./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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_test6_2.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 098cac8041f427989b0fcb649de06793770da06a ............................................................................................................................. 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 -Xmx12G -Xms1G -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_test6_2.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 098cac8041f427989b0fcb649de06793770da06a ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:10:43,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:10:43,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:10:43,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:10:43,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:10:43,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:10:43,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:10:43,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:10:43,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:10:43,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:10:43,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:10:43,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:10:43,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:10:43,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:10:43,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:10:43,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:10:43,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:10:43,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:10:43,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:10:43,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:10:43,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:10:43,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:10:43,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:10:43,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:10:43,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:10:43,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:10:43,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:10:43,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:10:43,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:10:43,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:10:43,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:10:43,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:10:43,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:10:43,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:10:43,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:10:43,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:10:43,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:10:43,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:10:43,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:10:43,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:10:43,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:10:43,519 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:10:43,543 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:10:43,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:10:43,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:10:43,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:10:43,547 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:10:43,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:10:43,548 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:10:43,550 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:10:43,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:10:43,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:10:43,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:10:43,551 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:10:43,551 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:10:43,552 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:10:43,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:10:43,553 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:10:43,553 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:10:43,554 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:10:43,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:10:43,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:10:43,555 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:10:43,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:10:43,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:10:43,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:10:43,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:10:43,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:10:43,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:10:43,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:10:43,558 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 -> 098cac8041f427989b0fcb649de06793770da06a [2020-10-19 18:10:43,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:10:43,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:10:43,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:10:43,935 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:10:43,935 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:10:43,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2020-10-19 18:10:44,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fae02965f/959c635dfeaa4f449e3939aa694f6d12/FLAG6a2652813 [2020-10-19 18:10:44,588 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:10:44,590 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2020-10-19 18:10:44,615 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fae02965f/959c635dfeaa4f449e3939aa694f6d12/FLAG6a2652813 [2020-10-19 18:10:44,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fae02965f/959c635dfeaa4f449e3939aa694f6d12 [2020-10-19 18:10:44,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:10:44,838 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:10:44,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:10:44,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:10:44,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:10:44,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:10:44" (1/1) ... [2020-10-19 18:10:44,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a6428ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:10:44, skipping insertion in model container [2020-10-19 18:10:44,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:10:44" (1/1) ... [2020-10-19 18:10:44,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:10:44,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:10:45,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:10:45,449 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) [2020-10-19 18:10:45,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@346afe1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:10:45, skipping insertion in model container [2020-10-19 18:10:45,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:10:45,451 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2020-10-19 18:10:45,454 INFO L168 Benchmark]: Toolchain (without parser) took 618.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -151.6 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:10:45,455 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:10:45,456 INFO L168 Benchmark]: CACSL2BoogieTranslator took 611.40 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -151.6 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:10:45,459 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 611.40 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -151.6 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 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 0.1.25-906a4fb [2020-10-19 18:10:47,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:10:47,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:10:47,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:10:47,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:10:47,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:10:47,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:10:47,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:10:47,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:10:47,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:10:47,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:10:47,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:10:47,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:10:47,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:10:47,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:10:47,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:10:47,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:10:47,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:10:47,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:10:47,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:10:47,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:10:47,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:10:47,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:10:47,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:10:47,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:10:47,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:10:47,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:10:47,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:10:47,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:10:47,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:10:47,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:10:47,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:10:47,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:10:47,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:10:47,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:10:47,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:10:47,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:10:47,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:10:47,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:10:47,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:10:47,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:10:47,228 