./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/array02-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/array02-alloca-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58d4e5463d025a43f4c9f80bcbe28ceb46ed79b1 ............................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/array02-alloca-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58d4e5463d025a43f4c9f80bcbe28ceb46ed79b1 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 17:55:41,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 17:55:41,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 17:55:41,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 17:55:41,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 17:55:41,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 17:55:41,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 17:55:41,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 17:55:41,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 17:55:41,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 17:55:41,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 17:55:41,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 17:55:41,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 17:55:41,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 17:55:41,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 17:55:41,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 17:55:41,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 17:55:41,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 17:55:41,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 17:55:41,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 17:55:41,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 17:55:41,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 17:55:41,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 17:55:41,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 17:55:41,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 17:55:41,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 17:55:41,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 17:55:41,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 17:55:41,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 17:55:41,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 17:55:41,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 17:55:41,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 17:55:41,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 17:55:41,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 17:55:41,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 17:55:41,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 17:55:41,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 17:55:41,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 17:55:41,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 17:55:41,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 17:55:41,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 17:55:41,151 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 17:55:41,175 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 17:55:41,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 17:55:41,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 17:55:41,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 17:55:41,178 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 17:55:41,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 17:55:41,178 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 17:55:41,179 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 17:55:41,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 17:55:41,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 17:55:41,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 17:55:41,180 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 17:55:41,180 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 17:55:41,180 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 17:55:41,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 17:55:41,181 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 17:55:41,181 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 17:55:41,181 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 17:55:41,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 17:55:41,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 17:55:41,182 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 17:55:41,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 17:55:41,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 17:55:41,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 17:55:41,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 17:55:41,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 17:55:41,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 17:55:41,184 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 17:55:41,184 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58d4e5463d025a43f4c9f80bcbe28ceb46ed79b1 [2020-10-19 17:55:41,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 17:55:41,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 17:55:41,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 17:55:41,525 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 17:55:41,526 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 17:55:41,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/array02-alloca-2.i [2020-10-19 17:55:41,600 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dc68dc79/5aa6dd34c2704df78ffe4ccedcc0b7b4/FLAGc8c78145c [2020-10-19 17:55:42,118 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 17:55:42,119 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/array02-alloca-2.i [2020-10-19 17:55:42,141 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dc68dc79/5aa6dd34c2704df78ffe4ccedcc0b7b4/FLAGc8c78145c [2020-10-19 17:55:42,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dc68dc79/5aa6dd34c2704df78ffe4ccedcc0b7b4 [2020-10-19 17:55:42,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 17:55:42,422 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 17:55:42,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 17:55:42,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 17:55:42,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 17:55:42,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:55:42" (1/1) ... [2020-10-19 17:55:42,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c62682c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:42, skipping insertion in model container [2020-10-19 17:55:42,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:55:42" (1/1) ... [2020-10-19 17:55:42,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 17:55:42,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 17:55:42,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:55:42,880 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2020-10-19 17:55:42,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6ed3fb62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:42, skipping insertion in model container [2020-10-19 17:55:42,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 17:55:42,882 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2020-10-19 17:55:42,886 INFO L168 Benchmark]: Toolchain (without parser) took 468.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 955.9 MB in the beginning and 1.1 GB in the end (delta: -165.8 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2020-10-19 17:55:42,887 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 17:55:42,889 INFO L168 Benchmark]: CACSL2BoogieTranslator took 459.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -171.2 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2020-10-19 17:55:42,892 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 459.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -171.2 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 533]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-906a4fb [2020-10-19 17:55:44,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 17:55:44,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 17:55:44,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 17:55:44,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 17:55:44,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 17:55:44,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 17:55:44,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 17:55:44,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 17:55:44,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 17:55:44,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 17:55:44,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 17:55:44,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 17:55:44,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 17:55:44,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 17:55:44,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 17:55:44,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 17:55:44,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 17:55:44,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 17:55:44,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 17:55:44,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 17:55:44,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 17:55:44,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 17:55:44,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 17:55:44,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 17:55:44,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 17:55:44,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 17:55:44,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 17:55:44,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 17:55:44,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 17:55:44,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 