./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/verifythis/tree_del_rec.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/verifythis/tree_del_rec.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 3d5c80ebc24229a709692e92e1e7cb6c93b163ba ............................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/verifythis/tree_del_rec.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 3d5c80ebc24229a709692e92e1e7cb6c93b163ba .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:27:06,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:27:06,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:27:06,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:27:06,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:27:06,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:27:06,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:27:06,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:27:06,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:27:06,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:27:06,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:27:06,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:27:06,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:27:06,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:27:06,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:27:06,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:27:06,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:27:06,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:27:06,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:27:06,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:27:06,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:27:06,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:27:06,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:27:06,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:27:06,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:27:06,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:27:06,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:27:06,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:27:06,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:27:06,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:27:06,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:27:06,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:27:06,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:27:06,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:27:06,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:27:06,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:27:06,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:27:06,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:27:06,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:27:06,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:27:06,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:27:06,640 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-10-19 18:27:06,665 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:27:06,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:27:06,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:27:06,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:27:06,667 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:27:06,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:27:06,668 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:27:06,668 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:27:06,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:27:06,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:27:06,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:27:06,669 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:27:06,669 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:27:06,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:27:06,670 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:27:06,670 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:27:06,670 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:27:06,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:27:06,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:27:06,671 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:27:06,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:27:06,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:27:06,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:27:06,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:27:06,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:27:06,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:27:06,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:27:06,672 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 -> 3d5c80ebc24229a709692e92e1e7cb6c93b163ba [2020-10-19 18:27:06,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:27:06,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:27:06,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:27:07,000 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:27:07,000 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:27:07,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/tree_del_rec.c [2020-10-19 18:27:07,067 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9635b37da/cda07d9ed71a4ac8b9884868e631ff09/FLAGb65e4a5b1 [2020-10-19 18:27:07,540 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:27:07,541 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_del_rec.c [2020-10-19 18:27:07,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9635b37da/cda07d9ed71a4ac8b9884868e631ff09/FLAGb65e4a5b1 [2020-10-19 18:27:07,907 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9635b37da/cda07d9ed71a4ac8b9884868e631ff09 [2020-10-19 18:27:07,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:27:07,918 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:27:07,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:27:07,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:27:07,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:27:07,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:27:07" (1/1) ... [2020-10-19 18:27:07,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5819c440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:27:07, skipping insertion in model container [2020-10-19 18:27:07,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:27:07" (1/1) ... [2020-10-19 18:27:07,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:27:07,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:27:08,156 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-19 18:27:08,160 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-19 18:27:08,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:27:08,197 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2020-10-19 18:27:08,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1395e4dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:27:08, skipping insertion in model container [2020-10-19 18:27:08,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:27:08,199 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2020-10-19 18:27:08,201 INFO L168 Benchmark]: Toolchain (without parser) took 288.13 ms. Allocated memory is still 1.0 GB. Free memory was 960.0 MB in the beginning and 949.