,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:00:04,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:00:04,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:00:04,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:00:04,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:00:04,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:00:04,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:00:04,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:00:04,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:00:04,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:00:04,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:00:04,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:00:04,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:00:04,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:00:04,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:00:04,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:00:04,431 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 06:00:04,452 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:00:04,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:00:04,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:00:04,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:00:04,455 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:00:04,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:00:04,455 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:00:04,456 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:00:04,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:00:04,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:00:04,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:00:04,457 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:00:04,457 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:00:04,457 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:00:04,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:00:04,458 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:00:04,458 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:00:04,460 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:00:04,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:00:04,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:00:04,461 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:00:04,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:00:04,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:00:04,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:00:04,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:00:04,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:00:04,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:00:04,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:00:04,464 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05263e1a00e36e758633b8fa4d2ee72b914ab3e1 [2020-10-20 06:00:04,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:00:04,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:00:04,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:00:04,717 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:00:04,717 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:00:04,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test1-3.i [2020-10-20 06:00:04,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fb4f824b/d6e05f5725fe4bfda895fde38aa0a406/FLAG211b9c210 [2020-10-20 06:00:05,343 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:00:05,344 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test1-3.i [2020-10-20 06:00:05,360 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fb4f824b/d6e05f5725fe4bfda895fde38aa0a406/FLAG211b9c210 [2020-10-20 06:00:05,613 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fb4f824b/d6e05f5725fe4bfda895fde38aa0a406 [2020-10-20 06:00:05,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:00:05,622 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:00:05,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:00:05,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:00:05,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:00:05,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:00:05" (1/1) ... [2020-10-20 06:00:05,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@771c1114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:00:05, skipping insertion in model container [2020-10-20 06:00:05,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:00:05" (1/1) ... [2020-10-20 06:00:05,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:00:05,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:00:06,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:00:06,156 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2020-10-20 06:00:06,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@774b7b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:00:06, skipping insertion in model container [2020-10-20 06:00:06,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:00:06,157 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2020-10-20 06:00:06,160 INFO L168 Benchmark]: Toolchain (without parser) took 541.41 ms. Allocated memory was 36.2 MB in the beginning and 44.6 MB in the end (delta: 8.4 MB). Free memory was 18.1 MB in the beginning and 23.0 MB in the end (delta: -4.9 MB). Peak memory consumption was 13.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:00:06,162 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 33.6 MB. Free memory was 11.8 MB in the beginning and 11.7 MB in the end (delta: 47.7 kB). Peak memory consumption was 47.7 kB. Max. memory is 14.3 GB. [2020-10-20 06:00:06,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 532.89 ms. Allocated memory was 36.2 MB in the beginning and 44.6 MB in the end (delta: 8.4 MB). Free memory was 17.2 MB in the beginning and 23.0 MB in the end (delta: -5.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:00:06,165 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 33.6 MB. Free memory was 11.8 MB in the beginning and 11.7 MB in the end (delta: 47.7 kB). Peak memory consumption was 47.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 532.89 ms. Allocated memory was 36.2 MB in the beginning and 44.6 MB in the end (delta: 8.4 MB). Free memory was 17.2 MB in the beginning and 23.0 MB in the end (delta: -5.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:00:08,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:00:08,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:00:08,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:00:08,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:00:08,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:00:08,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:00:08,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:00:08,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:00:08,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:00:08,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:00:08,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:00:08,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:00:08,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:00:08,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:00:08,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:00:08,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:00:08,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:00:08,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:00:08,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:00:08,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:00:08,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:00:08,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:00:08,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:00:08,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:00:08,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:00:08,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:00:08,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:00:08,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:00:08,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:00:08,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:00:08,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:00:08,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:00:08,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:00:08,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:00:08,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:00:08,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:00:08,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:00:08,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:00:08,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:00:08,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:00:08,212 