./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.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 254e3dbb3d4b2f0b71591f87e1d60dc8ec7bfdff ............................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.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 254e3dbb3d4b2f0b71591f87e1d60dc8ec7bfdff ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:03:33,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:03:33,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:03:33,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:03:33,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:03:33,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:03:33,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:03:33,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:03:33,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:03:33,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:03:33,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:03:33,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:03:33,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:03:33,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:03:33,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:03:33,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:03:33,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:03:33,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:03:33,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:03:33,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:03:33,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:03:33,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:03:33,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:03:33,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:03:33,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:03:33,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:03:33,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:03:33,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:03:33,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:03:33,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:03:33,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:03:33,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:03:33,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:03:33,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:03:33,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:03:33,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:03:33,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:03:33,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:03:33,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:03:33,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:03:33,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:03:33,464 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 06:03:33,487 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:03:33,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:03:33,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:03:33,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:03:33,489 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:03:33,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:03:33,489 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:03:33,490 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:03:33,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:03:33,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:03:33,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:03:33,491 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:03:33,491 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:03:33,491 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:03:33,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:03:33,492 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:03:33,492 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:03:33,492 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:03:33,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:03:33,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:03:33,493 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:03:33,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:03:33,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:03:33,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:03:33,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:03:33,494 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:03:33,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:03:33,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:03:33,495 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 -> 254e3dbb3d4b2f0b71591f87e1d60dc8ec7bfdff [2020-10-20 06:03:33,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:03:33,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:03:33,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:03:33,723 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:03:33,725 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:03:33,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2020-10-20 06:03:33,797 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/221d618a1/eac927a3399243b88d4d9779d8c33834/FLAG85ad8b1fc [2020-10-20 06:03:34,329 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:03:34,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2020-10-20 06:03:34,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/221d618a1/eac927a3399243b88d4d9779d8c33834/FLAG85ad8b1fc [2020-10-20 06:03:34,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/221d618a1/eac927a3399243b88d4d9779d8c33834 [2020-10-20 06:03:34,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:03:34,594 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:03:34,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:03:34,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:03:34,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:03:34,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:03:34" (1/1) ... [2020-10-20 06:03:34,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dcc723d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:34, skipping insertion in model container [2020-10-20 06:03:34,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:03:34" (1/1) ... [2020-10-20 06:03:34,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:03:34,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:03:35,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:03:35,186 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2020-10-20 06:03:35,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3ef96ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:35, skipping insertion in model container [2020-10-20 06:03:35,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:03:35,188 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2020-10-20 06:03:35,191 INFO L168 Benchmark]: Toolchain (without parser) took 598.92 ms. Allocated memory was 34.6 MB in the beginning and 42.5 MB in the end (delta: 7.9 MB). Free memory was 14.0 MB in the beginning and 21.8 MB in the end (delta: -7.8 MB). Peak memory consumption was 11.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:03:35,192 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 33.0 MB. Free memory was 10.3 MB in the beginning and 10.2 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-20 06:03:35,194 INFO L168 Benchmark]: CACSL2BoogieTranslator took 592.31 ms. Allocated memory was 34.6 MB in the beginning and 42.5 MB in the end (delta: 7.9 MB). Free memory was 13.1 MB in the beginning and 22.0 MB in the end (delta: -8.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:03:35,196 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 33.0 MB. Free memory was 10.3 MB in the beginning and 10.2 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 592.31 ms. Allocated memory was 34.6 MB in the beginning and 42.5 MB in the end (delta: 7.9 MB). Free memory was 13.1 MB in the beginning and 22.0 MB in the end (delta: -8.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:03:37,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:03:37,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:03:37,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:03:37,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:03:37,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:03:37,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:03:37,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:03:37,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:03:37,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:03:37,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:03:37,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:03:37,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:03:37,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:03:37,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:03:37,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:03:37,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:03:37,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:03:37,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:03:37,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:03:37,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:03:37,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:03:37,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:03:37,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:03:37,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:03:37,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:03:37,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:03:37,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:03:37,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:03:37,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:03:37,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:03:37,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:03:37,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:03:37,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:03:37,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:03:37,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:03:37,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:03:37,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:03:37,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:03:37,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:03:37,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:03:37,284 