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:27:08,202 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:27:08,203 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.18 ms. Allocated memory is still 1.0 GB. Free memory was 960.0 MB in the beginning and 949.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:27:08,205 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 279.18 ms. Allocated memory is still 1.0 GB. Free memory was 960.0 MB in the beginning and 949.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 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 0.1.25-906a4fb [2020-10-19 18:27:09,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:27:09,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:27:09,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:27:09,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:27:09,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:27:09,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:27:09,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:27:09,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:27:09,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:27:09,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:27:09,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:27:09,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:27:09,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:27:10,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:27:10,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:27:10,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:27:10,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:27:10,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:27:10,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:27:10,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:27:10,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:27:10,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:27:10,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:27:10,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:27:10,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:27:10,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:27:10,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:27:10,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:27:10,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:27:10,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:27:10,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:27:10,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:27:10,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:27:10,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:27:10,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:27:10,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:27:10,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:27:10,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:27:10,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:27:10,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:27:10,048 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2020-10-19 18:27:10,087 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:27:10,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:27:10,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:27:10,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:27:10,090 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:27:10,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:27:10,091 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:27:10,091 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:27:10,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:27:10,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:27:10,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:27:10,093 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:27:10,093 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:27:10,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:27:10,094 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:27:10,094 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 18:27:10,095 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 18:27:10,095 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:27:10,095 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:27:10,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:27:10,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:27:10,096 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:27:10,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:27:10,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:27:10,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:27:10,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:27:10,098 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 18:27:10,098 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 18:27:10,098 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:27:10,099 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 18:27:10,099 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 -> 3d5c80ebc24229a709692e92e1e7cb6c93b163ba [2020-10-19 18:27:10,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:27:10,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:27:10,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:27:10,449 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:27:10,449 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:27:10,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/tree_del_rec.c [2020-10-19 18:27:10,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fd99f735/cf5f3c7f9f584480adfeee1e6de04c82/FLAGecc7098db [2020-10-19 18:27:10,926 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:27:10,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_del_rec.c [2020-10-19 18:27:10,932 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fd99f735/cf5f3c7f9f584480adfeee1e6de04c82/FLAGecc7098db [2020-10-19 18:27:11,262 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fd99f735/cf5f3c7f9f584480adfeee1e6de04c82 [2020-10-19 18:27:11,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:27:11,271 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:27:11,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:27:11,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:27:11,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:27:11,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:27:11" (1/1) ... [2020-10-19 18:27:11,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ac0b4f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:27:11, skipping insertion in model container [2020-10-19 18:27:11,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:27:11" (1/1) ... [2020-10-19 18:27:11,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:27:11,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:27:11,514 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-19 18:27:11,518 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-19 18:27:11,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:27:11,559 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-10-19 18:27:11,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:27:11,577 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-19 18:27:11,580 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-19 