./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/verifythis/tree_max.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/verifythis/tree_max.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b88b6d7568fe134c0afce7011b232be11d0c7ffd ................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/verifythis/tree_max.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b88b6d7568fe134c0afce7011b232be11d0c7ffd 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Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 04:29:18,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 04:29:18,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 04:29:18,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 04:29:18,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 04:29:18,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 04:29:18,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 04:29:18,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 04:29:18,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 04:29:18,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 04:29:18,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 04:29:18,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 04:29:18,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 04:29:18,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 04:29:18,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 04:29:18,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 04:29:18,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 04:29:18,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 04:29:18,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 04:29:18,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 04:29:18,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 04:29:18,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 04:29:18,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 04:29:18,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 04:29:18,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 04:29:18,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 04:29:18,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 04:29:18,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 04:29:18,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 04:29:18,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 04:29:18,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 04:29:18,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 04:29:18,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 04:29:18,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 04:29:18,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 04:29:18,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 04:29:18,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 04:29:18,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 04:29:18,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 04:29:18,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 04:29:18,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 04:29:18,750 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-08-27 04:29:18,779 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 04:29:18,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 04:29:18,780 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 04:29:18,780 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 04:29:18,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 04:29:18,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 04:29:18,782 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 04:29:18,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 04:29:18,782 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 04:29:18,782 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 04:29:18,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 04:29:18,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 04:29:18,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 04:29:18,783 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 04:29:18,792 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 04:29:18,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 04:29:18,793 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 04:29:18,793 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 04:29:18,793 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 04:29:18,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 04:29:18,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 04:29:18,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 04:29:18,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:29:18,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 04:29:18,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 04:29:18,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 04:29:18,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 04:29:18,795 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 04:29:18,795 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b88b6d7568fe134c0afce7011b232be11d0c7ffd [2021-08-27 04:29:19,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 04:29:19,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 04:29:19,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 04:29:19,055 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 04:29:19,056 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 04:29:19,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/tree_max.c [2021-08-27 04:29:19,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5617f8a82/9c91e0dfbd2d49b1b95f224b7709f6ae/FLAG5b6b9ed3a [2021-08-27 04:29:19,486 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 04:29:19,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_max.c [2021-08-27 04:29:19,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5617f8a82/9c91e0dfbd2d49b1b95f224b7709f6ae/FLAG5b6b9ed3a [2021-08-27 04:29:19,506 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5617f8a82/9c91e0dfbd2d49b1b95f224b7709f6ae [2021-08-27 04:29:19,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 04:29:19,510 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 04:29:19,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 04:29:19,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 04:29:19,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 04:29:19,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:29:19" (1/1) ... [2021-08-27 04:29:19,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4420bca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:19, skipping insertion in model container [2021-08-27 04:29:19,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:29:19" (1/1) ... [2021-08-27 04:29:19,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 04:29:19,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 04:29:19,652 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_max.c[544,557] [2021-08-27 04:29:19,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:29:19,680 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) [2021-08-27 04:29:19,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@266451d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:19, skipping insertion in model container [2021-08-27 04:29:19,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 04:29:19,682 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-08-27 04:29:19,684 INFO L168 Benchmark]: Toolchain (without parser) took 173.28 ms. Allocated memory is still 58.7 MB. Free memory was 39.2 MB in the beginning and 30.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 04:29:19,685 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 58.7 MB. Free memory is still 40.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 04:29:19,686 INFO L168 Benchmark]: CACSL2BoogieTranslator took 171.54 ms. Allocated memory is still 58.7 MB. Free memory was 39.0 MB in the beginning and 30.5 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 04:29:19,688 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 58.7 MB. Free memory is still 40.