17:55:44,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 17:55:44,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 17:55:44,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 17:55:44,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 17:55:44,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 17:55:44,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 17:55:44,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 17:55:44,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 17:55:44,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 17:55:44,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 17:55:44,771 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-19 17:55:44,796 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 17:55:44,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 17:55:44,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 17:55:44,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 17:55:44,799 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 17:55:44,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 17:55:44,800 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 17:55:44,800 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 17:55:44,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 17:55:44,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 17:55:44,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 17:55:44,801 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 17:55:44,802 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 17:55:44,802 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 17:55:44,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 17:55:44,802 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 17:55:44,803 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 17:55:44,803 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 17:55:44,803 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 17:55:44,804 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 17:55:44,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 17:55:44,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 17:55:44,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 17:55:44,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 17:55:44,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 17:55:44,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 17:55:44,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 17:55:44,806 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 17:55:44,806 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 17:55:44,807 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 17:55:44,807 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 17:55:44,807 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58d4e5463d025a43f4c9f80bcbe28ceb46ed79b1 [2020-10-19 17:55:45,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 17:55:45,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 17:55:45,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 17:55:45,214 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 17:55:45,215 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 17:55:45,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/array02-alloca-2.i [2020-10-19 17:55:45,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354e4c878/d1e3e022e875458383f00a09a2fe5144/FLAG36f585e9e [2020-10-19 17:55:45,817 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 17:55:45,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/array02-alloca-2.i [2020-10-19 17:55:45,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354e4c878/d1e3e022e875458383f00a09a2fe5144/FLAG36f585e9e [2020-10-19 17:55:46,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354e4c878/d1e3e022e875458383f00a09a2fe5144 [2020-10-19 17:55:46,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 17:55:46,141 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 17:55:46,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 17:55:46,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 17:55:46,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 17:55:46,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:55:46" (1/1) ... [2020-10-19 17:55:46,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@527959d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:46, skipping insertion in model container [2020-10-19 17:55:46,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:55:46" (1/1) ... [2020-10-19 17:55:46,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 17:55:46,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 17:55:46,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:55:46,645 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-10-19 17:55:46,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 17:55:46,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:55:46,690 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 17:55:46,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:55:46,813 INFO L208 MainTranslator]: Completed translation [2020-10-19 17:55:46,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:46 WrapperNode [2020-10-19 17:55:46,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 17:55:46,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 17:55:46,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 17:55:46,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 17:55:46,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:46" (1/1) ... [2020-10-19 17:55:46,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:46" (1/1) ... [2020-10-19 17:55:46,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:46" (1/1) ... [2020-10-19 17:55:46,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:46" (1/1) ... [2020-10-19 17:55:46,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:46" (1/1) ... [2020-10-19 17:55:46,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:46" (1/1) ... [2020-10-19 17:55:46,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:46" (1/1) ... [2020-10-19 17:55:46,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 17:55:46,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 17:55:46,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 17:55:46,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 17:55:46,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 17:55:46,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 17:55:46,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 17:55:46,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 17:55:46,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 17:55:46,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 17:55:46,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 17:55:46,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 17:55:46,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 17:55:46,963 INFO L138 BoogieDeclarations]: Found implementation of procedure test_fun [2020-10-19 17:55:46,963 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 17:55:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 17:55:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 17:55:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 17:55:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 17:55:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 17:55:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 17:55:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 17:55:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 17:55:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 17:55:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 17:55:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 17:55:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 17:55:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 17:55:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 17:55:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 17:55:46,967 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 17:55:46,967 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 17:55:46,967 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 17:55:46,967 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 17:55:46,967 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 17:55:46,968 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 17:55:46,968 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 17:55:46,968 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 17:55:46,968 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 17:55:46,968 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 17:55:46,969 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 17:55:46,969 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 17:55:46,969 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 17:55:46,969 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 17:55:46,969 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 17:55:46,970 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 17:55:46,970 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 17:55:46,970 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 17:55:46,970 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 17:55:46,970 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 17:55:46,971 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 17:55:46,971 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 17:55:46,971 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 17:55:46,971 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 17:55:46,972 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 17:55:46,972 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 17:55:46,972 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 17:55:46,972 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 17:55:46,972 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 