18:27:11,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:27:11,623 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:27:11,770 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-19 18:27:11,772 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-19 18:27:11,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:27:11,820 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:27:11,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:27:11 WrapperNode [2020-10-19 18:27:11,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:27:11,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:27:11,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:27:11,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:27:11,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:27:11" (1/1) ... [2020-10-19 18:27:11,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:27:11" (1/1) ... [2020-10-19 18:27:11,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:27:11" (1/1) ... [2020-10-19 18:27:11,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:27:11" (1/1) ... [2020-10-19 18:27:11,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:27:11" (1/1) ... [2020-10-19 18:27:11,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:27:11" (1/1) ... [2020-10-19 18:27:11,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:27:11" (1/1) ... [2020-10-19 18:27:11,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:27:11,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:27:11,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:27:11,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:27:11,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:27:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:27:11,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:27:11,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:27:11,978 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_cycle_if_not [2020-10-19 18:27:11,979 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:27:11,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-19 18:27:11,979 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-10-19 18:27:11,979 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-10-19 18:27:11,979 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-10-19 18:27:11,979 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-10-19 18:27:11,980 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-10-19 18:27:11,980 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-10-19 18:27:11,980 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:27:11,980 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-19 18:27:11,980 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:27:11,980 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:27:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:27:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:27:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-19 18:27:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure assume_cycle_if_not [2020-10-19 18:27:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:27:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:27:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:27:11,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:27:11,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-19 18:27:11,982 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-10-19 18:27:11,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:27:11,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-19 18:27:11,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:27:11,983 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-10-19 18:27:11,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-19 18:27:11,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:27:11,983 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-10-19 18:27:11,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:27:11,983 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-10-19 18:27:11,983 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-10-19 18:27:11,984 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-10-19 18:27:11,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-19 18:27:11,984 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:27:11,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:27:11,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 18:27:11,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:27:11,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-19 18:27:11,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-19 18:27:12,950 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:27:12,950 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-19 18:27:12,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:27:12 BoogieIcfgContainer [2020-10-19 18:27:12,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:27:12,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:27:12,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:27:12,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:27:12,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:27:11" (1/3) ... [2020-10-19 18:27:12,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437ea675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:27:12, skipping insertion in model container [2020-10-19 18:27:12,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:27:11" (2/3) ... [2020-10-19 18:27:12,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437ea675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:27:12, skipping insertion in model container [2020-10-19 18:27:12,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:27:12" (3/3) ... [2020-10-19 18:27:12,961 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_del_rec.c [2020-10-19 18:27:12,974 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:27:12,983 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 55 error locations. [2020-10-19 18:27:12,999 INFO L253 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2020-10-19 18:27:13,023 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:27:13,023 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:27:13,024 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:27:13,024 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:27:13,025 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:27:13,025 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:27:13,025 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:27:13,026 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:27:13,052 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2020-10-19 18:27:13,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-19 18:27:13,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:27:13,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:27:13,066 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_delErr10ASSERT_VIOLATIONMEMORY_FREE, tree_delErr0REQUIRES_VIOLATION, tree_delErr9ASSERT_VIOLATIONMEMORY_FREE, tree_delErr11REQUIRES_VIOLATION, tree_delErr8ASSERT_VIOLATIONMEMORY_FREE, tree_delErr12REQUIRES_VIOLATION, tree_delErr1REQUIRES_VIOLATION, tree_delErr3REQUIRES_VIOLATION, tree_delErr2REQUIRES_VIOLATION, tree_delErr13REQUIRES_VIOLATION, tree_delErr4REQUIRES_VIOLATION, tree_delErr14REQUIRES_VIOLATION, tree_delErr5REQUIRES_VIOLATION, tree_delErr7REQUIRES_VIOLATION, tree_delErr6REQUIRES_VIOLATION]=== [2020-10-19 