./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 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_2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 098cac8041f427989b0fcb649de06793770da06a ............................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -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_2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 098cac8041f427989b0fcb649de06793770da06a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:03:36,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:03:36,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:03:36,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:03:36,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:03:36,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:03:36,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:03:36,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:03:36,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:03:36,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:03:36,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:03:36,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:03:36,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:03:36,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:03:36,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:03:36,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:03:36,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:03:36,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:03:36,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:03:36,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:03:36,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:03:36,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:03:36,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:03:36,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:03:36,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:03:36,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:03:36,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:03:36,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:03:36,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:03:36,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:03:36,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:03:36,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:03:36,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:03:36,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:03:36,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:03:36,801 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:03:36,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:03:36,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:03:36,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:03:36,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:03:36,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:03:36,806 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 06:03:36,842 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:03:36,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:03:36,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:03:36,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:03:36,845 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:03:36,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:03:36,845 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:03:36,845 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:03:36,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:03:36,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:03:36,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:03:36,847 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:03:36,847 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:03:36,848 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:03:36,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:03:36,848 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:03:36,849 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:03:36,849 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:03:36,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:03:36,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:03:36,850 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:03:36,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:03:36,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:03:36,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:03:36,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:03:36,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:03:36,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:03:36,851 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:03:36,852 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 098cac8041f427989b0fcb649de06793770da06a [2020-10-20 06:03:37,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:03:37,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:03:37,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:03:37,093 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:03:37,094 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:03:37,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2020-10-20 06:03:37,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c370cdca8/977d28ded17b4995ab4746409e2cdf7f/FLAG3fda83cea [2020-10-20 06:03:37,665 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:03:37,666 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2020-10-20 06:03:37,695 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c370cdca8/977d28ded17b4995ab4746409e2cdf7f/FLAG3fda83cea [2020-10-20 06:03:37,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c370cdca8/977d28ded17b4995ab4746409e2cdf7f [2020-10-20 06:03:37,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:03:38,001 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:03:38,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:03:38,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:03:38,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:03:38,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:03:37" (1/1) ... [2020-10-20 06:03:38,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67b62db4 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 06:03:38,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:03:37" (1/1) ... [2020-10-20 06:03:38,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:03:38,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:03:38,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:03:38,723 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 06:03:38,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@da3f263 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 06:03:38,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:03:38,725 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2020-10-20 06:03:38,729 INFO L168 Benchmark]: Toolchain (without parser) took 732.45 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 10.2 MB in the beginning and 21.7 MB in the end (delta: -11.5 MB). Peak memory consumption was 8.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:03:38,730 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 33.0 MB. Free memory is still 18.1 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:03:38,733 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.02 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 9.4 MB in the beginning and 21.7 MB in the end (delta: -12.3 MB). Peak memory consumption was 7.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:03:38,736 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 33.0 MB. Free memory is still 18.1 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 718.02 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 9.4 MB in the beginning and 21.7 MB in the end (delta: -12.3 MB). Peak memory consumption was 7.7 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 06:03:40,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:03:40,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:03:40,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:03:40,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:03:40,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:03:40,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:03:40,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:03:40,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:03:40,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:03:40,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:03:40,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:03:40,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:03:40,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:03:40,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:03:40,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:03:40,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:03:40,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:03:40,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:03:40,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:03:40,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:03:40,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:03:40,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:03:40,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:03:40,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:03:40,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:03:40,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:03:40,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:03:40,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:03:40,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:03:40,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:03:40,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:03:40,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:03:40,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:03:40,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:03:40,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:03:40,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:03:40,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:03:40,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:03:40,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:03:40,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:03:40,746 