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-19 18:10:47,273 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:10:47,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:10:47,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:10:47,276 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:10:47,276 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:10:47,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:10:47,276 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:10:47,277 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:10:47,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:10:47,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:10:47,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:10:47,279 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:10:47,279 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:10:47,279 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:10:47,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:10:47,280 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:10:47,280 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 18:10:47,281 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 18:10:47,281 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:10:47,282 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:10:47,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:10:47,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:10:47,283 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:10:47,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:10:47,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:10:47,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:10:47,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:10:47,284 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 18:10:47,284 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 18:10:47,285 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:10:47,285 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 18:10:47,285 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 -> 098cac8041f427989b0fcb649de06793770da06a [2020-10-19 18:10:47,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:10:47,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:10:47,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:10:47,620 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:10:47,620 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:10:47,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2020-10-19 18:10:47,673 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef593a8d0/dbcbb72c793f41ca93c16a62109cbd0d/FLAG4d283431f [2020-10-19 18:10:48,212 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:10:48,213 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2020-10-19 18:10:48,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef593a8d0/dbcbb72c793f41ca93c16a62109cbd0d/FLAG4d283431f [2020-10-19 18:10:48,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef593a8d0/dbcbb72c793f41ca93c16a62109cbd0d [2020-10-19 18:10:48,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:10:48,435 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:10:48,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:10:48,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:10:48,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:10:48,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:10:48" (1/1) ... [2020-10-19 18:10:48,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@778ab746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:10:48, skipping insertion in model container [2020-10-19 18:10:48,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:10:48" (1/1) ... [2020-10-19 18:10:48,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:10:48,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:10:48,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:10:49,018 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-10-19 18:10:49,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:10:49,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:10:49,121 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:10:49,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:10:49,289 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:10:49,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:10:49 WrapperNode [2020-10-19 18:10:49,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:10:49,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:10:49,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:10:49,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:10:49,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:10:49" (1/1) ... [2020-10-19 18:10:49,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:10:49" (1/1) ... [2020-10-19 18:10:49,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:10:49" (1/1) ... [2020-10-19 18:10:49,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:10:49" (1/1) ... [2020-10-19 18:10:49,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:10:49" (1/1) ... [2020-10-19 18:10:49,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:10:49" (1/1) ... [2020-10-19 18:10:49,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:10:49" (1/1) ... [2020-10-19 18:10:49,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:10:49,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:10:49,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:10:49,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:10:49,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:10:49" (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 [2020-10-19 18:10:49,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:10:49,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:10:49,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-10-19 18:10:49,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 18:10:49,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:10:49,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:10:49,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 18:10:49,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 18:10:49,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 18:10:49,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2020-10-19 18:10:49,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2020-10-19 18:10:49,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-10-19 18:10:49,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-10-19 18:10:49,520 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-10-19 18:10:49,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-10-19 18:10:49,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-10-19 18:10:49,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-10-19 18:10:49,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-10-19 18:10:49,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-10-19 18:10:49,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2020-10-19 18:10:49,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2020-10-19 18:10:49,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2020-10-19 18:10:49,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2020-10-19 18:10:49,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2020-10-19 18:10:49,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2020-10-19 18:10:49,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2020-10-19 18:10:49,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2020-10-19 18:10:49,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2020-10-19 18:10:49,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2020-10-19 18:10:49,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2020-10-19 18:10:49,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2020-10-19 18:10:49,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2020-10-19 18:10:49,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2020-10-19 18:10:49,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2020-10-19 18:10:49,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2020-10-19 18:10:49,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2020-10-19 18:10:49,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2020-10-19 18:10:49,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2020-10-19 18:10:49,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2020-10-19 18:10:49,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2020-10-19 18:10:49,529 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-10-19 18:10:49,529 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2020-10-19 18:10:49,531 INFO L138 BoogieDeclarations]: Found implementation of procedure f6 [2020-10-19 18:10:49,531 INFO L138 BoogieDeclarations]: Found implementation of procedure g6 [2020-10-19 18:10:49,532 INFO L138 BoogieDeclarations]: Found implementation of procedure probe3_6 [2020-10-19 18:10:49,532 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_6 [2020-10-19 18:10:49,532 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2020-10-19 18:10:49,532 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:10:49,533 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-10-19 18:10:49,533 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-19 18:10:49,533 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-19 