./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/verifythis/tree_del_iter.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 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_iter.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3996209b60f87d3e4d0d43d86633911b8e11add8 ........................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -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_iter.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3996209b60f87d3e4d0d43d86633911b8e11add8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:27:06,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:27:06,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:27:06,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:27:06,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:27:06,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:27:06,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:27:06,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:27:06,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:27:06,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:27:06,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:27:06,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:27:06,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:27:06,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:27:06,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:27:06,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:27:06,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:27:06,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:27:06,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:27:06,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:27:06,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:27:06,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:27:06,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:27:06,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:27:06,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:27:06,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:27:06,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:27:06,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:27:06,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:27:06,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:27:06,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:27:06,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:27:06,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:27:06,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:27:06,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:27:06,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:27:06,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:27:06,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:27:06,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:27:06,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:27:06,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:27:06,415 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-10-19 18:27:06,455 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:27:06,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:27:06,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:27:06,458 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:27:06,458 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:27:06,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:27:06,458 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:27:06,459 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:27:06,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:27:06,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:27:06,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:27:06,461 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:27:06,461 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:27:06,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:27:06,462 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:27:06,462 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:27:06,462 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:27:06,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:27:06,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:27:06,463 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:27:06,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:27:06,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:27:06,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:27:06,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:27:06,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:27:06,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:27:06,465 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:27:06,466 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3996209b60f87d3e4d0d43d86633911b8e11add8 [2020-10-19 18:27:06,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:27:06,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:27:06,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:27:06,819 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:27:06,820 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:27:06,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/tree_del_iter.c [2020-10-19 18:27:06,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be826f879/1182cea9922443198f1ce5e5cfb72b60/FLAGb75f38e25 [2020-10-19 18:27:07,349 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:27:07,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_del_iter.c [2020-10-19 18:27:07,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be826f879/1182cea9922443198f1ce5e5cfb72b60/FLAGb75f38e25 [2020-10-19 18:27:07,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be826f879/1182cea9922443198f1ce5e5cfb72b60 [2020-10-19 18:27:07,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:27:07,716 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:27:07,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:27:07,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:27:07,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:27:07,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:27:07" (1/1) ... [2020-10-19 18:27:07,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d387d 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 18:27:07,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:27:07" (1/1) ... [2020-10-19 18:27:07,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:27:07,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:27:07,966 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-19 18:27:07,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:27:08,001 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 18:27:08,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2901dd18 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 18:27:08,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:27:08,003 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2020-10-19 18:27:08,006 INFO L168 Benchmark]: Toolchain (without parser) took 293.69 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:27:08,007 INFO L168 Benchmark]: CDTParser took 0.58 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 18:27:08,008 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.91 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:27:08,010 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 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 285.91 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 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 18:27:09,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:27:09,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:27:09,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:27:09,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:27:09,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:27:09,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:27:09,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:27:09,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:27:09,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:27:09,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:27:09,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:27:09,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:27:09,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:27:09,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:27:09,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:27:09,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:27:09,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:27:09,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:27:09,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:27:09,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:27:09,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:27:09,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:27:09,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:27:09,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:27:09,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:27:09,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:27:09,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:27:09,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:27:09,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:27:09,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:27:09,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:27:09,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:27:09,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:27:09,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:27:09,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:27:09,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:27:09,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:27:09,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:27:09,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:27:09,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:27:09,980 