18:27:13,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:27:13,073 INFO L82 PathProgramCache]: Analyzing trace with hash -707804875, now seen corresponding path program 1 times [2020-10-19 18:27:13,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:27:13,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306201562] [2020-10-19 18:27:13,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-19 18:27:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:13,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 18:27:13,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:27:13,280 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:27:13,281 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:13,291 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:13,292 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:27:13,292 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:27:13,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:27:13,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:27:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:27:13,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306201562] [2020-10-19 18:27:13,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:27:13,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-19 18:27:13,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848564278] [2020-10-19 18:27:13,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:27:13,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:27:13,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:27:13,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:27:13,354 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 3 states. [2020-10-19 18:27:13,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:27:13,711 INFO L93 Difference]: Finished difference Result 187 states and 212 transitions. [2020-10-19 18:27:13,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:27:13,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-19 18:27:13,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:27:13,729 INFO L225 Difference]: With dead ends: 187 [2020-10-19 18:27:13,729 INFO L226 Difference]: Without dead ends: 183 [2020-10-19 18:27:13,731 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 [2020-10-19 18:27:13,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-19 18:27:13,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2020-10-19 18:27:13,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-19 18:27:13,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 203 transitions. [2020-10-19 18:27:13,800 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 203 transitions. Word has length 8 [2020-10-19 18:27:13,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:27:13,801 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 203 transitions. [2020-10-19 18:27:13,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:27:13,801 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 203 transitions. [2020-10-19 18:27:13,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-19 18:27:13,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:27:13,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:27:14,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 18:27:14,017 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_delErr10ASSERT_VIOLATIONMEMORY_FREE, tree_delErr0REQUIRES_VIOLATION, tree_delErr9ASSERT_VIOLATIONMEMORY_FREE, tree_delErr11REQUIRES_VIOLATION, tree_delErr8ASSERT_VIOLATIONMEMORY_FREE, tree_delErr12REQUIRES_VIOLATION, tree_delErr1REQUIRES_VIOLATION, tree_delErr3REQUIRES_VIOLATION, tree_delErr2REQUIRES_VIOLATION, tree_delErr13REQUIRES_VIOLATION, tree_delErr4REQUIRES_VIOLATION, tree_delErr14REQUIRES_VIOLATION, tree_delErr5REQUIRES_VIOLATION, tree_delErr7REQUIRES_VIOLATION, tree_delErr6REQUIRES_VIOLATION]=== [2020-10-19 18:27:14,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:27:14,019 INFO L82 PathProgramCache]: Analyzing trace with hash -707804874, now seen corresponding path program 1 times [2020-10-19 18:27:14,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:27:14,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972393290] [2020-10-19 18:27:14,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-19 18:27:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:14,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:27:14,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:27:14,113 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:27:14,114 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:14,124 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:14,125 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:27:14,125 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:27:14,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:27:14,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:27:14,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:27:14,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972393290] [2020-10-19 18:27:14,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:27:14,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-10-19 18:27:14,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86789346] [2020-10-19 18:27:14,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:27:14,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:27:14,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:27:14,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:27:14,205 INFO L87 Difference]: Start difference. First operand 181 states and 203 transitions. Second operand 4 states. [2020-10-19 18:27:14,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:27:14,863 INFO L93 Difference]: Finished difference Result 180 states and 202 transitions. [2020-10-19 18:27:14,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:27:14,864 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-19 18:27:14,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:27:14,867 INFO L225 Difference]: With dead ends: 180 [2020-10-19 18:27:14,867 INFO L226 Difference]: Without dead ends: 180 [2020-10-19 18:27:14,868 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 [2020-10-19 18:27:14,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-19 18:27:14,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2020-10-19 18:27:14,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-19 18:27:14,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 202 transitions. [2020-10-19 18:27:14,887 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 202 transitions. Word has length 8 [2020-10-19 18:27:14,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:27:14,887 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 202 transitions. [2020-10-19 18:27:14,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:27:14,888 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 202 transitions. [2020-10-19 18:27:14,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:27:14,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:27:14,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:27:15,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 18:27:15,109 