./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/stroeder1-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/stroeder1-alloca-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1643f1caf494dad598b4df826effeedd3e612fb8 ............................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/stroeder1-alloca-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1643f1caf494dad598b4df826effeedd3e612fb8 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 17:58:52,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 17:58:52,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 17:58:52,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 17:58:52,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 17:58:53,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 17:58:53,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 17:58:53,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 17:58:53,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 17:58:53,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 17:58:53,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 17:58:53,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 17:58:53,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 17:58:53,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 17:58:53,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 17:58:53,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 17:58:53,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 17:58:53,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 17:58:53,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 17:58:53,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 17:58:53,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 17:58:53,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 17:58:53,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 17:58:53,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 17:58:53,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 17:58:53,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 17:58:53,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 17:58:53,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 17:58:53,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 17:58:53,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 17:58:53,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 17:58:53,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 17:58:53,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 17:58:53,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 17:58:53,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 17:58:53,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 17:58:53,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 17:58:53,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 17:58:53,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 17:58:53,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 17:58:53,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 17:58:53,048 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 17:58:53,072 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 17:58:53,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 17:58:53,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 17:58:53,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 17:58:53,075 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 17:58:53,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 17:58:53,076 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 17:58:53,076 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 17:58:53,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 17:58:53,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 17:58:53,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 17:58:53,077 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 17:58:53,077 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 17:58:53,078 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 17:58:53,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 17:58:53,078 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 17:58:53,078 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 17:58:53,079 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 17:58:53,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 17:58:53,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 17:58:53,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 17:58:53,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 17:58:53,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 17:58:53,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 17:58:53,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 17:58:53,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 17:58:53,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 17:58:53,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 17:58:53,082 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 -> 1643f1caf494dad598b4df826effeedd3e612fb8 [2020-10-19 17:58:53,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 17:58:53,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 17:58:53,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 17:58:53,453 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 17:58:53,454 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 17:58:53,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/stroeder1-alloca-1.i [2020-10-19 17:58:53,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e602f941f/ec208930909b472fb5ad0147ee58ecf6/FLAGf77c63bf2 [2020-10-19 17:58:54,090 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 17:58:54,091 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/stroeder1-alloca-1.i [2020-10-19 17:58:54,108 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e602f941f/ec208930909b472fb5ad0147ee58ecf6/FLAGf77c63bf2 [2020-10-19 17:58:54,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e602f941f/ec208930909b472fb5ad0147ee58ecf6 [2020-10-19 17:58:54,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 17:58:54,377 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 17:58:54,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 17:58:54,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 17:58:54,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 17:58:54,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:58:54" (1/1) ... [2020-10-19 17:58:54,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea562fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:58:54, skipping insertion in model container [2020-10-19 17:58:54,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:58:54" (1/1) ... [2020-10-19 17:58:54,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 17:58:54,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 17:58:54,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:58:54,868 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2020-10-19 17:58:54,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@55abf813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:58:54, skipping insertion in model container [2020-10-19 17:58:54,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 17:58:54,870 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2020-10-19 17:58:54,873 INFO L168 Benchmark]: Toolchain (without parser) took 501.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -155.5 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. [2020-10-19 17:58:54,874 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 17:58:54,875 INFO L168 Benchmark]: CACSL2BoogieTranslator took 491.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -160.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2020-10-19 17:58:54,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 491.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -160.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 529]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-906a4fb [2020-10-19 17:58:56,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 17:58:56,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 17:58:56,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 17:58:56,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 17:58:56,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 17:58:56,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 17:58:56,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 17:58:56,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 17:58:56,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 17:58:56,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 17:58:56,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 17:58:56,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 17:58:56,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 17:58:56,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 17:58:56,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 17:58:56,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 17:58:56,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 17:58:56,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 17:58:56,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 17:58:56,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 17:58:56,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 17:58:56,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 17:58:56,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 17:58:56,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 17:58:56,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 17:58:56,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 17:58:56,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 17:58:56,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 17:58:56,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 17:58:56,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 17:58:56,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 17:58:56,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 17:58:56,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 17:58:56,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 17:58:56,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 17:58:56,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 17:58:56,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 17:58:56,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 17:58:56,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 17:58:56,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 17:58:56,727 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-19 17:58:56,751 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 17:58:56,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 17:58:56,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 17:58:56,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 17:58:56,753 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 17:58:56,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 17:58:56,753 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 17:58:56,754 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 17:58:56,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 17:58:56,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 17:58:56,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 17:58:56,754 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 