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-20 06:00:08,234 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:00:08,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:00:08,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:00:08,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:00:08,237 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:00:08,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:00:08,237 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:00:08,237 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:00:08,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:00:08,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:00:08,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:00:08,238 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:00:08,238 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:00:08,239 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:00:08,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:00:08,239 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:00:08,239 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 06:00:08,240 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 06:00:08,240 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:00:08,240 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:00:08,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:00:08,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:00:08,241 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:00:08,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:00:08,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:00:08,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:00:08,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:00:08,242 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 06:00:08,242 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 06:00:08,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:00:08,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 06:00:08,243 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05263e1a00e36e758633b8fa4d2ee72b914ab3e1 [2020-10-20 06:00:08,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:00:08,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:00:08,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:00:08,484 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:00:08,486 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:00:08,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test1-3.i [2020-10-20 06:00:08,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3afcfd8a/cce0e2e65da4427b830ef310b25e0a0b/FLAG937b33060 [2020-10-20 06:00:09,247 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:00:09,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test1-3.i [2020-10-20 06:00:09,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3afcfd8a/cce0e2e65da4427b830ef310b25e0a0b/FLAG937b33060 [2020-10-20 06:00:09,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3afcfd8a/cce0e2e65da4427b830ef310b25e0a0b [2020-10-20 06:00:09,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:00:09,431 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:00:09,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:00:09,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:00:09,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:00:09,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:00:09" (1/1) ... [2020-10-20 06:00:09,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f77b7f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:00:09, skipping insertion in model container [2020-10-20 06:00:09,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:00:09" (1/1) ... [2020-10-20 06:00:09,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:00:09,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:00:10,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:00:10,057 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-10-20 06:00:10,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:00:10,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:00:10,163 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:00:10,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:00:10,344 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:00:10,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:00:10 WrapperNode [2020-10-20 06:00:10,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:00:10,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:00:10,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:00:10,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:00:10,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:00:10" (1/1) ... [2020-10-20 06:00:10,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:00:10" (1/1) ... [2020-10-20 06:00:10,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:00:10" (1/1) ... [2020-10-20 06:00:10,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:00:10" (1/1) ... [2020-10-20 06:00:10,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:00:10" (1/1) ... [2020-10-20 06:00:10,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:00:10" (1/1) ... [2020-10-20 06:00:10,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:00:10" (1/1) ... [2020-10-20 06:00:10,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:00:10,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:00:10,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:00:10,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:00:10,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:00:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:00:10,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:00:10,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:00:10,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-10-20 06:00:10,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 06:00:10,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 06:00:10,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 06:00:10,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 06:00:10,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 06:00:10,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 06:00:10,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2020-10-20 06:00:10,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2020-10-20 06:00:10,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-10-20 06:00:10,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-10-20 06:00:10,520 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-10-20 06:00:10,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-10-20 06:00:10,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-10-20 06:00:10,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-10-20 06:00:10,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-10-20 06:00:10,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-10-20 06:00:10,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2020-10-20 06:00:10,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2020-10-20 06:00:10,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2020-10-20 06:00:10,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2020-10-20 06:00:10,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2020-10-20 06:00:10,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2020-10-20 06:00:10,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2020-10-20 06:00:10,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2020-10-20 06:00:10,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2020-10-20 06:00:10,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2020-10-20 06:00:10,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2020-10-20 06:00:10,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2020-10-20 06:00:10,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2020-10-20 06:00:10,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2020-10-20 06:00:10,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2020-10-20 06:00:10,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2020-10-20 06:00:10,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2020-10-20 06:00:10,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2020-10-20 06:00:10,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2020-10-20 06:00:10,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2020-10-20 06:00:10,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2020-10-20 06:00:10,526 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-10-20 06:00:10,527 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2020-10-20 