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-20 06:03:37,335 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:03:37,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:03:37,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:03:37,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:03:37,340 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:03:37,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:03:37,341 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:03:37,341 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:03:37,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:03:37,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:03:37,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:03:37,341 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:03:37,342 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:03:37,342 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:03:37,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:03:37,344 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:03:37,344 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 06:03:37,344 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 06:03:37,344 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:03:37,344 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:03:37,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:03:37,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:03:37,345 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:03:37,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:03:37,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:03:37,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:03:37,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:03:37,346 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 06:03:37,346 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 06:03:37,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:03:37,347 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 06:03:37,347 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 -> 254e3dbb3d4b2f0b71591f87e1d60dc8ec7bfdff [2020-10-20 06:03:37,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:03:37,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:03:37,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:03:37,579 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:03:37,580 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:03:37,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2020-10-20 06:03:37,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a70a2530/c7d6a5217dcd40c3ab90a4a3ed32786b/FLAGf38f64e9c [2020-10-20 06:03:38,273 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:03:38,274 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2020-10-20 06:03:38,291 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a70a2530/c7d6a5217dcd40c3ab90a4a3ed32786b/FLAGf38f64e9c [2020-10-20 06:03:38,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a70a2530/c7d6a5217dcd40c3ab90a4a3ed32786b [2020-10-20 06:03:38,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:03:38,556 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:03:38,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:03:38,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:03:38,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:03:38,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:03:38" (1/1) ... [2020-10-20 06:03:38,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74bb19ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:38, skipping insertion in model container [2020-10-20 06:03:38,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:03:38" (1/1) ... [2020-10-20 06:03:38,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:03:38,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:03:39,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:03:39,165 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-10-20 06:03:39,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:03:39,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:03:39,276 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:03:39,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:03:39,419 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:03:39,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:39 WrapperNode [2020-10-20 06:03:39,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:03:39,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:03:39,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:03:39,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:03:39,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:39" (1/1) ... [2020-10-20 06:03:39,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:39" (1/1) ... [2020-10-20 06:03:39,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:39" (1/1) ... [2020-10-20 06:03:39,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:39" (1/1) ... [2020-10-20 06:03:39,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:39" (1/1) ... [2020-10-20 06:03:39,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:39" (1/1) ... [2020-10-20 06:03:39,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:39" (1/1) ... [2020-10-20 06:03:39,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:03:39,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:03:39,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:03:39,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:03:39,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:03:39,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:03:39,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:03:39,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-10-20 06:03:39,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 06:03:39,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 06:03:39,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 06:03:39,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 06:03:39,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 06:03:39,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 06:03:39,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2020-10-20 06:03:39,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2020-10-20 06:03:39,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-10-20 06:03:39,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-10-20 06:03:39,594 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-10-20 06:03:39,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-10-20 06:03:39,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-10-20 06:03:39,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-10-20 06:03:39,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-10-20 06:03:39,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-10-20 06:03:39,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2020-10-20 06:03:39,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2020-10-20 06:03:39,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2020-10-20 06:03:39,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2020-10-20 06:03:39,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2020-10-20 06:03:39,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2020-10-20 06:03:39,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2020-10-20 06:03:39,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2020-10-20 06:03:39,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2020-10-20 06:03:39,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2020-10-20 06:03:39,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2020-10-20 06:03:39,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2020-10-20 06:03:39,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2020-10-20 06:03:39,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2020-10-20 06:03:39,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2020-10-20 06:03:39,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2020-10-20 06:03:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2020-10-20 06:03:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2020-10-20 06:03:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2020-10-20 06:03:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2020-10-20 06:03:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2020-10-20 06:03:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-10-20 06:03:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2020-10-20 06:03:39,600 INFO L138 BoogieDeclarations]: Found implementation of procedure f6 [2020-10-20 06:03:39,600 INFO L138 BoogieDeclarations]: Found implementation of procedure g6 [2020-10-20 06:03:39,600 INFO L138 BoogieDeclarations]: Found implementation of procedure probe2_6 [2020-10-20 06:03:39,600 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_6 [2020-10-20 06:03:39,600 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2020-10-20 06:03:39,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:03:39,601 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-10-20 06:03:39,601 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-20 06:03:39,601 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-20 06:03:39,601 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 06:03:39,601 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 06:03:39,601 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 06:03:39,601 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 06:03:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 06:03:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 06:03:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 06:03:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 06:03:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 06:03:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 06:03:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 06:03:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 06:03:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 06:03:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 06:03:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 06:03:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 06:03:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 06:03:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 06:03:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 06:03:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 06:03:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 