17:58:56,755 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 17:58:56,755 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 17:58:56,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 17:58:56,755 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 17:58:56,756 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 17:58:56,756 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 17:58:56,756 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 17:58:56,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 17:58:56,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 17:58:56,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 17:58:56,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 17:58:56,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 17:58:56,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 17:58:56,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 17:58:56,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 17:58:56,758 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 17:58:56,758 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 17:58:56,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 17:58:56,759 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 17:58:56,759 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 -> 1643f1caf494dad598b4df826effeedd3e612fb8 [2020-10-19 17:58:57,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 17:58:57,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 17:58:57,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 17:58:57,102 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 17:58:57,103 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 17:58:57,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/stroeder1-alloca-1.i [2020-10-19 17:58:57,163 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c6b4bdd9/f93b0b47db254f19ba4cad6aff9f8a14/FLAG9f3714446 [2020-10-19 17:58:57,593 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 17:58:57,594 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/stroeder1-alloca-1.i [2020-10-19 17:58:57,608 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c6b4bdd9/f93b0b47db254f19ba4cad6aff9f8a14/FLAG9f3714446 [2020-10-19 17:58:57,914 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c6b4bdd9/f93b0b47db254f19ba4cad6aff9f8a14 [2020-10-19 17:58:57,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 17:58:57,925 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 17:58:57,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 17:58:57,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 17:58:57,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 17:58:57,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:58:57" (1/1) ... [2020-10-19 17:58:57,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2382e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:58:57, skipping insertion in model container [2020-10-19 17:58:57,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:58:57" (1/1) ... [2020-10-19 17:58:57,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 17:58:57,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 17:58:58,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:58:58,324 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-10-19 17:58:58,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 17:58:58,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:58:58,467 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 17:58:58,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:58:58,590 INFO L208 MainTranslator]: Completed translation [2020-10-19 17:58:58,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:58:58 WrapperNode [2020-10-19 17:58:58,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 17:58:58,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 17:58:58,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 17:58:58,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 17:58:58,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:58:58" (1/1) ... [2020-10-19 17:58:58,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:58:58" (1/1) ... [2020-10-19 17:58:58,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:58:58" (1/1) ... [2020-10-19 17:58:58,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:58:58" (1/1) ... [2020-10-19 17:58:58,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:58:58" (1/1) ... [2020-10-19 17:58:58,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:58:58" (1/1) ... [2020-10-19 17:58:58,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:58:58" (1/1) ... [2020-10-19 17:58:58,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 17:58:58,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 17:58:58,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 17:58:58,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 17:58:58,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:58:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 17:58:58,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 17:58:58,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 17:58:58,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 17:58:58,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 17:58:58,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 17:58:58,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 17:58:58,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 17:58:58,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 17:58:58,774 INFO L138 BoogieDeclarations]: Found implementation of procedure sumOfThirdBytes [2020-10-19 17:58:58,774 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 17:58:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 17:58:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 17:58:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 17:58:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 17:58:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 17:58:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 17:58:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 17:58:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 17:58:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 17:58:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 17:58:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 17:58:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 17:58:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 17:58:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 17:58:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 17:58:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 17:58:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 17:58:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 17:58:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 17:58:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 17:58:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 17:58:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 17:58:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 17:58:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 17:58:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 17:58:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 17:58:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 17:58:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 17:58:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 17:58:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 17:58:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 17:58:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 17:58:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 17:58:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 17:58:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 17:58:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 17:58:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 17:58:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 17:58:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 17:58:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 17:58:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 17:58:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 17:58:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 17:58:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 17:58:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 17:58:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 17:58:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 17:58:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 17:58:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 17:58:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 17:58:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 17:58:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 17:58:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 17:58:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 17:58:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 17:58:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 17:58:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 17:58:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 17:58:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 17:58:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 17:58:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 17:58:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 17:58:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 17:58:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 17:58:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 17:58:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 17:58:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 17:58:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 17:58:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 17:58:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 17:58:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 17:58:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 17:58:58,786 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 17:58:58,786 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 17:58:58,786 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 17:58:58,786 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 17:58:58,786 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 17:58:58,786 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 17:58:58,786 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 17:58:58,786 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 17:58:58,787 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 17:58:58,787 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 17:58:58,787 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 17:58:58,787 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 17:58:58,787 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 17:58:58,787 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 17:58:58,787 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 17:58:58,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 17:58:58,788 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 17:58:58,788 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 17:58:58,788 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 17:58:58,788 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 