./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/verifythis/tree_del_iter.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/verifythis/tree_del_iter.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 3996209b60f87d3e4d0d43d86633911b8e11add8 ........................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/verifythis/tree_del_iter.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 3996209b60f87d3e4d0d43d86633911b8e11add8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:19:57,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:19:57,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:19:57,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:19:57,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:19:57,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:19:57,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:19:57,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:19:57,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:19:57,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:19:57,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:19:57,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:19:57,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:19:57,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:19:57,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:19:57,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:19:57,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:19:57,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:19:57,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:19:57,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:19:57,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:19:57,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:19:57,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:19:57,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:19:57,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:19:57,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:19:57,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:19:57,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:19:57,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:19:57,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:19:57,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:19:57,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:19:57,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:19:57,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:19:57,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:19:57,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:19:57,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:19:57,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:19:57,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:19:57,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:19:57,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:19:57,169 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-10-20 06:19:57,219 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:19:57,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:19:57,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:19:57,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:19:57,221 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:19:57,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:19:57,222 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:19:57,222 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:19:57,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:19:57,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:19:57,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:19:57,223 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:19:57,224 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:19:57,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:19:57,224 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:19:57,224 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:19:57,225 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:19:57,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:19:57,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:19:57,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:19:57,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:19:57,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:19:57,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:19:57,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:19:57,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:19:57,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:19:57,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:19:57,227 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-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 -> 3996209b60f87d3e4d0d43d86633911b8e11add8 [2020-10-20 06:19:57,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:19:57,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:19:57,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:19:57,495 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:19:57,496 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:19:57,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/tree_del_iter.c [2020-10-20 06:19:57,576 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7d50ee10/9f1e04136e7c4b048f69be6328e90f85/FLAGb8635b2c8 [2020-10-20 06:19:58,153 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:19:58,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_del_iter.c [2020-10-20 06:19:58,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7d50ee10/9f1e04136e7c4b048f69be6328e90f85/FLAGb8635b2c8 [2020-10-20 06:19:58,510 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7d50ee10/9f1e04136e7c4b048f69be6328e90f85 [2020-10-20 06:19:58,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:19:58,523 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:19:58,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:19:58,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:19:58,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:19:58,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:19:58" (1/1) ... [2020-10-20 06:19:58,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a4d3774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:58, skipping insertion in model container [2020-10-20 06:19:58,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:19:58" (1/1) ... [2020-10-20 06:19:58,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:19:58,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:19:58,812 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-20 06:19:58,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:19:58,854 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2020-10-20 06:19:58,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@57d34efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:58, skipping insertion in model container [2020-10-20 06:19:58,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:19:58,856 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2020-10-20 06:19:58,861 INFO L168 Benchmark]: Toolchain (without parser) took 340.34 ms. Allocated memory was 40.9 MB in the beginning and 41.4 MB in the end (delta: 524.3 kB). Free memory was 20.6 MB in the beginning and 22.2 MB in the end (delta: -1.5 MB). Peak memory consumption was 11.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:58,863 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 31.5 MB. Free memory was 10.6 MB in the beginning and 10.6 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. [2020-10-20 06:19:58,866 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.69 ms. Allocated memory was 40.9 MB in the beginning and 41.4 MB in the end (delta: 524.3 kB). Free memory was 19.8 MB in the beginning and 22.2 MB in the end (delta: -2.4 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:58,869 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 31.5 MB. Free memory was 10.6 MB in the beginning and 10.6 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 331.69 ms. Allocated memory was 40.9 MB in the beginning and 41.4 MB in the end (delta: 524.3 kB). Free memory was 19.8 MB in the beginning and 22.2 MB in the end (delta: -2.4 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 