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-20 06:03:40,801 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:03:40,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:03:40,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:03:40,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:03:40,805 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:03:40,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:03:40,805 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:03:40,805 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:03:40,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:03:40,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:03:40,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:03:40,807 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:03:40,807 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:03:40,808 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:03:40,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:03:40,808 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:03:40,809 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 06:03:40,809 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 06:03:40,809 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:03:40,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:03:40,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:03:40,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:03:40,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:03:40,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:03:40,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:03:40,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:03:40,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:03:40,811 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 06:03:40,811 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 06:03:40,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:03:40,812 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 06:03:40,812 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 098cac8041f427989b0fcb649de06793770da06a [2020-10-20 06:03:41,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:03:41,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:03:41,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:03:41,083 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:03:41,084 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:03:41,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2020-10-20 06:03:41,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbc1a2979/818357601f5c4cf1b46365740751ce4c/FLAG36d9e0458 [2020-10-20 06:03:41,787 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:03:41,787 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2020-10-20 06:03:41,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbc1a2979/818357601f5c4cf1b46365740751ce4c/FLAG36d9e0458 [2020-10-20 06:03:42,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbc1a2979/818357601f5c4cf1b46365740751ce4c [2020-10-20 06:03:42,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:03:42,022 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:03:42,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:03:42,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:03:42,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:03:42,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:03:42" (1/1) ... [2020-10-20 06:03:42,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30cc52f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:42, skipping insertion in model container [2020-10-20 06:03:42,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:03:42" (1/1) ... [2020-10-20 06:03:42,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:03:42,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:03:42,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:03:42,602 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-10-20 06:03:42,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:03:42,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:03:42,720 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:03:42,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:03:42,912 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:03:42,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:42 WrapperNode [2020-10-20 06:03:42,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:03:42,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:03:42,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:03:42,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:03:42,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:42" (1/1) ... [2020-10-20 06:03:42,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:42" (1/1) ... [2020-10-20 06:03:42,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:42" (1/1) ... [2020-10-20 06:03:42,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:42" (1/1) ... [2020-10-20 06:03:43,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:42" (1/1) ... [2020-10-20 06:03:43,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:42" (1/1) ... [2020-10-20 06:03:43,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:42" (1/1) ... [2020-10-20 06:03:43,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:03:43,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:03:43,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:03:43,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:03:43,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:42" (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 06:03:43,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:03:43,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:03:43,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-10-20 06:03:43,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 06:03:43,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 06:03:43,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 06:03:43,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 06:03:43,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 06:03:43,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 06:03:43,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2020-10-20 06:03:43,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2020-10-20 06:03:43,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-10-20 06:03:43,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-10-20 06:03:43,113 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-10-20 06:03:43,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-10-20 06:03:43,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-10-20 06:03:43,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-10-20 06:03:43,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-10-20 06:03:43,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-10-20 06:03:43,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2020-10-20 06:03:43,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2020-10-20 06:03:43,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2020-10-20 06:03:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2020-10-20 06:03:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2020-10-20 06:03:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2020-10-20 06:03:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2020-10-20 06:03:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2020-10-20 06:03:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2020-10-20 06:03:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2020-10-20 06:03:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2020-10-20 06:03:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2020-10-20 06:03:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2020-10-20 06:03:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2020-10-20 06:03:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2020-10-20 06:03:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2020-10-20 06:03:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2020-10-20 06:03:43,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2020-10-20 06:03:43,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2020-10-20 06:03:43,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2020-10-20 06:03:43,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2020-10-20 06:03:43,120 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-10-20 06:03:43,120 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2020-10-20 06:03:43,120 INFO L138 BoogieDeclarations]: Found implementation of procedure f6 [2020-10-20 06:03:43,120 INFO L138 BoogieDeclarations]: Found implementation of procedure g6 [2020-10-20 06:03:43,120 INFO L138 BoogieDeclarations]: Found implementation of procedure probe3_6 [2020-10-20 06:03:43,121 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_6 [2020-10-20 06:03:43,121 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2020-10-20 06:03:43,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:03:43,121 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-10-20 06:03:43,121 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-20 06:03:43,121 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-20 06:03:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 06:03:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 06:03:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 06:03:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 