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 171.54 ms. Allocated memory is still 58.7 MB. Free memory was 39.0 MB in the beginning and 30.5 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 27]: 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 0.2.1-dev-20ed64e [2021-08-27 04:29:21,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 04:29:21,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 04:29:21,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 04:29:21,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 04:29:21,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 04:29:21,796 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 04:29:21,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 04:29:21,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 04:29:21,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 04:29:21,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 04:29:21,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 04:29:21,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 04:29:21,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 04:29:21,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 04:29:21,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 04:29:21,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 04:29:21,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 04:29:21,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 04:29:21,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 04:29:21,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 04:29:21,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 04:29:21,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 04:29:21,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 04:29:21,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 04:29:21,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 04:29:21,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 04:29:21,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 04:29:21,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 04:29:21,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 04:29:21,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 04:29:21,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 04:29:21,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 04:29:21,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 04:29:21,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 04:29:21,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 04:29:21,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 04:29:21,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 04:29:21,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 04:29:21,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 04:29:21,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 04:29:21,842 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2021-08-27 04:29:21,872 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 04:29:21,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 04:29:21,873 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 04:29:21,873 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 04:29:21,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 04:29:21,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 04:29:21,875 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 04:29:21,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 04:29:21,875 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 04:29:21,875 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 04:29:21,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 04:29:21,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 04:29:21,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 04:29:21,877 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 04:29:21,877 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 04:29:21,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 04:29:21,877 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 04:29:21,877 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 04:29:21,877 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 04:29:21,877 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 04:29:21,878 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 04:29:21,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 04:29:21,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 04:29:21,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 04:29:21,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:29:21,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 04:29:21,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 04:29:21,879 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 04:29:21,879 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 04:29:21,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 04:29:21,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 04:29:21,879 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b88b6d7568fe134c0afce7011b232be11d0c7ffd [2021-08-27 04:29:22,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 04:29:22,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 04:29:22,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 04:29:22,137 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 04:29:22,137 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 04:29:22,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/tree_max.c [2021-08-27 04:29:22,180 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e706b063/b2f8f99ad8cb472d84d3366ea73c1ea0/FLAGbe3b7627e [2021-08-27 04:29:22,499 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 04:29:22,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_max.c [2021-08-27 04:29:22,505 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e706b063/b2f8f99ad8cb472d84d3366ea73c1ea0/FLAGbe3b7627e [2021-08-27 04:29:22,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e706b063/b2f8f99ad8cb472d84d3366ea73c1ea0 [2021-08-27 04:29:22,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 04:29:22,932 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 04:29:22,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 04:29:22,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 04:29:22,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 04:29:22,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:29:22" (1/1) ... [2021-08-27 04:29:22,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa8ffc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:22, skipping insertion in model container [2021-08-27 04:29:22,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:29:22" (1/1) ... [2021-08-27 04:29:22,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 04:29:22,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 04:29:23,051 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_max.c[544,557] [2021-08-27 04:29:23,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:29:23,080 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-08-27 04:29:23,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 04:29:23,085 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_max.c[544,557] [2021-08-27 04:29:23,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:29:23,110 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 04:29:23,118 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_max.c[544,557] [2021-08-27 04:29:23,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:29:23,144 INFO L208 MainTranslator]: Completed translation [2021-08-27 04:29:23,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:23 WrapperNode [2021-08-27 04:29:23,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 04:29:23,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 04:29:23,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 04:29:23,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 04:29:23,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:23" (1/1) ... [2021-08-27 04:29:23,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:23" (1/1) ... [2021-08-27 04:29:23,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:23" (1/1) ... [2021-08-27 04:29:23,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:23" (1/1) ... [2021-08-27 04:29:23,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:23" (1/1) ... [2021-08-27 04:29:23,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:23" (1/1) ... [2021-08-27 04:29:23,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:23" (1/1) ... [2021-08-27 04:29:23,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 04:29:23,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 