28]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:20:00,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:20:00,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:20:00,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:20:00,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:20:00,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:20:00,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:20:00,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:20:00,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:20:00,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:20:00,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:20:00,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:20:00,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:20:00,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:20:00,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:20:00,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:20:00,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:20:00,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:20:00,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:20:00,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:20:00,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:20:00,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:20:00,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:20:00,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:20:00,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:20:00,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:20:00,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:20:00,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:20:00,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:20:00,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:20:00,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:20:00,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:20:00,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:20:00,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:20:00,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:20:00,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:20:00,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:20:00,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:20:00,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:20:00,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:20:00,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:20:00,967 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2020-10-20 06:20:01,006 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:20:01,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:20:01,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:20:01,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:20:01,009 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:20:01,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:20:01,009 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:20:01,010 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:20:01,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:20:01,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:20:01,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:20:01,011 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:20:01,011 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:20:01,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:20:01,012 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:20:01,012 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 06:20:01,012 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 06:20:01,012 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:20:01,012 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:20:01,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:20:01,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:20:01,013 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:20:01,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:20:01,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:20:01,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:20:01,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:20:01,014 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 06:20:01,014 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 06:20:01,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:20:01,017 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 06:20:01,017 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-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 -> 3996209b60f87d3e4d0d43d86633911b8e11add8 [2020-10-20 06:20:01,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:20:01,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:20:01,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:20:01,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:20:01,235 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:20:01,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/tree_del_iter.c [2020-10-20 06:20:01,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68169cc30/26b72c5c153f49afa7e93f942a4b859b/FLAG694146cec [2020-10-20 06:20:01,830 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:20:01,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_del_iter.c [2020-10-20 06:20:01,852 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68169cc30/26b72c5c153f49afa7e93f942a4b859b/FLAG694146cec [2020-10-20 06:20:02,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68169cc30/26b72c5c153f49afa7e93f942a4b859b [2020-10-20 06:20:02,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:20:02,157 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:20:02,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:20:02,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:20:02,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:20:02,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:20:02" (1/1) ... [2020-10-20 06:20:02,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f643497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:20:02, skipping insertion in model container [2020-10-20 06:20:02,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:20:02" (1/1) ... [2020-10-20 06:20:02,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:20:02,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:20:02,441 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-20 06:20:02,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:20:02,494 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-10-20 06:20:02,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:20:02,525 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-20 06:20:02,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:20:02,546 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:20:02,579 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-20 06:20:02,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:20:02,625 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:20:02,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:20:02 WrapperNode [2020-10-20 06:20:02,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:20:02,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:20:02,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:20:02,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:20:02,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:20:02" (1/1) ... [2020-10-20 06:20:02,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:20:02" (1/1) ... [2020-10-20 06:20:02,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:20:02" (1/1) ... [2020-10-20 06:20:02,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:20:02" (1/1) ... [2020-10-20 06:20:02,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:20:02" (1/1) ... [2020-10-20 06:20:02,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:20:02" (1/1) ... [2020-10-20 06:20:02,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:20:02" (1/1) ... [2020-10-20 06:20:02,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:20:02,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:20:02,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:20:02,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:20:02,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:20:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:20:02,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:20:02,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:20:02,768 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_cycle_if_not [2020-10-20 06:20:02,768 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 06:20:02,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-20 06:20:02,769 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-10-20 06:20:02,769 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-10-20 06:20:02,769 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-10-20 06:20:02,772 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-10-20 06:20:02,772 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-10-20 06:20:02,772 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-10-20 06:20:02,772 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:20:02,773 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-20 06:20:02,773 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 06:20:02,773 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 06:20:02,773 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 06:20:02,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:20:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-20 06:20:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure assume_cycle_if_not [2020-10-20 06:20:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:20:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 06:20:02,775 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 06:20:02,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:20:02,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-20 06:20:02,775 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-10-20 06:20:02,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:20:02,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 06:20:02,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 06:20:02,776 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-10-20 06:20:02,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 06:20:02,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 06:20:02,777 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-10-20 06:20:02,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:20:02,777 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-10-20 06:20:02,777 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-10-20 06:20:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-10-20 