06:03:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 06:03:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 06:03:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 06:03:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 06:03:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 06:03:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 06:03:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 06:03:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 06:03:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 06:03:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 06:03:43,124 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 06:03:43,124 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 06:03:43,124 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 06:03:43,124 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 06:03:43,124 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 06:03:43,125 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 06:03:43,125 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 06:03:43,125 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 06:03:43,125 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 06:03:43,126 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 06:03:43,126 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 06:03:43,126 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 06:03:43,126 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 06:03:43,126 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 06:03:43,126 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 06:03:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 06:03:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 06:03:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 06:03:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 06:03:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 06:03:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 06:03:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 06:03:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 06:03:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 06:03:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 06:03:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 06:03:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 06:03:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 06:03:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 06:03:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 06:03:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 06:03:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 06:03:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 06:03:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 06:03:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 06:03:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 06:03:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 06:03:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 06:03:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 06:03:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 06:03:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 06:03:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 06:03:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 06:03:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 06:03:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 06:03:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 06:03:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 06:03:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 06:03:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 06:03:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:03:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 06:03:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 06:03:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 06:03:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 06:03:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 06:03:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 06:03:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 06:03:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 06:03:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 06:03:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 06:03:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 06:03:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 06:03:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 06:03:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 06:03:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 06:03:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 06:03:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 06:03:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 06:03:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 06:03:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 06:03:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 06:03:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 06:03:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 06:03:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 06:03:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 06:03:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 06:03:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 06:03:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 06:03:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 06:03:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 06:03:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 06:03:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 06:03:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 06:03:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 06:03:43,139 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 06:03:43,139 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 06:03:43,139 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 06:03:43,139 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 06:03:43,139 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 06:03:43,139 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 06:03:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 06:03:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 06:03:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 06:03:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-10-20 06:03:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:03:43,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2020-10-20 06:03:43,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2020-10-20 06:03:43,141 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-20 06:03:43,141 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-10-20 06:03:43,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-10-20 06:03:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:03:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-10-20 06:03:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-20 06:03:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-10-20 06:03:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 06:03:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-10-20 06:03:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-10-20 06:03:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-10-20 06:03:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 06:03:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-10-20 06:03:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-10-20 06:03:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2020-10-20 06:03:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2020-10-20 06:03:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-20 06:03:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2020-10-20 06:03:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:03:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2020-10-20 06:03:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2020-10-20 06:03:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2020-10-20 06:03:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2020-10-20 06:03:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2020-10-20 06:03:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 06:03:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 06:03:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2020-10-20 06:03:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2020-10-20 06:03:43,158 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-10-20 06:03:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2020-10-20 06:03:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2020-10-20 06:03:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2020-10-20 06:03:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2020-10-20 06:03:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2020-10-20 06:03:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2020-10-20 06:03:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2020-10-20 06:03:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2020-10-20 06:03:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2020-10-20 06:03:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2020-10-20 06:03:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2020-10-20 06:03:43,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-10-20 06:03:43,161 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-10-20 06:03:43,161 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-10-20 06:03:43,161 INFO L130 BoogieDeclarations]: Found specification of procedure f6 [2020-10-20 06:03:43,161 INFO L130 BoogieDeclarations]: Found specification of procedure g6 [2020-10-20 06:03:43,161 INFO L130 BoogieDeclarations]: Found specification of procedure probe3_6 [2020-10-20 06:03:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_6 [2020-10-20 06:03:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2020-10-20 06:03:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:03:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:03:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:03:43,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-20 06:03:43,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:03:43,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 06:03:43,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2020-10-20 06:03:43,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2020-10-20 06:03:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-20 06:03:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-20 06:03:43,842 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-20 06:03:44,213 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-20 06:03:44,630 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:03:44,631 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-20 06:03:44,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:03:44 BoogieIcfgContainer [2020-10-20 06:03:44,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:03:44,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:03:44,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:03:44,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:03:44,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:03:42" (1/3) ... [2020-10-20 06:03:44,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a93a7d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:03:44, skipping insertion in model container [2020-10-20 06:03:44,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:42" (2/3) ... [2020-10-20 06:03:44,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a93a7d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:03:44, skipping insertion in model container [2020-10-20 06:03:44,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:03:44" (3/3) ... [2020-10-20 06:03:44,642 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6_2.i [2020-10-20 06:03:44,655 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:03:44,663 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 86 error locations. [2020-10-20 06:03:44,679 INFO L253 AbstractCegarLoop]: Starting to check reachability of 86 error locations. [2020-10-20 06:03:44,701 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:03:44,701 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:03:44,701 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:03:44,702 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:03:44,702 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:03:44,702 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:03:44,702 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:03:44,702 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:03:44,722 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2020-10-20 06:03:44,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:03:44,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:03:44,734 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 06:03:44,735 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-20 06:03:44,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:03:44,741 INFO L82 PathProgramCache]: Analyzing trace with hash -2083337596, now seen corresponding path program 1 times [2020-10-20 06:03:44,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:03:44,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262062703] [2020-10-20 06:03:44,755 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 06:03:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:44,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:03:44,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:45,066 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 06:03:45,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:03:45,190 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 06:03:45,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262062703] [2020-10-20 06:03:45,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:03:45,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-20 06:03:45,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982715515] [2020-10-20 06:03:45,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:03:45,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:03:45,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:03:45,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:03:45,216 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 5 states. [2020-10-20 06:03:45,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:03:45,365 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2020-10-20 06:03:45,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:03:45,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-20 06:03:45,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:03:45,388 INFO L225 Difference]: With dead ends: 94 [2020-10-20 06:03:45,388 INFO L226 Difference]: Without dead ends: 91 [2020-10-20 06:03:45,401 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 06:03:45,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-20 06:03:45,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 70. [2020-10-20 06:03:45,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-20 06:03:45,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-10-20 06:03:45,499 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 20 [2020-10-20 06:03:45,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:03:45,500 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-10-20 06:03:45,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:03:45,501 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-10-20 06:03:45,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:03:45,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:03:45,502 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 06:03:45,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 06:03:45,717 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-20 06:03:45,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:03:45,718 INFO L82 PathProgramCache]: Analyzing trace with hash 2015116195, now seen corresponding path program 1 times [2020-10-20 06:03:45,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:03:45,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173119480] [2020-10-20 06:03:45,719 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 06:03:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:45,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:03:45,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:45,974 INFO L350 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-10-20 06:03:45,975 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 06:03:45,976 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:46,026 INFO L625 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2020-10-20 06:03:46,033 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 06:03:46,037 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 06:03:46,037 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2020-10-20 06:03:46,038 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 06:03:46,065 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 06:03:46,067 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:46,069 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:46,069 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:03:46,070 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:3 [2020-10-20 06:03:46,080 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 06:03:46,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:03:46,145 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 06:03:46,153 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 06:03:46,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173119480] [2020-10-20 06:03:46,155 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-20 06:03:46,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1580039555] [2020-10-20 06:03:46,155 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 06:03:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:46,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:03:46,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:46,491 INFO L350 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-10-20 06:03:46,492 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 06:03:46,493 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:46,518 INFO L625 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2020-10-20 06:03:46,519 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 06:03:46,521 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 06:03:46,521 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2020-10-20 06:03:46,522 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 06:03:46,539 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 06:03:46,540 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:46,542 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:46,543 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:03:46,543 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:3 [2020-10-20 06:03:46,547 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 06:03:46,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:03:46,615 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 06:03:46,621 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 06:03:46,622 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:46,627 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:46,628 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:03:46,628 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:16 [2020-10-20 06:03:46,645 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 06:03:46,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:03:46,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-20 