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2020-10-19 18:27:10,017 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:27:10,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:27:10,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:27:10,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:27:10,020 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:27:10,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:27:10,020 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:27:10,021 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:27:10,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:27:10,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:27:10,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:27:10,023 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:27:10,023 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:27:10,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:27:10,024 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:27:10,024 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 18:27:10,024 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 18:27:10,025 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:27:10,025 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:27:10,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:27:10,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:27:10,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:27:10,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:27:10,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:27:10,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:27:10,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:27:10,027 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 18:27:10,028 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 18:27:10,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:27:10,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 18:27:10,028 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3996209b60f87d3e4d0d43d86633911b8e11add8 [2020-10-19 18:27:10,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:27:10,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:27:10,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:27:10,384 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:27:10,385 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:27:10,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/tree_del_iter.c [2020-10-19 18:27:10,447 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b29e80161/ad9e7a8954cf4ea1b94637d1afd1fdb2/FLAG172cecab1 [2020-10-19 18:27:10,882 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:27:10,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_del_iter.c [2020-10-19 18:27:10,890 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b29e80161/ad9e7a8954cf4ea1b94637d1afd1fdb2/FLAG172cecab1 [2020-10-19 18:27:11,253 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b29e80161/ad9e7a8954cf4ea1b94637d1afd1fdb2 [2020-10-19 18:27:11,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:27:11,264 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:27:11,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:27:11,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:27:11,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:27:11,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:27:11" (1/1) ... [2020-10-19 18:27:11,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@741c8cd 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 18:27:11,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:27:11" (1/1) ... [2020-10-19 18:27:11,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:27:11,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:27:11,611 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-19 18:27:11,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:27:11,733 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-10-19 18:27:11,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:27:11,751 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-19 18:27:11,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:27:11,772 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:27:11,797 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-19 18:27:11,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:27:11,838 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:27:11,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:27:11 WrapperNode [2020-10-19 18:27:11,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:27:11,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:27:11,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:27:11,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:27:11,855 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 18:27:11,856 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 18:27:11,870 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 18:27:11,871 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 18:27:11,895 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 18:27:11,903 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 18:27:11,909 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 18:27:11,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:27:11,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:27:11,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:27:11,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:27:11,922 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 18:27:11,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:27:11,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:27:11,989 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_cycle_if_not [2020-10-19 18:27:11,989 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:27:11,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-19 18:27:11,989 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-10-19 18:27:11,989 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-10-19 18:27:11,990 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-10-19 18:27:11,990 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-10-19 18:27:11,990 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-10-19 18:27:11,990 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-10-19 18:27:11,991 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:27:11,991 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-19 18:27:11,991 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:27:11,991 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:27:11,991 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:27:11,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:27:11,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-19 18:27:11,992 INFO L130 BoogieDeclarations]: Found specification of procedure assume_cycle_if_not [2020-10-19 18:27:11,992 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:27:11,993 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:27:11,993 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:27:11,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:27:11,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-19 18:27:11,994 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-10-19 18:27:11,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:27:11,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-19 18:27:11,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:27:11,994 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-10-19 18:27:11,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-19 