06:20:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-20 06:20:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:20:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:20:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 06:20:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:20:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-20 06:20:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-20 06:20:03,751 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:20:03,752 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-20 06:20:03,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:20:03 BoogieIcfgContainer [2020-10-20 06:20:03,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:20:03,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:20:03,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:20:03,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:20:03,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:20:02" (1/3) ... [2020-10-20 06:20:03,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2762731c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:20:03, skipping insertion in model container [2020-10-20 06:20:03,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:20:02" (2/3) ... [2020-10-20 06:20:03,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2762731c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:20:03, skipping insertion in model container [2020-10-20 06:20:03,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:20:03" (3/3) ... [2020-10-20 06:20:03,765 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_del_iter.c [2020-10-20 06:20:03,785 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:20:03,797 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 64 error locations. [2020-10-20 06:20:03,811 INFO L253 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2020-10-20 06:20:03,836 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:20:03,836 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:20:03,836 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:20:03,837 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:20:03,837 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:20:03,838 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:20:03,838 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:20:03,838 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:20:03,874 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states. [2020-10-20 06:20:03,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 06:20:03,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:20:03,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:20:03,885 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, minErr1REQUIRES_VIOLATION, minErr0REQUIRES_VIOLATION, minErr5REQUIRES_VIOLATION, minErr4REQUIRES_VIOLATION, minErr3REQUIRES_VIOLATION, minErr2REQUIRES_VIOLATION, taskErr5REQUIRES_VIOLATION, taskErr7REQUIRES_VIOLATION, taskErr13ASSERT_VIOLATIONMEMORY_FREE, taskErr6REQUIRES_VIOLATION, taskErr8ASSERT_VIOLATIONMEMORY_FREE, taskErr9ASSERT_VIOLATIONMEMORY_FREE, taskErr10ASSERT_VIOLATIONMEMORY_FREE, taskErr0REQUIRES_VIOLATION, taskErr11ASSERT_VIOLATIONMEMORY_FREE, taskErr1REQUIRES_VIOLATION, taskErr3REQUIRES_VIOLATION, taskErr12ASSERT_VIOLATIONMEMORY_FREE, taskErr2REQUIRES_VIOLATION, taskErr4REQUIRES_VIOLATION, sizeErr0REQUIRES_VIOLATION, sizeErr1REQUIRES_VIOLATION, sizeErr2REQUIRES_VIOLATION, sizeErr3REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr5REQUIRES_VIOLATION, nondet_treeErr4REQUIRES_VIOLATION, nondet_treeErr3REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, tree_inorderErr4REQUIRES_VIOLATION, tree_inorderErr2REQUIRES_VIOLATION, tree_inorderErr3REQUIRES_VIOLATION, tree_inorderErr1REQUIRES_VIOLATION, tree_inorderErr6REQUIRES_VIOLATION, tree_inorderErr7REQUIRES_VIOLATION, tree_inorderErr5REQUIRES_VIOLATION, tree_inorderErr0REQUIRES_VIOLATION, tree_delErr18ASSERT_VIOLATIONMEMORY_FREE, tree_delErr20REQUIRES_VIOLATION, tree_delErr9REQUIRES_VIOLATION, tree_delErr0REQUIRES_VIOLATION, tree_delErr11REQUIRES_VIOLATION, tree_delErr21REQUIRES_VIOLATION, tree_delErr10REQUIRES_VIOLATION, tree_delErr8ASSERT_VIOLATIONMEMORY_FREE, tree_delErr23REQUIRES_VIOLATION, tree_delErr6ASSERT_VIOLATIONMEMORY_FREE, tree_delErr12REQUIRES_VIOLATION, tree_delErr1REQUIRES_VIOLATION, tree_delErr7ASSERT_VIOLATIONMEMORY_FREE, tree_delErr22REQUIRES_VIOLATION, tree_delErr3REQUIRES_VIOLATION, tree_delErr2REQUIRES_VIOLATION, tree_delErr13REQUIRES_VIOLATION, tree_delErr4REQUIRES_VIOLATION, tree_delErr15REQUIRES_VIOLATION, tree_delErr14REQUIRES_VIOLATION, tree_delErr16REQUIRES_VIOLATION, tree_delErr5REQUIRES_VIOLATION, tree_delErr19ASSERT_VIOLATIONMEMORY_FREE, tree_delErr17ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-20 06:20:03,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:20:03,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1976905783, now seen corresponding path program 1 times [2020-10-20 06:20:03,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:20:03,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787901945] [2020-10-20 06:20:03,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-20 06:20:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:20:04,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 06:20:04,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:20:04,090 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:20:04,091 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:20:04,101 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:20:04,102 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:20:04,102 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:20:04,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:20:04,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:20:04,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:20:04,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787901945] [2020-10-20 06:20:04,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:20:04,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 06:20:04,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302489989] [2020-10-20 06:20:04,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:20:04,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:20:04,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:20:04,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:20:04,161 INFO L87 Difference]: Start difference. First operand 209 states. Second operand 3 states. [2020-10-20 06:20:04,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:20:04,520 INFO L93 Difference]: Finished difference Result 207 states and 232 transitions. [2020-10-20 06:20:04,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:20:04,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-20 06:20:04,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:20:04,538 INFO L225 Difference]: With dead ends: 207 [2020-10-20 06:20:04,538 INFO L226 Difference]: Without dead ends: 203 [2020-10-20 06:20:04,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:20:04,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-20 06:20:04,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 201. [2020-10-20 06:20:04,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-20 06:20:04,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 223 transitions. [2020-10-20 06:20:04,605 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 223 transitions. Word has length 8 [2020-10-20 06:20:04,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:20:04,605 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 223 transitions. [2020-10-20 06:20:04,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:20:04,606 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 223 transitions. [2020-10-20 06:20:04,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 06:20:04,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:20:04,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:20:04,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 06:20:04,824 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, minErr1REQUIRES_VIOLATION, minErr0REQUIRES_VIOLATION, minErr5REQUIRES_VIOLATION, minErr4REQUIRES_VIOLATION, minErr3REQUIRES_VIOLATION, minErr2REQUIRES_VIOLATION, taskErr5REQUIRES_VIOLATION, taskErr7REQUIRES_VIOLATION, taskErr13ASSERT_VIOLATIONMEMORY_FREE, taskErr6REQUIRES_VIOLATION, taskErr8ASSERT_VIOLATIONMEMORY_FREE, taskErr9ASSERT_VIOLATIONMEMORY_FREE, taskErr10ASSERT_VIOLATIONMEMORY_FREE, taskErr0REQUIRES_VIOLATION, taskErr11ASSERT_VIOLATIONMEMORY_FREE, taskErr1REQUIRES_VIOLATION, taskErr3REQUIRES_VIOLATION, taskErr12ASSERT_VIOLATIONMEMORY_FREE, taskErr2REQUIRES_VIOLATION, taskErr4REQUIRES_VIOLATION, sizeErr0REQUIRES_VIOLATION, sizeErr1REQUIRES_VIOLATION, sizeErr2REQUIRES_VIOLATION, sizeErr3REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr5REQUIRES_VIOLATION, nondet_treeErr4REQUIRES_VIOLATION, nondet_treeErr3REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, tree_inorderErr4REQUIRES_VIOLATION, tree_inorderErr2REQUIRES_VIOLATION, tree_inorderErr3REQUIRES_VIOLATION, tree_inorderErr1REQUIRES_VIOLATION, tree_inorderErr6REQUIRES_VIOLATION, tree_inorderErr7REQUIRES_VIOLATION, tree_inorderErr5REQUIRES_VIOLATION, tree_inorderErr0REQUIRES_VIOLATION, tree_delErr18ASSERT_VIOLATIONMEMORY_FREE, tree_delErr20REQUIRES_VIOLATION, tree_delErr9REQUIRES_VIOLATION, tree_delErr0REQUIRES_VIOLATION, tree_delErr11REQUIRES_VIOLATION, tree_delErr21REQUIRES_VIOLATION, tree_delErr10REQUIRES_VIOLATION, tree_delErr8ASSERT_VIOLATIONMEMORY_FREE, tree_delErr23REQUIRES_VIOLATION, tree_delErr6ASSERT_VIOLATIONMEMORY_FREE, tree_delErr12REQUIRES_VIOLATION, tree_delErr1REQUIRES_VIOLATION, tree_delErr7ASSERT_VIOLATIONMEMORY_FREE, tree_delErr22REQUIRES_VIOLATION, tree_delErr3REQUIRES_VIOLATION, tree_delErr2REQUIRES_VIOLATION, tree_delErr13REQUIRES_VIOLATION, tree_delErr4REQUIRES_VIOLATION, tree_delErr15REQUIRES_VIOLATION, tree_delErr14REQUIRES_VIOLATION, tree_delErr16REQUIRES_VIOLATION, tree_delErr5REQUIRES_VIOLATION, tree_delErr19ASSERT_VIOLATIONMEMORY_FREE, tree_delErr17ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-20 