06:03:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 06:03:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 06:03:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 06:03:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 06:03:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 06:03:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 06:03:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 06:03:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 06:03:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 06:03:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 06:03:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 06:03:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 06:03:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 06:03:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 06:03:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 06:03:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 06:03:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 06:03:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 06:03:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 06:03:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 06:03:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 06:03:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 06:03:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 06:03:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 06:03:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 06:03:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 06:03:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 06:03:39,608 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 06:03:39,608 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 06:03:39,608 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 06:03:39,608 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 06:03:39,608 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 06:03:39,608 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 06:03:39,608 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 06:03:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 06:03:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 06:03:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 06:03:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 06:03:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 06:03:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 06:03:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 06:03:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 06:03:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:03:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 06:03:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 06:03:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 06:03:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 06:03:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 06:03:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 06:03:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 06:03:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 06:03:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 06:03:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 06:03:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 06:03:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 06:03:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 06:03:39,612 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 06:03:39,612 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 06:03:39,612 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 06:03:39,612 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 06:03:39,612 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 06:03:39,612 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 06:03:39,612 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 06:03:39,613 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 06:03:39,613 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 06:03:39,613 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 06:03:39,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 06:03:39,613 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 06:03:39,613 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 06:03:39,613 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 06:03:39,613 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 06:03:39,614 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 06:03:39,614 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 06:03:39,614 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 06:03:39,614 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 06:03:39,614 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 06:03:39,614 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 06:03:39,614 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 06:03:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 06:03:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 06:03:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 06:03:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 06:03:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 06:03:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 06:03:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 06:03:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 06:03:39,616 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-10-20 06:03:39,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:03:39,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2020-10-20 06:03:39,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2020-10-20 06:03:39,616 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-20 06:03:39,616 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-10-20 06:03:39,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-10-20 06:03:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:03:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-10-20 06:03:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-20 06:03:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-10-20 06:03:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 06:03:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-10-20 06:03:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-10-20 06:03:39,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-10-20 06:03:39,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 06:03:39,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-10-20 06:03:39,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-10-20 06:03:39,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2020-10-20 06:03:39,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2020-10-20 06:03:39,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-20 06:03:39,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2020-10-20 06:03:39,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:03:39,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2020-10-20 06:03:39,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2020-10-20 06:03:39,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2020-10-20 06:03:39,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2020-10-20 06:03:39,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2020-10-20 06:03:39,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 06:03:39,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 06:03:39,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2020-10-20 06:03:39,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2020-10-20 06:03:39,620 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-10-20 06:03:39,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2020-10-20 06:03:39,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2020-10-20 06:03:39,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2020-10-20 06:03:39,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2020-10-20 06:03:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2020-10-20 06:03:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2020-10-20 06:03:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2020-10-20 06:03:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2020-10-20 06:03:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2020-10-20 06:03:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2020-10-20 06:03:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2020-10-20 06:03:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-10-20 06:03:39,622 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-10-20 06:03:39,622 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-10-20 06:03:39,622 INFO L130 BoogieDeclarations]: Found specification of procedure f6 [2020-10-20 06:03:39,622 INFO L130 BoogieDeclarations]: Found specification of procedure g6 [2020-10-20 06:03:39,622 INFO L130 BoogieDeclarations]: Found specification of procedure probe2_6 [2020-10-20 06:03:39,622 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_6 [2020-10-20 06:03:39,622 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2020-10-20 06:03:39,622 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:03:39,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:03:39,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:03:39,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-20 06:03:39,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:03:39,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 06:03:39,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2020-10-20 06:03:39,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2020-10-20 06:03:39,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-20 06:03:39,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-20 06:03:40,281 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-20 06:03:40,661 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-20 06:03:41,041 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:03:41,042 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-20 06:03:41,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:03:41 BoogieIcfgContainer [2020-10-20 06:03:41,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:03:41,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:03:41,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:03:41,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:03:41,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:03:38" (1/3) ... [2020-10-20 06:03:41,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25369d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:03:41, skipping