06:03:46,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154004324] [2020-10-20 06:03:46,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:03:46,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:03:46,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:03:46,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:03:46,649 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 5 states. [2020-10-20 06:03:46,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:03:46,847 INFO L93 Difference]: Finished difference Result 111 states and 120 transitions. [2020-10-20 06:03:46,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:03:46,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-20 06:03:46,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:03:46,851 INFO L225 Difference]: With dead ends: 111 [2020-10-20 06:03:46,851 INFO L226 Difference]: Without dead ends: 108 [2020-10-20 06:03:46,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:03:46,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-20 06:03:46,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 75. [2020-10-20 06:03:46,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-20 06:03:46,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-10-20 06:03:46,875 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 20 [2020-10-20 06:03:46,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:03:46,876 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-10-20 06:03:46,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:03:46,876 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-10-20 06:03:46,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:03:46,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:03:46,879 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 06:03:47,291 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 06:03:47,293 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-20 06:03:47,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:03:47,293 INFO L82 PathProgramCache]: Analyzing trace with hash 2015116196, now seen corresponding path program 1 times [2020-10-20 06:03:47,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:03:47,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356625486] [2020-10-20 06:03:47,295 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 06:03:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:47,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 06:03:47,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:47,475 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:47,476 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 06:03:47,476 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:47,503 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-10-20 06:03:47,505 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 06:03:47,505 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-10-20 06:03:47,534 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 06:03:47,535 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:47,540 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:47,541 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:03:47,541 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:7 [2020-10-20 06:03:47,560 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 06:03:47,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:03:47,748 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-20 06:03:47,762 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 06:03:47,763 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 06:03:47,789 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:47,790 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 06:03:47,790 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:28 [2020-10-20 06:03:47,867 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 06:03:47,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356625486] [2020-10-20 06:03:47,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:03:47,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-20 06:03:47,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355401833] [2020-10-20 06:03:47,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:03:47,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:03:47,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:03:47,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:03:47,870 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 6 states. [2020-10-20 06:03:48,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:03:48,210 INFO L93 Difference]: Finished difference Result 125 states and 131 transitions. [2020-10-20 06:03:48,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:03:48,210 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-20 06:03:48,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:03:48,212 INFO L225 Difference]: With dead ends: 125 [2020-10-20 06:03:48,212 INFO L226 Difference]: Without dead ends: 124 [2020-10-20 06:03:48,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:03:48,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-20 06:03:48,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 106. [2020-10-20 06:03:48,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-20 06:03:48,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2020-10-20 06:03:48,224 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 20 [2020-10-20 06:03:48,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:03:48,224 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2020-10-20 06:03:48,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:03:48,224 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2020-10-20 06:03:48,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 06:03:48,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:03:48,225 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 06:03:48,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 06:03:48,440 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-20 06:03:48,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:03:48,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1702507591, now seen corresponding path program 1 times [2020-10-20 06:03:48,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:03:48,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454849216] [2020-10-20 06:03:48,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-20 06:03:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:48,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:03:48,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:48,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:03:48,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:03:48,655 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 06:03:48,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454849216] [2020-10-20 06:03:48,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:03:48,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-20 06:03:48,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286425544] [2020-10-20 06:03:48,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:03:48,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:03:48,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:03:48,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:03:48,658 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand 5 states. [2020-10-20 06:03:48,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:03:48,691 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2020-10-20 06:03:48,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:03:48,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-20 06:03:48,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:03:48,694 INFO L225 Difference]: With dead ends: 104 [2020-10-20 06:03:48,694 INFO L226 Difference]: Without dead ends: 104 [2020-10-20 06:03:48,695 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 06:03:48,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-20 06:03:48,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-20 06:03:48,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-20 06:03:48,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2020-10-20 06:03:48,704 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 22 [2020-10-20 06:03:48,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:03:48,705 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2020-10-20 06:03:48,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:03:48,705 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2020-10-20 06:03:48,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 06:03:48,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:03:48,707 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 06:03:48,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-20 06:03:48,922 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-20 06:03:48,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:03:48,922 INFO L82 PathProgramCache]: Analyzing trace with hash -503576158, now seen corresponding path program 1 times [2020-10-20 06:03:48,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:03:48,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610932086] [2020-10-20 06:03:48,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-20 06:03:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:49,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:03:49,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:49,107 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 06:03:49,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:03:49,188 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 06:03:49,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610932086] [2020-10-20 06:03:49,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:03:49,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-10-20 