17:55:46,973 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 17:55:46,973 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 17:55:46,973 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 17:55:46,973 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 17:55:46,974 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 17:55:46,974 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 17:55:46,974 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 17:55:46,974 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 17:55:46,974 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 17:55:46,975 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 17:55:46,975 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 17:55:46,975 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 17:55:46,975 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 17:55:46,975 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 17:55:46,976 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 17:55:46,976 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 17:55:46,976 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 17:55:46,976 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 17:55:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 17:55:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 17:55:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 17:55:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 17:55:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 17:55:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 17:55:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 17:55:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 17:55:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 17:55:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 17:55:46,979 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 17:55:46,979 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 17:55:46,979 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 17:55:46,979 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 17:55:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 17:55:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 17:55:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 17:55:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 17:55:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 17:55:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 17:55:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 17:55:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 17:55:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 17:55:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 17:55:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 17:55:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 17:55:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 17:55:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 17:55:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 17:55:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 17:55:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 17:55:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 17:55:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 17:55:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 17:55:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 17:55:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 17:55:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 17:55:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 17:55:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 17:55:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 17:55:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 17:55:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 17:55:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 17:55:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 17:55:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 17:55:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 17:55:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure test_fun [2020-10-19 17:55:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-19 17:55:46,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-19 17:55:46,987 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 17:55:46,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 17:55:46,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 17:55:46,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 17:55:46,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 17:55:46,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 17:55:47,761 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 17:55:47,762 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-19 17:55:47,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:55:47 BoogieIcfgContainer [2020-10-19 17:55:47,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 17:55:47,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 17:55:47,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 17:55:47,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 17:55:47,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 05:55:46" (1/3) ... [2020-10-19 17:55:47,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa25a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 05:55:47, skipping insertion in model container [2020-10-19 17:55:47,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:46" (2/3) ... [2020-10-19 17:55:47,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa25a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 05:55:47, skipping insertion in model container [2020-10-19 17:55:47,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:55:47" (3/3) ... [2020-10-19 17:55:47,773 INFO L111 eAbstractionObserver]: Analyzing ICFG array02-alloca-2.i [2020-10-19 17:55:47,785 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 17:55:47,794 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2020-10-19 17:55:47,805 INFO L253 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2020-10-19 17:55:47,823 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 17:55:47,823 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 17:55:47,823 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 17:55:47,824 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 17:55:47,824 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 17:55:47,824 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 17:55:47,825 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 17:55:47,825 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 17:55:47,841 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-10-19 17:55:47,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 17:55:47,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:47,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:55:47,853 INFO L429 AbstractCegarLoop]: === Iteration 1 === [test_funErr9REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr8REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr6REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr7REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr10REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr11REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:55:47,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:47,860 INFO L82 PathProgramCache]: Analyzing trace with hash 306652421, now seen corresponding path program 1 times [2020-10-19 17:55:47,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:55:47,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760016352] [2020-10-19 17:55:47,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-19 17:55:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:48,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 17:55:48,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:55:48,127 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 17:55:48,127 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:55:48,137 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:55:48,138 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:55:48,139 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-19 17:55:48,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:48,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:55:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:48,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760016352] [2020-10-19 17:55:48,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:55:48,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-19 17:55:48,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769202941] [2020-10-19 17:55:48,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 17:55:48,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:55:48,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 17:55:48,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:55:48,355 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 6 states. [2020-10-19 17:55:49,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:55:49,029 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2020-10-19 17:55:49,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 17:55:49,032 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-19 17:55:49,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:55:49,042 INFO L225 Difference]: With dead ends: 75 [2020-10-19 17:55:49,042 INFO L226 Difference]: Without dead ends: 70 [2020-10-19 17:55:49,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-19 17:55:49,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-19 17:55:49,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 51. [2020-10-19 17:55:49,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-19 17:55:49,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-10-19 17:55:49,087 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 10 [2020-10-19 