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_delErr10ASSERT_VIOLATIONMEMORY_FREE, tree_delErr0REQUIRES_VIOLATION, tree_delErr9ASSERT_VIOLATIONMEMORY_FREE, tree_delErr11REQUIRES_VIOLATION, tree_delErr8ASSERT_VIOLATIONMEMORY_FREE, tree_delErr12REQUIRES_VIOLATION, tree_delErr1REQUIRES_VIOLATION, tree_delErr3REQUIRES_VIOLATION, tree_delErr2REQUIRES_VIOLATION, tree_delErr13REQUIRES_VIOLATION, tree_delErr4REQUIRES_VIOLATION, tree_delErr14REQUIRES_VIOLATION, tree_delErr5REQUIRES_VIOLATION, tree_delErr7REQUIRES_VIOLATION, tree_delErr6REQUIRES_VIOLATION]=== [2020-10-19 18:27:15,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:27:15,110 INFO L82 PathProgramCache]: Analyzing trace with hash -528181038, now seen corresponding path program 1 times [2020-10-19 18:27:15,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:27:15,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909621006] [2020-10-19 18:27:15,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-19 18:27:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:15,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-19 18:27:15,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:27:15,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:27:15,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:27:15,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:27:15,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909621006] [2020-10-19 18:27:15,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:27:15,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2020-10-19 18:27:15,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816866350] [2020-10-19 18:27:15,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:27:15,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:27:15,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:27:15,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:27:15,311 INFO L87 Difference]: Start difference. First operand 180 states and 202 transitions. Second operand 8 states. [2020-10-19 18:27:15,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:27:15,496 INFO L93 Difference]: Finished difference Result 245 states and 284 transitions. [2020-10-19 18:27:15,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:27:15,497 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-19 18:27:15,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:27:15,500 INFO L225 Difference]: With dead ends: 245 [2020-10-19 18:27:15,500 INFO L226 Difference]: Without dead ends: 245 [2020-10-19 18:27:15,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:27:15,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-19 18:27:15,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 228. [2020-10-19 18:27:15,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-19 18:27:15,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 279 transitions. [2020-10-19 18:27:15,527 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 279 transitions. Word has length 15 [2020-10-19 18:27:15,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:27:15,528 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 279 transitions. [2020-10-19 18:27:15,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:27:15,528 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 279 transitions. [2020-10-19 18:27:15,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 18:27:15,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:27:15,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:27:15,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 18:27:15,749 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_delErr10ASSERT_VIOLATIONMEMORY_FREE, tree_delErr0REQUIRES_VIOLATION, tree_delErr9ASSERT_VIOLATIONMEMORY_FREE, tree_delErr11REQUIRES_VIOLATION, tree_delErr8ASSERT_VIOLATIONMEMORY_FREE, tree_delErr12REQUIRES_VIOLATION, tree_delErr1REQUIRES_VIOLATION, tree_delErr3REQUIRES_VIOLATION, tree_delErr2REQUIRES_VIOLATION, tree_delErr13REQUIRES_VIOLATION, tree_delErr4REQUIRES_VIOLATION, tree_delErr14REQUIRES_VIOLATION, tree_delErr5REQUIRES_VIOLATION, tree_delErr7REQUIRES_VIOLATION, tree_delErr6REQUIRES_VIOLATION]=== [2020-10-19 18:27:15,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:27:15,750 INFO L82 PathProgramCache]: Analyzing trace with hash -468129946, now seen corresponding path program 1 times [2020-10-19 18:27:15,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:27:15,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624739033] [2020-10-19 18:27:15,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-19 18:27:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:15,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:27:15,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:27:15,855 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:27:15,856 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:15,858 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:15,859 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:27:15,859 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:27:15,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:27:15,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:27:15,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:27:15,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624739033] [2020-10-19 18:27:15,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:27:15,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-19 18:27:15,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906347763] [2020-10-19 18:27:15,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:27:15,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:27:15,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:27:15,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:27:15,935 INFO L87 Difference]: Start difference. First operand 228 states and 279 transitions. Second operand 5 states. [2020-10-19 18:27:18,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:27:18,768 INFO L93 Difference]: Finished difference Result 232 states and 283 transitions. [2020-10-19 18:27:18,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:27:18,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-19 18:27:18,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:27:18,771 INFO L225 Difference]: With dead ends: 232 [2020-10-19 18:27:18,771 INFO L226 Difference]: Without dead ends: 232 [2020-10-19 18:27:18,772 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 [2020-10-19 18:27:18,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-19 18:27:18,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2020-10-19 18:27:18,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-19 18:27:18,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 283 transitions. [2020-10-19 18:27:18,789 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 283 transitions. Word has length 14 [2020-10-19 18:27:18,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:27:18,790 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 283 transitions. [2020-10-19 18:27:18,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:27:18,790 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 283 transitions. [2020-10-19 18:27:18,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 