06:20:04,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:20:04,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1976905784, now seen corresponding path program 1 times [2020-10-20 06:20:04,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:20:04,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860571906] [2020-10-20 06:20:04,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-20 06:20:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:20:04,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:20:04,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:20:04,944 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:20:04,944 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:20:04,951 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:20:04,952 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:20:04,952 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:20:04,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:20:04,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:20:05,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:20:05,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860571906] [2020-10-20 06:20:05,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:20:05,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-10-20 06:20:05,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329636140] [2020-10-20 06:20:05,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:20:05,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:20:05,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:20:05,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:20:05,017 INFO L87 Difference]: Start difference. First operand 201 states and 223 transitions. Second operand 4 states. [2020-10-20 06:20:05,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:20:05,695 INFO L93 Difference]: Finished difference Result 200 states and 222 transitions. [2020-10-20 06:20:05,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:20:05,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-20 06:20:05,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:20:05,700 INFO L225 Difference]: With dead ends: 200 [2020-10-20 06:20:05,702 INFO L226 Difference]: Without dead ends: 200 [2020-10-20 06:20:05,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:20:05,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-20 06:20:05,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2020-10-20 06:20:05,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-20 06:20:05,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 222 transitions. [2020-10-20 06:20:05,721 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 222 transitions. Word has length 8 [2020-10-20 06:20:05,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:20:05,721 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 222 transitions. [2020-10-20 06:20:05,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:20:05,722 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 222 transitions. [2020-10-20 06:20:05,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 06:20:05,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:20:05,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:20:05,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 06:20:05,941 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, minErr1REQUIRES_VIOLATION, minErr0REQUIRES_VIOLATION, minErr5REQUIRES_VIOLATION, minErr4REQUIRES_VIOLATION, minErr3REQUIRES_VIOLATION, minErr2REQUIRES_VIOLATION, taskErr5REQUIRES_VIOLATION, taskErr7REQUIRES_VIOLATION, taskErr13ASSERT_VIOLATIONMEMORY_FREE, taskErr6REQUIRES_VIOLATION, taskErr8ASSERT_VIOLATIONMEMORY_FREE, taskErr9ASSERT_VIOLATIONMEMORY_FREE, taskErr10ASSERT_VIOLATIONMEMORY_FREE, taskErr0REQUIRES_VIOLATION, taskErr11ASSERT_VIOLATIONMEMORY_FREE, taskErr1REQUIRES_VIOLATION, taskErr3REQUIRES_VIOLATION, taskErr12ASSERT_VIOLATIONMEMORY_FREE, taskErr2REQUIRES_VIOLATION, taskErr4REQUIRES_VIOLATION, sizeErr0REQUIRES_VIOLATION, sizeErr1REQUIRES_VIOLATION, sizeErr2REQUIRES_VIOLATION, sizeErr3REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr5REQUIRES_VIOLATION, nondet_treeErr4REQUIRES_VIOLATION, nondet_treeErr3REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, tree_inorderErr4REQUIRES_VIOLATION, tree_inorderErr2REQUIRES_VIOLATION, tree_inorderErr3REQUIRES_VIOLATION, tree_inorderErr1REQUIRES_VIOLATION, tree_inorderErr6REQUIRES_VIOLATION, tree_inorderErr7REQUIRES_VIOLATION, tree_inorderErr5REQUIRES_VIOLATION, tree_inorderErr0REQUIRES_VIOLATION, tree_delErr18ASSERT_VIOLATIONMEMORY_FREE, tree_delErr20REQUIRES_VIOLATION, tree_delErr9REQUIRES_VIOLATION, tree_delErr0REQUIRES_VIOLATION, tree_delErr11REQUIRES_VIOLATION, tree_delErr21REQUIRES_VIOLATION, tree_delErr10REQUIRES_VIOLATION, tree_delErr8ASSERT_VIOLATIONMEMORY_FREE, tree_delErr23REQUIRES_VIOLATION, tree_delErr6ASSERT_VIOLATIONMEMORY_FREE, tree_delErr12REQUIRES_VIOLATION, tree_delErr1REQUIRES_VIOLATION, tree_delErr7ASSERT_VIOLATIONMEMORY_FREE, tree_delErr22REQUIRES_VIOLATION, tree_delErr3REQUIRES_VIOLATION, tree_delErr2REQUIRES_VIOLATION, tree_delErr13REQUIRES_VIOLATION, tree_delErr4REQUIRES_VIOLATION, tree_delErr15REQUIRES_VIOLATION, tree_delErr14REQUIRES_VIOLATION, tree_delErr16REQUIRES_VIOLATION, tree_delErr5REQUIRES_VIOLATION, tree_delErr19ASSERT_VIOLATIONMEMORY_FREE, tree_delErr17ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-20 06:20:05,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:20:05,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1628188013, now seen corresponding path program 1 times [2020-10-20 06:20:05,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:20:05,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112870178] [2020-10-20 06:20:05,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-20 06:20:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:20:06,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 06:20:06,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:20:06,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:20:06,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:20:06,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:20:06,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112870178] [2020-10-20 06:20:06,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:20:06,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2020-10-20 06:20:06,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439018598] [2020-10-20 06:20:06,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:20:06,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:20:06,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:20:06,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:20:06,189 INFO L87 Difference]: Start difference. First operand 200 states and 222 transitions. Second operand 8 states. [2020-10-20 06:20:06,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:20:06,386 INFO L93 Difference]: Finished difference Result 265 states and 304 transitions. [2020-10-20 06:20:06,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:20:06,387 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-20 06:20:06,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:20:06,390 INFO L225 Difference]: With dead ends: 265 [2020-10-20 06:20:06,390 INFO L226 Difference]: Without dead ends: 265 [2020-10-20 06:20:06,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:20:06,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-10-20 06:20:06,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 248. [2020-10-20 06:20:06,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-20 06:20:06,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 299 transitions. [2020-10-20 06:20:06,413 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 299 transitions. Word has length 15 [2020-10-20 06:20:06,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:20:06,414 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 299 transitions. [2020-10-20 06:20:06,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:20:06,414 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 299 transitions. [2020-10-20 06:20:06,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:20:06,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:20:06,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:20:06,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 06:20:06,636 