18:27:11,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:27:11,995 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-10-19 18:27:11,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:27:11,996 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-10-19 18:27:11,996 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-10-19 18:27:11,996 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-10-19 18:27:11,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-19 18:27:11,997 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:27:11,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:27:11,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 18:27:11,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:27:11,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-19 18:27:11,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-19 18:27:12,978 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:27:12,979 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-19 18:27:12,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:27:12 BoogieIcfgContainer [2020-10-19 18:27:12,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:27:12,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:27:12,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:27:12,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:27:12,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:27:11" (1/3) ... [2020-10-19 18:27:12,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf7ef3c 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 18:27:12,991 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 18:27:12,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf7ef3c 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 18:27:12,992 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 18:27:12,996 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_del_iter.c [2020-10-19 18:27:13,008 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:27:13,019 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 64 error locations. [2020-10-19 18:27:13,033 INFO L253 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2020-10-19 18:27:13,052 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:27:13,052 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:27:13,052 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:27:13,053 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:27:13,053 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:27:13,053 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:27:13,053 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:27:13,053 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:27:13,080 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states. [2020-10-19 18:27:13,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-19 18:27:13,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:27:13,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:27:13,092 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, minErr1REQUIRES_VIOLATION, minErr0REQUIRES_VIOLATION, minErr5REQUIRES_VIOLATION, minErr4REQUIRES_VIOLATION, minErr3REQUIRES_VIOLATION, minErr2REQUIRES_VIOLATION, taskErr5REQUIRES_VIOLATION, taskErr7REQUIRES_VIOLATION, taskErr13ASSERT_VIOLATIONMEMORY_FREE, taskErr6REQUIRES_VIOLATION, taskErr8ASSERT_VIOLATIONMEMORY_FREE, taskErr9ASSERT_VIOLATIONMEMORY_FREE, taskErr10ASSERT_VIOLATIONMEMORY_FREE, taskErr0REQUIRES_VIOLATION, taskErr11ASSERT_VIOLATIONMEMORY_FREE, taskErr1REQUIRES_VIOLATION, taskErr3REQUIRES_VIOLATION, taskErr12ASSERT_VIOLATIONMEMORY_FREE, taskErr2REQUIRES_VIOLATION, taskErr4REQUIRES_VIOLATION, sizeErr0REQUIRES_VIOLATION, sizeErr1REQUIRES_VIOLATION, sizeErr2REQUIRES_VIOLATION, sizeErr3REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr5REQUIRES_VIOLATION, nondet_treeErr4REQUIRES_VIOLATION, nondet_treeErr3REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, tree_inorderErr4REQUIRES_VIOLATION, tree_inorderErr2REQUIRES_VIOLATION, tree_inorderErr3REQUIRES_VIOLATION, tree_inorderErr1REQUIRES_VIOLATION, tree_inorderErr6REQUIRES_VIOLATION, tree_inorderErr7REQUIRES_VIOLATION, tree_inorderErr5REQUIRES_VIOLATION, tree_inorderErr0REQUIRES_VIOLATION, tree_delErr18ASSERT_VIOLATIONMEMORY_FREE, tree_delErr20REQUIRES_VIOLATION, tree_delErr9REQUIRES_VIOLATION, tree_delErr0REQUIRES_VIOLATION, tree_delErr11REQUIRES_VIOLATION, tree_delErr21REQUIRES_VIOLATION, tree_delErr10REQUIRES_VIOLATION, tree_delErr8ASSERT_VIOLATIONMEMORY_FREE, tree_delErr23REQUIRES_VIOLATION, tree_delErr6ASSERT_VIOLATIONMEMORY_FREE, tree_delErr12REQUIRES_VIOLATION, tree_delErr1REQUIRES_VIOLATION, tree_delErr7ASSERT_VIOLATIONMEMORY_FREE, tree_delErr22REQUIRES_VIOLATION, tree_delErr3REQUIRES_VIOLATION, tree_delErr2REQUIRES_VIOLATION, tree_delErr13REQUIRES_VIOLATION, tree_delErr4REQUIRES_VIOLATION, tree_delErr15REQUIRES_VIOLATION, tree_delErr14REQUIRES_VIOLATION, tree_delErr16REQUIRES_VIOLATION, tree_delErr5REQUIRES_VIOLATION, tree_delErr19ASSERT_VIOLATIONMEMORY_FREE, tree_delErr17ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:27:13,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:27:13,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1976905783, now seen corresponding path program 1 times [2020-10-19 18:27:13,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:27:13,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94735974] [2020-10-19 18:27:13,113 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 18:27:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:13,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 18:27:13,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:27:13,311 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 18:27:13,312 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:13,323 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:13,324 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:27:13,324 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:27:13,333 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 18:27:13,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:27:13,353 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 18:27:13,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94735974] [2020-10-19 18:27:13,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:27:13,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-19 18:27:13,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286007857] [2020-10-19 18:27:13,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:27:13,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:27:13,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:27:13,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:27:13,382 INFO L87 Difference]: Start difference. First operand 209 states. Second operand 3 states. [2020-10-19 18:27:13,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:27:13,787 INFO L93 Difference]: Finished difference Result 207 states and 232 transitions. [2020-10-19 18:27:13,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:27:13,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-19 18:27:13,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:27:13,806 INFO L225 Difference]: With dead ends: 207 [2020-10-19 18:27:13,807 INFO L226 Difference]: Without dead ends: 203 [2020-10-19 18:27:13,809 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 18:27:13,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-19 18:27:13,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 201. [2020-10-19 18:27:13,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-19 18:27:13,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 223 transitions. [2020-10-19 18:27:13,883 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 223 transitions. Word has length 8 [2020-10-19 18:27:13,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:27:13,884 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 223 transitions. [2020-10-19 18:27:13,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:27:13,885 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 223 transitions. [2020-10-19 18:27:13,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-19 18:27:13,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:27:13,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:27:14,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 18:27:14,101 