06:03:49,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527556346] [2020-10-20 06:03:49,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:03:49,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:03:49,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:03:49,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:03:49,191 INFO L87 Difference]: Start difference. First operand 104 states and 123 transitions. Second operand 10 states. [2020-10-20 06:03:49,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:03:49,418 INFO L93 Difference]: Finished difference Result 118 states and 137 transitions. [2020-10-20 06:03:49,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:03:49,420 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-10-20 06:03:49,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:03:49,421 INFO L225 Difference]: With dead ends: 118 [2020-10-20 06:03:49,421 INFO L226 Difference]: Without dead ends: 114 [2020-10-20 06:03:49,422 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 06:03:49,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-20 06:03:49,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 108. [2020-10-20 06:03:49,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-20 06:03:49,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 126 transitions. [2020-10-20 06:03:49,432 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 126 transitions. Word has length 22 [2020-10-20 06:03:49,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:03:49,432 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 126 transitions. [2020-10-20 06:03:49,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:03:49,432 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 126 transitions. [2020-10-20 06:03:49,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 06:03:49,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:03:49,433 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 06:03:49,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-20 06:03:49,647 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-20 06:03:49,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:03:49,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1238127481, now seen corresponding path program 1 times [2020-10-20 06:03:49,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:03:49,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830856271] [2020-10-20 06:03:49,648 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 06:03:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:49,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:03:49,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:49,918 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 06:03:49,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:03:50,026 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 06:03:50,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830856271] [2020-10-20 06:03:50,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:03:50,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2020-10-20 06:03:50,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999612965] [2020-10-20 06:03:50,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:03:50,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:03:50,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:03:50,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:03:50,028 INFO L87 Difference]: Start difference. First operand 108 states and 126 transitions. Second operand 10 states. [2020-10-20 06:03:50,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:03:50,321 INFO L93 Difference]: Finished difference Result 118 states and 125 transitions. [2020-10-20 06:03:50,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:03:50,322 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-10-20 06:03:50,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:03:50,323 INFO L225 Difference]: With dead ends: 118 [2020-10-20 06:03:50,324 INFO L226 Difference]: Without dead ends: 118 [2020-10-20 06:03:50,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:03:50,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-20 06:03:50,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2020-10-20 06:03:50,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-20 06:03:50,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2020-10-20 06:03:50,332 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 23 [2020-10-20 06:03:50,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:03:50,332 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2020-10-20 06:03:50,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:03:50,333 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2020-10-20 06:03:50,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 06:03:50,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:03:50,334 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 06:03:50,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-20 06:03:50,546 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-20 06:03:50,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:03:50,547 INFO L82 PathProgramCache]: Analyzing trace with hash 272754043, now seen corresponding path program 1 times [2020-10-20 06:03:50,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:03:50,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [816242407] [2020-10-20 06:03:50,548 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 06:03:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:50,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:03:50,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:50,701 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 06:03:50,701 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:50,703 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:50,703 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:03:50,704 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:03:50,768 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 06:03:50,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:03:50,810 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 06:03:50,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [816242407] [2020-10-20 06:03:50,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:03:50,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2020-10-20 06:03:50,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621959656] [2020-10-20 06:03:50,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:03:50,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:03:50,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:03:50,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:03:50,812 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand 6 states. [2020-10-20 06:03:51,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:03:51,006 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2020-10-20 06:03:51,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:03:51,006 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-20 06:03:51,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:03:51,008 INFO L225 Difference]: With dead ends: 108 [2020-10-20 06:03:51,008 INFO L226 Difference]: Without dead ends: 108 [2020-10-20 06:03:51,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:03:51,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-20 06:03:51,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2020-10-20 06:03:51,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-20 06:03:51,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2020-10-20 06:03:51,014 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 24 [2020-10-20 06:03:51,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:03:51,015 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2020-10-20 06:03:51,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:03:51,015 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2020-10-20 06:03:51,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 06:03:51,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:03:51,016 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 06:03:51,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-20 06:03:51,230 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-20 06:03:51,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:03:51,230 INFO L82 PathProgramCache]: Analyzing trace with hash -232804582, now seen corresponding path program 1 times [2020-10-20 06:03:51,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:03:51,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998711716] [2020-10-20 06:03:51,234 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 06:03:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:51,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:03:51,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:51,407 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 06:03:51,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:03:51,457 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 06:03:51,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1998711716] [2020-10-20 06:03:51,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:03:51,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-20 06:03:51,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684673886] [2020-10-20 06:03:51,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:03:51,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:03:51,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:03:51,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:03:51,460 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand 5 states. [2020-10-20 06:03:51,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:03:51,490 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2020-10-20 