04:29:23,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 04:29:23,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 04:29:23,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:23" (1/1) ... [2021-08-27 04:29:23,205 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:29:23,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:29:23,239 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 04:29:23,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 04:29:23,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 04:29:23,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 04:29:23,335 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-08-27 04:29:23,336 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 04:29:23,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-08-27 04:29:23,336 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2021-08-27 04:29:23,336 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2021-08-27 04:29:23,336 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2021-08-27 04:29:23,337 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2021-08-27 04:29:23,337 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 04:29:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 04:29:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 04:29:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 04:29:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-08-27 04:29:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 04:29:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-08-27 04:29:23,338 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 04:29:23,338 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 04:29:23,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 04:29:23,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-08-27 04:29:23,338 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2021-08-27 04:29:23,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 04:29:23,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-27 04:29:23,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 04:29:23,339 INFO L130 BoogieDeclarations]: Found specification of procedure max [2021-08-27 04:29:23,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-27 04:29:23,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 04:29:23,339 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-08-27 04:29:23,339 INFO L130 BoogieDeclarations]: Found specification of procedure task [2021-08-27 04:29:23,339 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 04:29:23,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 04:29:23,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-27 04:29:23,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 04:29:23,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-27 04:29:23,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-27 04:29:23,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 04:29:23,715 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 04:29:23,716 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-27 04:29:23,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:29:23 BoogieIcfgContainer [2021-08-27 04:29:23,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 04:29:23,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 04:29:23,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 04:29:23,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 04:29:23,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:29:22" (1/3) ... [2021-08-27 04:29:23,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54131b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:29:23, skipping insertion in model container [2021-08-27 04:29:23,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:29:23" (2/3) ... [2021-08-27 04:29:23,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54131b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:29:23, skipping insertion in model container [2021-08-27 04:29:23,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:29:23" (3/3) ... [2021-08-27 04:29:23,732 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_max.c [2021-08-27 04:29:23,734 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 04:29:23,735 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-08-27 04:29:23,757 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 04:29:23,761 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 04:29:23,761 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-08-27 04:29:23,769 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 61 states have internal predecessors, (68), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-08-27 04:29:23,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-27 04:29:23,773 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:29:23,773 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:29:23,774 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting nondet_treeErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION (and 16 more)] === [2021-08-27 04:29:23,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:29:23,776 INFO L82 PathProgramCache]: Analyzing trace with hash -21695061, now seen corresponding path program 1 times [2021-08-27 04:29:23,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:29:23,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664234906] [2021-08-27 04:29:23,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:23,783 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:29:23,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:29:23,785 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 04:29:23,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-27 04:29:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:23,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 04:29:23,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:29:23,966 INFO L388 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 [2021-08-27 04:29:23,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:29:23,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:29:24,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:29:24,027 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:29:24,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664234906] [2021-08-27 04:29:24,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664234906] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 04:29:24,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:29:24,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 04:29:24,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559036538] [2021-08-27 04:29:24,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 04:29:24,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:29:24,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 04:29:24,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 04:29:24,045 INFO L87 Difference]: Start difference. First operand has 82 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 61 states have internal predecessors, (68), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:29:24,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:29:24,124 INFO L93 Difference]: Finished difference Result 83 states and 96 transitions. [2021-08-27 04:29:24,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 04:29:24,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-08-27 04:29:24,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:29:24,131 INFO L225 Difference]: With dead ends: 83 [2021-08-27 04:29:24,131 INFO L226 Difference]: Without dead ends: 80 [2021-08-27 04:29:24,131 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 04:29:24,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-08-27 04:29:24,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2021-08-27 04:29:24,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 40 states have (on average 1.6) internal successors, (64), 58 states have internal predecessors, (64), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-08-27 04:29:24,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2021-08-27 04:29:24,158 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 8 [2021-08-27 04:29:24,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:29:24,158 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2021-08-27 04:29:24,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:29:24,158 