06:00:10,527 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2020-10-20 06:00:10,527 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:00:10,527 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-10-20 06:00:10,527 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-20 06:00:10,528 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-20 06:00:10,528 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 06:00:10,528 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 06:00:10,528 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 06:00:10,528 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 06:00:10,529 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 06:00:10,529 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 06:00:10,529 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 06:00:10,529 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 06:00:10,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 06:00:10,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 06:00:10,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 06:00:10,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 06:00:10,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 06:00:10,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 06:00:10,531 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 06:00:10,531 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 06:00:10,531 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 06:00:10,531 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 06:00:10,532 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 06:00:10,532 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 06:00:10,532 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 06:00:10,532 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 06:00:10,532 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 06:00:10,533 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 06:00:10,533 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 06:00:10,533 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 06:00:10,533 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 06:00:10,534 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 06:00:10,534 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 06:00:10,534 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 06:00:10,534 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 06:00:10,534 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 06:00:10,535 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 06:00:10,535 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 06:00:10,535 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 06:00:10,535 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 06:00:10,535 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 06:00:10,536 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 06:00:10,536 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 06:00:10,536 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 06:00:10,536 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 06:00:10,536 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 06:00:10,537 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 06:00:10,537 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 06:00:10,537 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 06:00:10,537 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 06:00:10,537 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 06:00:10,538 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 06:00:10,538 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 06:00:10,538 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 06:00:10,538 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 06:00:10,538 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 06:00:10,539 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 06:00:10,539 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 06:00:10,539 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 06:00:10,539 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 06:00:10,539 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 06:00:10,540 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 06:00:10,540 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 06:00:10,540 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 06:00:10,540 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 06:00:10,540 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 06:00:10,541 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 06:00:10,541 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:00:10,541 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 06:00:10,541 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 06:00:10,541 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 06:00:10,542 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 06:00:10,542 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 06:00:10,542 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 06:00:10,542 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 06:00:10,543 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 06:00:10,543 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 06:00:10,543 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 06:00:10,543 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 06:00:10,543 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 06:00:10,544 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 06:00:10,544 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 06:00:10,544 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 06:00:10,544 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 06:00:10,545 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 06:00:10,545 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 06:00:10,545 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 06:00:10,545 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 06:00:10,545 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 06:00:10,546 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 06:00:10,546 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 06:00:10,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 06:00:10,546 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 06:00:10,546 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 06:00:10,547 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 06:00:10,547 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 06:00:10,547 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 06:00:10,547 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 06:00:10,547 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 06:00:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 06:00:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 06:00:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 06:00:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 06:00:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 06:00:10,549 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 06:00:10,549 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 06:00:10,549 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 06:00:10,549 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 06:00:10,549 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 06:00:10,550 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 06:00:10,550 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 06:00:10,550 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-10-20 06:00:10,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:00:10,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2020-10-20 06:00:10,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2020-10-20 06:00:10,551 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-20 06:00:10,551 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-10-20 06:00:10,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-10-20 06:00:10,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:00:10,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-10-20 06:00:10,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-20 06:00:10,552 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-10-20 06:00:10,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 06:00:10,552 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-10-20 06:00:10,553 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-10-20 06:00:10,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-10-20 06:00:10,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 06:00:10,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-10-20 