18:10:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:10:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:10:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:10:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:10:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:10:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:10:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:10:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:10:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:10:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:10:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:10:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:10:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:10:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:10:49,538 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:10:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:10:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:10:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:10:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 18:10:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 18:10:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 18:10:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:10:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:10:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:10:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:10:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:10:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:10:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:10:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:10:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:10:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:10:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:10:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:10:49,545 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:10:49,545 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:10:49,545 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:10:49,545 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:10:49,545 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:10:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:10:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:10:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:10:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:10:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:10:49,547 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:10:49,547 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:10:49,547 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:10:49,547 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:10:49,547 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:10:49,548 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:10:49,548 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:10:49,548 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:10:49,548 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:10:49,549 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:10:49,549 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:10:49,549 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:10:49,549 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:10:49,549 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:10:49,550 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:10:49,550 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:10:49,550 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:10:49,551 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:10:49,551 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:10:49,552 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:10:49,552 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:10:49,552 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:10:49,552 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:10:49,552 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:10:49,553 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:10:49,553 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:10:49,553 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:10:49,553 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:10:49,553 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:10:49,554 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:10:49,554 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:10:49,555 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:10:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:10:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:10:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:10:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:10:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:10:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:10:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:10:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:10:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:10:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:10:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:10:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:10:49,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:10:49,571 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:10:49,572 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:10:49,572 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:10:49,572 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:10:49,572 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:10:49,572 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:10:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:10:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:10:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:10:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:10:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:10:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:10:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:10:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:10:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:10:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:10:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:10:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:10:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:10:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-10-19 18:10:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:10:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2020-10-19 18:10:49,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2020-10-19 18:10:49,576 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-19 18:10:49,576 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-10-19 18:10:49,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-10-19 18:10:49,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:10:49,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-10-19 18:10:49,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-19 18:10:49,577 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-10-19 18:10:49,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:10:49,579 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-10-19 18:10:49,579 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-10-19 18:10:49,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-10-19 18:10:49,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:10:49,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-10-19 18:10:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-10-19 18:10:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2020-10-19 18:10:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2020-10-19 18:10:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-19 18:10:49,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2020-10-19 18:10:49,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:10:49,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2020-10-19 18:10:49,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2020-10-19 18:10:49,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2020-10-19 18:10:49,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2020-10-19 18:10:49,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2020-10-19 18:10:49,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-19 18:10:49,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-19 18:10:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2020-10-19 18:10:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2020-10-19 18:10:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-10-19 18:10:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2020-10-19 18:10:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2020-10-19 18:10:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2020-10-19 18:10:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2020-10-19 18:10:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2020-10-19 18:10:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2020-10-19 18:10:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2020-10-19 18:10:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2020-10-19 18:10:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2020-10-19 18:10:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2020-10-19 18:10:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2020-10-19 18:10:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-10-19 18:10:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-10-19 18:10:49,586 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-10-19 18:10:49,586 INFO L130 BoogieDeclarations]: Found specification of procedure f6 [2020-10-19 18:10:49,586 INFO L130 BoogieDeclarations]: Found specification of procedure g6 [2020-10-19 18:10:49,586 INFO L130 BoogieDeclarations]: Found specification of procedure probe3_6 [2020-10-19 18:10:49,586 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_6 [2020-10-19 18:10:49,587 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2020-10-19 18:10:49,587 