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2021-08-27 04:29:24,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-27 04:29:24,159 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:29:24,159 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:29:24,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-27 04:29:24,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 04:29:24,366 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting nondet_treeErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION (and 16 more)] === [2021-08-27 04:29:24,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:29:24,366 INFO L82 PathProgramCache]: Analyzing trace with hash -21695060, now seen corresponding path program 1 times [2021-08-27 04:29:24,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:29:24,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984061480] [2021-08-27 04:29:24,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:24,367 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:29:24,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:29:24,368 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 04:29:24,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-27 04:29:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:24,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-27 04:29:24,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:29:24,464 INFO L388 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 [2021-08-27 04:29:24,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:29:24,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:29:24,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:29:24,539 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:29:24,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984061480] [2021-08-27 04:29:24,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984061480] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 04:29:24,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:29:24,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-08-27 04:29:24,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383930007] [2021-08-27 04:29:24,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 04:29:24,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:29:24,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 04:29:24,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:29:24,541 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:29:24,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:29:24,657 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2021-08-27 04:29:24,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 04:29:24,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-08-27 04:29:24,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:29:24,659 INFO L225 Difference]: With dead ends: 77 [2021-08-27 04:29:24,659 INFO L226 Difference]: Without dead ends: 77 [2021-08-27 04:29:24,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:29:24,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-08-27 04:29:24,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-08-27 04:29:24,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 40 states have (on average 1.575) internal successors, (63), 57 states have internal predecessors, (63), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-08-27 04:29:24,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2021-08-27 04:29:24,665 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 8 [2021-08-27 04:29:24,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:29:24,665 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2021-08-27 04:29:24,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:29:24,665 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2021-08-27 04:29:24,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-27 04:29:24,666 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:29:24,666 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:29:24,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-27 04:29:24,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 04:29:24,872 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting maxErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION (and 16 more)] === [2021-08-27 04:29:24,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:29:24,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1329093118, now seen corresponding path program 1 times [2021-08-27 04:29:24,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:29:24,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713557204] [2021-08-27 04:29:24,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:24,873 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:29:24,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:29:24,874 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 04:29:24,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-27 04:29:24,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:24,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 04:29:24,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:29:25,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:29:25,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:29:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:29:25,185 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:29:25,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713557204] [2021-08-27 04:29:25,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713557204] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 04:29:25,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:29:25,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-08-27 04:29:25,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417669535] [2021-08-27 04:29:25,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 04:29:25,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:29:25,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 04:29:25,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-27 04:29:25,187 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 04:29:25,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:29:25,278 INFO L93 Difference]: Finished difference Result 93 states and 109 transitions. [2021-08-27 04:29:25,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 04:29:25,278 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2021-08-27 04:29:25,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:29:25,279 INFO L225 Difference]: With dead ends: 93 [2021-08-27 04:29:25,279 INFO L226 Difference]: Without dead ends: 93 [2021-08-27 04:29:25,280 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 61.2ms TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-08-27 04:29:25,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-08-27 04:29:25,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2021-08-27 04:29:25,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 65 states have internal predecessors, (70), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2021-08-27 04:29:25,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 104 transitions. [2021-08-27 04:29:25,286 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 104 transitions. Word has length 15 [2021-08-27 04:29:25,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:29:25,286 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 104 transitions. [2021-08-27 04:29:25,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 04:29:25,287 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 104 transitions. [2021-08-27 04:29:25,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-27 04:29:25,287 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:29:25,287 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:29:25,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-27 04:29:25,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 04:29:25,493 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting nondet_treeErr2REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION (and 16 more)] === [2021-08-27 04:29:25,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:29:25,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1115064036, now seen corresponding path program 1 times [2021-08-27 04:29:25,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:29:25,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638635942] [2021-08-27 