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, minErr1REQUIRES_VIOLATION, minErr0REQUIRES_VIOLATION, minErr5REQUIRES_VIOLATION, minErr4REQUIRES_VIOLATION, minErr3REQUIRES_VIOLATION, minErr2REQUIRES_VIOLATION, taskErr5REQUIRES_VIOLATION, taskErr7REQUIRES_VIOLATION, taskErr13ASSERT_VIOLATIONMEMORY_FREE, taskErr6REQUIRES_VIOLATION, taskErr8ASSERT_VIOLATIONMEMORY_FREE, taskErr9ASSERT_VIOLATIONMEMORY_FREE, taskErr10ASSERT_VIOLATIONMEMORY_FREE, taskErr0REQUIRES_VIOLATION, taskErr11ASSERT_VIOLATIONMEMORY_FREE, taskErr1REQUIRES_VIOLATION, taskErr3REQUIRES_VIOLATION, taskErr12ASSERT_VIOLATIONMEMORY_FREE, taskErr2REQUIRES_VIOLATION, taskErr4REQUIRES_VIOLATION, sizeErr0REQUIRES_VIOLATION, sizeErr1REQUIRES_VIOLATION, sizeErr2REQUIRES_VIOLATION, sizeErr3REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr5REQUIRES_VIOLATION, nondet_treeErr4REQUIRES_VIOLATION, nondet_treeErr3REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, tree_inorderErr4REQUIRES_VIOLATION, tree_inorderErr2REQUIRES_VIOLATION, tree_inorderErr3REQUIRES_VIOLATION, tree_inorderErr1REQUIRES_VIOLATION, tree_inorderErr6REQUIRES_VIOLATION, tree_inorderErr7REQUIRES_VIOLATION, tree_inorderErr5REQUIRES_VIOLATION, tree_inorderErr0REQUIRES_VIOLATION, tree_delErr18ASSERT_VIOLATIONMEMORY_FREE, tree_delErr20REQUIRES_VIOLATION, tree_delErr9REQUIRES_VIOLATION, tree_delErr0REQUIRES_VIOLATION, tree_delErr11REQUIRES_VIOLATION, tree_delErr21REQUIRES_VIOLATION, tree_delErr10REQUIRES_VIOLATION, tree_delErr8ASSERT_VIOLATIONMEMORY_FREE, tree_delErr23REQUIRES_VIOLATION, tree_delErr6ASSERT_VIOLATIONMEMORY_FREE, tree_delErr12REQUIRES_VIOLATION, tree_delErr1REQUIRES_VIOLATION, tree_delErr7ASSERT_VIOLATIONMEMORY_FREE, tree_delErr22REQUIRES_VIOLATION, tree_delErr3REQUIRES_VIOLATION, tree_delErr2REQUIRES_VIOLATION, tree_delErr13REQUIRES_VIOLATION, tree_delErr4REQUIRES_VIOLATION, tree_delErr15REQUIRES_VIOLATION, tree_delErr14REQUIRES_VIOLATION, tree_delErr16REQUIRES_VIOLATION, tree_delErr5REQUIRES_VIOLATION, tree_delErr19ASSERT_VIOLATIONMEMORY_FREE, tree_delErr17ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:27:14,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:27:14,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1976905784, now seen corresponding path program 1 times [2020-10-19 18:27:14,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:27:14,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208249521] [2020-10-19 18:27:14,104 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 18:27:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:14,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:27:14,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:27:14,186 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 18:27:14,187 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:14,193 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:14,194 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:27:14,194 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:27:14,203 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 18:27:14,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:27:14,256 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 18:27:14,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208249521] [2020-10-19 18:27:14,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:27:14,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-10-19 18:27:14,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170642141] [2020-10-19 18:27:14,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:27:14,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:27:14,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:27:14,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:27:14,260 INFO L87 Difference]: Start difference. First operand 201 states and 223 transitions. Second operand 4 states. [2020-10-19 18:27:14,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:27:14,980 INFO L93 Difference]: Finished difference Result 200 states and 222 transitions. [2020-10-19 18:27:14,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:27:14,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-19 18:27:14,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:27:14,984 INFO L225 Difference]: With dead ends: 200 [2020-10-19 18:27:14,985 INFO L226 Difference]: Without dead ends: 200 [2020-10-19 18:27:14,985 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 18:27:14,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-19 18:27:15,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2020-10-19 18:27:15,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-19 18:27:15,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 222 transitions. [2020-10-19 18:27:15,005 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 222 transitions. Word has length 8 [2020-10-19 18:27:15,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:27:15,006 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 222 transitions. [2020-10-19 18:27:15,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:27:15,006 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 222 transitions. [2020-10-19 18:27:15,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:27:15,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:27:15,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:27:15,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 18:27:15,220 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, minErr1REQUIRES_VIOLATION, minErr0REQUIRES_VIOLATION, minErr5REQUIRES_VIOLATION, minErr4REQUIRES_VIOLATION, minErr3REQUIRES_VIOLATION, minErr2REQUIRES_VIOLATION, taskErr5REQUIRES_VIOLATION, taskErr7REQUIRES_VIOLATION, taskErr13ASSERT_VIOLATIONMEMORY_FREE, taskErr6REQUIRES_VIOLATION, taskErr8ASSERT_VIOLATIONMEMORY_FREE, taskErr9ASSERT_VIOLATIONMEMORY_FREE, taskErr10ASSERT_VIOLATIONMEMORY_FREE, taskErr0REQUIRES_VIOLATION, taskErr11ASSERT_VIOLATIONMEMORY_FREE, taskErr1REQUIRES_VIOLATION, taskErr3REQUIRES_VIOLATION, taskErr12ASSERT_VIOLATIONMEMORY_FREE, taskErr2REQUIRES_VIOLATION, taskErr4REQUIRES_VIOLATION, sizeErr0REQUIRES_VIOLATION, sizeErr1REQUIRES_VIOLATION, sizeErr2REQUIRES_VIOLATION, sizeErr3REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr5REQUIRES_VIOLATION, nondet_treeErr4REQUIRES_VIOLATION, nondet_treeErr3REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, tree_inorderErr4REQUIRES_VIOLATION, tree_inorderErr2REQUIRES_VIOLATION, tree_inorderErr3REQUIRES_VIOLATION, tree_inorderErr1REQUIRES_VIOLATION, tree_inorderErr6REQUIRES_VIOLATION, tree_inorderErr7REQUIRES_VIOLATION, tree_inorderErr5REQUIRES_VIOLATION, tree_inorderErr0REQUIRES_VIOLATION, tree_delErr18ASSERT_VIOLATIONMEMORY_FREE, tree_delErr20REQUIRES_VIOLATION, tree_delErr9REQUIRES_VIOLATION, tree_delErr0REQUIRES_VIOLATION, tree_delErr11REQUIRES_VIOLATION, tree_delErr21REQUIRES_VIOLATION, tree_delErr10REQUIRES_VIOLATION, tree_delErr8ASSERT_VIOLATIONMEMORY_FREE, tree_delErr23REQUIRES_VIOLATION, tree_delErr6ASSERT_VIOLATIONMEMORY_FREE, tree_delErr12REQUIRES_VIOLATION, tree_delErr1REQUIRES_VIOLATION, tree_delErr7ASSERT_VIOLATIONMEMORY_FREE, tree_delErr22REQUIRES_VIOLATION, tree_delErr3REQUIRES_VIOLATION, tree_delErr2REQUIRES_VIOLATION, tree_delErr13REQUIRES_VIOLATION, tree_delErr4REQUIRES_VIOLATION, tree_delErr15REQUIRES_VIOLATION, tree_delErr14REQUIRES_VIOLATION, tree_delErr16REQUIRES_VIOLATION, tree_delErr5REQUIRES_VIOLATION, tree_delErr19ASSERT_VIOLATIONMEMORY_FREE, tree_delErr17ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:27:15,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:27:15,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1628188013, now seen corresponding path program 1 times [2020-10-19 18:27:15,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:27:15,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204450531] [2020-10-19 18:27:15,222 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 18:27:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:15,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-19 18:27:15,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:27:15,389 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 18:27:15,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:27:15,442 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 18:27:15,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204450531] [2020-10-19 18:27:15,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:27:15,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2020-10-19 18:27:15,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192332980] [2020-10-19 18:27:15,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:27:15,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:27:15,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:27:15,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:27:15,445 INFO L87 Difference]: Start difference. First operand 200 states and 222 transitions. Second operand 8 states. [2020-10-19 18:27:15,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:27:15,640 INFO L93 Difference]: Finished difference Result 265 states and 304 transitions. [2020-10-19 18:27:15,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:27:15,641 