06:00:10,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-10-20 06:00:10,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2020-10-20 06:00:10,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2020-10-20 06:00:10,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-20 06:00:10,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2020-10-20 06:00:10,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:00:10,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2020-10-20 06:00:10,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2020-10-20 06:00:10,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2020-10-20 06:00:10,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2020-10-20 06:00:10,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2020-10-20 06:00:10,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 06:00:10,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 06:00:10,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2020-10-20 06:00:10,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2020-10-20 06:00:10,557 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-10-20 06:00:10,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2020-10-20 06:00:10,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2020-10-20 06:00:10,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2020-10-20 06:00:10,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2020-10-20 06:00:10,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2020-10-20 06:00:10,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2020-10-20 06:00:10,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2020-10-20 06:00:10,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2020-10-20 06:00:10,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2020-10-20 06:00:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2020-10-20 06:00:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2020-10-20 06:00:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-10-20 06:00:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-10-20 06:00:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-10-20 06:00:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2020-10-20 06:00:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:00:10,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:00:10,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:00:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-20 06:00:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:00:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 06:00:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-20 06:00:10,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-20 06:00:10,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2020-10-20 06:00:10,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2020-10-20 06:00:11,199 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-20 06:00:11,565 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-20 06:00:11,863 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:00:11,864 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-20 06:00:11,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:00:11 BoogieIcfgContainer [2020-10-20 06:00:11,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:00:11,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:00:11,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:00:11,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:00:11,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:00:09" (1/3) ... [2020-10-20 06:00:11,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d0884a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:00:11, skipping insertion in model container [2020-10-20 06:00:11,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:00:10" (2/3) ... [2020-10-20 06:00:11,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d0884a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:00:11, skipping insertion in model container [2020-10-20 06:00:11,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:00:11" (3/3) ... [2020-10-20 06:00:11,876 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test1-3.i [2020-10-20 06:00:11,888 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:00:11,897 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 74 error locations. [2020-10-20 06:00:11,910 INFO L253 AbstractCegarLoop]: Starting to check reachability of 74 error locations. [2020-10-20 06:00:11,927 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:00:11,928 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:00:11,928 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:00:11,928 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:00:11,928 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:00:11,928 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:00:11,928 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:00:11,929 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:00:11,946 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2020-10-20 06:00:11,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 06:00:11,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:11,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:11,958 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:11,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:11,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1839111754, now seen corresponding path program 1 times [2020-10-20 06:00:11,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:00:11,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444901027] [2020-10-20 06:00:11,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-20 06:00:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:12,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:00:12,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:12,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:00:12,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:00:12,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:00:12,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444901027] [2020-10-20 06:00:12,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:00:12,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-20 06:00:12,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743579242] [2020-10-20 06:00:12,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:00:12,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:00:12,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:00:12,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:00:12,368 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 5 states. [2020-10-20 06:00:12,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:12,432 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-10-20 06:00:12,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:00:12,435 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-20 06:00:12,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:12,445 INFO L225 Difference]: With dead ends: 24 [2020-10-20 06:00:12,446 INFO L226 Difference]: Without dead ends: 21 [2020-10-20 06:00:12,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:00:12,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-20 06:00:12,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-20 06:00:12,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-20 06:00:12,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-10-20 06:00:12,488 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 13 [2020-10-20 06:00:12,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:12,489 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-10-20 06:00:12,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:00:12,489 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-10-20 06:00:12,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:00:12,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:12,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:12,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 06:00:12,713 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:12,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:12,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1177889137, now seen corresponding path program 1 times [2020-10-20 06:00:12,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:00:12,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255731386] [2020-10-20 06:00:12,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-20 