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:10:49,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:10:49,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:10:49,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-19 18:10:49,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:10:49,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 18:10:49,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-19 18:10:49,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-19 18:10:49,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2020-10-19 18:10:49,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2020-10-19 18:10:50,297 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 18:10:50,769 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 18:10:51,173 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:10:51,174 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-19 18:10:51,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:10:51 BoogieIcfgContainer [2020-10-19 18:10:51,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:10:51,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:10:51,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:10:51,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:10:51,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:10:48" (1/3) ... [2020-10-19 18:10:51,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f56a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:10:51, skipping insertion in model container [2020-10-19 18:10:51,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:10:49" (2/3) ... [2020-10-19 18:10:51,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f56a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:10:51, skipping insertion in model container [2020-10-19 18:10:51,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:10:51" (3/3) ... [2020-10-19 18:10:51,187 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6_2.i [2020-10-19 18:10:51,200 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:10:51,209 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 86 error locations. [2020-10-19 18:10:51,225 INFO L253 AbstractCegarLoop]: Starting to check reachability of 86 error locations. [2020-10-19 18:10:51,250 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:10:51,250 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:10:51,250 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:10:51,251 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:10:51,251 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:10:51,251 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:10:51,251 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:10:51,252 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:10:51,273 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2020-10-19 18:10:51,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 18:10:51,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:10:51,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:10:51,286 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, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-19 18:10:51,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:10:51,293 INFO L82 PathProgramCache]: Analyzing trace with hash -2083337596, now seen corresponding path program 1 times [2020-10-19 18:10:51,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:10:51,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203711639] [2020-10-19 18:10:51,308 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 [2020-10-19 18:10:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:10:51,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:10:51,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:10:51,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:10:51,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:10:51,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:10:51,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203711639] [2020-10-19 18:10:51,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:10:51,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-19 18:10:51,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038185693] [2020-10-19 18:10:51,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:10:51,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:10:51,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:10:51,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:10:51,757 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 5 states. [2020-10-19 18:10:51,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:10:51,891 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2020-10-19 18:10:51,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:10:51,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-19 18:10:51,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:10:51,922 INFO L225 Difference]: With dead ends: 94 [2020-10-19 18:10:51,925 INFO L226 Difference]: Without dead ends: 91 [2020-10-19 18:10:51,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:10:51,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-19 18:10:51,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 70. [2020-10-19 18:10:51,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-19 18:10:52,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-10-19 18:10:52,002 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 20 [2020-10-19 18:10:52,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:10:52,003 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-10-19 18:10:52,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:10:52,004 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-10-19 18:10:52,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 18:10:52,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:10:52,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:10:52,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 18:10:52,220 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, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-19 18:10:52,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:10:52,221 INFO L82 PathProgramCache]: Analyzing trace with hash 2015116195, now seen corresponding path program 1 times [2020-10-19 18:10:52,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:10:52,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1842165431] [2020-10-19 18:10:52,225 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 [2020-10-19 18:10:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:10:52,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 18:10:52,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:10:52,463 INFO L350 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-10-19 18:10:52,463 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2020-10-19 18:10:52,464 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:10:52,493 INFO L625 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2020-10-19 18:10:52,500 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-19 18:10:52,504 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. [2020-10-19 18:10:52,505 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2020-10-19 18:10:52,506 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-19 18:10:52,537 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2020-10-19 18:10:52,539 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:10:52,542 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:10:52,542 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:10:52,542 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:3 [2020-10-19 18:10:52,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:10:52,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:10:52,630 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:10:52,639 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2020-10-19 18:10:52,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1842165431] [2020-10-19 18:10:52,642 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-19 18:10:52,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1658820441] [2020-10-19 18:10:52,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 18:10:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:10:52,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 18:10:52,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:10:53,019 INFO L350 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-10-19 18:10:53,020 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2020-10-19 18:10:53,021 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:10:53,046 INFO L625 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2020-10-19 18:10:53,048 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-19 18:10:53,050 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. [2020-10-19 18:10:53,050 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2020-10-19 18:10:53,051 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-19 18:10:53,061 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2020-10-19 18:10:53,063 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:10:53,064 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:10:53,065 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:10:53,065 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:3 [2020-10-19 18:10:53,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:10:53,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:10:53,115 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:10:53,122 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2020-10-19 18:10:53,123 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:10:53,128 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:10:53,129 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:10:53,129 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:16 [2020-10-19 