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, minErr1REQUIRES_VIOLATION, minErr0REQUIRES_VIOLATION, minErr5REQUIRES_VIOLATION, minErr4REQUIRES_VIOLATION, minErr3REQUIRES_VIOLATION, minErr2REQUIRES_VIOLATION, taskErr5REQUIRES_VIOLATION, taskErr7REQUIRES_VIOLATION, taskErr13ASSERT_VIOLATIONMEMORY_FREE, taskErr6REQUIRES_VIOLATION, taskErr8ASSERT_VIOLATIONMEMORY_FREE, taskErr9ASSERT_VIOLATIONMEMORY_FREE, taskErr10ASSERT_VIOLATIONMEMORY_FREE, taskErr0REQUIRES_VIOLATION, taskErr11ASSERT_VIOLATIONMEMORY_FREE, taskErr1REQUIRES_VIOLATION, taskErr3REQUIRES_VIOLATION, taskErr12ASSERT_VIOLATIONMEMORY_FREE, taskErr2REQUIRES_VIOLATION, taskErr4REQUIRES_VIOLATION, sizeErr0REQUIRES_VIOLATION, sizeErr1REQUIRES_VIOLATION, sizeErr2REQUIRES_VIOLATION, sizeErr3REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr5REQUIRES_VIOLATION, nondet_treeErr4REQUIRES_VIOLATION, nondet_treeErr3REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, tree_inorderErr4REQUIRES_VIOLATION, tree_inorderErr2REQUIRES_VIOLATION, tree_inorderErr3REQUIRES_VIOLATION, tree_inorderErr1REQUIRES_VIOLATION, tree_inorderErr6REQUIRES_VIOLATION, tree_inorderErr7REQUIRES_VIOLATION, tree_inorderErr5REQUIRES_VIOLATION, tree_inorderErr0REQUIRES_VIOLATION, tree_delErr18ASSERT_VIOLATIONMEMORY_FREE, tree_delErr20REQUIRES_VIOLATION, tree_delErr9REQUIRES_VIOLATION, tree_delErr0REQUIRES_VIOLATION, tree_delErr11REQUIRES_VIOLATION, tree_delErr21REQUIRES_VIOLATION, tree_delErr10REQUIRES_VIOLATION, tree_delErr8ASSERT_VIOLATIONMEMORY_FREE, tree_delErr23REQUIRES_VIOLATION, tree_delErr6ASSERT_VIOLATIONMEMORY_FREE, tree_delErr12REQUIRES_VIOLATION, tree_delErr1REQUIRES_VIOLATION, tree_delErr7ASSERT_VIOLATIONMEMORY_FREE, tree_delErr22REQUIRES_VIOLATION, tree_delErr3REQUIRES_VIOLATION, tree_delErr2REQUIRES_VIOLATION, tree_delErr13REQUIRES_VIOLATION, tree_delErr4REQUIRES_VIOLATION, tree_delErr15REQUIRES_VIOLATION, tree_delErr14REQUIRES_VIOLATION, tree_delErr16REQUIRES_VIOLATION, tree_delErr5REQUIRES_VIOLATION, tree_delErr19ASSERT_VIOLATIONMEMORY_FREE, tree_delErr17ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-20 06:20:06,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:20:06,636 INFO L82 PathProgramCache]: Analyzing trace with hash 602919432, now seen corresponding path program 1 times [2020-10-20 06:20:06,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:20:06,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776319374] [2020-10-20 06:20:06,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-20 06:20:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:20:06,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:20:06,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:20:06,729 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:20:06,729 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:20:06,741 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:20:06,742 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:20:06,742 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:20:06,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:20:06,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:20:06,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:20:06,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776319374] [2020-10-20 06:20:06,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:20:06,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-20 06:20:06,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401491233] [2020-10-20 06:20:06,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:20:06,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:20:06,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:20:06,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:20:06,849 INFO L87 Difference]: Start difference. First operand 248 states and 299 transitions. Second operand 5 states. [2020-10-20 06:20:11,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:20:11,616 INFO L93 Difference]: Finished difference Result 252 states and 303 transitions. [2020-10-20 06:20:11,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:20:11,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-20 06:20:11,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:20:11,619 INFO L225 Difference]: With dead ends: 252 [2020-10-20 06:20:11,619 INFO L226 Difference]: Without dead ends: 252 [2020-10-20 06:20:11,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:20:11,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-20 06:20:11,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 250. [2020-10-20 06:20:11,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-20 06:20:11,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 303 transitions. [2020-10-20 06:20:11,636 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 303 transitions. Word has length 14 [2020-10-20 06:20:11,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:20:11,637 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 303 transitions. [2020-10-20 06:20:11,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:20:11,637 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 303 transitions. [2020-10-20 06:20:11,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:20:11,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:20:11,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:20:11,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 06:20:11,850 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, minErr1REQUIRES_VIOLATION, minErr0REQUIRES_VIOLATION, minErr5REQUIRES_VIOLATION, minErr4REQUIRES_VIOLATION, minErr3REQUIRES_VIOLATION, minErr2REQUIRES_VIOLATION, taskErr5REQUIRES_VIOLATION, taskErr7REQUIRES_VIOLATION, taskErr13ASSERT_VIOLATIONMEMORY_FREE, taskErr6REQUIRES_VIOLATION, taskErr8ASSERT_VIOLATIONMEMORY_FREE, taskErr9ASSERT_VIOLATIONMEMORY_FREE, taskErr10ASSERT_VIOLATIONMEMORY_FREE, taskErr0REQUIRES_VIOLATION, taskErr11ASSERT_VIOLATIONMEMORY_FREE, taskErr1REQUIRES_VIOLATION, taskErr3REQUIRES_VIOLATION, taskErr12ASSERT_VIOLATIONMEMORY_FREE, taskErr2REQUIRES_VIOLATION, taskErr4REQUIRES_VIOLATION, sizeErr0REQUIRES_VIOLATION, sizeErr1REQUIRES_VIOLATION, sizeErr2REQUIRES_VIOLATION, sizeErr3REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr5REQUIRES_VIOLATION, nondet_treeErr4REQUIRES_VIOLATION, nondet_treeErr3REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, tree_inorderErr4REQUIRES_VIOLATION, tree_inorderErr2REQUIRES_VIOLATION, tree_inorderErr3REQUIRES_VIOLATION, tree_inorderErr1REQUIRES_VIOLATION, tree_inorderErr6REQUIRES_VIOLATION, tree_inorderErr7REQUIRES_VIOLATION, tree_inorderErr5REQUIRES_VIOLATION, tree_inorderErr0REQUIRES_VIOLATION, tree_delErr18ASSERT_VIOLATIONMEMORY_FREE, tree_delErr20REQUIRES_VIOLATION, tree_delErr9REQUIRES_VIOLATION, tree_delErr0REQUIRES_VIOLATION, tree_delErr11REQUIRES_VIOLATION, tree_delErr21REQUIRES_VIOLATION, tree_delErr10REQUIRES_VIOLATION, tree_delErr8ASSERT_VIOLATIONMEMORY_FREE, tree_delErr23REQUIRES_VIOLATION, tree_delErr6ASSERT_VIOLATIONMEMORY_FREE, tree_delErr12REQUIRES_VIOLATION, tree_delErr1REQUIRES_VIOLATION, tree_delErr7ASSERT_VIOLATIONMEMORY_FREE, tree_delErr22REQUIRES_VIOLATION, tree_delErr3REQUIRES_VIOLATION, tree_delErr2REQUIRES_VIOLATION, tree_delErr13REQUIRES_VIOLATION, tree_delErr4REQUIRES_VIOLATION, tree_delErr15REQUIRES_VIOLATION, tree_delErr14REQUIRES_VIOLATION, tree_delErr16REQUIRES_VIOLATION, tree_delErr5REQUIRES_VIOLATION, tree_delErr19ASSERT_VIOLATIONMEMORY_FREE, tree_delErr17ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-20 06:20:11,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:20:11,851 INFO L82 PathProgramCache]: Analyzing trace with hash 602919433, now seen corresponding path program 1 times [2020-10-20 06:20:11,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:20:11,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102316082] [2020-10-20 06:20:11,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-20 06:20:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:20:11,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:20:11,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:20:11,931 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:20:11,931 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:20:11,944 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:20:11,944 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:20:11,944 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:20:11,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:20:11,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:20:12,016 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 06:20:12,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:20:12,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102316082] [2020-10-20 06:20:12,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:20:12,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-20 06:20:12,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147422271] [2020-10-20 06:20:12,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:20:12,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:20:12,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:20:12,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:20:12,100 INFO L87 Difference]: Start difference. First operand 250 states and 303 transitions. Second operand 6 states. [2020-10-20 06:20:13,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:20:13,601 INFO L93 Difference]: Finished difference Result 260 states and 319 transitions. [2020-10-20 06:20:13,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:20:13,602 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-20 06:20:13,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:20:13,605 INFO L225 Difference]: With dead ends: 260 [2020-10-20 06:20:13,606 INFO L226 Difference]: Without dead ends: 260 [2020-10-20 06:20:13,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:20:13,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-20 06:20:13,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 