06:03:51,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:03:51,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-20 06:03:51,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:03:51,492 INFO L225 Difference]: With dead ends: 68 [2020-10-20 06:03:51,492 INFO L226 Difference]: Without dead ends: 64 [2020-10-20 06:03:51,492 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 06:03:51,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-20 06:03:51,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-10-20 06:03:51,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-20 06:03:51,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2020-10-20 06:03:51,501 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 24 [2020-10-20 06:03:51,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:03:51,502 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2020-10-20 06:03:51,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:03:51,502 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2020-10-20 06:03:51,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 06:03:51,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:03:51,506 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 06:03:51,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-20 06:03:51,716 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-20 06:03:51,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:03:51,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1514319562, now seen corresponding path program 1 times [2020-10-20 06:03:51,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:03:51,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338307219] [2020-10-20 06:03:51,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-10-20 06:03:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:51,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 06:03:51,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:51,912 INFO L350 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-10-20 06:03:51,913 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 06:03:51,914 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:51,941 INFO L625 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2020-10-20 06:03:51,942 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 06:03:51,944 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 06:03:51,944 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2020-10-20 06:03:51,944 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 06:03:52,044 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:52,045 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 06:03:52,046 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:52,061 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-10-20 06:03:52,062 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 06:03:52,063 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2020-10-20 06:03:52,136 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 06:03:52,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:03:52,263 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 06:03:52,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338307219] [2020-10-20 06:03:52,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:03:52,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 8 [2020-10-20 06:03:52,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301645855] [2020-10-20 06:03:52,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:03:52,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:03:52,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:03:52,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:03:52,266 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 9 states. [2020-10-20 06:03:56,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:03:56,668 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2020-10-20 06:03:56,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:03:56,669 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-20 06:03:56,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:03:56,670 INFO L225 Difference]: With dead ends: 63 [2020-10-20 06:03:56,670 INFO L226 Difference]: Without dead ends: 63 [2020-10-20 06:03:56,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=65, Invalid=116, Unknown=1, NotChecked=0, Total=182 [2020-10-20 06:03:56,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-20 06:03:56,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-20 06:03:56,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-20 06:03:56,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2020-10-20 06:03:56,674 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 28 [2020-10-20 06:03:56,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:03:56,674 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2020-10-20 06:03:56,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:03:56,675 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2020-10-20 06:03:56,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 06:03:56,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:03:56,676 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 06:03:56,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-10-20 06:03:56,883 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-20 06:03:56,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:03:56,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1514319563, now seen corresponding path program 1 times [2020-10-20 06:03:56,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:03:56,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [805843100] [2020-10-20 06:03:56,886 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 06:03:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:03:57,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-20 06:03:57,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:03:57,068 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:57,068 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 06:03:57,069 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:57,095 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-10-20 06:03:57,096 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 06:03:57,096 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-10-20 06:03:57,224 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:03:57,225 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 06:03:57,226 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:03:57,249 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-10-20 06:03:57,250 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 06:03:57,251 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:14 [2020-10-20 06:03:57,345 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 06:03:57,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:03:57,595 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 06:03:58,683 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 06:03:58,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [805843100] [2020-10-20 06:03:58,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:03:58,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2020-10-20 06:03:58,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759196783] [2020-10-20 06:03:58,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-20 06:03:58,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:03:58,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-20 06:03:58,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-20 06:03:58,685 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 15 states. [2020-10-20 06:03:59,834 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-10-20 06:04:01,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:04:01,619 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2020-10-20 06:04:01,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 06:04:01,620 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2020-10-20 06:04:01,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:04:01,621 INFO L225 Difference]: With dead ends: 61 [2020-10-20 06:04:01,621 INFO L226 Difference]: Without dead ends: 61 [2020-10-20 06:04:01,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-20 06:04:01,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-20 06:04:01,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-20 06:04:01,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-20 06:04:01,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-10-20 06:04:01,624 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 28 [2020-10-20 06:04:01,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:04:01,625 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-10-20 06:04:01,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-20 06:04:01,625 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-10-20 06:04:01,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-20 06:04:01,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:04:01,631 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 06:04:01,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-10-20 06:04:01,838 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2020-10-20 06:04:01,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:04:01,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1727877462, now seen corresponding path program 1 times [2020-10-20 06:04:01,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:04:01,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077189181] [2020-10-20 06:04:01,840 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 06:04:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:04:01,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-20 06:04:01,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:04:02,026 INFO L350 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-10-20 06:04:02,027 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 