17:55:49,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:55:49,088 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-10-19 17:55:49,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 17:55:49,088 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-10-19 17:55:49,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 17:55:49,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:49,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:55:49,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 17:55:49,300 INFO L429 AbstractCegarLoop]: === Iteration 2 === [test_funErr9REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr8REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr6REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr7REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr10REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr11REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:55:49,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:49,301 INFO L82 PathProgramCache]: Analyzing trace with hash 306652420, now seen corresponding path program 1 times [2020-10-19 17:55:49,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:55:49,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718483677] [2020-10-19 17:55:49,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-19 17:55:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:49,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 17:55:49,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:55:49,407 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 17:55:49,408 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:55:49,416 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:55:49,416 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:55:49,417 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 17:55:49,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:49,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:55:49,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:49,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718483677] [2020-10-19 17:55:49,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:55:49,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-19 17:55:49,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359658114] [2020-10-19 17:55:49,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 17:55:49,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:55:49,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 17:55:49,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 17:55:49,439 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 3 states. [2020-10-19 17:55:49,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:55:49,574 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2020-10-19 17:55:49,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 17:55:49,575 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-19 17:55:49,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:55:49,576 INFO L225 Difference]: With dead ends: 50 [2020-10-19 17:55:49,576 INFO L226 Difference]: Without dead ends: 50 [2020-10-19 17:55:49,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 17:55:49,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-19 17:55:49,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-19 17:55:49,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-19 17:55:49,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-10-19 17:55:49,585 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 10 [2020-10-19 17:55:49,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:55:49,585 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-10-19 17:55:49,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 17:55:49,586 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-10-19 17:55:49,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 17:55:49,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:49,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:55:49,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 17:55:49,799 INFO L429 AbstractCegarLoop]: === Iteration 3 === [test_funErr9REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr8REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr6REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr7REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr10REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr11REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:55:49,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:49,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1862352467, now seen corresponding path program 1 times [2020-10-19 17:55:49,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:55:49,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93696484] [2020-10-19 17:55:49,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-19 17:55:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:49,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 17:55:49,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:55:49,905 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 17:55:49,906 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:55:49,908 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:55:49,909 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:55:49,909 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 17:55:49,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:49,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:55:49,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:49,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93696484] [2020-10-19 17:55:49,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:55:49,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-19 17:55:49,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016728795] [2020-10-19 17:55:49,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 17:55:49,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:55:49,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 17:55:49,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:55:49,951 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 5 states. [2020-10-19 17:55:50,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:55:50,230 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2020-10-19 17:55:50,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 17:55:50,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-19 17:55:50,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:55:50,232 INFO L225 Difference]: With dead ends: 44 [2020-10-19 17:55:50,232 INFO L226 Difference]: Without dead ends: 44 [2020-10-19 17:55:50,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:55:50,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-19 17:55:50,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-19 17:55:50,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-19 17:55:50,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-10-19 17:55:50,239 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 13 [2020-10-19 17:55:50,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:55:50,240 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-10-19 17:55:50,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 17:55:50,240 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-10-19 17:55:50,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 17:55:50,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:50,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:55:50,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 17:55:50,452 INFO L429 AbstractCegarLoop]: === Iteration 4 === [test_funErr9REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr8REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr6REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr7REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr10REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr11REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:55:50,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:50,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1862352468, now seen corresponding path program 1 times [2020-10-19 17:55:50,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:55:50,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274582954] [2020-10-19 17:55:50,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-19 17:55:50,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:50,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-19 17:55:50,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:55:50,577 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-10-19 17:55:50,578 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:55:50,595 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:55:50,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274582954] [2020-10-19 17:55:50,598 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 17:55:50,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1218764454] [2020-10-19 17:55:50,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 17:55:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:50,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 17:55:50,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:55:50,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:50,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:55:50,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:50,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:55:50,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-19 17:55:50,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108052672] [2020-10-19 17:55:50,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 17:55:50,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:55:50,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 17:55:50,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:55:50,856 