253. [2020-10-20 06:20:13,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-20 06:20:13,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 307 transitions. [2020-10-20 06:20:13,627 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 307 transitions. Word has length 14 [2020-10-20 06:20:13,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:20:13,627 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 307 transitions. [2020-10-20 06:20:13,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:20:13,627 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 307 transitions. [2020-10-20 06:20:13,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 06:20:13,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:20:13,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:20:13,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-20 06:20:13,840 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, minErr1REQUIRES_VIOLATION, minErr0REQUIRES_VIOLATION, minErr5REQUIRES_VIOLATION, minErr4REQUIRES_VIOLATION, minErr3REQUIRES_VIOLATION, minErr2REQUIRES_VIOLATION, taskErr5REQUIRES_VIOLATION, taskErr7REQUIRES_VIOLATION, taskErr13ASSERT_VIOLATIONMEMORY_FREE, taskErr6REQUIRES_VIOLATION, taskErr8ASSERT_VIOLATIONMEMORY_FREE, taskErr9ASSERT_VIOLATIONMEMORY_FREE, taskErr10ASSERT_VIOLATIONMEMORY_FREE, taskErr0REQUIRES_VIOLATION, taskErr11ASSERT_VIOLATIONMEMORY_FREE, taskErr1REQUIRES_VIOLATION, taskErr3REQUIRES_VIOLATION, taskErr12ASSERT_VIOLATIONMEMORY_FREE, taskErr2REQUIRES_VIOLATION, taskErr4REQUIRES_VIOLATION, sizeErr0REQUIRES_VIOLATION, sizeErr1REQUIRES_VIOLATION, sizeErr2REQUIRES_VIOLATION, sizeErr3REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr5REQUIRES_VIOLATION, nondet_treeErr4REQUIRES_VIOLATION, nondet_treeErr3REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, tree_inorderErr4REQUIRES_VIOLATION, tree_inorderErr2REQUIRES_VIOLATION, tree_inorderErr3REQUIRES_VIOLATION, tree_inorderErr1REQUIRES_VIOLATION, tree_inorderErr6REQUIRES_VIOLATION, tree_inorderErr7REQUIRES_VIOLATION, tree_inorderErr5REQUIRES_VIOLATION, tree_inorderErr0REQUIRES_VIOLATION, tree_delErr18ASSERT_VIOLATIONMEMORY_FREE, tree_delErr20REQUIRES_VIOLATION, tree_delErr9REQUIRES_VIOLATION, tree_delErr0REQUIRES_VIOLATION, tree_delErr11REQUIRES_VIOLATION, tree_delErr21REQUIRES_VIOLATION, tree_delErr10REQUIRES_VIOLATION, tree_delErr8ASSERT_VIOLATIONMEMORY_FREE, tree_delErr23REQUIRES_VIOLATION, tree_delErr6ASSERT_VIOLATIONMEMORY_FREE, tree_delErr12REQUIRES_VIOLATION, tree_delErr1REQUIRES_VIOLATION, tree_delErr7ASSERT_VIOLATIONMEMORY_FREE, tree_delErr22REQUIRES_VIOLATION, tree_delErr3REQUIRES_VIOLATION, tree_delErr2REQUIRES_VIOLATION, tree_delErr13REQUIRES_VIOLATION, tree_delErr4REQUIRES_VIOLATION, tree_delErr15REQUIRES_VIOLATION, tree_delErr14REQUIRES_VIOLATION, tree_delErr16REQUIRES_VIOLATION, tree_delErr5REQUIRES_VIOLATION, tree_delErr19ASSERT_VIOLATIONMEMORY_FREE, tree_delErr17ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-20 06:20:13,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:20:13,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1700058851, now seen corresponding path program 1 times [2020-10-20 06:20:13,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:20:13,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654475658] [2020-10-20 06:20:13,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-20 06:20:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:20:13,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 06:20:13,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:20:14,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:20:14,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:20:14,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:20:14,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1654475658] [2020-10-20 06:20:14,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:20:14,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2020-10-20 06:20:14,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286296599] [2020-10-20 06:20:14,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:20:14,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:20:14,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:20:14,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:20:14,060 INFO L87 Difference]: Start difference. First operand 253 states and 307 transitions. Second operand 8 states. [2020-10-20 06:20:14,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:20:14,234 INFO L93 Difference]: Finished difference Result 274 states and 316 transitions. [2020-10-20 06:20:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:20:14,236 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-20 06:20:14,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:20:14,239 INFO L225 Difference]: With dead ends: 274 [2020-10-20 06:20:14,244 INFO L226 Difference]: Without dead ends: 274 [2020-10-20 06:20:14,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:20:14,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-20 06:20:14,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 257. [2020-10-20 06:20:14,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-20 06:20:14,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 310 transitions. [2020-10-20 06:20:14,275 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 310 transitions. Word has length 21 [2020-10-20 06:20:14,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:20:14,276 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 310 transitions. [2020-10-20 06:20:14,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:20:14,276 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 310 transitions. [2020-10-20 06:20:14,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-20 06:20:14,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:20:14,281 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:20:14,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-20 06:20:14,496 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, minErr1REQUIRES_VIOLATION, minErr0REQUIRES_VIOLATION, minErr5REQUIRES_VIOLATION, minErr4REQUIRES_VIOLATION, minErr3REQUIRES_VIOLATION, minErr2REQUIRES_VIOLATION, taskErr5REQUIRES_VIOLATION, taskErr7REQUIRES_VIOLATION, taskErr13ASSERT_VIOLATIONMEMORY_FREE, taskErr6REQUIRES_VIOLATION, taskErr8ASSERT_VIOLATIONMEMORY_FREE, taskErr9ASSERT_VIOLATIONMEMORY_FREE, taskErr10ASSERT_VIOLATIONMEMORY_FREE, taskErr0REQUIRES_VIOLATION, taskErr11ASSERT_VIOLATIONMEMORY_FREE, taskErr1REQUIRES_VIOLATION, taskErr3REQUIRES_VIOLATION, taskErr12ASSERT_VIOLATIONMEMORY_FREE, taskErr2REQUIRES_VIOLATION, taskErr4REQUIRES_VIOLATION, sizeErr0REQUIRES_VIOLATION, sizeErr1REQUIRES_VIOLATION, sizeErr2REQUIRES_VIOLATION, sizeErr3REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr5REQUIRES_VIOLATION, nondet_treeErr4REQUIRES_VIOLATION, nondet_treeErr3REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, tree_inorderErr4REQUIRES_VIOLATION, tree_inorderErr2REQUIRES_VIOLATION, tree_inorderErr3REQUIRES_VIOLATION, tree_inorderErr1REQUIRES_VIOLATION, tree_inorderErr6REQUIRES_VIOLATION, tree_inorderErr7REQUIRES_VIOLATION, tree_inorderErr5REQUIRES_VIOLATION, tree_inorderErr0REQUIRES_VIOLATION, tree_delErr18ASSERT_VIOLATIONMEMORY_FREE, tree_delErr20REQUIRES_VIOLATION, tree_delErr9REQUIRES_VIOLATION, tree_delErr0REQUIRES_VIOLATION, tree_delErr11REQUIRES_VIOLATION, tree_delErr21REQUIRES_VIOLATION, tree_delErr10REQUIRES_VIOLATION, tree_delErr8ASSERT_VIOLATIONMEMORY_FREE, tree_delErr23REQUIRES_VIOLATION, tree_delErr6ASSERT_VIOLATIONMEMORY_FREE, tree_delErr12REQUIRES_VIOLATION, tree_delErr1REQUIRES_VIOLATION, tree_delErr7ASSERT_VIOLATIONMEMORY_FREE, tree_delErr22REQUIRES_VIOLATION, tree_delErr3REQUIRES_VIOLATION, tree_delErr2REQUIRES_VIOLATION, tree_delErr13REQUIRES_VIOLATION, tree_delErr4REQUIRES_VIOLATION, tree_delErr15REQUIRES_VIOLATION, tree_delErr14REQUIRES_VIOLATION, tree_delErr16REQUIRES_VIOLATION, tree_delErr5REQUIRES_VIOLATION, tree_delErr19ASSERT_VIOLATIONMEMORY_FREE, tree_delErr17ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-20 06:20:14,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:20:14,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1372815063, now seen corresponding path program 1 times [2020-10-20 06:20:14,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:20:14,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907823177] [2020-10-20 06:20:14,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-20 06:20:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:20:14,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 06:20:14,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:20:14,709 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:20:14,709 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:20:14,711 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:20:14,711 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:20:14,712 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:20:14,840 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:20:14,840 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 41 [2020-10-20 06:20:14,842 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 06:20:14,848 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:20:14,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907823177] [2020-10-20 06:20:14,852 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-20 06:20:14,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [768190029] [2020-10-20 