06:00:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:12,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:00:12,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:12,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:00:12,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:00:13,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:00:13,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255731386] [2020-10-20 06:00:13,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:00:13,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2020-10-20 06:00:13,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838947657] [2020-10-20 06:00:13,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:00:13,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:00:13,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:00:13,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:00:13,085 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 9 states. [2020-10-20 06:00:13,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:13,204 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-10-20 06:00:13,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:00:13,205 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-10-20 06:00:13,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:13,208 INFO L225 Difference]: With dead ends: 28 [2020-10-20 06:00:13,209 INFO L226 Difference]: Without dead ends: 28 [2020-10-20 06:00:13,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:00:13,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-20 06:00:13,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 20. [2020-10-20 06:00:13,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-20 06:00:13,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-10-20 06:00:13,215 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 14 [2020-10-20 06:00:13,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:13,216 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-10-20 06:00:13,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:00:13,216 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-10-20 06:00:13,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 06:00:13,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:13,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:13,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 06:00:13,437 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:13,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:13,438 INFO L82 PathProgramCache]: Analyzing trace with hash 2140142808, now seen corresponding path program 1 times [2020-10-20 06:00:13,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:00:13,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243662368] [2020-10-20 06:00:13,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-20 06:00:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:13,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:00:13,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:13,783 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:00:13,783 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:00:13,787 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:00:13,787 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:00:13,787 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:00:13,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:00:13,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:00:13,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:00:13,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243662368] [2020-10-20 06:00:13,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:00:13,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-20 06:00:13,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248458519] [2020-10-20 06:00:13,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:00:13,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:00:13,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:00:13,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:00:13,872 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 5 states. [2020-10-20 06:00:13,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:13,922 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-10-20 06:00:13,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:00:13,922 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-20 06:00:13,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:13,923 INFO L225 Difference]: With dead ends: 26 [2020-10-20 06:00:13,923 INFO L226 Difference]: Without dead ends: 26 [2020-10-20 06:00:13,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:00:13,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-20 06:00:13,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-20 06:00:13,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-20 06:00:13,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-10-20 06:00:13,929 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 15 [2020-10-20 06:00:13,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:13,929 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-10-20 06:00:13,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:00:13,930 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-10-20 06:00:13,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 06:00:13,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:13,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:14,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 06:00:14,147 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:14,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:14,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1267320807, now seen corresponding path program 1 times [2020-10-20 06:00:14,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:00:14,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1809027729] [2020-10-20 06:00:14,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-20 06:00:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:14,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:00:14,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:14,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:00:14,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:00:14,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:00:14,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1809027729] [2020-10-20 06:00:14,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:00:14,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-20 06:00:14,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755996862] [2020-10-20 06:00:14,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:00:14,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:00:14,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:00:14,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:00:14,319 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 5 states. [2020-10-20 06:00:14,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:14,341 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-10-20 06:00:14,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:00:14,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-20 06:00:14,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:14,343 INFO L225 Difference]: With dead ends: 27 [2020-10-20 06:00:14,343 INFO L226 Difference]: Without dead ends: 27 [2020-10-20 06:00:14,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:00:14,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-20 06:00:14,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2020-10-20 06:00:14,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-20 06:00:14,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-20 06:00:14,348 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 15 [2020-10-20 06:00:14,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:14,349 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-20 06:00:14,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:00:14,349 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-20 06:00:14,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 06:00:14,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:14,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:14,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 06:00:14,562 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:14,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:14,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1794725483, now seen corresponding path program 1 times [2020-10-20 06:00:14,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:00:14,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164581338] [2020-10-20 06:00:14,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-20 06:00:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:14,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 