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 6 states. [2020-10-19 17:55:50,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:55:50,959 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-10-19 17:55:50,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 17:55:50,963 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-19 17:55:50,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:55:50,964 INFO L225 Difference]: With dead ends: 46 [2020-10-19 17:55:50,964 INFO L226 Difference]: Without dead ends: 46 [2020-10-19 17:55:50,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-19 17:55:50,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-19 17:55:50,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-10-19 17:55:50,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-19 17:55:50,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-19 17:55:50,974 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 13 [2020-10-19 17:55:50,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:55:50,974 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-19 17:55:50,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 17:55:50,975 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-19 17:55:50,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 17:55:50,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:50,979 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:55:51,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3,6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 17:55:51,392 INFO L429 AbstractCegarLoop]: === Iteration 5 === [test_funErr9REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr8REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr6REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr7REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr10REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr11REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:55:51,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:51,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1603406136, now seen corresponding path program 1 times [2020-10-19 17:55:51,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:55:51,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683949816] [2020-10-19 17:55:51,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-19 17:55:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:51,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 17:55:51,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:55:51,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:51,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:55:51,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:51,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683949816] [2020-10-19 17:55:51,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:55:51,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-10-19 17:55:51,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860783850] [2020-10-19 17:55:51,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 17:55:51,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:55:51,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 17:55:51,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:55:51,582 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 8 states. [2020-10-19 17:55:51,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:55:51,664 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2020-10-19 17:55:51,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 17:55:51,668 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-19 17:55:51,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:55:51,669 INFO L225 Difference]: With dead ends: 52 [2020-10-19 17:55:51,669 INFO L226 Difference]: Without dead ends: 52 [2020-10-19 17:55:51,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:55:51,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-19 17:55:51,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2020-10-19 17:55:51,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-19 17:55:51,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-19 17:55:51,676 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 14 [2020-10-19 17:55:51,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:55:51,677 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-19 17:55:51,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 17:55:51,677 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-19 17:55:51,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 17:55:51,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:51,678 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:55:51,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-19 17:55:51,882 INFO L429 AbstractCegarLoop]: === Iteration 6 === [test_funErr9REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr8REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr6REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr7REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr10REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr11REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:55:51,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:51,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1882214534, now seen corresponding path program 1 times [2020-10-19 17:55:51,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:55:51,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609851065] [2020-10-19 17:55:51,884 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 17:55:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:51,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 17:55:51,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:55:52,000 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-10-19 17:55:52,000 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:55:52,021 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:55:52,022 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:55:52,022 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:22 [2020-10-19 17:55:52,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:52,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:55:52,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:52,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609851065] [2020-10-19 17:55:52,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:55:52,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-19 17:55:52,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866243677] [2020-10-19 17:55:52,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 17:55:52,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:55:52,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 17:55:52,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-19 17:55:52,531 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 10 states. [2020-10-19 17:55:53,084 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-10-19 17:55:53,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:55:53,737 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2020-10-19 17:55:53,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 17:55:53,738 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-19 17:55:53,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:55:53,740 INFO L225 Difference]: With dead ends: 68 [2020-10-19 17:55:53,740 INFO L226 Difference]: Without dead ends: 68 [2020-10-19 17:55:53,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2020-10-19 17:55:53,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-19 17:55:53,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2020-10-19 17:55:53,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-19 17:55:53,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-10-19 17:55:53,746 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 14 [2020-10-19 17:55:53,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:55:53,747 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-10-19 17:55:53,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 17:55:53,747 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-10-19 17:55:53,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 17:55:53,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:53,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:55:53,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-19 17:55:53,950 INFO L429 AbstractCegarLoop]: === Iteration 7 === [test_funErr9REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr8REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr6REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr7REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr10REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr11REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:55:53,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:53,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1554578223, now seen corresponding path program 1 times [2020-10-19 17:55:53,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:55:53,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97291926] [2020-10-19 17:55:53,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-19 17:55:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:54,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 17:55:54,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:55:54,054 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 17:55:54,054 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:55:54,060 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:55:54,060 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:55:54,061 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 17:55:54,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:55:54,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:55:54,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:55:54,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97291926] [2020-10-19 