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-19 18:27:15,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:27:15,644 INFO L225 Difference]: With dead ends: 265 [2020-10-19 18:27:15,644 INFO L226 Difference]: Without dead ends: 265 [2020-10-19 18:27:15,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:27:15,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-10-19 18:27:15,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 248. [2020-10-19 18:27:15,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-19 18:27:15,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 299 transitions. [2020-10-19 18:27:15,671 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 299 transitions. Word has length 15 [2020-10-19 18:27:15,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:27:15,672 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 299 transitions. [2020-10-19 18:27:15,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:27:15,672 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 299 transitions. [2020-10-19 18:27:15,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 18:27:15,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:27:15,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:27:15,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 18:27:15,896 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, minErr1REQUIRES_VIOLATION, minErr0REQUIRES_VIOLATION, minErr5REQUIRES_VIOLATION, minErr4REQUIRES_VIOLATION, minErr3REQUIRES_VIOLATION, minErr2REQUIRES_VIOLATION, taskErr5REQUIRES_VIOLATION, taskErr7REQUIRES_VIOLATION, taskErr13ASSERT_VIOLATIONMEMORY_FREE, taskErr6REQUIRES_VIOLATION, taskErr8ASSERT_VIOLATIONMEMORY_FREE, taskErr9ASSERT_VIOLATIONMEMORY_FREE, taskErr10ASSERT_VIOLATIONMEMORY_FREE, taskErr0REQUIRES_VIOLATION, taskErr11ASSERT_VIOLATIONMEMORY_FREE, taskErr1REQUIRES_VIOLATION, taskErr3REQUIRES_VIOLATION, taskErr12ASSERT_VIOLATIONMEMORY_FREE, taskErr2REQUIRES_VIOLATION, taskErr4REQUIRES_VIOLATION, sizeErr0REQUIRES_VIOLATION, sizeErr1REQUIRES_VIOLATION, sizeErr2REQUIRES_VIOLATION, sizeErr3REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr5REQUIRES_VIOLATION, nondet_treeErr4REQUIRES_VIOLATION, nondet_treeErr3REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, tree_inorderErr4REQUIRES_VIOLATION, tree_inorderErr2REQUIRES_VIOLATION, tree_inorderErr3REQUIRES_VIOLATION, tree_inorderErr1REQUIRES_VIOLATION, tree_inorderErr6REQUIRES_VIOLATION, tree_inorderErr7REQUIRES_VIOLATION, tree_inorderErr5REQUIRES_VIOLATION, tree_inorderErr0REQUIRES_VIOLATION, tree_delErr18ASSERT_VIOLATIONMEMORY_FREE, tree_delErr20REQUIRES_VIOLATION, tree_delErr9REQUIRES_VIOLATION, tree_delErr0REQUIRES_VIOLATION, tree_delErr11REQUIRES_VIOLATION, tree_delErr21REQUIRES_VIOLATION, tree_delErr10REQUIRES_VIOLATION, tree_delErr8ASSERT_VIOLATIONMEMORY_FREE, tree_delErr23REQUIRES_VIOLATION, tree_delErr6ASSERT_VIOLATIONMEMORY_FREE, tree_delErr12REQUIRES_VIOLATION, tree_delErr1REQUIRES_VIOLATION, tree_delErr7ASSERT_VIOLATIONMEMORY_FREE, tree_delErr22REQUIRES_VIOLATION, tree_delErr3REQUIRES_VIOLATION, tree_delErr2REQUIRES_VIOLATION, tree_delErr13REQUIRES_VIOLATION, tree_delErr4REQUIRES_VIOLATION, tree_delErr15REQUIRES_VIOLATION, tree_delErr14REQUIRES_VIOLATION, tree_delErr16REQUIRES_VIOLATION, tree_delErr5REQUIRES_VIOLATION, tree_delErr19ASSERT_VIOLATIONMEMORY_FREE, tree_delErr17ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:27:15,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:27:15,897 INFO L82 PathProgramCache]: Analyzing trace with hash 602919432, now seen corresponding path program 1 times [2020-10-19 18:27:15,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:27:15,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563704784] [2020-10-19 18:27:15,899 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 18:27:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:15,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:27:15,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:27:15,997 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 18:27:15,998 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:16,001 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:16,001 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:27:16,002 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:27:16,018 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 18:27:16,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:27:16,067 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 18:27:16,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563704784] [2020-10-19 18:27:16,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:27:16,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-19 18:27:16,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800822342] [2020-10-19 18:27:16,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:27:16,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:27:16,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:27:16,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:27:16,070 INFO L87 Difference]: Start difference. First operand 248 states and 299 transitions. Second operand 5 states. [2020-10-19 18:27:20,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:27:20,961 INFO L93 Difference]: Finished difference Result 252 states and 303 transitions. [2020-10-19 18:27:20,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:27:20,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-19 18:27:20,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:27:20,968 INFO L225 Difference]: With dead ends: 252 [2020-10-19 18:27:20,969 INFO L226 Difference]: Without dead ends: 252 [2020-10-19 18:27:20,971 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 18:27:20,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-19 18:27:20,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 250. [2020-10-19 18:27:20,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 18:27:20,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 303 transitions. [2020-10-19 18:27:20,986 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 303 transitions. Word has length 14 [2020-10-19 18:27:20,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:27:20,986 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 303 transitions. [2020-10-19 18:27:20,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:27:20,987 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 303 transitions. [2020-10-19 18:27:20,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 18:27:20,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:27:20,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:27:21,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-19 18:27:21,200 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, minErr1REQUIRES_VIOLATION, minErr0REQUIRES_VIOLATION, minErr5REQUIRES_VIOLATION, minErr4REQUIRES_VIOLATION, minErr3REQUIRES_VIOLATION, minErr2REQUIRES_VIOLATION, taskErr5REQUIRES_VIOLATION, taskErr7REQUIRES_VIOLATION, taskErr13ASSERT_VIOLATIONMEMORY_FREE, taskErr6REQUIRES_VIOLATION, taskErr8ASSERT_VIOLATIONMEMORY_FREE, taskErr9ASSERT_VIOLATIONMEMORY_FREE, taskErr10ASSERT_VIOLATIONMEMORY_FREE, taskErr0REQUIRES_VIOLATION, taskErr11ASSERT_VIOLATIONMEMORY_FREE, taskErr1REQUIRES_VIOLATION, taskErr3REQUIRES_VIOLATION, taskErr12ASSERT_VIOLATIONMEMORY_FREE, taskErr2REQUIRES_VIOLATION, taskErr4REQUIRES_VIOLATION, sizeErr0REQUIRES_VIOLATION, sizeErr1REQUIRES_VIOLATION, sizeErr2REQUIRES_VIOLATION, sizeErr3REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr5REQUIRES_VIOLATION, nondet_treeErr4REQUIRES_VIOLATION, nondet_treeErr3REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, tree_inorderErr4REQUIRES_VIOLATION, tree_inorderErr2REQUIRES_VIOLATION, tree_inorderErr3REQUIRES_VIOLATION, tree_inorderErr1REQUIRES_VIOLATION, tree_inorderErr6REQUIRES_VIOLATION, tree_inorderErr7REQUIRES_VIOLATION, tree_inorderErr5REQUIRES_VIOLATION, tree_inorderErr0REQUIRES_VIOLATION, tree_delErr18ASSERT_VIOLATIONMEMORY_FREE, tree_delErr20REQUIRES_VIOLATION, tree_delErr9REQUIRES_VIOLATION, tree_delErr0REQUIRES_VIOLATION, tree_delErr11REQUIRES_VIOLATION, tree_delErr21REQUIRES_VIOLATION, tree_delErr10REQUIRES_VIOLATION, tree_delErr8ASSERT_VIOLATIONMEMORY_FREE, tree_delErr23REQUIRES_VIOLATION, tree_delErr6ASSERT_VIOLATIONMEMORY_FREE, tree_delErr12REQUIRES_VIOLATION, tree_delErr1REQUIRES_VIOLATION, tree_delErr7ASSERT_VIOLATIONMEMORY_FREE, tree_delErr22REQUIRES_VIOLATION, tree_delErr3REQUIRES_VIOLATION, tree_delErr2REQUIRES_VIOLATION, tree_delErr13REQUIRES_VIOLATION, tree_delErr4REQUIRES_VIOLATION, tree_delErr15REQUIRES_VIOLATION, tree_delErr14REQUIRES_VIOLATION, tree_delErr16REQUIRES_VIOLATION, tree_delErr5REQUIRES_VIOLATION, tree_delErr19ASSERT_VIOLATIONMEMORY_FREE, tree_delErr17ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:27:21,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:27:21,201 