17:58:58,788 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 17:58:58,788 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 17:58:58,789 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 17:58:58,789 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 17:58:58,789 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 17:58:58,789 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 17:58:58,789 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 17:58:58,789 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 17:58:58,789 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 17:58:58,790 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 17:58:58,790 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 17:58:58,790 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 17:58:58,790 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 17:58:58,790 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 17:58:58,790 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 17:58:58,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 17:58:58,791 INFO L130 BoogieDeclarations]: Found specification of procedure sumOfThirdBytes [2020-10-19 17:58:58,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-19 17:58:58,791 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 17:58:58,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 17:58:58,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-19 17:58:58,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 17:58:58,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 17:58:58,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 17:58:58,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 17:58:58,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-19 17:58:58,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-19 17:58:59,478 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 17:58:59,478 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-19 17:58:59,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:58:59 BoogieIcfgContainer [2020-10-19 17:58:59,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 17:58:59,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 17:58:59,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 17:58:59,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 17:58:59,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 05:58:57" (1/3) ... [2020-10-19 17:58:59,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33cdfe02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 05:58:59, skipping insertion in model container [2020-10-19 17:58:59,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:58:58" (2/3) ... [2020-10-19 17:58:59,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33cdfe02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 05:58:59, skipping insertion in model container [2020-10-19 17:58:59,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:58:59" (3/3) ... [2020-10-19 17:58:59,492 INFO L111 eAbstractionObserver]: Analyzing ICFG stroeder1-alloca-1.i [2020-10-19 17:58:59,506 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 17:58:59,514 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-19 17:58:59,530 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-19 17:58:59,553 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 17:58:59,554 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 17:58:59,554 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 17:58:59,554 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 17:58:59,555 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 17:58:59,555 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 17:58:59,555 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 17:58:59,555 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 17:58:59,571 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-19 17:58:59,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 17:58:59,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:59,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:59,584 INFO L429 AbstractCegarLoop]: === Iteration 1 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:58:59,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:59,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1988697556, now seen corresponding path program 1 times [2020-10-19 17:58:59,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:58:59,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453350761] [2020-10-19 17:58:59,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-19 17:58:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:59,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 17:58:59,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:59,864 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 17:58:59,865 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:59,880 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:59,881 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:58:59,882 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-19 17:58:59,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:59,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:59:00,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:59:00,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453350761] [2020-10-19 17:59:00,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:59:00,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-19 17:59:00,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630801606] [2020-10-19 17:59:00,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 17:59:00,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:59:00,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 17:59:00,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:59:00,111 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 6 states. [2020-10-19 17:59:00,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:59:00,613 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-10-19 17:59:00,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 17:59:00,616 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-19 17:59:00,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:59:00,627 INFO L225 Difference]: With dead ends: 56 [2020-10-19 17:59:00,628 INFO L226 Difference]: Without dead ends: 51 [2020-10-19 17:59:00,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-19 17:59:00,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-19 17:59:00,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32. [2020-10-19 17:59:00,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-19 17:59:00,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-19 17:59:00,680 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 10 [2020-10-19 17:59:00,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:59:00,681 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-19 17:59:00,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 17:59:00,681 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-19 17:59:00,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 17:59:00,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:59:00,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:59:00,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 17:59:00,889 INFO L429 AbstractCegarLoop]: === Iteration 2 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:59:00,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:59:00,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1988697557, now seen corresponding path program 1 times [2020-10-19 17:59:00,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:59:00,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546494959] [2020-10-19 17:59:00,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-19 17:59:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:01,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 17:59:01,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:01,022 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 17:59:01,022 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:59:01,025 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:59:01,026 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:59:01,026 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 17:59:01,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:59:01,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:59:01,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:59:01,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546494959] [2020-10-19 17:59:01,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:59:01,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-19 17:59:01,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411361773] [2020-10-19 17:59:01,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 17:59:01,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:59:01,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 17:59:01,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 17:59:01,053 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 3 states. [2020-10-19 17:59:01,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:59:01,102 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-10-19 17:59:01,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 17:59:01,103 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-19 17:59:01,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:59:01,104 INFO L225 Difference]: With dead ends: 31 [2020-10-19 17:59:01,104 INFO L226 Difference]: Without dead ends: 31 [2020-10-19 17:59:01,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 17:59:01,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-19 17:59:01,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-19 17:59:01,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-19 17:59:01,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-19 17:59:01,112 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 10 [2020-10-19 17:59:01,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:59:01,112 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-19 17:59:01,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 17:59:01,112 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-19 17:59:01,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 17:59:01,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:59:01,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:59:01,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 17:59:01,331 INFO L429 AbstractCegarLoop]: === Iteration 3 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:59:01,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:59:01,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1264341451, now seen corresponding path program 1 times [2020-10-19 17:59:01,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:59:01,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451790660] [2020-10-19 17:59:01,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-19 17:59:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:01,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 17:59:01,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:01,449 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 17:59:01,449 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:59:01,452 