04:29:25,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:25,494 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:29:25,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:29:25,495 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 04:29:25,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-27 04:29:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:25,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 04:29:25,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:29:25,584 INFO L388 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 [2021-08-27 04:29:25,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:29:25,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:29:25,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:29:25,693 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:29:25,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638635942] [2021-08-27 04:29:25,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638635942] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 04:29:25,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:29:25,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-08-27 04:29:25,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528260567] [2021-08-27 04:29:25,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 04:29:25,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:29:25,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 04:29:25,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:29:25,694 INFO L87 Difference]: Start difference. First operand 90 states and 104 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 04:29:25,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:29:25,890 INFO L93 Difference]: Finished difference Result 90 states and 103 transitions. [2021-08-27 04:29:25,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 04:29:25,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 14 [2021-08-27 04:29:25,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:29:25,891 INFO L225 Difference]: With dead ends: 90 [2021-08-27 04:29:25,891 INFO L226 Difference]: Without dead ends: 86 [2021-08-27 04:29:25,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.6ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:29:25,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-08-27 04:29:25,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-08-27 04:29:25,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 62 states have internal predecessors, (67), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2021-08-27 04:29:25,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 99 transitions. [2021-08-27 04:29:25,896 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 99 transitions. Word has length 14 [2021-08-27 04:29:25,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:29:25,896 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 99 transitions. [2021-08-27 04:29:25,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 04:29:25,896 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 99 transitions. [2021-08-27 04:29:25,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-27 04:29:25,897 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:29:25,897 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:29:25,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-27 04:29:26,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 04:29:26,104 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting nondet_treeErr3REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION (and 16 more)] === [2021-08-27 04:29:26,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:29:26,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1115064035, now seen corresponding path program 1 times [2021-08-27 04:29:26,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:29:26,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100886965] [2021-08-27 04:29:26,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:26,106 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:29:26,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:29:26,107 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 04:29:26,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-27 04:29:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:26,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 04:29:26,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:29:26,214 INFO L388 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 [2021-08-27 04:29:26,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:29:26,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:29:26,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:29:26,473 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:29:26,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100886965] [2021-08-27 04:29:26,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100886965] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 04:29:26,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:29:26,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-08-27 04:29:26,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869579144] [2021-08-27 04:29:26,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 04:29:26,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:29:26,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 04:29:26,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:29:26,475 INFO L87 Difference]: Start difference. First operand 86 states and 99 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 04:29:26,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:29:26,863 INFO L93 Difference]: Finished difference Result 98 states and 119 transitions. [2021-08-27 04:29:26,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 04:29:26,864 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 14 [2021-08-27 04:29:26,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:29:26,865 INFO L225 Difference]: With dead ends: 98 [2021-08-27 04:29:26,865 INFO L226 Difference]: Without dead ends: 98 [2021-08-27 04:29:26,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 69.1ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:29:26,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-08-27 04:29:26,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 90. [2021-08-27 04:29:26,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 64 states have internal predecessors, (70), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (18), 16 states have call predecessors, (18), 14 states have call successors, (18) [2021-08-27 04:29:26,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 105 transitions. [2021-08-27 04:29:26,870 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 105 transitions. Word has length 14 [2021-08-27 04:29:26,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:29:26,871 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 105 transitions. [2021-08-27 04:29:26,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 04:29:26,871 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 105 transitions. [2021-08-27 04:29:26,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-27 04:29:26,871 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:29:26,871 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:29:26,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-27 04:29:27,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 04:29:27,078 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting checkErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION (and 16 more)] === [2021-08-27 04:29:27,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:29:27,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1586448910, now seen corresponding path program 1 times [2021-08-27 04:29:27,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:29:27,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116697047] [2021-08-27 04:29:27,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:27,079 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:29:27,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:29:27,080 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 04:29:27,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-27 