INFO L82 PathProgramCache]: Analyzing trace with hash 602919433, now seen corresponding path program 1 times [2020-10-19 18:27:21,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:27:21,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840891544] [2020-10-19 18:27:21,202 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 18:27:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:21,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:27:21,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:27:21,299 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 18:27:21,300 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:21,306 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:21,306 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:27:21,306 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:27:21,327 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 18:27:21,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:27:21,398 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:27:21,483 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 18:27:21,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1840891544] [2020-10-19 18:27:21,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:27:21,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-19 18:27:21,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473157003] [2020-10-19 18:27:21,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:27:21,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:27:21,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:27:21,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:27:21,486 INFO L87 Difference]: Start difference. First operand 250 states and 303 transitions. Second operand 6 states. [2020-10-19 18:27:23,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:27:23,075 INFO L93 Difference]: Finished difference Result 260 states and 319 transitions. [2020-10-19 18:27:23,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:27:23,077 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-19 18:27:23,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:27:23,079 INFO L225 Difference]: With dead ends: 260 [2020-10-19 18:27:23,079 INFO L226 Difference]: Without dead ends: 260 [2020-10-19 18:27:23,080 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 18:27:23,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-19 18:27:23,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 253. [2020-10-19 18:27:23,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-19 18:27:23,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 307 transitions. [2020-10-19 18:27:23,106 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 307 transitions. Word has length 14 [2020-10-19 18:27:23,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:27:23,107 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 307 transitions. [2020-10-19 18:27:23,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:27:23,107 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 307 transitions. [2020-10-19 18:27:23,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:27:23,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:27:23,109 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 18:27:23,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-19 18:27:23,313 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, minErr1REQUIRES_VIOLATION, minErr0REQUIRES_VIOLATION, minErr5REQUIRES_VIOLATION, minErr4REQUIRES_VIOLATION, minErr3REQUIRES_VIOLATION, minErr2REQUIRES_VIOLATION, taskErr5REQUIRES_VIOLATION, taskErr7REQUIRES_VIOLATION, taskErr13ASSERT_VIOLATIONMEMORY_FREE, taskErr6REQUIRES_VIOLATION, taskErr8ASSERT_VIOLATIONMEMORY_FREE, taskErr9ASSERT_VIOLATIONMEMORY_FREE, taskErr10ASSERT_VIOLATIONMEMORY_FREE, taskErr0REQUIRES_VIOLATION, taskErr11ASSERT_VIOLATIONMEMORY_FREE, taskErr1REQUIRES_VIOLATION, taskErr3REQUIRES_VIOLATION, taskErr12ASSERT_VIOLATIONMEMORY_FREE, taskErr2REQUIRES_VIOLATION, taskErr4REQUIRES_VIOLATION, sizeErr0REQUIRES_VIOLATION, sizeErr1REQUIRES_VIOLATION, sizeErr2REQUIRES_VIOLATION, sizeErr3REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr5REQUIRES_VIOLATION, nondet_treeErr4REQUIRES_VIOLATION, nondet_treeErr3REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, tree_inorderErr4REQUIRES_VIOLATION, tree_inorderErr2REQUIRES_VIOLATION, tree_inorderErr3REQUIRES_VIOLATION, tree_inorderErr1REQUIRES_VIOLATION, tree_inorderErr6REQUIRES_VIOLATION, tree_inorderErr7REQUIRES_VIOLATION, tree_inorderErr5REQUIRES_VIOLATION, tree_inorderErr0REQUIRES_VIOLATION, tree_delErr18ASSERT_VIOLATIONMEMORY_FREE, tree_delErr20REQUIRES_VIOLATION, tree_delErr9REQUIRES_VIOLATION, tree_delErr0REQUIRES_VIOLATION, tree_delErr11REQUIRES_VIOLATION, tree_delErr21REQUIRES_VIOLATION, tree_delErr10REQUIRES_VIOLATION, tree_delErr8ASSERT_VIOLATIONMEMORY_FREE, tree_delErr23REQUIRES_VIOLATION, tree_delErr6ASSERT_VIOLATIONMEMORY_FREE, tree_delErr12REQUIRES_VIOLATION, tree_delErr1REQUIRES_VIOLATION, tree_delErr7ASSERT_VIOLATIONMEMORY_FREE, tree_delErr22REQUIRES_VIOLATION, tree_delErr3REQUIRES_VIOLATION, tree_delErr2REQUIRES_VIOLATION, tree_delErr13REQUIRES_VIOLATION, tree_delErr4REQUIRES_VIOLATION, tree_delErr15REQUIRES_VIOLATION, tree_delErr14REQUIRES_VIOLATION, tree_delErr16REQUIRES_VIOLATION, tree_delErr5REQUIRES_VIOLATION, tree_delErr19ASSERT_VIOLATIONMEMORY_FREE, tree_delErr17ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:27:23,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:27:23,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1700058851, now seen corresponding path program 1 times [2020-10-19 18:27:23,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:27:23,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88263400] [2020-10-19 18:27:23,315 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 18:27:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:23,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-19 18:27:23,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:27:23,507 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 18:27:23,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:27:23,563 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 18:27:23,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88263400] [2020-10-19 18:27:23,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:27:23,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2020-10-19 18:27:23,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256355525] [2020-10-19 18:27:23,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:27:23,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:27:23,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:27:23,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:27:23,567 INFO L87 Difference]: Start difference. First operand 253 states and 307 transitions. Second operand 8 states. [2020-10-19 18:27:23,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:27:23,747 INFO L93 Difference]: Finished difference Result 274 states and 316 transitions. [2020-10-19 18:27:23,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:27:23,748 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-19 18:27:23,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:27:23,750 INFO L225 Difference]: With dead ends: 274 [2020-10-19 18:27:23,751 INFO L226 Difference]: Without dead ends: 274 [2020-10-19 18:27:23,753 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 18:27:23,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-19 18:27:23,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 257. [2020-10-19 18:27:23,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-19 18:27:23,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 310 transitions. [2020-10-19 18:27:23,770 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 310 transitions. Word has length 21 [2020-10-19 18:27:23,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:27:23,770 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 310 transitions. [2020-10-19 18:27:23,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:27:23,771 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 310 transitions. [2020-10-19 18:27:23,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-19 18:27:23,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:27:23,776 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 18:27:23,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-19 18:27:23,989 