18:10:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:10:53,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:10:53,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-19 18:10:53,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173877488] [2020-10-19 18:10:53,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:10:53,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:10:53,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:10:53,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:10:53,150 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 5 states. [2020-10-19 18:10:53,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:10:53,334 INFO L93 Difference]: Finished difference Result 111 states and 120 transitions. [2020-10-19 18:10:53,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:10:53,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-19 18:10:53,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:10:53,337 INFO L225 Difference]: With dead ends: 111 [2020-10-19 18:10:53,338 INFO L226 Difference]: Without dead ends: 108 [2020-10-19 18:10:53,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:10:53,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-19 18:10:53,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 75. [2020-10-19 18:10:53,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-19 18:10:53,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-10-19 18:10:53,349 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 20 [2020-10-19 18:10:53,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:10:53,349 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-10-19 18:10:53,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:10:53,350 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-10-19 18:10:53,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 18:10:53,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:10:53,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:10:53,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk,3 mathsat -unsat_core_generation=3 [2020-10-19 18:10:53,756 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, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-19 18:10:53,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:10:53,757 INFO L82 PathProgramCache]: Analyzing trace with hash 2015116196, now seen corresponding path program 1 times [2020-10-19 18:10:53,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:10:53,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698368356] [2020-10-19 18:10:53,762 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 [2020-10-19 18:10:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:10:53,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 18:10:53,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:10:53,921 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:10:53,922 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-10-19 18:10:53,922 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:10:53,949 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-10-19 18:10:53,951 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:10:53,951 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-10-19 18:10:53,975 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2020-10-19 18:10:53,977 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:10:53,982 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:10:53,983 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:10:53,983 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:7 [2020-10-19 18:10:54,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:10:54,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:10:54,154 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-19 18:10:54,165 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2020-10-19 18:10:54,166 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:10:54,193 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:10:54,194 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:10:54,194 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:28 [2020-10-19 18:10:54,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:10:54,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698368356] [2020-10-19 18:10:54,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:10:54,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-19 18:10:54,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921941307] [2020-10-19 18:10:54,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:10:54,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:10:54,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:10:54,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:10:54,282 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 6 states. [2020-10-19 18:10:54,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:10:54,627 INFO L93 Difference]: Finished difference Result 125 states and 131 transitions. [2020-10-19 18:10:54,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:10:54,627 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-19 18:10:54,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:10:54,630 INFO L225 Difference]: With dead ends: 125 [2020-10-19 18:10:54,630 INFO L226 Difference]: Without dead ends: 124 [2020-10-19 18:10:54,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:10:54,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-19 18:10:54,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 106. [2020-10-19 18:10:54,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-19 18:10:54,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2020-10-19 18:10:54,651 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 20 [2020-10-19 18:10:54,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:10:54,655 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2020-10-19 18:10:54,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:10:54,655 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2020-10-19 18:10:54,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 18:10:54,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:10:54,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:10:54,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-19 18:10:54,871 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, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-19 18:10:54,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:10:54,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1702507591, now seen corresponding path program 1 times [2020-10-19 18:10:54,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:10:54,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332386999] [2020-10-19 18:10:54,873 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 [2020-10-19 18:10:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:10:54,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:10:55,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:10:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:10:55,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:10:55,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:10:55,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332386999] [2020-10-19 18:10:55,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:10:55,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-19 18:10:55,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489603888] [2020-10-19 18:10:55,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:10:55,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:10:55,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:10:55,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:10:55,078 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand 5 states. [2020-10-19 18:10:55,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:10:55,113 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2020-10-19 18:10:55,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:10:55,115 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-19 18:10:55,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:10:55,117 INFO L225 Difference]: With dead ends: 104 [2020-10-19 18:10:55,117 INFO L226 Difference]: Without dead ends: 104 [2020-10-19 18:10:55,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:10:55,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-19 18:10:55,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-19 18:10:55,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-19 18:10:55,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2020-10-19 18:10:55,128 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 22 [2020-10-19 18:10:55,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:10:55,129 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2020-10-19 18:10:55,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:10:55,129 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2020-10-19 18:10:55,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 18:10:55,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:10:55,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:10:55,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-19 18:10:55,341 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, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-19 18:10:55,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:10:55,342 INFO L82 PathProgramCache]: Analyzing trace with hash -503576158, now seen corresponding path program 1 times [2020-10-19 18:10:55,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:10:55,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259779898] [2020-10-19 18:10:55,344 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 [2020-10-19 18:10:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:10:55,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:10:55,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:10:55,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:10:55,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:10:55,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:10:55,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259779898] [2020-10-19 