06:04:02,028 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:04:02,053 INFO L625 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2020-10-20 06:04:02,054 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 06:04:02,055 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 06:04:02,055 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2020-10-20 06:04:02,056 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 06:04:02,072 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 06:04:02,073 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:04:02,075 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:04:02,075 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:04:02,075 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:3 [2020-10-20 06:04:02,132 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 06:04:02,133 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:04:02,136 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:04:02,137 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 06:04:02,137 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2020-10-20 06:04:04,218 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:04:04,218 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 06:04:04,220 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 06:04:04,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077189181] [2020-10-20 06:04:04,221 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-20 06:04:04,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1160199501] [2020-10-20 06:04:04,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 06:04:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:04:04,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-20 06:04:04,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:04:04,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:04:04,540 INFO L350 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2020-10-20 06:04:04,541 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 06:04:04,541 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:04:04,557 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:04:04,558 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:04:04,561 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 06:04:04,561 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:23 [2020-10-20 06:04:04,561 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:04:04,606 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 06:04:04,606 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-20 06:04:04,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033255837] [2020-10-20 06:04:04,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:04:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:04:04,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-20 06:04:04,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:04:04,782 INFO L350 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-10-20 06:04:04,782 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 06:04:04,783 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:04:04,823 INFO L625 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2020-10-20 06:04:04,824 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 06:04:04,825 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 06:04:04,826 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2020-10-20 06:04:04,826 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 06:04:04,833 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 06:04:04,834 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:04:04,836 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:04:04,836 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:04:04,836 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:3 [2020-10-20 06:04:04,842 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 06:04:04,843 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:04:04,845 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:04:04,846 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 06:04:04,846 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2020-10-20 06:04:04,912 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:04:04,913 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 06:04:04,917 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 06:04:04,918 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-20 06:04:04,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:04:04,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 06:04:04,921 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 06:04:04,921 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:04:05,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3,14 cvc4 --incremental --print-success --lang smt --rewrite-divk,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:04:05,553 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 06:04:05,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:04:05 BoogieIcfgContainer [2020-10-20 06:04:05,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:04:05,554 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:04:05,554 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:04:05,554 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:04:05,555 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:03:44" (3/4) ... [2020-10-20 06:04:05,557 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:04:05,558 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:04:05,559 INFO L168 Benchmark]: Toolchain (without parser) took 23542.70 ms. Allocated memory was 34.1 MB in the beginning and 119.0 MB in the end (delta: 84.9 MB). Free memory was 6.1 MB in the beginning and 76.0 MB in the end (delta: -69.9 MB). Peak memory consumption was 15.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:04:05,559 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 34.1 MB. Free memory is still 13.1 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:04:05,560 INFO L168 Benchmark]: CACSL2BoogieTranslator took 891.50 ms. Allocated memory was 34.1 MB in the beginning and 48.2 MB in the end (delta: 14.2 MB). Free memory was 5.2 MB in the beginning and 30.1 MB in the end (delta: -25.0 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:04:05,560 INFO L168 Benchmark]: Boogie Preprocessor took 115.38 ms. Allocated memory is still 48.2 MB. Free memory was 30.1 MB in the beginning and 24.8 MB in the end (delta: 5.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:04:05,560 INFO L168 Benchmark]: RCFGBuilder took 1602.68 ms. Allocated memory was 48.2 MB in the beginning and 60.3 MB in the end (delta: 12.1 MB). Free memory was 24.5 MB in the beginning and 37.2 MB in the end (delta: -12.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:04:05,561 INFO L168 Benchmark]: TraceAbstraction took 20919.23 ms. Allocated memory was 60.3 MB in the beginning and 119.0 MB in the end (delta: 58.7 MB). Free memory was 36.6 MB in the beginning and 77.5 MB in the end (delta: -40.9 MB). Peak memory consumption was 17.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:04:05,561 INFO L168 Benchmark]: Witness Printer took 3.51 ms. Allocated memory is still 119.0 MB. Free memory was 77.5 MB in the beginning and 76.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:04:05,563 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 34.1 MB. Free memory is still 13.1 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 891.50 ms. Allocated memory was 34.1 MB in the beginning and 48.2 MB in the end (delta: 14.2 MB). Free memory was 5.2 MB in the beginning and 30.1 MB in the end (delta: -25.0 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 115.38 ms. Allocated memory is still 48.2 MB. Free memory was 30.1 MB in the beginning and 24.8 MB in the end (delta: 5.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1602.68 ms. Allocated memory was 48.2 MB in the beginning and 60.3 MB in the end (delta: 12.1 MB). Free memory was 24.5 MB in the beginning and 37.2 MB in the end (delta: -12.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 20919.23 ms. Allocated memory was 60.3 MB in the beginning and 119.0 MB in the end (delta: 58.7 MB). Free memory was 36.6 MB in the beginning and 77.5 MB in the end (delta: -40.9 MB). Peak memory consumption was 17.8 MB. Max. memory is 14.3 GB. * Witness Printer took 3.51 ms. Allocated memory is still 119.0 MB. Free memory was 77.5 MB in the beginning and 76.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 790]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L784] struct A a6; [L793] CALL entry_point() [L786] CALL, EXPR probe3_6(&a6) [L764] int ret = - -3; [L765] CALL, EXPR ldv_malloc(sizeof(int)) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L765] RET, EXPR ldv_malloc(sizeof(int)) [L765] int *p = (int *)ldv_malloc(sizeof(int)); [L766] COND FALSE !(p==0) [L768] CALL, EXPR f6() [L758] return __VERIFIER_nondet_int(); [L768] RET, EXPR f6() [L768] ret = f6() [L769] COND TRUE ret<0 [L778] free(p) [L778] free(p) [L778] free(p) [L779] return ret; [L786] RET, EXPR probe3_6(&a6) [L786] int ret = probe3_6(&a6); [L787] COND FALSE !(ret==0) [L790] a6.p = 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 51 procedures, 379 locations, 86 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 20.8s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 620 SDtfs, 692 SDslu, 1465 SDs, 0 SdLazy, 849 SolverSat, 163 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 499 GetRequests, 405 SyntacticMatches, 21 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=139occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 92 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 442 ConstructedInterpolants, 37 QuantifiedInterpolants, 54055 SizeOfPredicates, 34 NumberOfNonLiveVariables, 1097 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...