insertion in model container [2020-10-20 06:03:41,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:39" (2/3) ... [2020-10-20 06:03:41,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25369d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:03:41, skipping insertion in model container [2020-10-20 06:03:41,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:03:41" (3/3) ... [2020-10-20 06:03:41,056 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6_1.i [2020-10-20 06:03:41,070 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:03:41,080 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 83 error locations. [2020-10-20 06:03:41,097 INFO L253 AbstractCegarLoop]: Starting to check reachability of 83 error locations. [2020-10-20 06:03:41,123 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:03:41,123 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:03:41,123 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:03:41,123 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:03:41,124 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:03:41,124 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:03:41,124 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:03:41,124 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:03:41,144 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states. [2020-10-20 06:03:41,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:03:41,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:03:41,156 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] [2020-10-20 06:03:41,157 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, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err1REQUIRES_VIOLATION, probe2_6Err0REQUIRES_VIOLATION]=== [2020-10-20 06:03:41,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:03:41,164 INFO L82 PathProgramCache]: Analyzing trace with hash -42624849, now seen corresponding path program 1 times [2020-10-20 06:03:41,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:03:41,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499882671] [2020-10-20 06:03:41,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-20 06:03:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:41,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:03:41,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:41,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:03:41,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:03:41,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:03:41,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499882671] [2020-10-20 06:03:41,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:03:41,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-20 06:03:41,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868794835] [2020-10-20 06:03:41,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:03:41,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:03:41,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:03:41,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:03:41,637 INFO L87 Difference]: Start difference. First operand 134 states. Second operand 5 states. [2020-10-20 06:03:41,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:03:41,716 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2020-10-20 06:03:41,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:03:41,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-20 06:03:41,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:03:41,732 INFO L225 Difference]: With dead ends: 85 [2020-10-20 06:03:41,732 INFO L226 Difference]: Without dead ends: 82 [2020-10-20 06:03:41,734 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 [2020-10-20 06:03:41,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-20 06:03:41,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 65. [2020-10-20 06:03:41,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-20 06:03:41,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-20 06:03:41,792 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 20 [2020-10-20 06:03:41,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:03:41,792 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-20 06:03:41,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:03:41,792 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-20 06:03:41,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:03:41,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:03:41,794 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] [2020-10-20 06:03:42,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 06:03:42,009 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, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err1REQUIRES_VIOLATION, probe2_6Err0REQUIRES_VIOLATION]=== [2020-10-20 06:03:42,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:03:42,010 INFO L82 PathProgramCache]: Analyzing trace with hash -239138354, now seen corresponding path program 1 times [2020-10-20 06:03:42,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:03:42,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981026833] [2020-10-20 06:03:42,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-20 06:03:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:42,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 06:03:42,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:42,239 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:42,240 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 [2020-10-20 06:03:42,241 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:42,294 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-10-20 06:03:42,301 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:03:42,302 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-10-20 06:03:42,340 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 [2020-10-20 06:03:42,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981026833] [2020-10-20 06:03:42,343 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 06:03:42,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [431953661] [2020-10-20 06:03:42,344 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 [2020-10-20 06:03:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:42,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 06:03:42,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:42,696 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:42,697 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 [2020-10-20 06:03:42,698 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:42,725 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-10-20 06:03:42,727 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:03:42,728 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-10-20 06:03:42,745 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 [2020-10-20 06:03:42,747 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:42,752 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:42,753 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:03:42,753 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:7 [2020-10-20 06:03:42,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:03:42,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:03:42,933 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-20 06:03:42,947 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 [2020-10-20 06:03:42,947 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:03:43,137 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-10-20 06:03:43,141 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:43,142 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:03:43,142 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:28 [2020-10-20 06:03:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:03:43,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:03:43,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-20 06:03:43,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859228142] [2020-10-20 06:03:43,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:03:43,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:03:43,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:03:43,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:03:43,265 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 6 states. [2020-10-20 06:03:43,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:03:43,615 INFO L93 Difference]: Finished difference Result 110 states and 116 transitions. [2020-10-20 06:03:43,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:03:43,616 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-20 06:03:43,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:03:43,620 INFO L225 Difference]: With dead ends: 110 [2020-10-20 06:03:43,620 INFO L226 Difference]: Without dead ends: 110 [2020-10-20 06:03:43,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 6 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:03:43,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-20 06:03:43,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 95. [2020-10-20 06:03:43,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-20 06:03:43,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 113 transitions. [2020-10-20 06:03:43,643 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 113 transitions. Word has length 20 [2020-10-20 06:03:43,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:03:43,643 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 113 transitions. [2020-10-20 06:03:43,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:03:43,644 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 113 transitions. [2020-10-20 06:03:43,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:03:43,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:03:43,645 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] [2020-10-20 06:03:44,046 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 [2020-10-20 06:03:44,047 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, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err1REQUIRES_VIOLATION, probe2_6Err0REQUIRES_VIOLATION]=== [2020-10-20 06:03:44,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:03:44,048 INFO L82 PathProgramCache]: Analyzing trace with hash -239138355, now seen corresponding path program 1 times [2020-10-20 06:03:44,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:03:44,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19537249] [2020-10-20 