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, minErr1REQUIRES_VIOLATION, minErr0REQUIRES_VIOLATION, minErr5REQUIRES_VIOLATION, minErr4REQUIRES_VIOLATION, minErr3REQUIRES_VIOLATION, minErr2REQUIRES_VIOLATION, taskErr5REQUIRES_VIOLATION, taskErr7REQUIRES_VIOLATION, taskErr13ASSERT_VIOLATIONMEMORY_FREE, taskErr6REQUIRES_VIOLATION, taskErr8ASSERT_VIOLATIONMEMORY_FREE, taskErr9ASSERT_VIOLATIONMEMORY_FREE, taskErr10ASSERT_VIOLATIONMEMORY_FREE, taskErr0REQUIRES_VIOLATION, taskErr11ASSERT_VIOLATIONMEMORY_FREE, taskErr1REQUIRES_VIOLATION, taskErr3REQUIRES_VIOLATION, taskErr12ASSERT_VIOLATIONMEMORY_FREE, taskErr2REQUIRES_VIOLATION, taskErr4REQUIRES_VIOLATION, sizeErr0REQUIRES_VIOLATION, sizeErr1REQUIRES_VIOLATION, sizeErr2REQUIRES_VIOLATION, sizeErr3REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr5REQUIRES_VIOLATION, nondet_treeErr4REQUIRES_VIOLATION, nondet_treeErr3REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, tree_inorderErr4REQUIRES_VIOLATION, tree_inorderErr2REQUIRES_VIOLATION, tree_inorderErr3REQUIRES_VIOLATION, tree_inorderErr1REQUIRES_VIOLATION, tree_inorderErr6REQUIRES_VIOLATION, tree_inorderErr7REQUIRES_VIOLATION, tree_inorderErr5REQUIRES_VIOLATION, tree_inorderErr0REQUIRES_VIOLATION, tree_delErr18ASSERT_VIOLATIONMEMORY_FREE, tree_delErr20REQUIRES_VIOLATION, tree_delErr9REQUIRES_VIOLATION, tree_delErr0REQUIRES_VIOLATION, tree_delErr11REQUIRES_VIOLATION, tree_delErr21REQUIRES_VIOLATION, tree_delErr10REQUIRES_VIOLATION, tree_delErr8ASSERT_VIOLATIONMEMORY_FREE, tree_delErr23REQUIRES_VIOLATION, tree_delErr6ASSERT_VIOLATIONMEMORY_FREE, tree_delErr12REQUIRES_VIOLATION, tree_delErr1REQUIRES_VIOLATION, tree_delErr7ASSERT_VIOLATIONMEMORY_FREE, tree_delErr22REQUIRES_VIOLATION, tree_delErr3REQUIRES_VIOLATION, tree_delErr2REQUIRES_VIOLATION, tree_delErr13REQUIRES_VIOLATION, tree_delErr4REQUIRES_VIOLATION, tree_delErr15REQUIRES_VIOLATION, tree_delErr14REQUIRES_VIOLATION, tree_delErr16REQUIRES_VIOLATION, tree_delErr5REQUIRES_VIOLATION, tree_delErr19ASSERT_VIOLATIONMEMORY_FREE, tree_delErr17ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:27:23,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:27:23,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1372815063, now seen corresponding path program 1 times [2020-10-19 18:27:23,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:27:23,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369656048] [2020-10-19 18:27:23,990 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 18:27:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:24,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 18:27:24,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:27:24,232 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 18:27:24,233 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:24,235 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:24,235 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:27:24,235 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:27:24,345 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:24,346 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 18:27:24,351 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-19 18:27:24,353 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:27:24,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369656048] [2020-10-19 18:27:24,356 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-19 18:27:24,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1079935569] [2020-10-19 18:27:24,356 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 18:27:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:24,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-19 18:27:24,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:27:24,682 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 18:27:24,682 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:24,684 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:24,685 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:27:24,685 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:27:24,727 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:24,727 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 18:27:24,728 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:24,743 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-10-19 18:27:24,744 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 18:27:24,745 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2020-10-19 18:27:24,755 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 18:27:24,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:27:24,891 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 18:27:24,953 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 18:27:25,007 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 18:27:25,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:27:25,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2020-10-19 18:27:25,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373215274] [2020-10-19 18:27:25,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:27:25,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:27:25,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:27:25,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=29, Unknown=2, NotChecked=22, Total=72 [2020-10-19 18:27:25,010 INFO L87 Difference]: Start difference. First operand 257 states and 310 transitions. Second operand 8 states. [2020-10-19 18:27:25,083 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 18:27:25,088 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 18:27:25,126 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 18:27:25,145 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 18:28:06,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:28:06,399 INFO L93 Difference]: Finished difference Result 311 states and 383 transitions. [2020-10-19 18:28:06,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 18:28:06,400 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-10-19 18:28:06,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:28:06,403 INFO L225 Difference]: With dead ends: 311 [2020-10-19 18:28:06,403 INFO L226 Difference]: Without dead ends: 311 [2020-10-19 18:28:06,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 102 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=42, Invalid=64, Unknown=8, NotChecked=126, Total=240 [2020-10-19 18:28:06,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-19 18:28:06,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 295. [2020-10-19 18:28:06,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-10-19 18:28:06,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 367 transitions. [2020-10-19 18:28:06,439 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 367 transitions. Word has length 38 [2020-10-19 18:28:06,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:28:06,439 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 367 transitions. [2020-10-19 18:28:06,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:28:06,440 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 367 transitions. [2020-10-19 18:28:06,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 18:28:06,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:28:06,441 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 18:28:06,847 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 18:28:06,849 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, minErr1REQUIRES_VIOLATION, minErr0REQUIRES_VIOLATION, minErr5REQUIRES_VIOLATION, minErr4REQUIRES_VIOLATION, minErr3REQUIRES_VIOLATION, minErr2REQUIRES_VIOLATION, taskErr5REQUIRES_VIOLATION, taskErr7REQUIRES_VIOLATION, taskErr13ASSERT_VIOLATIONMEMORY_FREE, taskErr6REQUIRES_VIOLATION, taskErr8ASSERT_VIOLATIONMEMORY_FREE, taskErr9ASSERT_VIOLATIONMEMORY_FREE, taskErr10ASSERT_VIOLATIONMEMORY_FREE, taskErr0REQUIRES_VIOLATION, taskErr11ASSERT_VIOLATIONMEMORY_FREE, taskErr1REQUIRES_VIOLATION, taskErr3REQUIRES_VIOLATION, taskErr12ASSERT_VIOLATIONMEMORY_FREE, taskErr2REQUIRES_VIOLATION, taskErr4REQUIRES_VIOLATION, sizeErr0REQUIRES_VIOLATION, sizeErr1REQUIRES_VIOLATION, sizeErr2REQUIRES_VIOLATION, sizeErr3REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr5REQUIRES_VIOLATION, nondet_treeErr4REQUIRES_VIOLATION, nondet_treeErr3REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, tree_inorderErr4REQUIRES_VIOLATION, tree_inorderErr2REQUIRES_VIOLATION, tree_inorderErr3REQUIRES_VIOLATION, tree_inorderErr1REQUIRES_VIOLATION, tree_inorderErr6REQUIRES_VIOLATION, tree_inorderErr7REQUIRES_VIOLATION, tree_inorderErr5REQUIRES_VIOLATION, tree_inorderErr0REQUIRES_VIOLATION, tree_delErr18ASSERT_VIOLATIONMEMORY_FREE, tree_delErr20REQUIRES_VIOLATION, tree_delErr9REQUIRES_VIOLATION, tree_delErr0REQUIRES_VIOLATION, tree_delErr11REQUIRES_VIOLATION, tree_delErr21REQUIRES_VIOLATION, tree_delErr10REQUIRES_VIOLATION, tree_delErr8ASSERT_VIOLATIONMEMORY_FREE, tree_delErr23REQUIRES_VIOLATION, tree_delErr6ASSERT_VIOLATIONMEMORY_FREE, tree_delErr12REQUIRES_VIOLATION, tree_delErr1REQUIRES_VIOLATION, tree_delErr7ASSERT_VIOLATIONMEMORY_FREE, tree_delErr22REQUIRES_VIOLATION, tree_delErr3REQUIRES_VIOLATION, tree_delErr2REQUIRES_VIOLATION, tree_delErr13REQUIRES_VIOLATION, tree_delErr4REQUIRES_VIOLATION, tree_delErr15REQUIRES_VIOLATION, tree_delErr14REQUIRES_VIOLATION, tree_delErr16REQUIRES_VIOLATION, tree_delErr5REQUIRES_VIOLATION, tree_delErr19ASSERT_VIOLATIONMEMORY_FREE, tree_delErr17ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:28:06,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:28:06,852 