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:59:01,453 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:59:01,453 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 17:59:01,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:59:01,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:59:01,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:59:01,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451790660] [2020-10-19 17:59:01,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:59:01,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-19 17:59:01,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476490299] [2020-10-19 17:59:01,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 17:59:01,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:59:01,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 17:59:01,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:59:01,545 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 6 states. [2020-10-19 17:59:01,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:59:01,706 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2020-10-19 17:59:01,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 17:59:01,707 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-19 17:59:01,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:59:01,710 INFO L225 Difference]: With dead ends: 34 [2020-10-19 17:59:01,710 INFO L226 Difference]: Without dead ends: 34 [2020-10-19 17:59:01,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:59:01,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-19 17:59:01,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2020-10-19 17:59:01,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-19 17:59:01,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-10-19 17:59:01,716 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 13 [2020-10-19 17:59:01,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:59:01,717 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-10-19 17:59:01,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 17:59:01,717 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-10-19 17:59:01,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 17:59:01,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:59:01,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:59:01,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 17:59:01,919 INFO L429 AbstractCegarLoop]: === Iteration 4 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:59:01,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:59:01,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1264341452, now seen corresponding path program 1 times [2020-10-19 17:59:01,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:59:01,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631247353] [2020-10-19 17:59:01,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-19 17:59:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:02,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 17:59:02,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:02,063 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 8 treesize of output 7 [2020-10-19 17:59:02,063 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:59:02,083 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:59:02,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631247353] [2020-10-19 17:59:02,087 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 17:59:02,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1791316671] [2020-10-19 17:59:02,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 17:59:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:02,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 17:59:02,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:02,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:59:02,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:59:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:59:02,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:59:02,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-19 17:59:02,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709620619] [2020-10-19 17:59:02,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 17:59:02,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:59:02,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 17:59:02,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:59:02,349 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 6 states. [2020-10-19 17:59:02,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:59:02,444 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-10-19 17:59:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 17:59:02,446 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-19 17:59:02,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:59:02,447 INFO L225 Difference]: With dead ends: 32 [2020-10-19 17:59:02,447 INFO L226 Difference]: Without dead ends: 32 [2020-10-19 17:59:02,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-19 17:59:02,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-19 17:59:02,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2020-10-19 17:59:02,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-19 17:59:02,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-19 17:59:02,455 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 13 [2020-10-19 17:59:02,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:59:02,456 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-19 17:59:02,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 17:59:02,457 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-19 17:59:02,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 17:59:02,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:59:02,458 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:59:02,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3,6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 17:59:02,860 INFO L429 AbstractCegarLoop]: === Iteration 5 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:59:02,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:59:02,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1369229423, now seen corresponding path program 1 times [2020-10-19 17:59:02,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:59:02,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422742067] [2020-10-19 17:59:02,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-19 17:59:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:02,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 17:59:02,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:03,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:59:03,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:59:03,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422742067] [2020-10-19 17:59:03,062 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 17:59:03,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [987023877] [2020-10-19 17:59:03,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 17:59:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:03,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 17:59:03,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:03,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:59:03,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:59:03,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:59:03,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:59:03,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-10-19 17:59:03,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448134167] [2020-10-19 17:59:03,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 17:59:03,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:59:03,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 17:59:03,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:59:03,316 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 8 states. [2020-10-19 17:59:03,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:59:03,387 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-10-19 17:59:03,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 17:59:03,388 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-19 17:59:03,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:59:03,389 INFO L225 Difference]: With dead ends: 38 [2020-10-19 17:59:03,389 INFO L226 Difference]: Without dead ends: 38 [2020-10-19 17:59:03,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:59:03,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-19 17:59:03,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-10-19 17:59:03,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-19 17:59:03,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-10-19 17:59:03,395 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 14 [2020-10-19 17:59:03,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:59:03,396 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-10-19 17:59:03,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 17:59:03,396 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-10-19 17:59:03,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 17:59:03,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:59:03,397 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:59:03,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3,8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 17:59:03,810 INFO L429 AbstractCegarLoop]: === Iteration 6 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:59:03,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:59:03,810 INFO L82 PathProgramCache]: Analyzing trace with hash 559882797, now seen corresponding path program 1 times [2020-10-19 17:59:03,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:59:03,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496905016] [2020-10-19 17:59:03,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-19 17:59:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:03,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 17:59:03,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:03,932 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 8 treesize of output 7 [2020-10-19 17:59:03,933 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:59:03,952 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:59:03,953 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:59:03,953 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:22 [2020-10-19 17:59:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:59:04,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:59:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:59:04,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496905016] [2020-10-19 17:59:04,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:59:04,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-19 17:59:04,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250558913] [2020-10-19 17:59:04,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 17:59:04,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:59:04,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 17:59:04,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-19 17:59:04,458 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 10 states. [2020-10-19 17:59:04,851 