18:27:18,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:27:18,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:27:18,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-19 18:27:19,001 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_delErr10ASSERT_VIOLATIONMEMORY_FREE, tree_delErr0REQUIRES_VIOLATION, tree_delErr9ASSERT_VIOLATIONMEMORY_FREE, tree_delErr11REQUIRES_VIOLATION, tree_delErr8ASSERT_VIOLATIONMEMORY_FREE, tree_delErr12REQUIRES_VIOLATION, tree_delErr1REQUIRES_VIOLATION, tree_delErr3REQUIRES_VIOLATION, tree_delErr2REQUIRES_VIOLATION, tree_delErr13REQUIRES_VIOLATION, tree_delErr4REQUIRES_VIOLATION, tree_delErr14REQUIRES_VIOLATION, tree_delErr5REQUIRES_VIOLATION, tree_delErr7REQUIRES_VIOLATION, tree_delErr6REQUIRES_VIOLATION]=== [2020-10-19 18:27:19,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:27:19,002 INFO L82 PathProgramCache]: Analyzing trace with hash -468129945, now seen corresponding path program 1 times [2020-10-19 18:27:19,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:27:19,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385427945] [2020-10-19 18:27:19,003 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 [2020-10-19 18:27:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:19,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:27:19,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:27:19,129 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:27:19,130 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:19,137 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:19,138 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:27:19,138 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:27:19,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:27:19,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:27:19,262 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:27:19,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:27:19,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385427945] [2020-10-19 18:27:19,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:27:19,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-19 18:27:19,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263974349] [2020-10-19 18:27:19,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:27:19,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:27:19,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:27:19,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:27:19,322 INFO L87 Difference]: Start difference. First operand 230 states and 283 transitions. Second operand 6 states. [2020-10-19 18:27:20,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:27:20,868 INFO L93 Difference]: Finished difference Result 240 states and 299 transitions. [2020-10-19 18:27:20,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:27:20,870 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-19 18:27:20,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:27:20,872 INFO L225 Difference]: With dead ends: 240 [2020-10-19 18:27:20,872 INFO L226 Difference]: Without dead ends: 240 [2020-10-19 18:27:20,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:27:20,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-19 18:27:20,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 233. [2020-10-19 18:27:20,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-19 18:27:20,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 287 transitions. [2020-10-19 18:27:20,903 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 287 transitions. Word has length 14 [2020-10-19 18:27:20,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:27:20,904 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 287 transitions. [2020-10-19 18:27:20,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:27:20,904 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 287 transitions. [2020-10-19 18:27:20,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:27:20,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:27:20,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:27:21,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-19 18:27:21,129 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_delErr10ASSERT_VIOLATIONMEMORY_FREE, tree_delErr0REQUIRES_VIOLATION, tree_delErr9ASSERT_VIOLATIONMEMORY_FREE, tree_delErr11REQUIRES_VIOLATION, tree_delErr8ASSERT_VIOLATIONMEMORY_FREE, tree_delErr12REQUIRES_VIOLATION, tree_delErr1REQUIRES_VIOLATION, tree_delErr3REQUIRES_VIOLATION, tree_delErr2REQUIRES_VIOLATION, tree_delErr13REQUIRES_VIOLATION, tree_delErr4REQUIRES_VIOLATION, tree_delErr14REQUIRES_VIOLATION, tree_delErr5REQUIRES_VIOLATION, tree_delErr7REQUIRES_VIOLATION, tree_delErr6REQUIRES_VIOLATION]=== [2020-10-19 18:27:21,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:27:21,130 INFO L82 PathProgramCache]: Analyzing trace with hash 446420862, now seen corresponding path program 1 times [2020-10-19 18:27:21,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:27:21,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1324301462] [2020-10-19 18:27:21,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-19 18:27:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:21,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-19 18:27:21,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:27:21,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:27:21,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:27:21,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:27:21,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1324301462] [2020-10-19 18:27:21,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:27:21,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2020-10-19 18:27:21,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247933194] [2020-10-19 18:27:21,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:27:21,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:27:21,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:27:21,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:27:21,347 INFO L87 Difference]: Start difference. First operand 233 states and 287 transitions. Second operand 8 states. [2020-10-19 18:27:21,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:27:21,514 INFO L93 Difference]: Finished difference Result 254 states and 296 transitions. [2020-10-19 18:27:21,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:27:21,515 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-19 18:27:21,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:27:21,522 INFO L225 Difference]: With dead ends: 254 [2020-10-19 18:27:21,522 INFO L226 Difference]: Without dead ends: 254 [2020-10-19 18:27:21,523 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 [2020-10-19 18:27:21,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-19 18:27:21,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 237. [2020-10-19 18:27:21,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-19 18:27:21,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 290 transitions. [2020-10-19 18:27:21,538 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 290 transitions. Word has length 21 [2020-10-19 18:27:21,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:27:21,538 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 290 transitions. [2020-10-19 