06:00:14,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:16,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:00:16,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:00:21,018 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_old(#valid)_BEFORE_CALL_3| (Array (_ BitVec 32) (_ BitVec 1)))) (or (= |v_old(#valid)_BEFORE_CALL_3| |c_#valid|) (exists ((v_entry_point_~p~0.base_12 (_ BitVec 32))) (and (not (= |v_old(#valid)_BEFORE_CALL_3| (store |c_old(#valid)| v_entry_point_~p~0.base_12 (_ bv0 1)))) (= (select |c_old(#valid)| v_entry_point_~p~0.base_12) (_ bv0 1)))))) is different from false [2020-10-20 06:00:23,166 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_old(#valid)_BEFORE_CALL_3| (Array (_ BitVec 32) (_ BitVec 1)))) (or (= |v_old(#valid)_BEFORE_CALL_3| (store |c_#valid| |c_entry_point_#t~ret38.base| (_ bv0 1))) (exists ((v_entry_point_~p~0.base_12 (_ BitVec 32))) (and (not (= |v_old(#valid)_BEFORE_CALL_3| (store |c_old(#valid)| v_entry_point_~p~0.base_12 (_ bv0 1)))) (= (select |c_old(#valid)| v_entry_point_~p~0.base_12) (_ bv0 1)))))) is different from false [2020-10-20 06:00:23,265 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_old(#valid)_BEFORE_CALL_3| (Array (_ BitVec 32) (_ BitVec 1))) (|v_entry_point_#t~ret38.base_28| (_ BitVec 32))) (or (not (= (select |c_#valid| |v_entry_point_#t~ret38.base_28|) (_ bv0 1))) (= |v_old(#valid)_BEFORE_CALL_3| (store |c_#valid| |v_entry_point_#t~ret38.base_28| (_ bv0 1))) (exists ((v_entry_point_~p~0.base_12 (_ BitVec 32))) (and (not (= |v_old(#valid)_BEFORE_CALL_3| (store |c_old(#valid)| v_entry_point_~p~0.base_12 (_ bv0 1)))) (= (select |c_old(#valid)| v_entry_point_~p~0.base_12) (_ bv0 1)))))) is different from false [2020-10-20 06:00:23,295 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-10-20 06:00:23,307 INFO L441 ElimStorePlain]: Different costs {0=[|v_old(#valid)_BEFORE_CALL_3|], 5=[|v_old(#valid)_BEFORE_CALL_4|]} [2020-10-20 06:00:23,327 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_old(#valid)_BEFORE_CALL_3| (Array (_ BitVec 32) (_ BitVec 1))) (|v_old(#valid)_BEFORE_CALL_4| (Array (_ BitVec 32) (_ BitVec 1)))) (or (exists ((v_prenex_1 (Array (_ BitVec 32) (_ BitVec 1))) (|v_entry_point_#t~ret38.base_28| (_ BitVec 32))) (and (not (= (store |c_old(#valid)| |v_entry_point_#t~ret38.base_28| (_ bv0 1)) v_prenex_1)) (= (_ bv0 1) (select |c_old(#valid)| |v_entry_point_#t~ret38.base_28|)) (forall ((v_entry_point_~p~0.base_12 (_ BitVec 32))) (or (= (store |v_old(#valid)_BEFORE_CALL_4| v_entry_point_~p~0.base_12 (_ bv0 1)) v_prenex_1) (not (= (select |v_old(#valid)_BEFORE_CALL_4| v_entry_point_~p~0.base_12) (_ bv0 1))))))) (exists ((v_prenex_2 (_ BitVec 32))) (and (not (= |v_old(#valid)_BEFORE_CALL_3| (store |v_old(#valid)_BEFORE_CALL_4| v_prenex_2 (_ bv0 1)))) (= (select |v_old(#valid)_BEFORE_CALL_4| v_prenex_2) (_ bv0 1)))) (= (store |c_#valid| |c_ldv_malloc_#res.base| (_ bv0 1)) |v_old(#valid)_BEFORE_CALL_3|))) is different from false [2020-10-20 06:00:23,333 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_old(#valid)_BEFORE_CALL_3| (Array (_ BitVec 32) (_ BitVec 1))) (|v_old(#valid)_BEFORE_CALL_4| (Array (_ BitVec 32) (_ BitVec 1)))) (or (exists ((v_prenex_1 (Array (_ BitVec 32) (_ BitVec 1))) (|v_entry_point_#t~ret38.base_28| (_ BitVec 32))) (and (not (= (store |c_old(#valid)| |v_entry_point_#t~ret38.base_28| (_ bv0 1)) v_prenex_1)) (= (_ bv0 1) (select |c_old(#valid)| |v_entry_point_#t~ret38.base_28|)) (forall ((v_entry_point_~p~0.base_12 (_ BitVec 32))) (or (= (store |v_old(#valid)_BEFORE_CALL_4| v_entry_point_~p~0.base_12 (_ bv0 1)) v_prenex_1) (not (= (select |v_old(#valid)_BEFORE_CALL_4| v_entry_point_~p~0.base_12) (_ bv0 1))))))) (exists ((v_prenex_2 (_ BitVec 32))) (and (not (= |v_old(#valid)_BEFORE_CALL_3| (store |v_old(#valid)_BEFORE_CALL_4| v_prenex_2 (_ bv0 1)))) (= (select |v_old(#valid)_BEFORE_CALL_4| v_prenex_2) (_ bv0 1)))) (= (store |c_#valid| |c_ldv_malloc_#res.base| (_ bv0 1)) |v_old(#valid)_BEFORE_CALL_3|))) is different from true [2020-10-20 06:00:23,345 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-10-20 06:00:23,351 INFO L441 ElimStorePlain]: Different costs {0=[|v_old(#valid)_BEFORE_CALL_3|], 5=[|v_old(#valid)_BEFORE_CALL_4|]} [2020-10-20 06:00:23,376 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-10-20 06:00:23,383 INFO L441 ElimStorePlain]: Different costs {0=[|v_old(#valid)_BEFORE_CALL_3|], 5=[|v_old(#valid)_BEFORE_CALL_4|]} [2020-10-20 06:00:23,397 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ldv_malloc_#res.base_26| (_ BitVec 32)) (|v_old(#valid)_BEFORE_CALL_3| (Array (_ BitVec 32) (_ BitVec 1))) (|v_old(#valid)_BEFORE_CALL_4| (Array (_ BitVec 32) (_ BitVec 1)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ldv_malloc_#res.base_26|))) (exists ((v_prenex_1 (Array (_ BitVec 32) (_ BitVec 1))) (|v_entry_point_#t~ret38.base_28| (_ BitVec 32))) (and (not (= (store |c_old(#valid)| |v_entry_point_#t~ret38.base_28| (_ bv0 1)) v_prenex_1)) (= (_ bv0 1) (select |c_old(#valid)| |v_entry_point_#t~ret38.base_28|)) (forall ((v_entry_point_~p~0.base_12 (_ BitVec 32))) (or (= (store |v_old(#valid)_BEFORE_CALL_4| v_entry_point_~p~0.base_12 (_ bv0 1)) v_prenex_1) (not (= (select |v_old(#valid)_BEFORE_CALL_4| v_entry_point_~p~0.base_12) (_ bv0 1))))))) (exists ((v_prenex_2 (_ BitVec 32))) (and (not (= |v_old(#valid)_BEFORE_CALL_3| (store |v_old(#valid)_BEFORE_CALL_4| v_prenex_2 (_ bv0 1)))) (= (select |v_old(#valid)_BEFORE_CALL_4| v_prenex_2) (_ bv0 1)))) (= |v_old(#valid)_BEFORE_CALL_3| (store |c_#valid| |v_ldv_malloc_#res.base_26| (_ bv0 1))))) is different from true [2020-10-20 06:00:23,410 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-10-20 06:00:23,417 INFO L441 ElimStorePlain]: Different costs {0=[|v_old(#valid)_BEFORE_CALL_3|], 5=[|v_old(#valid)_BEFORE_CALL_4|]} [2020-10-20 06:00:23,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:00:23,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164581338] [2020-10-20 06:00:23,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:00:23,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 9] imperfect sequences [] total 13 [2020-10-20 06:00:23,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794807167] [2020-10-20 06:00:23,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 06:00:23,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:00:23,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 06:00:23,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=50, Unknown=13, NotChecked=90, Total=182 [2020-10-20 06:00:23,434 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 14 states. [2020-10-20 06:00:35,916 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_#valid| (store |c_old(#valid)| |c_ldv_malloc_#res.base| (_ bv1 1))) (forall ((|v_old(#valid)_BEFORE_CALL_3| (Array (_ BitVec 32) (_ BitVec 1))) (|v_old(#valid)_BEFORE_CALL_4| (Array (_ BitVec 32) (_ BitVec 1)))) (or (exists ((v_prenex_1 (Array (_ BitVec 32) (_ BitVec 1))) (|v_entry_point_#t~ret38.base_28| (_ BitVec 32))) (and (not (= (store |c_old(#valid)| |v_entry_point_#t~ret38.base_28| (_ bv0 1)) v_prenex_1)) (= (_ bv0 1) (select |c_old(#valid)| |v_entry_point_#t~ret38.base_28|)) (forall ((v_entry_point_~p~0.base_12 (_ BitVec 32))) (or (= (store |v_old(#valid)_BEFORE_CALL_4| v_entry_point_~p~0.base_12 (_ bv0 1)) v_prenex_1) (not (= (select |v_old(#valid)_BEFORE_CALL_4| v_entry_point_~p~0.base_12) (_ bv0 1))))))) (exists ((v_prenex_2 (_ BitVec 32))) (and (not (= |v_old(#valid)_BEFORE_CALL_3| (store |v_old(#valid)_BEFORE_CALL_4| v_prenex_2 (_ bv0 1)))) (= (select |v_old(#valid)_BEFORE_CALL_4| v_prenex_2) (_ bv0 1)))) (= (store |c_#valid| |c_ldv_malloc_#res.base| (_ bv0 1)) |v_old(#valid)_BEFORE_CALL_3|))) (= (select |c_old(#valid)| |c_ldv_malloc_#res.base|) (_ bv0 1))) is different from false [2020-10-20 06:00:51,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:51,705 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2020-10-20 06:00:51,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:00:51,706 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 18 [2020-10-20 06:00:51,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:51,707 INFO L225 Difference]: With dead ends: 28 [2020-10-20 06:00:51,707 INFO L226 Difference]: Without dead ends: 19 [2020-10-20 06:00:51,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 6 IntricatePredicates, 1 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=48, Invalid=79, Unknown=29, NotChecked=150, Total=306 [2020-10-20 06:00:51,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-20 06:00:51,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-20 