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-10-19 17:59:05,078 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-10-19 17:59:05,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:59:05,450 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2020-10-19 17:59:05,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 17:59:05,452 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-19 17:59:05,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:59:05,453 INFO L225 Difference]: With dead ends: 54 [2020-10-19 17:59:05,453 INFO L226 Difference]: Without dead ends: 54 [2020-10-19 17:59:05,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2020-10-19 17:59:05,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-19 17:59:05,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2020-10-19 17:59:05,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-19 17:59:05,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-10-19 17:59:05,459 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2020-10-19 17:59:05,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:59:05,459 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-10-19 17:59:05,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 17:59:05,460 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-10-19 17:59:05,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 17:59:05,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:59:05,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:59:05,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-19 17:59:05,663 INFO L429 AbstractCegarLoop]: === Iteration 7 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:59:05,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:59:05,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1408674343, now seen corresponding path program 1 times [2020-10-19 17:59:05,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:59:05,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237224674] [2020-10-19 17:59:05,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-19 17:59:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:05,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-19 17:59:05,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:05,773 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 17:59:05,773 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:59:05,779 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:59:05,779 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:59:05,780 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 17:59:05,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:59:05,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:59:06,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:59:06,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237224674] [2020-10-19 17:59:06,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:59:06,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-10-19 17:59:06,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061309351] [2020-10-19 17:59:06,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 17:59:06,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:59:06,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 17:59:06,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-19 17:59:06,191 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 12 states. [2020-10-19 17:59:06,902 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-10-19 17:59:07,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:59:07,433 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2020-10-19 17:59:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-19 17:59:07,434 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-10-19 17:59:07,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:59:07,437 INFO L225 Difference]: With dead ends: 77 [2020-10-19 17:59:07,437 INFO L226 Difference]: Without dead ends: 77 [2020-10-19 17:59:07,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2020-10-19 17:59:07,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-19 17:59:07,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 48. [2020-10-19 17:59:07,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-19 17:59:07,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2020-10-19 17:59:07,444 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 17 [2020-10-19 17:59:07,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:59:07,445 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2020-10-19 17:59:07,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 17:59:07,445 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2020-10-19 17:59:07,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 17:59:07,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:59:07,446 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] [2020-10-19 17:59:07,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-19 17:59:07,647 INFO L429 AbstractCegarLoop]: === Iteration 8 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:59:07,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:59:07,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1009453957, now seen corresponding path program 1 times [2020-10-19 17:59:07,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:59:07,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471545664] [2020-10-19 17:59:07,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-10-19 17:59:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:07,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 17:59:07,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:07,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471545664] [2020-10-19 17:59:07,753 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 17:59:07,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1474295420] [2020-10-19 17:59:07,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 17:59:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:07,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 17:59:07,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:07,942 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 17:59:07,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728118069] [2020-10-19 17:59:07,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:59:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:08,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 17:59:08,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:08,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:59:08,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:59:08,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:59:08,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:59:08,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-10-19 17:59:08,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087797146] [2020-10-19 17:59:08,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 17:59:08,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:59:08,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 17:59:08,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-19 17:59:08,131 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 7 states. [2020-10-19 17:59:08,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:59:08,226 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-10-19 17:59:08,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 17:59:08,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-19 17:59:08,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:59:08,228 INFO L225 Difference]: With dead ends: 57 [2020-10-19 17:59:08,228 INFO L226 Difference]: Without dead ends: 54 [2020-10-19 17:59:08,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:59:08,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-19 17:59:08,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-10-19 17:59:08,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-19 17:59:08,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2020-10-19 17:59:08,243 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 21 [2020-10-19 17:59:08,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:59:08,243 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2020-10-19 17:59:08,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 17:59:08,243 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2020-10-19 17:59:08,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 17:59:08,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:59:08,245 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:59:08,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 mathsat -unsat_core_generation=3 [2020-10-19 17:59:08,856 INFO L429 AbstractCegarLoop]: === Iteration 9 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:59:08,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:59:08,857 INFO L82 PathProgramCache]: Analyzing trace with hash -960728982, now seen corresponding path program 1 times [2020-10-19 17:59:08,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:59:08,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696632906] [2020-10-19 17:59:08,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-10-19 17:59:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:08,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 17:59:08,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:09,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:59:09,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:59:09,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:59:09,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696632906] [2020-10-19 17:59:09,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:59:09,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-10-19 17:59:09,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610939532] [2020-10-19 17:59:09,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 17:59:09,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:59:09,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 17:59:09,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-19 17:59:09,096 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand 10 states. [2020-10-19 17:59:09,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:59:09,204 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-10-19 17:59:09,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 17:59:09,205 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-10-19 17:59:09,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:59:09,206 INFO L225 Difference]: With dead ends: 61 [2020-10-19 17:59:09,207 INFO L226 Difference]: Without dead ends: 61 [2020-10-19 17:59:09,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-19 17:59:09,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-19 17:59:09,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2020-10-19 17:59:09,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-19 17:59:09,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2020-10-19 17:59:09,221 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 21 [2020-10-19 17:59:09,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:59:09,222 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2020-10-19 17:59:09,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 17:59:09,222 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-10-19 