18:10:55,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:10:55,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-10-19 18:10:55,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058884147] [2020-10-19 18:10:55,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:10:55,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:10:55,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:10:55,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:10:55,571 INFO L87 Difference]: Start difference. First operand 104 states and 123 transitions. Second operand 10 states. [2020-10-19 18:10:55,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:10:55,639 INFO L93 Difference]: Finished difference Result 118 states and 137 transitions. [2020-10-19 18:10:55,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:10:55,641 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-10-19 18:10:55,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:10:55,643 INFO L225 Difference]: With dead ends: 118 [2020-10-19 18:10:55,643 INFO L226 Difference]: Without dead ends: 114 [2020-10-19 18:10:55,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:10:55,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-19 18:10:55,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 108. [2020-10-19 18:10:55,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-19 18:10:55,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 126 transitions. [2020-10-19 18:10:55,655 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 126 transitions. Word has length 22 [2020-10-19 18:10:55,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:10:55,656 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 126 transitions. [2020-10-19 18:10:55,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:10:55,656 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 126 transitions. [2020-10-19 18:10:55,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 18:10:55,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:10:55,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:10:55,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-19 18:10:55,862 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, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-19 18:10:55,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:10:55,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1238127481, now seen corresponding path program 1 times [2020-10-19 18:10:55,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:10:55,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987999628] [2020-10-19 18:10:55,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-19 18:10:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:10:56,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:10:56,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:10:56,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:10:56,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:10:56,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:10:56,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987999628] [2020-10-19 18:10:56,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:10:56,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2020-10-19 18:10:56,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258095691] [2020-10-19 18:10:56,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:10:56,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:10:56,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:10:56,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:10:56,257 INFO L87 Difference]: Start difference. First operand 108 states and 126 transitions. Second operand 10 states. [2020-10-19 18:10:56,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:10:56,572 INFO L93 Difference]: Finished difference Result 118 states and 125 transitions. [2020-10-19 18:10:56,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:10:56,573 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-10-19 18:10:56,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:10:56,574 INFO L225 Difference]: With dead ends: 118 [2020-10-19 18:10:56,574 INFO L226 Difference]: Without dead ends: 118 [2020-10-19 18:10:56,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:10:56,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-19 18:10:56,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2020-10-19 18:10:56,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-19 18:10:56,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2020-10-19 18:10:56,601 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 23 [2020-10-19 18:10:56,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:10:56,602 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2020-10-19 18:10:56,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:10:56,603 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2020-10-19 18:10:56,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 18:10:56,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:10:56,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:10:56,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-19 18:10:56,828 INFO L429 AbstractCegarLoop]: === Iteration 7 === [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, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-19 18:10:56,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:10:56,828 INFO L82 PathProgramCache]: Analyzing trace with hash 272754043, now seen corresponding path program 1 times [2020-10-19 18:10:56,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:10:56,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986786921] [2020-10-19 18:10:56,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-19 18:10:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:10:56,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:10:56,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:10:56,996 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 [2020-10-19 18:10:56,997 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:10:56,999 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:10:56,999 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:10:57,000 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:10:57,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:10:57,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:10:57,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:10:57,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986786921] [2020-10-19 18:10:57,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:10:57,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2020-10-19 18:10:57,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875863427] [2020-10-19 18:10:57,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:10:57,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:10:57,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:10:57,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:10:57,102 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand 6 states. [2020-10-19 18:10:57,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:10:57,277 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2020-10-19 18:10:57,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:10:57,278 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-19 18:10:57,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:10:57,279 INFO L225 Difference]: With dead ends: 108 [2020-10-19 18:10:57,279 INFO L226 Difference]: Without dead ends: 108 [2020-10-19 18:10:57,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:10:57,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-19 18:10:57,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2020-10-19 18:10:57,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-19 18:10:57,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2020-10-19 18:10:57,286 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 24 [2020-10-19 18:10:57,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:10:57,287 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2020-10-19 18:10:57,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:10:57,287 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2020-10-19 18:10:57,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 18:10:57,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:10:57,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:10:57,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-19 18:10:57,510 INFO L429 AbstractCegarLoop]: === Iteration 8 === [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, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-19 18:10:57,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:10:57,510 INFO L82 PathProgramCache]: Analyzing trace with hash -232804582, now seen corresponding path program 1 times [2020-10-19 18:10:57,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:10:57,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316950179] [2020-10-19 18:10:57,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-19 18:10:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:10:57,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:10:57,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:10:57,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:10:57,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:10:57,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:10:57,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [316950179] [2020-10-19 18:10:57,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:10:57,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-19 18:10:57,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860740778] [2020-10-19 