06:20:14,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 06:20:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:20:15,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-20 06:20:15,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:20:15,170 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:20:15,170 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:20:15,172 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:20:15,172 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:20:15,173 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:20:15,215 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:20:15,216 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2020-10-20 06:20:15,217 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:20:15,232 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-10-20 06:20:15,233 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:20:15,233 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2020-10-20 06:20:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-20 06:20:15,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:20:15,385 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_old(#valid)_BEFORE_CALL_5| (Array (_ BitVec 32) (_ BitVec 1))) (v_nondet_tree_~n~0.base_BEFORE_CALL_7 (_ BitVec 32))) (or (= (_ bv1 1) (select |c_#valid| v_nondet_tree_~n~0.base_BEFORE_CALL_7)) (exists ((v_prenex_1 (_ BitVec 32))) (and (= (_ bv1 1) (select |v_old(#valid)_BEFORE_CALL_5| v_prenex_1)) (not (= (_ bv1 1) (select |c_old(#valid)| v_prenex_1))))) (not (= (_ bv1 1) (select |v_old(#valid)_BEFORE_CALL_5| v_nondet_tree_~n~0.base_BEFORE_CALL_7))))) is different from false [2020-10-20 06:20:15,439 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_old(#valid)_BEFORE_CALL_6| (Array (_ BitVec 32) (_ BitVec 1))) (v_nondet_tree_~n~0.base_BEFORE_CALL_7 (_ BitVec 32))) (or (not (= (_ bv1 1) (select |v_old(#valid)_BEFORE_CALL_6| v_nondet_tree_~n~0.base_BEFORE_CALL_7))) (= (_ bv1 1) (select |c_#valid| v_nondet_tree_~n~0.base_BEFORE_CALL_7)) (exists ((v_prenex_2 (_ BitVec 32))) (and (= (_ bv1 1) (select |v_old(#valid)_BEFORE_CALL_6| v_prenex_2)) (not (= (_ bv1 1) (select |c_old(#valid)| v_prenex_2))))))) is different from false [2020-10-20 06:20:15,489 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 9 not checked. [2020-10-20 06:20:15,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:20:15,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2020-10-20 06:20:15,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148566059] [2020-10-20 06:20:15,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:20:15,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:20:15,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:20:15,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=29, Unknown=2, NotChecked=22, Total=72 [2020-10-20 06:20:15,492 INFO L87 Difference]: Start difference. First operand 257 states and 310 transitions. Second operand 8 states. [2020-10-20 06:20:15,565 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_old(#valid)| |c_#valid|) (forall ((|v_old(#valid)_BEFORE_CALL_6| (Array (_ BitVec 32) (_ BitVec 1))) (v_nondet_tree_~n~0.base_BEFORE_CALL_7 (_ BitVec 32))) (or (not (= (_ bv1 1) (select |v_old(#valid)_BEFORE_CALL_6| v_nondet_tree_~n~0.base_BEFORE_CALL_7))) (= (_ bv1 1) (select |c_#valid| v_nondet_tree_~n~0.base_BEFORE_CALL_7)) (exists ((v_prenex_2 (_ BitVec 32))) (and (= (_ bv1 1) (select |v_old(#valid)_BEFORE_CALL_6| v_prenex_2)) (not (= (_ bv1 1) (select |c_old(#valid)| v_prenex_2))))))) (exists ((nondet_tree_~n~0.base (_ BitVec 32))) (= (store |c_old(#valid)| nondet_tree_~n~0.base (_ bv1 1)) |c_#valid|))) is different from false [2020-10-20 06:20:15,572 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_old(#valid)| |c_#valid|) (forall ((|v_old(#valid)_BEFORE_CALL_6| (Array (_ BitVec 32) (_ BitVec 1))) (v_nondet_tree_~n~0.base_BEFORE_CALL_7 (_ BitVec 32))) (or (not (= (_ bv1 1) (select |v_old(#valid)_BEFORE_CALL_6| v_nondet_tree_~n~0.base_BEFORE_CALL_7))) (= (_ bv1 1) (select |c_#valid| v_nondet_tree_~n~0.base_BEFORE_CALL_7)) (exists ((v_prenex_2 (_ BitVec 32))) (and (= (_ bv1 1) (select |v_old(#valid)_BEFORE_CALL_6| v_prenex_2)) (not (= (_ bv1 1) (select |c_old(#valid)| v_prenex_2)))))))) is different from false [2020-10-20 06:20:15,622 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_old(#valid)| |c_#valid|) (forall ((|v_old(#valid)_BEFORE_CALL_5| (Array (_ BitVec 32) (_ BitVec 1))) (v_nondet_tree_~n~0.base_BEFORE_CALL_7 (_ BitVec 32))) (or (= (_ bv1 1) (select |c_#valid| v_nondet_tree_~n~0.base_BEFORE_CALL_7)) (exists ((v_prenex_1 (_ BitVec 32))) (and (= (_ bv1 1) (select |v_old(#valid)_BEFORE_CALL_5| v_prenex_1)) (not (= (_ bv1 1) (select |c_old(#valid)| v_prenex_1))))) (not (= (_ bv1 1) (select |v_old(#valid)_BEFORE_CALL_5| v_nondet_tree_~n~0.base_BEFORE_CALL_7))))) (exists ((nondet_tree_~n~0.base (_ BitVec 32))) (= (store |c_old(#valid)| nondet_tree_~n~0.base (_ bv1 1)) |c_#valid|))) is different from false [2020-10-20 06:20:15,633 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_old(#valid)| |c_#valid|) (forall ((|v_old(#valid)_BEFORE_CALL_5| (Array (_ BitVec 32) (_ BitVec 1))) (v_nondet_tree_~n~0.base_BEFORE_CALL_7 (_ BitVec 32))) (or (= (_ bv1 1) (select |c_#valid| v_nondet_tree_~n~0.base_BEFORE_CALL_7)) (exists ((v_prenex_1 (_ BitVec 32))) (and (= (_ bv1 1) (select |v_old(#valid)_BEFORE_CALL_5| v_prenex_1)) (not (= (_ bv1 1) (select |c_old(#valid)| v_prenex_1))))) (not (= (_ bv1 1) (select |v_old(#valid)_BEFORE_CALL_5| v_nondet_tree_~n~0.base_BEFORE_CALL_7)))))) is different from false [2020-10-20 06:20:58,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:20:58,753 INFO L93 Difference]: Finished difference Result 312 states and 385 transitions. [2020-10-20 06:20:58,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 06:20:58,754 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-10-20 06:20:58,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:20:58,760 INFO L225 Difference]: With dead ends: 312 [2020-10-20 06:20:58,761 INFO L226 Difference]: Without dead ends: 312 [2020-10-20 06:20:58,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 103 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=42, Invalid=64, Unknown=8, NotChecked=126, Total=240 [2020-10-20 06:20:58,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-20 06:20:58,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 295. [2020-10-20 06:20:58,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-10-20 06:20:58,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 367 transitions. [2020-10-20 06:20:58,785 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 367 transitions. Word has length 38 [2020-10-20 06:20:58,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:20:58,788 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 367 transitions. [2020-10-20 06:20:58,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:20:58,788 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 367 transitions. [2020-10-20 06:20:58,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 06:20:58,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:20:58,790 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:20:59,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk,8 mathsat -unsat_core_generation=3 [2020-10-20 06:20:59,192 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, minErr1REQUIRES_VIOLATION, minErr0REQUIRES_VIOLATION, minErr5REQUIRES_VIOLATION, minErr4REQUIRES_VIOLATION, minErr3REQUIRES_VIOLATION, minErr2REQUIRES_VIOLATION, taskErr5REQUIRES_VIOLATION, taskErr7REQUIRES_VIOLATION, taskErr13ASSERT_VIOLATIONMEMORY_FREE, taskErr6REQUIRES_VIOLATION, taskErr8ASSERT_VIOLATIONMEMORY_FREE, taskErr9ASSERT_VIOLATIONMEMORY_FREE, taskErr10ASSERT_VIOLATIONMEMORY_FREE, taskErr0REQUIRES_VIOLATION, taskErr11ASSERT_VIOLATIONMEMORY_FREE, taskErr1REQUIRES_VIOLATION, taskErr3REQUIRES_VIOLATION, taskErr12ASSERT_VIOLATIONMEMORY_FREE, taskErr2REQUIRES_VIOLATION, taskErr4REQUIRES_VIOLATION, sizeErr0REQUIRES_VIOLATION, sizeErr1REQUIRES_VIOLATION, sizeErr2REQUIRES_VIOLATION, sizeErr3REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr5REQUIRES_VIOLATION, nondet_treeErr4REQUIRES_VIOLATION, nondet_treeErr3REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, tree_inorderErr4REQUIRES_VIOLATION, tree_inorderErr2REQUIRES_VIOLATION, tree_inorderErr3REQUIRES_VIOLATION, tree_inorderErr1REQUIRES_VIOLATION, tree_inorderErr6REQUIRES_VIOLATION, tree_inorderErr7REQUIRES_VIOLATION, tree_inorderErr5REQUIRES_VIOLATION, tree_inorderErr0REQUIRES_VIOLATION, tree_delErr18ASSERT_VIOLATIONMEMORY_FREE, tree_delErr20REQUIRES_VIOLATION, tree_delErr9REQUIRES_VIOLATION, tree_delErr0REQUIRES_VIOLATION, tree_delErr11REQUIRES_VIOLATION, tree_delErr21REQUIRES_VIOLATION, tree_delErr10REQUIRES_VIOLATION, tree_delErr8ASSERT_VIOLATIONMEMORY_FREE, tree_delErr23REQUIRES_VIOLATION, tree_delErr6ASSERT_VIOLATIONMEMORY_FREE, tree_delErr12REQUIRES_VIOLATION, tree_delErr1REQUIRES_VIOLATION, tree_delErr7ASSERT_VIOLATIONMEMORY_FREE, tree_delErr22REQUIRES_VIOLATION, tree_delErr3REQUIRES_VIOLATION, tree_delErr2REQUIRES_VIOLATION, tree_delErr13REQUIRES_VIOLATION, tree_delErr4REQUIRES_VIOLATION, tree_delErr15REQUIRES_VIOLATION, tree_delErr14REQUIRES_VIOLATION, tree_delErr16REQUIRES_VIOLATION, tree_delErr5REQUIRES_VIOLATION, tree_delErr19ASSERT_VIOLATIONMEMORY_FREE, tree_delErr17ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-20 06:20:59,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:20:59,193 INFO L82 