04:29:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:27,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 04:29:27,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:29:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:29:27,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:29:27,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:29:27,392 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:29:27,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116697047] [2021-08-27 04:29:27,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116697047] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 04:29:27,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:29:27,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-08-27 04:29:27,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596337234] [2021-08-27 04:29:27,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 04:29:27,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:29:27,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 04:29:27,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-27 04:29:27,394 INFO L87 Difference]: Start difference. First operand 90 states and 105 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 04:29:27,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:29:27,453 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2021-08-27 04:29:27,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 04:29:27,453 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2021-08-27 04:29:27,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:29:27,454 INFO L225 Difference]: With dead ends: 96 [2021-08-27 04:29:27,454 INFO L226 Difference]: Without dead ends: 83 [2021-08-27 04:29:27,455 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 62.8ms TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-08-27 04:29:27,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-08-27 04:29:27,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2021-08-27 04:29:27,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 59 states have internal predecessors, (65), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2021-08-27 04:29:27,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2021-08-27 04:29:27,459 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 21 [2021-08-27 04:29:27,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:29:27,459 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2021-08-27 04:29:27,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 04:29:27,460 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2021-08-27 04:29:27,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-27 04:29:27,460 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:29:27,461 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:29:27,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-27 04:29:27,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 04:29:27,668 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting nondet_treeErr3REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION (and 16 more)] === [2021-08-27 04:29:27,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:29:27,668 INFO L82 PathProgramCache]: Analyzing trace with hash -885339599, now seen corresponding path program 1 times [2021-08-27 04:29:27,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:29:27,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854335193] [2021-08-27 04:29:27,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:27,668 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:29:27,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:29:27,669 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 04:29:27,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-27 04:29:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:27,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-27 04:29:27,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:29:27,904 INFO L388 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 [2021-08-27 04:29:27,908 INFO L388 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 [2021-08-27 04:29:28,142 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 04:29:28,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2021-08-27 04:29:28,150 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 04:29:28,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 28 [2021-08-27 04:29:28,183 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 04:29:28,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:29:45,826 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:29:45,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854335193] [2021-08-27 04:29:45,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 04:29:45,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1944997665] [2021-08-27 04:29:45,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:45,827 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-27 04:29:45,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-27 04:29:45,832 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-27 04:29:45,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-08-27 04:29:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:46,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-27 04:29:46,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:29:46,107 INFO L388 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 [2021-08-27 04:29:46,113 INFO L388 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 [2021-08-27 04:29:46,294 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 04:29:46,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-08-27 04:29:46,311 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 04:29:46,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2021-08-27 04:29:46,343 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 04:29:46,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:29:56,836 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 04:29:56,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846158104] [2021-08-27 04:29:56,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:29:56,836 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:29:56,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:29:56,837 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 04:29:56,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-27 04:29:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:29:57,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 04:29:57,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:29:57,075 INFO L388 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 [2021-08-27 04:29:59,883 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 04:29:59,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-08-27 04:29:59,957 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-27 04:29:59,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:30:02,264 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_nondet_tree_~n~0.offset_BEFORE_CALL_8 (_ BitVec 32)) (v_nondet_tree_~n~0.base_BEFORE_CALL_10 (_ BitVec 32))) (let ((.cse0 (bvadd (_ bv8 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_8))) (or (exists ((v_nondet_tree_~n~0.base_27 (_ BitVec 32))) (not (bvule (bvadd (_ bv8 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_8) (select (store |c_old(#length)| v_nondet_tree_~n~0.base_27 (_ bv12 32)) v_nondet_tree_~n~0.base_BEFORE_CALL_10)))) (not (bvule (bvadd (_ bv4 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_8) .cse0)) (bvule .cse0 (select |c_#length| v_nondet_tree_~n~0.base_BEFORE_CALL_10))))) is different from false [2021-08-27 04:30:02,508 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 04:30:02,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:30:02,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-27 04:30:02,508 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-27 04:30:02,508 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-27 04:30:02,511 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location nondet_treeErr3REQUIRES_VIOLATION [2021-08-27 04:30:02,513 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 04:30:02,513 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location nondet_treeErr0REQUIRES_VIOLATION [2021-08-27 04:30:02,513 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location nondet_treeErr1REQUIRES_VIOLATION [2021-08-27 04:30:02,513 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location nondet_treeErr2REQUIRES_VIOLATION [2021-08-27 04:30:02,513 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location nondet_treeErr4REQUIRES_VIOLATION [2021-08-27 04:30:02,513 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location nondet_treeErr5REQUIRES_VIOLATION [2021-08-27 04:30:02,513 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location maxErr0REQUIRES_VIOLATION [2021-08-27 04:30:02,513 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location maxErr1REQUIRES_VIOLATION [2021-08-27 04:30:02,513 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location maxErr2REQUIRES_VIOLATION [2021-08-27 04:30:02,513 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location maxErr3REQUIRES_VIOLATION [2021-08-27 04:30:02,513 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location maxErr4REQUIRES_VIOLATION [2021-08-27 04:30:02,513 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location maxErr5REQUIRES_VIOLATION [2021-08-27 04:30:02,514 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkErr0REQUIRES_VIOLATION [2021-08-27 04:30:02,514 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkErr1REQUIRES_VIOLATION [2021-08-27 04:30:02,514 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkErr2REQUIRES_VIOLATION [2021-08-27 04:30:02,514 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkErr3REQUIRES_VIOLATION [2021-08-27 04:30:02,514 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkErr4REQUIRES_VIOLATION [2021-08-27 04:30:02,514 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkErr5REQUIRES_VIOLATION [2021-08-27 04:30:02,514 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-08-27 04:30:02,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-08-27 04:30:02,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-08-27 04:30:02,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-27 04:30:03,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:30:03,121 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 04:30:03,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 04:30:03 BoogieIcfgContainer [2021-08-27 04:30:03,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 04:30:03,131 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 04:30:03,131 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 04:30:03,132 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 04:30:03,132 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:29:23" (3/4) ... [2021-08-27 04:30:03,134 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 04:30:03,134 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 04:30:03,135 INFO L168 Benchmark]: Toolchain (without parser) took 40203.39 ms. Allocated memory was 58.7 MB in the beginning and 130.0 MB in the end (delta: 71.3 MB). Free memory was 43.5 MB in the beginning and 35.6 MB in the end (delta: 7.9 MB). Peak memory consumption was 78.7 MB. Max. memory is 16.1 GB. [2021-08-27 04:30:03,135 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 46.1 MB. Free memory is still 28.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 04:30:03,136 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.51 ms. Allocated memory is still 58.7 MB. Free memory was 43.3 MB in the beginning and 40.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 04:30:03,136 INFO L168 Benchmark]: Boogie Preprocessor took 52.20 ms. Allocated memory is still 58.7 MB. Free memory was 40.0 MB in the beginning and 37.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 04:30:03,136 INFO L168 Benchmark]: RCFGBuilder took 518.25 ms. Allocated memory is still 58.7 MB. Free memory was 37.7 MB in the beginning and 25.3 MB in the end (delta: 12.4 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2021-08-27 04:30:03,137 INFO L168 Benchmark]: TraceAbstraction took 39402.43 ms. Allocated memory was 58.7 MB in the beginning and 130.0 MB in the end (delta: 71.3 MB). Free memory was 40.8 MB in the beginning and 36.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 76.0 MB. Max. memory is 16.1 GB. [2021-08-27 04:30:03,137 INFO L168 Benchmark]: Witness Printer took 3.24 ms. Allocated memory is still 130.0 MB. Free memory was 36.6 MB in the beginning and 35.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 04:30:03,138 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 46.1 MB. Free memory is still 28.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 211.51 ms. Allocated memory is still 58.7 MB. Free memory was 43.3 MB in the beginning and 40.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.20 ms. Allocated memory is still 58.7 MB. Free memory was 40.0 MB in the beginning and 37.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 518.25 ms. Allocated memory is still 58.7 MB. Free memory was 37.7 MB in the beginning and 25.3 MB in the end (delta: 12.4 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 39402.43 ms. Allocated memory was 58.7 MB in the beginning and 130.0 MB in the end (delta: 71.3 MB). Free memory was 40.8 MB in the beginning and 36.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 76.0 MB. Max. memory is 16.1 GB. * Witness Printer took 3.24 ms. Allocated memory is still 130.0 MB. Free memory was 36.6 MB in the beginning and 35.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 29]: 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: [L66] CALL nondet_tree() [L24] COND FALSE !(__VERIFIER_nondet_bool()) [L27] struct node *n = (struct node *)malloc(sizeof(struct node)); [L28] n->data = __VERIFIER_nondet_int() [L29] CALL, EXPR nondet_tree() [L24] COND FALSE !(__VERIFIER_nondet_bool()) [L27] struct node *n = (struct node *)malloc(sizeof(struct node)); [L28] n->data = __VERIFIER_nondet_int() [L29] CALL, EXPR nondet_tree() [L24] COND TRUE __VERIFIER_nondet_bool() [L25] return 0; [L29] RET, EXPR nondet_tree() [L29] n->left = nondet_tree() [L30] CALL, EXPR nondet_tree() [L24] COND TRUE __VERIFIER_nondet_bool() [L25] return 0; [L30] RET, EXPR nondet_tree() [L30] n->right = nondet_tree() [L31] return n; [L29] RET, EXPR nondet_tree() [L29] n->left = nondet_tree() - UnprovableResult [Line: 65]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 28]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 28]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 29]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 30]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 30]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 39]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 39]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 40]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 40]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 41]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 41]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 50]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 50]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 53]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 53]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 55]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 55]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 15]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 89 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 39363.4ms, OverallIterations: 7, TraceHistogramMax: 3, EmptinessCheckTime: 9.1ms, AutomataDifference: 960.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 469 SDtfs, 147 SDslu, 1218 SDs, 0 SdLazy, 500 SolverSat, 52 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 686.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 159 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 236.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=3, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 41.3ms AutomataMinimizationTime, 6 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 63.4ms SsaConstructionTime, 115.1ms SatisfiabilityAnalysisTime, 1120.2ms InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 148 ConstructedInterpolants, 6 QuantifiedInterpolants, 640 SizeOfPredicates, 8 NumberOfNonLiveVariables, 532 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 4/4 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 [2021-08-27 04:30:03,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...