18:10:57,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:10:57,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:10:57,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:10:57,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:10:57,704 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand 5 states. [2020-10-19 18:10:57,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:10:57,728 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2020-10-19 18:10:57,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:10:57,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-19 18:10:57,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:10:57,729 INFO L225 Difference]: With dead ends: 68 [2020-10-19 18:10:57,729 INFO L226 Difference]: Without dead ends: 64 [2020-10-19 18:10:57,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:10:57,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-19 18:10:57,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-10-19 18:10:57,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-19 18:10:57,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2020-10-19 18:10:57,736 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 24 [2020-10-19 18:10:57,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:10:57,736 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2020-10-19 18:10:57,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:10:57,736 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2020-10-19 18:10:57,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 18:10:57,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:10:57,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:10:57,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-19 18:10:57,941 INFO L429 AbstractCegarLoop]: === Iteration 9 === [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, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-19 18:10:57,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:10:57,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1514319562, now seen corresponding path program 1 times [2020-10-19 18:10:57,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:10:57,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758059208] [2020-10-19 18:10:57,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-10-19 18:10:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:10:58,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-19 18:10:58,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:10:58,113 INFO L350 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-10-19 18:10:58,114 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2020-10-19 18:10:58,114 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:10:58,136 INFO L625 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2020-10-19 18:10:58,138 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-19 18:10:58,139 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. [2020-10-19 18:10:58,139 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2020-10-19 18:10:58,140 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-19 18:10:58,232 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:10:58,233 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-10-19 18:10:58,233 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:10:58,248 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-10-19 18:10:58,249 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. [2020-10-19 18:10:58,250 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2020-10-19 18:10:58,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:10:58,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:10:58,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:10:58,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758059208] [2020-10-19 18:10:58,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:10:58,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 8 [2020-10-19 18:10:58,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021747671] [2020-10-19 18:10:58,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:10:58,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:10:58,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:10:58,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:10:58,446 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 9 states. [2020-10-19 18:11:00,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:11:00,926 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2020-10-19 18:11:00,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:11:00,928 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-19 18:11:00,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:11:00,929 INFO L225 Difference]: With dead ends: 63 [2020-10-19 18:11:00,929 INFO L226 Difference]: Without dead ends: 63 [2020-10-19 18:11:00,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:11:00,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-19 18:11:00,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-19 18:11:00,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-19 18:11:00,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2020-10-19 18:11:00,940 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 28 [2020-10-19 18:11:00,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:11:00,940 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2020-10-19 18:11:00,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:11:00,941 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2020-10-19 18:11:00,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 18:11:00,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:11:00,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:11:01,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-10-19 18:11:01,152 INFO L429 AbstractCegarLoop]: === Iteration 10 === [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, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-19 18:11:01,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:11:01,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1514319563, now seen corresponding path program 1 times [2020-10-19 18:11:01,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:11:01,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780828347] [2020-10-19 18:11:01,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-10-19 18:11:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:11:01,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-19 18:11:01,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:11:01,323 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:11:01,324 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-10-19 18:11:01,324 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:11:01,350 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-10-19 18:11:01,352 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:11:01,352 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-10-19 18:11:01,485 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:11:01,485 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2020-10-19 18:11:01,486 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:11:01,508 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-10-19 18:11:01,509 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. [2020-10-19 18:11:01,510 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:14 [2020-10-19 18:11:01,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:11:01,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:11:01,838 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:11:02,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:11:02,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780828347] [2020-10-19 18:11:02,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:11:02,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2020-10-19 18:11:02,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996938248] [2020-10-19 18:11:02,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-19 18:11:02,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:11:02,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-19 18:11:02,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-19 18:11:02,796 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 15 states. [2020-10-19 18:11:05,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:11:05,113 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2020-10-19 18:11:05,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:11:05,114 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2020-10-19 18:11:05,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:11:05,114 INFO L225 Difference]: With dead ends: 61 [2020-10-19 18:11:05,115 INFO L226 Difference]: Without dead ends: 61 [2020-10-19 18:11:05,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-19 18:11:05,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-19 18:11:05,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-19 18:11:05,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-19 18:11:05,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-10-19 18:11:05,118 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 28 [2020-10-19 18:11:05,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:11:05,119 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-10-19 18:11:05,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-19 18:11:05,119 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-10-19 18:11:05,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 18:11:05,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:11:05,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:11:05,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-10-19 18:11:05,326 INFO L429 AbstractCegarLoop]: === Iteration 11 === [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, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-19 