06:00:51,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-20 06:00:51,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2020-10-20 06:00:51,712 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 18 [2020-10-20 06:00:51,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:51,714 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2020-10-20 06:00:51,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 06:00:51,715 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2020-10-20 06:00:51,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 06:00:51,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:51,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:51,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-20 06:00:51,925 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:51,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:51,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1991238988, now seen corresponding path program 1 times [2020-10-20 06:00:51,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:00:51,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012158622] [2020-10-20 06:00:51,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-20 06:00:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:52,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 06:00:52,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:52,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:00:52,046 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-10-20 06:00:52,046 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:00:52,058 INFO L625 ElimStorePlain]: treesize reduction 4, result has 73.3 percent of original size [2020-10-20 06:00:52,059 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:00:52,059 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2020-10-20 06:00:52,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:00:52,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:00:52,292 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2020-10-20 06:00:52,292 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:00:52,295 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:00:52,295 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:00:52,295 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:9 [2020-10-20 06:00:52,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:00:52,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012158622] [2020-10-20 06:00:52,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:00:52,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [] total 14 [2020-10-20 06:00:52,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426824746] [2020-10-20 06:00:52,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-20 06:00:52,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:00:52,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-20 06:00:52,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-20 06:00:52,368 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand 15 states. [2020-10-20 06:00:52,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:52,571 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2020-10-20 06:00:52,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:00:52,572 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-10-20 06:00:52,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:52,573 INFO L225 Difference]: With dead ends: 18 [2020-10-20 06:00:52,573 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:00:52,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-10-20 06:00:52,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:00:52,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:00:52,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:00:52,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:00:52,576 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-20 06:00:52,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:52,576 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:00:52,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-20 06:00:52,576 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:00:52,576 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:00:52,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-20 06:00:52,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:00:52 BoogieIcfgContainer [2020-10-20 06:00:52,792 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:00:52,793 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:00:52,793 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:00:52,793 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:00:52,794 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:00:11" (3/4) ... [2020-10-20 06:00:52,797 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:00:52,805 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_submit_msg [2020-10-20 06:00:52,806 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 06:00:52,806 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kobject_create [2020-10-20 06:00:52,806 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kobject_del [2020-10-20 06:00:52,806 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_positive [2020-10-20 06:00:52,806 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __ldv_list_del [2020-10-20 06:00:52,806 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-10-20 06:00:52,806 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-10-20 06:00:52,806 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_msg_free [2020-10-20 06:00:52,806 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-20 06:00:52,807 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_list_del [2020-10-20 06:00:52,807 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kref_get [2020-10-20 06:00:52,807 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kobject_put [2020-10-20 06:00:52,807 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-10-20 06:00:52,807 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kobject_init [2020-10-20 06:00:52,807 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ##fun~$Pointer$~TO~VOID [2020-10-20 06:00:52,807 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_atomic_sub_return [2020-10-20 06:00:52,807 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_list_add_tail [2020-10-20 06:00:52,807 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-10-20 06:00:52,807 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_nonpositive [2020-10-20 06:00:52,808 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.meminit [2020-10-20 06:00:52,808 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure entry_point [2020-10-20 06:00:52,808 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_msg_alloc [2020-10-20 06:00:52,808 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kobject_init_internal [2020-10-20 06:00:52,808 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kref_init [2020-10-20 06:00:52,808 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_list_add [2020-10-20 06:00:52,808 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_destroy_msgs [2020-10-20 06:00:52,808 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_msg_fill [2020-10-20 06:00:52,808 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kref_sub [2020-10-20 06:00:52,809 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memset [2020-10-20 06:00:52,809 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_atomic_add_return [2020-10-20 06:00:52,809 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2020-10-20 06:00:52,809 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kobject_release [2020-10-20 06:00:52,809 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2020-10-20 06:00:52,809 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-10-20 06:00:52,809 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kobject_cleanup [2020-10-20 06:00:52,809 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memcpy [2020-10-20 06:00:52,809 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure LDV_INIT_LIST_HEAD [2020-10-20 06:00:52,809 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __ldv_list_add [2020-10-20 06:00:52,810 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-20 06:00:52,810 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2020-10-20 06:00:52,810 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_dev_set_drvdata [2020-10-20 06:00:52,810 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_zalloc [2020-10-20 06:00:52,810 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kref_put [2020-10-20 06:00:52,810 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kobject_get [2020-10-20 06:00:52,811 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_dev_get_drvdata [2020-10-20 06:00:52,820 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2020-10-20 06:00:52,820 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-20 06:00:52,821 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 06:00:52,821 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 06:00:52,821 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:00:52,895 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:00:52,895 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:00:52,896 INFO L168 Benchmark]: Toolchain (without parser) took 43470.47 ms. Allocated memory was 34.1 MB in the beginning and 86.0 MB in the end (delta: 51.9 MB). Free memory was 9.6 MB in the beginning and 34.2 MB in the end (delta: -24.7 MB). Peak memory consumption was 27.