17:59:09,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 17:59:09,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:59:09,223 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:59:09,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-10-19 17:59:09,431 INFO L429 AbstractCegarLoop]: === Iteration 10 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:59:09,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:59:09,432 INFO L82 PathProgramCache]: Analyzing trace with hash 2054374636, now seen corresponding path program 1 times [2020-10-19 17:59:09,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:59:09,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604934093] [2020-10-19 17:59:09,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-10-19 17:59:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:09,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-19 17:59:09,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:09,563 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 8 treesize of output 7 [2020-10-19 17:59:09,563 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:59:09,577 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:59:09,578 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:59:09,578 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:19 [2020-10-19 17:59:09,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:59:09,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:59:09,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604934093] [2020-10-19 17:59:09,902 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 17:59:09,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1348957668] [2020-10-19 17:59:09,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 16 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 17:59:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:10,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 17:59:10,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:10,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:59:10,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:59:10,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:59:10,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:59:10,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2020-10-19 17:59:10,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838985677] [2020-10-19 17:59:10,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-19 17:59:10,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:59:10,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-19 17:59:10,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2020-10-19 17:59:10,790 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 15 states. [2020-10-19 17:59:11,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:59:11,305 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2020-10-19 17:59:11,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 17:59:11,306 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 21 [2020-10-19 17:59:11,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:59:11,307 INFO L225 Difference]: With dead ends: 71 [2020-10-19 17:59:11,307 INFO L226 Difference]: Without dead ends: 71 [2020-10-19 17:59:11,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2020-10-19 17:59:11,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-19 17:59:11,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 58. [2020-10-19 17:59:11,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-19 17:59:11,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2020-10-19 17:59:11,314 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 21 [2020-10-19 17:59:11,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:59:11,315 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2020-10-19 17:59:11,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-19 17:59:11,315 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-10-19 17:59:11,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 17:59:11,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:59:11,316 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] [2020-10-19 17:59:11,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3,16 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 17:59:11,718 INFO L429 AbstractCegarLoop]: === Iteration 11 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:59:11,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:59:11,719 INFO L82 PathProgramCache]: Analyzing trace with hash 905437502, now seen corresponding path program 1 times [2020-10-19 17:59:11,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:59:11,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298613783] [2020-10-19 17:59:11,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2020-10-19 17:59:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:11,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 17:59:11,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:11,852 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 17:59:11,853 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:59:11,862 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:59:11,863 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:59:11,863 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 17:59:11,922 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:59:11,922 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 17 treesize of output 39 [2020-10-19 17:59:11,924 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:59:11,943 INFO L625 ElimStorePlain]: treesize reduction 10, result has 60.0 percent of original size [2020-10-19 17:59:11,945 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:59:11,949 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 17:59:11,949 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:15 [2020-10-19 17:59:11,950 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:59:11,966 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:59:11,989 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:59:12,005 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:59:12,021 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:59:12,035 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:59:12,049 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:59:12,063 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:59:12,077 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:59:12,091 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:59:12,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 17:59:12,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:59:14,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 17:59:14,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298613783] [2020-10-19 17:59:14,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:59:14,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2020-10-19 17:59:14,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689266354] [2020-10-19 17:59:14,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 17:59:14,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:59:14,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 17:59:14,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=50, Unknown=1, NotChecked=0, Total=72 [2020-10-19 17:59:14,199 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 9 states. [2020-10-19 17:59:14,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:59:14,367 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-10-19 17:59:14,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 17:59:14,369 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-19 17:59:14,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:59:14,370 INFO L225 Difference]: With dead ends: 57 [2020-10-19 17:59:14,370 INFO L226 Difference]: Without dead ends: 36 [2020-10-19 17:59:14,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 10 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=34, Invalid=75, Unknown=1, NotChecked=0, Total=110 [2020-10-19 17:59:14,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-19 17:59:14,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-19 17:59:14,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-19 17:59:14,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-10-19 17:59:14,379 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 25 [2020-10-19 17:59:14,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:59:14,380 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-10-19 17:59:14,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 17:59:14,380 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-10-19 17:59:14,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 17:59:14,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:59:14,382 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:59:14,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2020-10-19 17:59:14,594 INFO L429 AbstractCegarLoop]: === Iteration 12 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:59:14,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:59:14,594 INFO L82 PathProgramCache]: Analyzing trace with hash 517854665, now seen corresponding path program 2 times [2020-10-19 17:59:14,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:59:14,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612984985] [2020-10-19 17:59:14,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2020-10-19 17:59:14,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 17:59:14,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:59:14,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-19 17:59:14,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:14,758 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 8 treesize of output 7 [2020-10-19 17:59:14,758 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:59:14,773 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:59:14,774 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:59:14,774 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:19 [2020-10-19 17:59:15,010 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-19 17:59:15,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:59:15,618 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-19 17:59:15,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612984985] [2020-10-19 17:59:15,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:59:15,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-19 17:59:15,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829908112] [2020-10-19 17:59:15,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-19 17:59:15,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:59:15,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-19 17:59:15,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-19 17:59:15,620 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 14 states. [2020-10-19 17:59:16,682 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-19 17:59:17,036 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-19 17:59:17,273 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-10-19 17:59:17,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:59:17,510 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2020-10-19 17:59:17,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 