18:11:05,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:11:05,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1727877462, now seen corresponding path program 1 times [2020-10-19 18:11:05,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:11:05,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106053492] [2020-10-19 18:11:05,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-10-19 18:11:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:11:05,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-19 18:11:05,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:11:05,537 INFO L350 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-10-19 18:11:05,538 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2020-10-19 18:11:05,538 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:11:05,567 INFO L625 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2020-10-19 18:11:05,568 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-19 18:11:05,570 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. [2020-10-19 18:11:05,570 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2020-10-19 18:11:05,571 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-19 18:11:05,585 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2020-10-19 18:11:05,586 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:11:05,588 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:11:05,589 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:11:05,589 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:3 [2020-10-19 18:11:05,652 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2020-10-19 18:11:05,653 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:11:05,655 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:11:05,656 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. [2020-10-19 18:11:05,656 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2020-10-19 18:11:07,739 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:11:07,739 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 41 [2020-10-19 18:11:07,741 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-19 18:11:07,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106053492] [2020-10-19 18:11:07,742 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-19 18:11:07,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1308576611] [2020-10-19 18:11:07,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 18:11:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:11:08,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-19 18:11:08,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:11:08,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:11:08,051 INFO L350 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2020-10-19 18:11:08,052 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 2 case distinctions, treesize of input 12 treesize of output 20 [2020-10-19 18:11:08,053 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:11:08,065 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:11:08,066 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:11:08,067 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. [2020-10-19 18:11:08,068 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:23 [2020-10-19 18:11:08,068 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:11:08,115 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2020-10-19 18:11:08,116 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-19 18:11:08,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642613686] [2020-10-19 18:11:08,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:11:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:11:08,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-19 18:11:08,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:11:08,290 INFO L350 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-10-19 18:11:08,291 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2020-10-19 18:11:08,291 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:11:08,317 INFO L625 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2020-10-19 18:11:08,319 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-19 18:11:08,320 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. [2020-10-19 18:11:08,320 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2020-10-19 18:11:08,320 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-19 18:11:08,326 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2020-10-19 18:11:08,328 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:11:08,330 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:11:08,330 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:11:08,330 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:3 [2020-10-19 18:11:08,337 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2020-10-19 18:11:08,340 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:11:08,342 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:11:08,342 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. [2020-10-19 18:11:08,343 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2020-10-19 18:11:08,401 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:11:08,402 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 41 [2020-10-19 18:11:08,403 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-19 18:11:08,404 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-19 18:11:08,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:11:08,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-19 18:11:08,408 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-19 18:11:08,408 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:11:09,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3,14 cvc4 --incremental --print-success --lang smt --rewrite-divk,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:11:09,040 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-19 18:11:09,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:11:09 BoogieIcfgContainer [2020-10-19 18:11:09,040 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:11:09,041 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:11:09,041 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:11:09,041 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:11:09,041 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:10:51" (3/4) ... [2020-10-19 18:11:09,045 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:11:09,045 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:11:09,046 INFO L168 Benchmark]: Toolchain (without parser) took 20617.31 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 330.8 MB). Free memory was 949.2 MB in the beginning and 1.2 GB in the end (delta: -246.9 MB). Peak memory consumption was 83.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:11:09,047 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:11:09,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 854.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -146.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:11:09,047 INFO L168 Benchmark]: Boogie Preprocessor took 122.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:11:09,048 INFO L168 Benchmark]: RCFGBuilder took 1763.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 977.1 MB in the end (delta: 118.4 MB). Peak memory consumption was 118.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:11:09,048 INFO L168 Benchmark]: TraceAbstraction took 17861.52 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 189.3 MB). Free memory was 977.1 MB in the beginning and 1.2 GB in the end (delta: -219.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:11:09,048 INFO L168 Benchmark]: Witness Printer took 4.41 ms. Allocated memory is still 1.4 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:11:09,050 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 854.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -146.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 122.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1763.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 977.1 MB in the end (delta: 118.4 MB). Peak memory consumption was 118.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 17861.52 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 189.3 MB). Free memory was 977.1 MB in the beginning and 1.2 GB in the end (delta: -219.0 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 4.41 ms. Allocated memory is still 1.4 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 790]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L784] struct A a6; [L793] CALL entry_point() [L786] CALL, EXPR probe3_6(&a6) [L764] int ret = - -3; [L765] CALL, EXPR ldv_malloc(sizeof(int)) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L765] RET, EXPR ldv_malloc(sizeof(int)) [L765] int *p = (int *)ldv_malloc(sizeof(int)); [L766] COND FALSE !(p==0) [L768] CALL, EXPR f6() [L758] return __VERIFIER_nondet_int(); [L768] RET, EXPR f6() [L768] ret = f6() [L769] COND TRUE ret<0 [L778] free(p) [L778] free(p) [L778] free(p) [L779] return ret; [L786] RET, EXPR probe3_6(&a6) [L786] int ret = probe3_6(&a6); [L787] COND FALSE !(ret==0) [L790] a6.p = 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 51 procedures, 379 locations, 86 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 17.7s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 620 SDtfs, 692 SDslu, 1465 SDs, 0 SdLazy, 849 SolverSat, 163 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 499 GetRequests, 405 SyntacticMatches, 21 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=139occurred 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: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 92 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 442 ConstructedInterpolants, 37 QuantifiedInterpolants, 54055 SizeOfPredicates, 34 NumberOfNonLiveVariables, 1097 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...