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:00:52,897 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 33.0 MB. Free memory was 17.8 MB in the beginning and 17.8 MB in the end (delta: 41.6 kB). Peak memory consumption was 41.6 kB. Max. memory is 14.3 GB. [2020-10-20 06:00:52,897 INFO L168 Benchmark]: CACSL2BoogieTranslator took 912.33 ms. Allocated memory was 34.1 MB in the beginning and 44.6 MB in the end (delta: 10.5 MB). Free memory was 8.7 MB in the beginning and 12.9 MB in the end (delta: -4.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:00:52,898 INFO L168 Benchmark]: Boogie Preprocessor took 110.14 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 12.9 MB in the beginning and 25.7 MB in the end (delta: -12.8 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:00:52,898 INFO L168 Benchmark]: RCFGBuilder took 1410.71 ms. Allocated memory was 46.7 MB in the beginning and 54.0 MB in the end (delta: 7.3 MB). Free memory was 25.7 MB in the beginning and 17.2 MB in the end (delta: 8.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:00:52,898 INFO L168 Benchmark]: TraceAbstraction took 40924.69 ms. Allocated memory was 54.0 MB in the beginning and 86.0 MB in the end (delta: 32.0 MB). Free memory was 16.8 MB in the beginning and 41.4 MB in the end (delta: -24.6 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:00:52,899 INFO L168 Benchmark]: Witness Printer took 102.15 ms. Allocated memory is still 86.0 MB. Free memory was 41.4 MB in the beginning and 34.2 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:00:52,901 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 33.0 MB. Free memory was 17.8 MB in the beginning and 17.8 MB in the end (delta: 41.6 kB). Peak memory consumption was 41.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 912.33 ms. Allocated memory was 34.1 MB in the beginning and 44.6 MB in the end (delta: 10.5 MB). Free memory was 8.7 MB in the beginning and 12.9 MB in the end (delta: -4.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 110.14 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 12.9 MB in the beginning and 25.7 MB in the end (delta: -12.8 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1410.71 ms. Allocated memory was 46.7 MB in the beginning and 54.0 MB in the end (delta: 7.3 MB). Free memory was 25.7 MB in the beginning and 17.2 MB in the end (delta: 8.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 40924.69 ms. Allocated memory was 54.0 MB in the beginning and 86.0 MB in the end (delta: 32.0 MB). Free memory was 16.8 MB in the beginning and 41.4 MB in the end (delta: -24.6 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. * Witness Printer took 102.15 ms. Allocated memory is still 86.0 MB. Free memory was 41.4 MB in the beginning and 34.2 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 682]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 682]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 559]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 559]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 744]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 744]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 607]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 607]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 607]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 607]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 607]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 607]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 587]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 588]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 587]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 588]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 587]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 587]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 658]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 658]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 660]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 660]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 554]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 554]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 555]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 555]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 700]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 702]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 702]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 702]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 699]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 700]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 699]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 700]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 594]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 594]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 593]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 593]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 593]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 594]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 593]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 593]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 761]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 540]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 540]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 567]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 567]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 567]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 567]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 549]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 547]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 547]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 550]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 550]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 548]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 548]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 549]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 623]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 623]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 666]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 666]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 668]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 668]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 563]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 563]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 619]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 619]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 759]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 759]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 759]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 578]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 578]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 74 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 47 procedures, 335 locations, 74 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 40.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 28.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 104 SDtfs, 51 SDslu, 256 SDs, 0 SdLazy, 227 SolverSat, 27 SolverUnsat, 19 SolverUnknown, 0 SolverNotchecked, 23.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 189 GetRequests, 137 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 6 IntricatePredicates, 1 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 13.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 174 ConstructedInterpolants, 20 QuantifiedInterpolants, 16387 SizeOfPredicates, 9 NumberOfNonLiveVariables, 391 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...