17:59:17,517 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2020-10-19 17:59:17,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:59:17,517 INFO L225 Difference]: With dead ends: 50 [2020-10-19 17:59:17,518 INFO L226 Difference]: Without dead ends: 50 [2020-10-19 17:59:17,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2020-10-19 17:59:17,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-19 17:59:17,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-10-19 17:59:17,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-19 17:59:17,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-10-19 17:59:17,528 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 25 [2020-10-19 17:59:17,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:59:17,529 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-10-19 17:59:17,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-19 17:59:17,529 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-10-19 17:59:17,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 17:59:17,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:59:17,530 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:59:17,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2020-10-19 17:59:17,734 INFO L429 AbstractCegarLoop]: === Iteration 13 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:59:17,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:59:17,735 INFO L82 PathProgramCache]: Analyzing trace with hash -186380554, now seen corresponding path program 2 times [2020-10-19 17:59:17,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:59:17,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633187472] [2020-10-19 17:59:17,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2020-10-19 17:59:17,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 17:59:17,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:59:17,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 17:59:17,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:17,856 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 8 treesize of output 7 [2020-10-19 17:59:17,857 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:59:17,877 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:59:17,877 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:59:17,877 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:22 [2020-10-19 17:59:18,181 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:59:18,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:59:19,038 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-19 17:59:21,662 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:59:21,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633187472] [2020-10-19 17:59:21,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:59:21,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2020-10-19 17:59:21,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176680884] [2020-10-19 17:59:21,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-19 17:59:21,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:59:21,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-19 17:59:21,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=243, Unknown=1, NotChecked=0, Total=342 [2020-10-19 17:59:21,665 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 19 states. [2020-10-19 17:59:23,216 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-19 17:59:23,828 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-19 17:59:25,434 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-10-19 17:59:25,968 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-19 17:59:26,373 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-19 17:59:26,840 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-10-19 17:59:27,150 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-10-19 17:59:28,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:59:28,025 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2020-10-19 17:59:28,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-19 17:59:28,031 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 26 [2020-10-19 17:59:28,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:59:28,032 INFO L225 Difference]: With dead ends: 79 [2020-10-19 17:59:28,032 INFO L226 Difference]: Without dead ends: 79 [2020-10-19 17:59:28,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=325, Invalid=666, Unknown=1, NotChecked=0, Total=992 [2020-10-19 17:59:28,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-19 17:59:28,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 72. [2020-10-19 17:59:28,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-19 17:59:28,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2020-10-19 17:59:28,044 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 26 [2020-10-19 17:59:28,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:59:28,045 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2020-10-19 17:59:28,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-19 17:59:28,045 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2020-10-19 17:59:28,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 17:59:28,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:59:28,046 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:59:28,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3 [2020-10-19 17:59:28,247 INFO L429 AbstractCegarLoop]: === Iteration 14 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:59:28,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:59:28,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1808857362, now seen corresponding path program 3 times [2020-10-19 17:59:28,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:59:28,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89794800] [2020-10-19 17:59:28,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 20 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with mathsat -unsat_core_generation=3 [2020-10-19 17:59:28,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-19 17:59:28,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:59:28,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-19 17:59:28,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:28,434 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 8 treesize of output 7 [2020-10-19 17:59:28,435 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:59:28,452 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:59:28,453 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:59:28,453 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:22 [2020-10-19 17:59:28,887 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:59:28,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:59:31,998 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-10-19 17:59:32,307 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 17:59:33,040 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:59:33,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89794800] [2020-10-19 17:59:33,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:59:33,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 28 [2020-10-19 17:59:33,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44802747] [2020-10-19 17:59:33,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-19 17:59:33,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:59:33,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-19 17:59:33,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=627, Unknown=0, NotChecked=0, Total=756 [2020-10-19 17:59:33,043 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 28 states. [2020-10-19 17:59:35,605 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-10-19 17:59:36,399 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-10-19 17:59:37,254 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2020-10-19 17:59:37,803 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-10-19 17:59:38,733 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-19 17:59:39,305 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-10-19 17:59:40,095 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2020-10-19 17:59:40,779 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-19 17:59:41,451 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-10-19 17:59:42,026 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-19 17:59:42,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:59:42,750 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2020-10-19 17:59:42,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-19 17:59:42,752 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 37 [2020-10-19 17:59:42,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:59:42,753 INFO L225 Difference]: With dead ends: 89 [2020-10-19 17:59:42,753 INFO L226 Difference]: Without dead ends: 78 [2020-10-19 17:59:42,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=307, Invalid=1673, Unknown=0, NotChecked=0, Total=1980 [2020-10-19 17:59:42,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-19 17:59:42,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-19 17:59:42,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-19 17:59:42,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2020-10-19 17:59:42,765 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 37 [2020-10-19 17:59:42,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:59:42,766 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2020-10-19 17:59:42,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-19 17:59:42,766 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2020-10-19 17:59:42,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-19 17:59:42,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:59:42,769 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:59:42,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3 [2020-10-19 17:59:42,972 INFO L429 AbstractCegarLoop]: === Iteration 15 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:59:42,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:59:42,973 INFO L82 PathProgramCache]: Analyzing trace with hash -281161166, now seen corresponding path program 4 times [2020-10-19 17:59:42,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:59:42,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244112986] [2020-10-19 17:59:42,974 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 21 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with mathsat -unsat_core_generation=3 [2020-10-19 17:59:43,097 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-19 17:59:43,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:59:43,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-19 17:59:43,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:43,126 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 8 treesize of output 7 [2020-10-19 17:59:43,127 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:59:43,145 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:59:43,145 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:59:43,145 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:22 [2020-10-19 17:59:43,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244112986] [2020-10-19 17:59:43,337 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 