18:27:21,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:27:21,539 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 290 transitions. [2020-10-19 18:27:21,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-19 18:27:21,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:27:21,542 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] [2020-10-19 18:27:21,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-19 18:27:21,744 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_delErr10ASSERT_VIOLATIONMEMORY_FREE, tree_delErr0REQUIRES_VIOLATION, tree_delErr9ASSERT_VIOLATIONMEMORY_FREE, tree_delErr11REQUIRES_VIOLATION, tree_delErr8ASSERT_VIOLATIONMEMORY_FREE, tree_delErr12REQUIRES_VIOLATION, tree_delErr1REQUIRES_VIOLATION, tree_delErr3REQUIRES_VIOLATION, tree_delErr2REQUIRES_VIOLATION, tree_delErr13REQUIRES_VIOLATION, tree_delErr4REQUIRES_VIOLATION, tree_delErr14REQUIRES_VIOLATION, tree_delErr5REQUIRES_VIOLATION, tree_delErr7REQUIRES_VIOLATION, tree_delErr6REQUIRES_VIOLATION]=== [2020-10-19 18:27:21,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:27:21,745 INFO L82 PathProgramCache]: Analyzing trace with hash -2081267767, now seen corresponding path program 1 times [2020-10-19 18:27:21,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:27:21,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354671013] [2020-10-19 18:27:21,746 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 [2020-10-19 18:27:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:21,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 18:27:21,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:27:21,955 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:27:21,955 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:21,957 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:21,958 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:27:21,958 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:27:22,069 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:22,069 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 [2020-10-19 18:27:22,071 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-19 18:27:22,073 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:27:22,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354671013] [2020-10-19 18:27:22,075 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-19 18:27:22,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1533299659] [2020-10-19 18:27:22,076 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 [2020-10-19 18:27:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:22,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-19 18:27:22,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:27:22,347 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:27:22,348 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:22,350 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:22,351 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:27:22,351 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:27:22,392 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:22,393 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 [2020-10-19 18:27:22,394 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:22,409 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-10-19 18:27:22,410 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:27:22,410 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2020-10-19 18:27:22,418 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-19 18:27:22,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:27:22,588 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 [2020-10-19 18:27:22,671 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 [2020-10-19 18:27:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 9 not checked. [2020-10-19 18:27:22,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:27:22,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2020-10-19 18:27:22,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224878330] [2020-10-19 18:27:22,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:27:22,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:27:22,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:27:22,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=29, Unknown=2, NotChecked=22, Total=72 [2020-10-19 18:27:22,745 INFO L87 Difference]: Start difference. First operand 237 states and 290 transitions. Second operand 8 states. [2020-10-19 18:27:22,817 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 [2020-10-19 18:27:22,825 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 [2020-10-19 18:27:22,871 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 [2020-10-19 18:27:22,882 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 [2020-10-19 18:28:05,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:28:05,857 INFO L93 Difference]: Finished difference Result 279 states and 342 transitions. [2020-10-19 18:28:05,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:28:05,858 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-10-19 18:28:05,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:28:05,861 INFO L225 Difference]: With dead ends: 279 [2020-10-19 18:28:05,861 INFO L226 Difference]: Without dead ends: 279 [2020-10-19 18:28:05,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 102 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=42, Invalid=64, Unknown=8, NotChecked=126, Total=240 [2020-10-19 18:28:05,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-19 18:28:05,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 262. [2020-10-19 18:28:05,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-19 18:28:05,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 324 transitions. [2020-10-19 18:28:05,877 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 324 transitions. Word has length 38 [2020-10-19 18:28:05,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:28:05,878 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 324 transitions. [2020-10-19 18:28:05,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:28:05,878 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 324 transitions. [2020-10-19 18:28:05,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 18:28:05,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:28:05,880 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] [2020-10-19 18:28:06,282 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 [2020-10-19 18:28:06,284 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_delErr10ASSERT_VIOLATIONMEMORY_FREE, tree_delErr0REQUIRES_VIOLATION, tree_delErr9ASSERT_VIOLATIONMEMORY_FREE, tree_delErr11REQUIRES_VIOLATION, tree_delErr8ASSERT_VIOLATIONMEMORY_FREE, tree_delErr12REQUIRES_VIOLATION, tree_delErr1REQUIRES_VIOLATION, tree_delErr3REQUIRES_VIOLATION, tree_delErr2REQUIRES_VIOLATION, tree_delErr13REQUIRES_VIOLATION, tree_delErr4REQUIRES_VIOLATION, tree_delErr14REQUIRES_VIOLATION, tree_delErr5REQUIRES_VIOLATION, tree_delErr7REQUIRES_VIOLATION, tree_delErr6REQUIRES_VIOLATION]=== [2020-10-19 18:28:06,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:28:06,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1275297701, now seen corresponding path program 1 times [2020-10-19 