06:03:44,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-20 06:03:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:44,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:03:44,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:44,241 INFO L350 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-10-20 06:03:44,242 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 [2020-10-20 06:03:44,242 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:44,280 INFO L625 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2020-10-20 06:03:44,282 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 06:03:44,284 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:03:44,284 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2020-10-20 06:03:44,285 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 06:03:44,322 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 [2020-10-20 06:03:44,329 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:44,332 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:44,332 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:03:44,332 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:3 [2020-10-20 06:03:44,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:03:44,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:03:44,406 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 06:03:44,416 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 [2020-10-20 06:03:44,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19537249] [2020-10-20 06:03:44,418 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-20 06:03:44,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [724638849] [2020-10-20 06:03:44,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 06:03:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:44,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:03:44,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:44,749 INFO L350 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-10-20 06:03:44,750 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 [2020-10-20 06:03:44,751 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:44,784 INFO L625 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2020-10-20 06:03:44,786 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 06:03:44,788 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:03:44,788 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2020-10-20 06:03:44,789 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 06:03:44,802 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 [2020-10-20 06:03:44,804 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:44,806 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:44,806 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:03:44,806 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:3 [2020-10-20 06:03:44,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:03:44,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:03:44,874 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 06:03:44,884 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 [2020-10-20 06:03:44,885 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-20 06:03:44,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407338596] [2020-10-20 06:03:44,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:03:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:45,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:03:45,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:45,067 INFO L350 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-10-20 06:03:45,067 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 [2020-10-20 06:03:45,068 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:45,096 INFO L625 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2020-10-20 06:03:45,097 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 06:03:45,099 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:03:45,100 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2020-10-20 06:03:45,101 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 06:03:45,118 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 [2020-10-20 06:03:45,120 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:45,130 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:45,130 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:03:45,130 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:3 [2020-10-20 06:03:45,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:03:45,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:03:45,188 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 06:03:45,195 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 [2020-10-20 06:03:45,196 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:45,201 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:45,201 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:03:45,201 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:16 [2020-10-20 06:03:45,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:03:45,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:03:45,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-20 06:03:45,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656041867] [2020-10-20 06:03:45,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:03:45,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:03:45,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:03:45,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:03:45,231 INFO L87 Difference]: Start difference. First operand 95 states and 113 transitions. Second operand 5 states. [2020-10-20 06:03:45,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:03:45,412 INFO L93 Difference]: Finished difference Result 131 states and 152 transitions. [2020-10-20 06:03:45,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:03:45,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-20 06:03:45,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:03:45,414 INFO L225 Difference]: With dead ends: 131 [2020-10-20 06:03:45,415 INFO L226 Difference]: Without dead ends: 127 [2020-10-20 06:03:45,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:03:45,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-20 06:03:45,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 104. [2020-10-20 06:03:45,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-20 06:03:45,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2020-10-20 06:03:45,429 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 20 [2020-10-20 06:03:45,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:03:45,429 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2020-10-20 06:03:45,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:03:45,430 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2020-10-20 06:03:45,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 06:03:45,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:03:45,431 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] [2020-10-20 06:03:46,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3,6 cvc4 --incremental --print-success --lang smt --rewrite-divk,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:03:46,055 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, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err1REQUIRES_VIOLATION, probe2_6Err0REQUIRES_VIOLATION]=== [2020-10-20 06:03:46,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:03:46,056 INFO L82 PathProgramCache]: Analyzing trace with hash 240943427, now seen corresponding path program 1 times [2020-10-20 06:03:46,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:03:46,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568978256] [2020-10-20 06:03:46,057 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 [2020-10-20 06:03:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:46,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:03:46,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:46,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:03:46,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:03:46,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:03:46,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568978256] [2020-10-20 06:03:46,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:03:46,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-20 06:03:46,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093193078] [2020-10-20 06:03:46,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:03:46,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:03:46,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:03:46,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:03:46,272 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand 5 states. [2020-10-20 06:03:46,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:03:46,313 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2020-10-20 06:03:46,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:03:46,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-20 06:03:46,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:03:46,317 INFO L225 Difference]: With dead ends: 103 [2020-10-20 06:03:46,317 INFO L226 Difference]: Without dead ends: 103 [2020-10-20 06:03:46,317 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 [2020-10-20 06:03:46,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-20 06:03:46,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-10-20 06:03:46,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-20 06:03:46,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 122 transitions. [2020-10-20 06:03:46,327 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 122 transitions. Word has length 22 [2020-10-20 06:03:46,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:03:46,328 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 122 transitions. [2020-10-20 06:03:46,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:03:46,328 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 122 transitions. [2020-10-20 06:03:46,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 06:03:46,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:03:46,330 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] [2020-10-20 06:03:46,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-20 06:03:46,543 