PathProgramCache]: Analyzing trace with hash -613602979, now seen corresponding path program 1 times [2020-10-20 06:20:59,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:20:59,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879357106] [2020-10-20 06:20:59,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-20 06:20:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:20:59,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-20 06:20:59,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:20:59,362 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:20:59,362 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:20:59,369 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:20:59,372 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:20:59,373 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:20:59,379 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:20:59,380 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:20:59,380 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2020-10-20 06:20:59,499 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:20:59,499 INFO L384 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 13 treesize of output 17 [2020-10-20 06:20:59,501 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:20:59,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879357106] [2020-10-20 06:20:59,503 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-20 06:20:59,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2034201707] [2020-10-20 06:20:59,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 06:20:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:20:59,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-20 06:20:59,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:20:59,937 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:20:59,937 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:20:59,947 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:20:59,950 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:20:59,950 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:20:59,958 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:20:59,959 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:20:59,959 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2020-10-20 06:21:00,018 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:21:00,019 INFO L384 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 13 treesize of output 17 [2020-10-20 06:21:00,020 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:21:00,022 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-20 06:21:00,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291992396] [2020-10-20 06:21:00,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:21:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:21:00,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-20 06:21:00,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:21:00,115 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:21:00,117 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:21:00,122 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:21:00,123 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:21:00,123 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:21:00,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:21:00,182 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2020-10-20 06:21:00,183 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:21:00,196 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:21:00,219 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:21:00,220 INFO L384 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 13 treesize of output 17 [2020-10-20 06:21:00,220 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-20 06:21:00,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:21:00,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 06:21:00,221 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 06:21:00,221 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:21:00,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 mathsat -unsat_core_generation=3,11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 06:21:00,841 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 06:21:00,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:21:00 BoogieIcfgContainer [2020-10-20 06:21:00,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:21:00,843 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:21:00,843 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:21:00,844 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:21:00,844 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:20:03" (3/4) ... [2020-10-20 06:21:00,849 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:21:00,849 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:21:00,851 INFO L168 Benchmark]: Toolchain (without parser) took 58698.41 ms. Allocated memory was 36.7 MB in the beginning and 77.6 MB in the end (delta: 40.9 MB). Free memory was 19.5 MB in the beginning and 50.6 MB in the end (delta: -31.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:21:00,851 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 34.1 MB. Free memory was 11.8 MB in the beginning and 11.8 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. [2020-10-20 06:21:00,852 INFO L168 Benchmark]: CACSL2BoogieTranslator took 468.52 ms. Allocated memory was 36.7 MB in the beginning and 44.0 MB in the end (delta: 7.3 MB). Free memory was 18.6 MB in the beginning and 20.3 MB in the end (delta: -1.7 MB). Peak memory consumption was 11.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:21:00,853 INFO L168 Benchmark]: Boogie Preprocessor took 64.69 ms. Allocated memory is still 44.0 MB. Free memory was 20.3 MB in the beginning and 17.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:21:00,856 INFO L168 Benchmark]: RCFGBuilder took 1062.91 ms. Allocated memory was 44.0 MB in the beginning and 47.2 MB in the end (delta: 3.1 MB). Free memory was 17.2 MB in the beginning and 11.4 MB in the end (delta: 5.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:21:00,858 INFO L168 Benchmark]: TraceAbstraction took 57085.41 ms. Allocated memory was 47.2 MB in the beginning and 77.6 MB in the end (delta: 30.4 MB). Free memory was 10.7 MB in the beginning and 51.6 MB in the end (delta: -40.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:21:00,858 INFO L168 Benchmark]: Witness Printer took 5.84 ms. Allocated memory is still 77.6 MB. Free memory was 51.6 MB in the beginning and 50.6 MB in the end (delta: 946.6 kB). Peak memory consumption was 946.6 kB. Max. memory is 14.3 GB. [2020-10-20 06:21:00,861 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 34.1 MB. Free memory was 11.8 MB in the beginning and 11.8 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 468.52 ms. Allocated memory was 36.7 MB in the beginning and 44.0 MB in the end (delta: 7.3 MB). Free memory was 18.6 MB in the beginning and 20.3 MB in the end (delta: -1.7 MB). Peak memory consumption was 11.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 64.69 ms. Allocated memory is still 44.0 MB. Free memory was 20.3 MB in the beginning and 17.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1062.91 ms. Allocated memory was 44.0 MB in the beginning and 47.2 MB in the end (delta: 3.1 MB). Free memory was 17.2 MB in the beginning and 11.4 MB in the end (delta: 5.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 57085.41 ms. Allocated memory was 47.2 MB in the beginning and 77.6 MB in the end (delta: 30.4 MB). Free memory was 10.7 MB in the beginning and 51.6 MB in the end (delta: -40.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 14.3 GB. * Witness Printer took 5.84 ms. Allocated memory is still 77.6 MB. Free memory was 51.6 MB in the beginning and 50.6 MB in the end (delta: 946.6 kB). Peak memory consumption was 946.6 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 30]: 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: [L110] CALL nondet_tree() [L25] COND FALSE !(__VERIFIER_nondet_bool()) [L28] struct node *n = (struct node *)malloc(sizeof(struct node)); [L29] n->data = __VERIFIER_nondet_int() [L30] CALL, EXPR nondet_tree() [L25] COND FALSE !(__VERIFIER_nondet_bool()) [L28] struct node *n = (struct node *)malloc(sizeof(struct node)); [L29] n->data = __VERIFIER_nondet_int() [L30] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; [L30] RET, EXPR nondet_tree() [L30] n->left = nondet_tree() [L31] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; [L31] RET, EXPR nondet_tree() [L31] n->right = nondet_tree() [L32] return n; [L30] RET, EXPR nondet_tree() [L30] n->left = nondet_tree() - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 209 locations, 64 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 56.9s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 51.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1434 SDtfs, 650 SDslu, 3769 SDs, 0 SdLazy, 1470 SolverSat, 203 SolverUnsat, 21 SolverUnknown, 0 SolverNotchecked, 45.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 281 GetRequests, 235 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=295occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 62 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 222 ConstructedInterpolants, 33 QuantifiedInterpolants, 26834 SizeOfPredicates, 28 NumberOfNonLiveVariables, 779 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 65/86 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...