18:28:06,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:28:06,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393343037] [2020-10-19 18:28:06,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-19 18:28:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:28:06,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-19 18:28:06,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:28:06,437 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:28:06,438 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:28:06,445 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:28:06,449 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:28:06,450 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:28:06,457 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:28:06,458 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:28:06,458 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2020-10-19 18:28:06,597 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:28:06,598 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 [2020-10-19 18:28:06,599 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:28:06,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393343037] [2020-10-19 18:28:06,601 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-19 18:28:06,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [558164595] [2020-10-19 18:28:06,601 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 [2020-10-19 18:28:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:28:06,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-19 18:28:06,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:28:06,838 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:28:06,838 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:28:06,847 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:28:06,851 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:28:06,851 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:28:06,859 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:28:06,860 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:28:06,860 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2020-10-19 18:28:06,919 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:28:06,920 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 [2020-10-19 18:28:06,921 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:28:06,922 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-19 18:28:06,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220618542] [2020-10-19 18:28:06,923 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 [2020-10-19 18:28:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:28:07,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-19 18:28:07,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:28:07,029 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:28:07,029 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:28:07,037 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:28:07,037 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:28:07,038 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:28:07,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:28:07,094 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 [2020-10-19 18:28:07,095 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:28:07,110 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:28:07,121 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:28:07,122 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 [2020-10-19 18:28:07,123 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-19 18:28:07,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:28:07,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-19 18:28:07,123 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-19 18:28:07,123 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:28:07,739 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 [2020-10-19 18:28:07,755 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-19 18:28:07,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:28:07 BoogieIcfgContainer [2020-10-19 18:28:07,756 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:28:07,756 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:28:07,757 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:28:07,757 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:28:07,757 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:27:12" (3/4) ... [2020-10-19 18:28:07,761 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:28:07,761 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:28:07,763 INFO L168 Benchmark]: Toolchain (without parser) took 56496.66 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 268.4 MB). Free memory was 949.2 MB in the beginning and 1.2 GB in the end (delta: -238.8 MB). Peak memory consumption was 29.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:28:07,763 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:28:07,764 INFO L168 Benchmark]: CACSL2BoogieTranslator took 550.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 943.9 MB in the beginning and 1.1 GB in the end (delta: -202.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:28:07,765 INFO L168 Benchmark]: Boogie Preprocessor took 86.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:28:07,765 INFO L168 Benchmark]: RCFGBuilder took 1042.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 59.0 MB). Peak memory consumption was 59.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:28:07,766 INFO L168 Benchmark]: TraceAbstraction took 54802.19 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 110.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -102.0 MB). Peak memory consumption was 8.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:28:07,767 INFO L168 Benchmark]: Witness Printer took 5.29 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:28:07,769 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 550.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 943.9 MB in the beginning and 1.1 GB in the end (delta: -202.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 86.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1042.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 59.0 MB). Peak memory consumption was 59.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 54802.19 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 110.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -102.0 MB). Peak memory consumption was 8.7 MB. Max. memory is 11.5 GB. * Witness Printer took 5.29 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 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: [L102] 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, 189 locations, 55 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 54.7s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 48.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1303 SDtfs, 772 SDslu, 3327 SDs, 0 SdLazy, 1252 SolverSat, 280 SolverUnsat, 20 SolverUnknown, 0 SolverNotchecked, 43.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 280 GetRequests, 234 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=262occurred 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: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s 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...