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, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err1REQUIRES_VIOLATION, probe2_6Err0REQUIRES_VIOLATION]=== [2020-10-20 06:03:46,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:03:46,544 INFO L82 PathProgramCache]: Analyzing trace with hash 2116285580, now seen corresponding path program 1 times [2020-10-20 06:03:46,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:03:46,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849705851] [2020-10-20 06:03:46,546 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 [2020-10-20 06:03:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:46,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:03:46,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:46,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:03:46,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:03:46,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:03:46,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849705851] [2020-10-20 06:03:46,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:03:46,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-10-20 06:03:46,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766784109] [2020-10-20 06:03:46,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:03:46,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:03:46,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:03:46,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:03:46,794 INFO L87 Difference]: Start difference. First operand 103 states and 122 transitions. Second operand 10 states. [2020-10-20 06:03:46,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:03:46,881 INFO L93 Difference]: Finished difference Result 121 states and 137 transitions. [2020-10-20 06:03:46,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:03:46,882 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-10-20 06:03:46,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:03:46,884 INFO L225 Difference]: With dead ends: 121 [2020-10-20 06:03:46,884 INFO L226 Difference]: Without dead ends: 113 [2020-10-20 06:03:46,884 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 [2020-10-20 06:03:46,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-20 06:03:46,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2020-10-20 06:03:46,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-20 06:03:46,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2020-10-20 06:03:46,911 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 22 [2020-10-20 06:03:46,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:03:46,912 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2020-10-20 06:03:46,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:03:46,912 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2020-10-20 06:03:46,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 06:03:46,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:03:46,915 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] [2020-10-20 06:03:47,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-20 06:03:47,129 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, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err1REQUIRES_VIOLATION, probe2_6Err0REQUIRES_VIOLATION]=== [2020-10-20 06:03:47,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:03:47,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1120687975, now seen corresponding path program 1 times [2020-10-20 06:03:47,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:03:47,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448211820] [2020-10-20 06:03:47,131 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 [2020-10-20 06:03:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:47,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:03:47,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:47,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448211820] [2020-10-20 06:03:47,330 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 06:03:47,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1538897461] [2020-10-20 06:03:47,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 06:03:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:47,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:03:47,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:47,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:03:47,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:03:47,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:03:47,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:03:47,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2020-10-20 06:03:47,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110584970] [2020-10-20 06:03:47,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:03:47,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:03:47,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:03:47,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:03:47,708 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand 6 states. [2020-10-20 06:03:47,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:03:47,845 INFO L93 Difference]: Finished difference Result 106 states and 120 transitions. [2020-10-20 06:03:47,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:03:47,846 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-20 06:03:47,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:03:47,848 INFO L225 Difference]: With dead ends: 106 [2020-10-20 06:03:47,848 INFO L226 Difference]: Without dead ends: 106 [2020-10-20 06:03:47,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:03:47,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-20 06:03:47,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-10-20 06:03:47,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-20 06:03:47,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2020-10-20 06:03:47,860 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 23 [2020-10-20 06:03:47,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:03:47,860 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2020-10-20 06:03:47,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:03:47,861 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2020-10-20 06:03:47,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 06:03:47,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:03:47,862 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] [2020-10-20 06:03:48,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3,11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 06:03:48,281 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, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err1REQUIRES_VIOLATION, probe2_6Err0REQUIRES_VIOLATION]=== [2020-10-20 06:03:48,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:03:48,282 INFO L82 PathProgramCache]: Analyzing trace with hash -381588475, now seen corresponding path program 1 times [2020-10-20 06:03:48,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:03:48,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234769307] [2020-10-20 06:03:48,283 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 [2020-10-20 06:03:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:48,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:03:48,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:48,416 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:03:48,416 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:48,418 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:48,419 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:03:48,419 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:03:48,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:03:48,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:03:48,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:03:48,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234769307] [2020-10-20 06:03:48,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:03:48,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2020-10-20 06:03:48,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710751636] [2020-10-20 06:03:48,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:03:48,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:03:48,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:03:48,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:03:48,515 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand 6 states. [2020-10-20 06:03:48,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:03:48,688 INFO L93 Difference]: Finished difference Result 109 states and 119 transitions. [2020-10-20 06:03:48,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:03:48,688 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-20 06:03:48,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:03:48,690 INFO L225 Difference]: With dead ends: 109 [2020-10-20 06:03:48,690 INFO L226 Difference]: Without dead ends: 109 [2020-10-20 06:03:48,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:03:48,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-20 06:03:48,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2020-10-20 06:03:48,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-20 06:03:48,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2020-10-20 06:03:48,697 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 24 [2020-10-20 06:03:48,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:03:48,698 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2020-10-20 06:03:48,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:03:48,698 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2020-10-20 06:03:48,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 06:03:48,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:03:48,699 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] [2020-10-20 06:03:48,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-10-20 06:03:48,912 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, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err1REQUIRES_VIOLATION, probe2_6Err0REQUIRES_VIOLATION]=== [2020-10-20 06:03:48,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:03:48,913 INFO L82 PathProgramCache]: Analyzing trace with hash -887147100, now seen corresponding path program 1 times [2020-10-20 06:03:48,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:03:48,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455176034] [2020-10-20 06:03:48,913 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 [2020-10-20 06:03:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:49,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:03:49,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:49,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:03:49,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:03:49,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:03:49,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455176034] [2020-10-20 06:03:49,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:03:49,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-20 06:03:49,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157115583] [2020-10-20 06:03:49,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:03:49,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:03:49,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:03:49,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:03:49,117 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand 5 states. [2020-10-20 06:03:49,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:03:49,150 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2020-10-20 06:03:49,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:03:49,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-20 06:03:49,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:03:49,152 INFO L225 Difference]: With dead ends: 71 [2020-10-20 06:03:49,152 INFO L226 Difference]: Without dead ends: 67 [2020-10-20 06:03:49,153 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 [2020-10-20 06:03:49,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-20 06:03:49,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-20 06:03:49,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-20 06:03:49,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-10-20 06:03:49,160 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 24 [2020-10-20 06:03:49,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:03:49,160 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-10-20 06:03:49,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:03:49,161 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-10-20 06:03:49,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 06:03:49,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:03:49,164 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] [2020-10-20 06:03:49,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-10-20 06:03:49,375 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, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err1REQUIRES_VIOLATION, probe2_6Err0REQUIRES_VIOLATION]=== [2020-10-20 06:03:49,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:03:49,375 INFO L82 PathProgramCache]: Analyzing trace with hash 783543578, now seen corresponding path program 1 times [2020-10-20 06:03:49,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:03:49,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159489746] [2020-10-20 06:03:49,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-10-20 06:03:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:49,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 06:03:49,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:49,555 INFO L350 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-10-20 06:03:49,556 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 [2020-10-20 06:03:49,557 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:49,581 INFO L625 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2020-10-20 06:03:49,582 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 06:03:49,583 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:03:49,584 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2020-10-20 06:03:49,584 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 06:03:49,654 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:49,655 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 [2020-10-20 06:03:49,656 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:49,673 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-10-20 06:03:49,674 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:03:49,674 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2020-10-20 06:03:49,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:03:49,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:03:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:03:50,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159489746] [2020-10-20 06:03:50,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:03:50,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 8 [2020-10-20 06:03:50,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114295669] [2020-10-20 06:03:50,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:03:50,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:03:50,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:03:50,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:03:50,200 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 9 states. [2020-10-20 06:03:50,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:03:50,588 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-10-20 06:03:50,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:03:50,589 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-20 06:03:50,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:03:50,590 INFO L225 Difference]: With dead ends: 71 [2020-10-20 06:03:50,590 INFO L226 Difference]: Without dead ends: 71 [2020-10-20 06:03:50,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:03:50,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-20 06:03:50,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2020-10-20 06:03:50,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-20 06:03:50,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-10-20 06:03:50,596 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 28 [2020-10-20 06:03:50,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:03:50,596 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-10-20 06:03:50,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:03:50,597 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-10-20 06:03:50,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 06:03:50,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:03:50,602 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] [2020-10-20 06:03:50,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-10-20 06:03:50,804 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, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err1REQUIRES_VIOLATION, probe2_6Err0REQUIRES_VIOLATION]=== [2020-10-20 06:03:50,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:03:50,804 INFO L82 PathProgramCache]: Analyzing trace with hash 783543579, now seen corresponding path program 1 times [2020-10-20 06:03:50,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:03:50,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759398546] [2020-10-20 06:03:50,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-10-20 06:03:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:50,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-20 06:03:50,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:50,959 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:50,960 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 [2020-10-20 06:03:50,960 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:50,986 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-10-20 06:03:50,992 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:03:50,992 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-10-20 06:03:51,103 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:51,104 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 [2020-10-20 06:03:51,104 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:51,128 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-10-20 06:03:51,129 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:03:51,129 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:14 [2020-10-20 06:03:51,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:03:51,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:03:51,430 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 06:03:52,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:03:52,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759398546] [2020-10-20 06:03:52,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:03:52,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2020-10-20 06:03:52,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500808269] [2020-10-20 06:03:52,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-20 06:03:52,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:03:52,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-20 06:03:52,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-20 06:03:52,712 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 15 states. [2020-10-20 06:03:55,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:03:55,177 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2020-10-20 06:03:55,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 06:03:55,178 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2020-10-20 06:03:55,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:03:55,179 INFO L225 Difference]: With dead ends: 64 [2020-10-20 06:03:55,179 INFO L226 Difference]: Without dead ends: 64 [2020-10-20 06:03:55,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-20 06:03:55,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-20 06:03:55,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-10-20 06:03:55,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-20 06:03:55,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2020-10-20 06:03:55,183 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 28 [2020-10-20 06:03:55,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:03:55,183 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2020-10-20 06:03:55,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-20 06:03:55,184 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2020-10-20 06:03:55,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-20 06:03:55,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:03:55,185 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] [2020-10-20 06:03:55,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-10-20 06:03:55,390 