INFO L82 PathProgramCache]: Analyzing trace with hash -613602979, now seen corresponding path program 1 times [2020-10-19 18:28:06,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:28:06,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628838070] [2020-10-19 18:28:06,853 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 18:28:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:28:06,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-19 18:28:06,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:28:06,997 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 18:28:06,998 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:28:07,005 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:28:07,009 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 18:28:07,009 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:28:07,016 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:28:07,017 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:28:07,017 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2020-10-19 18:28:07,135 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:28:07,136 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 18:28:07,138 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:28:07,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628838070] [2020-10-19 18:28:07,139 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-19 18:28:07,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1808544735] [2020-10-19 18:28:07,140 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 18:28:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:28:07,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-19 18:28:07,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:28:07,400 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 18:28:07,400 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:28:07,411 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:28:07,414 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 18:28:07,414 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:28:07,421 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:28:07,421 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:28:07,422 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2020-10-19 18:28:07,474 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:28:07,474 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 18:28:07,476 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:28:07,477 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-19 18:28:07,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011770422] [2020-10-19 18:28:07,477 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 18:28:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:28:07,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-19 18:28:07,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:28:07,594 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 18:28:07,594 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:28:07,600 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:28:07,601 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:28:07,601 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:28:07,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:28:07,667 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 18:28:07,668 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:28:07,686 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:28:07,699 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:28:07,700 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 18:28:07,701 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-19 18:28:07,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:28:07,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-19 18:28:07,702 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-19 18:28:07,702 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:28:08,322 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 18:28:08,337 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-19 18:28:08,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:28:08 BoogieIcfgContainer [2020-10-19 18:28:08,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:28:08,338 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:28:08,338 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:28:08,338 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:28:08,339 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 18:28:08,341 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:28:08,342 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:28:08,343 INFO L168 Benchmark]: Toolchain (without parser) took 57085.18 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 269.5 MB). Free memory was 958.6 MB in the beginning and 1.1 GB in the end (delta: -188.1 MB). Peak memory consumption was 81.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:28:08,343 INFO L168 Benchmark]: CDTParser took 0.26 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 18:28:08,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 576.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -164.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:28:08,344 INFO L168 Benchmark]: Boogie Preprocessor took 72.45 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: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:28:08,345 INFO L168 Benchmark]: RCFGBuilder took 1063.96 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: 58.9 MB). Peak memory consumption was 58.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:28:08,345 INFO L168 Benchmark]: TraceAbstraction took 55351.89 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 141.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -96.6 MB). Peak memory consumption was 45.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:28:08,346 INFO L168 Benchmark]: Witness Printer took 3.98 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:28:08,349 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 576.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -164.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 72.45 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: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1063.96 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: 58.9 MB). Peak memory consumption was 58.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 55351.89 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 141.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -96.6 MB). Peak memory consumption was 45.0 MB. Max. memory is 11.5 GB. * Witness Printer took 3.98 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 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: [L110] CALL nondet_tree() [L25] COND FALSE !(__VERIFIER_nondet_bool()) [L28] struct node *n = (struct node *)malloc(sizeof(struct node)); [L29] n->data = __VERIFIER_nondet_int() [L30] CALL, EXPR nondet_tree() [L25] COND FALSE !(__VERIFIER_nondet_bool()) [L28] struct node *n = (struct node *)malloc(sizeof(struct node)); [L29] n->data = __VERIFIER_nondet_int() [L30] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; [L30] RET, EXPR nondet_tree() [L30] n->left = nondet_tree() [L31] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; [L31] RET, EXPR nondet_tree() [L31] n->right = nondet_tree() [L32] return n; [L30] RET, EXPR nondet_tree() [L30] n->left = nondet_tree() - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 209 locations, 64 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 55.2s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 49.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1436 SDtfs, 650 SDslu, 3769 SDs, 0 SdLazy, 1476 SolverSat, 204 SolverUnsat, 20 SolverUnknown, 0 SolverNotchecked, 44.2s 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=295occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 61 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 222 ConstructedInterpolants, 33 QuantifiedInterpolants, 26834 SizeOfPredicates, 28 NumberOfNonLiveVariables, 779 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 65/86 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...