17:59:43,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1972963055] [2020-10-19 17:59:43,338 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 22 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 17:59:43,628 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-19 17:59:43,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:59:43,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 17:59:43,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:44,008 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-19 17:59:44,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:59:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-19 17:59:44,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:59:44,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2020-10-19 17:59:44,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873413779] [2020-10-19 17:59:44,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-19 17:59:44,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:59:44,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-19 17:59:44,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2020-10-19 17:59:44,533 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand 23 states. [2020-10-19 17:59:45,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:59:45,271 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2020-10-19 17:59:45,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-19 17:59:45,272 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 45 [2020-10-19 17:59:45,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:59:45,273 INFO L225 Difference]: With dead ends: 91 [2020-10-19 17:59:45,273 INFO L226 Difference]: Without dead ends: 76 [2020-10-19 17:59:45,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=160, Invalid=962, Unknown=0, NotChecked=0, Total=1122 [2020-10-19 17:59:45,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-19 17:59:45,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-19 17:59:45,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-19 17:59:45,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2020-10-19 17:59:45,277 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 45 [2020-10-19 17:59:45,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:59:45,278 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2020-10-19 17:59:45,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-19 17:59:45,278 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2020-10-19 17:59:45,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-19 17:59:45,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:59:45,280 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:59:45,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 mathsat -unsat_core_generation=3,22 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 17:59:45,685 INFO L429 AbstractCegarLoop]: === Iteration 16 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:59:45,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:59:45,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1096098801, now seen corresponding path program 5 times [2020-10-19 17:59:45,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:59:45,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582343059] [2020-10-19 17:59:45,687 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 23 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with mathsat -unsat_core_generation=3 [2020-10-19 17:59:45,888 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-19 17:59:45,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:59:45,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 33 conjunts are in the unsatisfiable core [2020-10-19 17:59:45,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:45,915 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 8 treesize of output 7 [2020-10-19 17:59:45,915 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:59:45,934 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:59:45,935 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:59:45,935 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:22 [2020-10-19 17:59:47,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582343059] [2020-10-19 17:59:47,065 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 17:59:47,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1145752992] [2020-10-19 17:59:47,065 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 24 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 17:59:48,909 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-19 17:59:48,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:59:48,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-19 17:59:48,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:49,793 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 21 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:59:49,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:59:50,054 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 17:59:50,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122382350] [2020-10-19 17:59:50,054 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:59:52,393 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-19 17:59:52,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:59:52,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-19 17:59:52,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:53,281 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 21 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:59:53,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:59:53,483 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 17:59:53,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:59:53,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-19 17:59:53,484 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-19 17:59:53,484 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 17:59:54,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 mathsat -unsat_core_generation=3,24 cvc4 --incremental --print-success --lang smt --rewrite-divk,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:59:54,108 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-19 17:59:54,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 05:59:54 BoogieIcfgContainer [2020-10-19 17:59:54,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 17:59:54,109 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 17:59:54,109 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 17:59:54,110 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 17:59:54,110 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:58:59" (3/4) ... [2020-10-19 17:59:54,113 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 17:59:54,113 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 17:59:54,114 INFO L168 Benchmark]: Toolchain (without parser) took 56195.33 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 327.7 MB). Free memory was 953.2 MB in the beginning and 885.3 MB in the end (delta: 68.0 MB). Peak memory consumption was 395.7 MB. Max. memory is 11.5 GB. [2020-10-19 17:59:54,114 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 17:59:54,115 INFO L168 Benchmark]: CACSL2BoogieTranslator took 664.79 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -137.3 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2020-10-19 17:59:54,115 INFO L168 Benchmark]: Boogie Preprocessor took 85.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2020-10-19 17:59:54,115 INFO L168 Benchmark]: RCFGBuilder took 802.99 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 11.5 GB. [2020-10-19 17:59:54,116 INFO L168 Benchmark]: TraceAbstraction took 54626.58 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 211.8 MB). Free memory was 1.0 GB in the beginning and 885.3 MB in the end (delta: 151.8 MB). Peak memory consumption was 363.6 MB. Max. memory is 11.5 GB. [2020-10-19 17:59:54,116 INFO L168 Benchmark]: Witness Printer took 4.17 ms. Allocated memory is still 1.4 GB. Free memory is still 885.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 17:59:54,118 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 664.79 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -137.3 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 85.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 802.99 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 54626.58 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 211.8 MB). Free memory was 1.0 GB in the beginning and 885.3 MB in the end (delta: 151.8 MB). Peak memory consumption was 363.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.17 ms. Allocated memory is still 1.4 GB. Free memory is still 885.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 520]: 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: [L525] int array_size = __VERIFIER_nondet_int(); [L526] COND FALSE !(array_size < 1 || array_size >= 2147483647 / sizeof(int)) [L529] int* numbers = (int*) __builtin_alloca (array_size * sizeof(int)); [L531] int i = 0; [L531] COND TRUE i < array_size [L533] numbers[i] = __VERIFIER_nondet_int() [L531] i++ [L531] COND TRUE i < array_size [L533] numbers[i] = __VERIFIER_nondet_int() [L531] i++ [L531] COND TRUE i < array_size [L533] numbers[i] = __VERIFIER_nondet_int() [L531] i++ [L531] COND TRUE i < array_size [L533] numbers[i] = __VERIFIER_nondet_int() [L531] i++ [L531] COND FALSE !(i < array_size) [L535] CALL sumOfThirdBytes(numbers, array_size) [L514] int i, sum; [L515] char* p; [L516] sum = 0 [L517] i = 0 [L517] COND TRUE i < array_size [L518] p = &(numbers[i]) [L519] p = p + 2 [L520] EXPR \read(*p) [L520] sum = sum + *p [L517] i++ [L517] COND TRUE i < array_size [L518] p = &(numbers[i]) [L519] p = p + 2 [L520] EXPR \read(*p) [L520] sum = sum + *p [L517] i++ [L517] COND TRUE i < array_size [L518] p = &(numbers[i]) [L519] p = p + 2 [L520] EXPR \read(*p) [L520] sum = sum + *p [L517] i++ [L517] COND TRUE i < array_size [L518] p = &(numbers[i]) [L519] p = p + 2 [L520] EXPR \read(*p) [L520] sum = sum + *p [L517] i++ [L517] COND TRUE i < array_size [L518] p = &(numbers[i]) [L519] p = p + 2 [L520] EXPR \read(*p) [L520] sum = sum + *p [L517] i++ [L517] COND TRUE i < array_size [L518] p = &(numbers[i]) [L519] p = p + 2 [L520] \read(*p) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 52 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 54.5s, OverallIterations: 16, TraceHistogramMax: 6, AutomataDifference: 22.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 327 SDtfs, 806 SDslu, 1440 SDs, 0 SdLazy, 1633 SolverSat, 242 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 774 GetRequests, 531 SyntacticMatches, 12 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1168 ImplicationChecksByTransitivity, 29.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=14, 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, 15 MinimizatonAttempts, 101 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 15.1s InterpolantComputationTime, 312 NumberOfCodeBlocks, 312 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 594 ConstructedInterpolants, 18 QuantifiedInterpolants, 173581 SizeOfPredicates, 68 NumberOfNonLiveVariables, 995 ConjunctsInSsa, 149 ConjunctsInUnsatCore, 30 InterpolantComputations, 14 PerfectInterpolantSequences, 112/314 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...