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, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err1REQUIRES_VIOLATION, probe2_6Err0REQUIRES_VIOLATION]=== [2020-10-20 06:03:55,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:03:55,390 INFO L82 PathProgramCache]: Analyzing trace with hash 558976828, now seen corresponding path program 1 times [2020-10-20 06:03:55,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:03:55,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1423889637] [2020-10-20 06:03:55,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-10-20 06:03:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:55,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-20 06:03:55,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:55,576 INFO L350 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-10-20 06:03:55,577 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 [2020-10-20 06:03:55,577 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:55,601 INFO L625 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2020-10-20 06:03:55,602 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 06:03:55,603 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:03:55,603 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2020-10-20 06:03:55,603 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 06:03:55,625 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 [2020-10-20 06:03:55,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1423889637] [2020-10-20 06:03:55,626 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-20 06:03:55,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [425071670] [2020-10-20 06:03:55,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 17 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 06:03:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:55,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-20 06:03:55,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:55,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:03:55,939 INFO L350 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2020-10-20 06:03:55,940 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 [2020-10-20 06:03:55,940 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:55,954 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:55,955 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:03:55,956 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:03:55,957 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:23 [2020-10-20 06:03:55,957 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:03:55,984 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 [2020-10-20 06:03:55,984 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-20 06:03:55,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456184226] [2020-10-20 06:03:55,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:03:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:56,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-20 06:03:56,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:56,174 INFO L350 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-10-20 06:03:56,175 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 [2020-10-20 06:03:56,175 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:56,202 INFO L625 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2020-10-20 06:03:56,203 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 06:03:56,204 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:03:56,204 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2020-10-20 06:03:56,205 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 06:03:56,210 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 [2020-10-20 06:03:56,211 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:56,213 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:56,213 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:03:56,213 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:3 [2020-10-20 06:03:56,263 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 [2020-10-20 06:03:56,264 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:56,266 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:56,266 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:03:56,266 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2020-10-20 06:03:58,360 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:58,361 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 [2020-10-20 06:03:58,362 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:58,388 INFO L625 ElimStorePlain]: treesize reduction 18, result has 37.9 percent of original size [2020-10-20 06:03:58,390 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:03:58,390 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-10-20 06:03:58,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:03:58,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:04:00,568 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 06:04:00,678 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 06:04:00,689 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 [2020-10-20 06:04:00,690 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-20 06:04:00,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:04:00,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 06:04:00,690 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 06:04:00,691 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:04:01,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 06:04:01,316 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 06:04:01,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:04:01 BoogieIcfgContainer [2020-10-20 06:04:01,316 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:04:01,317 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:04:01,317 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:04:01,317 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:04:01,318 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:03:41" (3/4) ... [2020-10-20 06:04:01,322 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:04:01,322 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:04:01,323 INFO L168 Benchmark]: Toolchain (without parser) took 22771.63 ms. Allocated memory was 41.4 MB in the beginning and 109.6 MB in the end (delta: 68.2 MB). Free memory was 17.1 MB in the beginning and 84.1 MB in the end (delta: -67.0 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:04:01,324 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 30.4 MB. Free memory was 6.2 MB in the beginning and 6.1 MB in the end (delta: 62.9 kB). Peak memory consumption was 62.9 kB. Max. memory is 14.3 GB. [2020-10-20 06:04:01,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 863.26 ms. Allocated memory was 41.4 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Free memory was 16.2 MB in the beginning and 13.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 8.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:04:01,325 INFO L168 Benchmark]: Boogie Preprocessor took 110.91 ms. Allocated memory was 43.5 MB in the beginning and 46.1 MB in the end (delta: 2.6 MB). Free memory was 13.5 MB in the beginning and 27.5 MB in the end (delta: -14.0 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:04:01,325 INFO L168 Benchmark]: RCFGBuilder took 1513.82 ms. Allocated memory was 46.1 MB in the beginning and 54.0 MB in the end (delta: 7.9 MB). Free memory was 27.5 MB in the beginning and 20.5 MB in the end (delta: 7.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:04:01,326 INFO L168 Benchmark]: TraceAbstraction took 20269.66 ms. Allocated memory was 54.0 MB in the beginning and 109.6 MB in the end (delta: 55.6 MB). Free memory was 20.1 MB in the beginning and 84.1 MB in the end (delta: -64.0 MB). Peak memory consumption was 61.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:04:01,326 INFO L168 Benchmark]: Witness Printer took 5.35 ms. Allocated memory is still 109.6 MB. Free memory is still 84.1 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:04:01,329 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 30.4 MB. Free memory was 6.2 MB in the beginning and 6.1 MB in the end (delta: 62.9 kB). Peak memory consumption was 62.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 863.26 ms. Allocated memory was 41.4 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Free memory was 16.2 MB in the beginning and 13.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 8.2 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 110.91 ms. Allocated memory was 43.5 MB in the beginning and 46.1 MB in the end (delta: 2.6 MB). Free memory was 13.5 MB in the beginning and 27.5 MB in the end (delta: -14.0 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1513.82 ms. Allocated memory was 46.1 MB in the beginning and 54.0 MB in the end (delta: 7.9 MB). Free memory was 27.5 MB in the beginning and 20.5 MB in the end (delta: 7.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 20269.66 ms. Allocated memory was 54.0 MB in the beginning and 109.6 MB in the end (delta: 55.6 MB). Free memory was 20.1 MB in the beginning and 84.1 MB in the end (delta: -64.0 MB). Peak memory consumption was 61.9 MB. Max. memory is 14.3 GB. * Witness Printer took 5.35 ms. Allocated memory is still 109.6 MB. Free memory is still 84.1 MB. There was no memory consumed. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 789]: 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) }; [L783] struct A a6; [L792] CALL entry_point() [L785] CALL, EXPR probe2_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 [L777] free(p) [L777] free(p) [L777] free(p) [L778] return ret; [L785] RET, EXPR probe2_6(&a6) [L785] int ret = probe2_6(&a6); [L786] COND FALSE !(ret==0) [L789] a6.p = 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 51 procedures, 374 locations, 83 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 20.1s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 606 SDtfs, 687 SDslu, 1335 SDs, 0 SdLazy, 747 SolverSat, 176 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 548 GetRequests, 453 SyntacticMatches, 23 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred 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, 69 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 442 ConstructedInterpolants, 34 QuantifiedInterpolants, 52129 SizeOfPredicates, 36 NumberOfNonLiveVariables, 1097 ConjunctsInSsa, 84 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...