17:55:54,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:55:54,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-19 17:55:54,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646186400] [2020-10-19 17:55:54,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 17:55:54,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:55:54,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 17:55:54,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-19 17:55:54,338 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 10 states. [2020-10-19 17:55:55,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:55:55,288 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2020-10-19 17:55:55,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 17:55:55,289 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-19 17:55:55,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:55:55,292 INFO L225 Difference]: With dead ends: 98 [2020-10-19 17:55:55,292 INFO L226 Difference]: Without dead ends: 98 [2020-10-19 17:55:55,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-19 17:55:55,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-19 17:55:55,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 57. [2020-10-19 17:55:55,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-19 17:55:55,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2020-10-19 17:55:55,299 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 17 [2020-10-19 17:55:55,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:55:55,299 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2020-10-19 17:55:55,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 17:55:55,300 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2020-10-19 17:55:55,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 17:55:55,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:55,300 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] [2020-10-19 17:55:55,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-19 17:55:55,505 INFO L429 AbstractCegarLoop]: === Iteration 8 === [test_funErr9REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr8REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr6REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr7REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr10REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr11REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:55:55,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:55,506 INFO L82 PathProgramCache]: Analyzing trace with hash -192954524, now seen corresponding path program 1 times [2020-10-19 17:55:55,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:55:55,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917068763] [2020-10-19 17:55:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-19 17:55:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:55,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 17:55:55,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:55:55,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917068763] [2020-10-19 17:55:55,612 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 17:55:55,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1176370926] [2020-10-19 17:55:55,612 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 17:55:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:55,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 17:55:55,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:55:55,814 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 17:55:55,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886134376] [2020-10-19 17:55:55,815 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 17:55:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:55,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 17:55:55,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:55:55,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:55:55,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:55:55,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:55:55,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:55:55,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-10-19 17:55:55,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091542423] [2020-10-19 17:55:55,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 17:55:55,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:55:55,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 17:55:55,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-19 17:55:55,995 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand 7 states. [2020-10-19 17:55:56,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:55:56,148 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2020-10-19 17:55:56,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 17:55:56,151 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-19 17:55:56,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:55:56,152 INFO L225 Difference]: With dead ends: 76 [2020-10-19 17:55:56,152 INFO L226 Difference]: Without dead ends: 74 [2020-10-19 17:55:56,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:55:56,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-19 17:55:56,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 57. [2020-10-19 17:55:56,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-19 17:55:56,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-10-19 17:55:56,159 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 20 [2020-10-19 17:55:56,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:55:56,159 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-10-19 17:55:56,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 17:55:56,160 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-10-19 17:55:56,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 17:55:56,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:56,161 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:55:56,774 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 17:55:56,774 INFO L429 AbstractCegarLoop]: === Iteration 9 === [test_funErr9REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr8REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr6REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr7REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr10REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr11REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:55:56,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:56,775 INFO L82 PathProgramCache]: Analyzing trace with hash -687390349, now seen corresponding path program 1 times [2020-10-19 17:55:56,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:55:56,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500730220] [2020-10-19 17:55:56,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-10-19 17:55:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:56,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 17:55:56,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:55:56,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:55:56,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:55:56,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:55:56,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500730220] [2020-10-19 17:55:56,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:55:56,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-10-19 17:55:56,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82451908] [2020-10-19 17:55:56,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 17:55:56,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:55:56,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 17:55:56,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-19 17:55:56,991 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 10 states. [2020-10-19 17:55:57,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:55:57,248 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2020-10-19 17:55:57,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 17:55:57,249 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-10-19 17:55:57,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:55:57,251 INFO L225 Difference]: With dead ends: 79 [2020-10-19 17:55:57,251 INFO L226 Difference]: Without dead ends: 79 [2020-10-19 17:55:57,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-19 17:55:57,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-19 17:55:57,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-10-19 17:55:57,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-19 17:55:57,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2020-10-19 17:55:57,258 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 23 [2020-10-19 17:55:57,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:55:57,259 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2020-10-19 17:55:57,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 17:55:57,259 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2020-10-19 17:55:57,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 17:55:57,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:57,261 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:55:57,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-10-19 17:55:57,462 INFO L429 AbstractCegarLoop]: === Iteration 10 === [test_funErr9REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr8REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr6REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr7REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr10REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr11REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:55:57,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:57,462 INFO L82 PathProgramCache]: Analyzing trace with hash 2019229045, now seen corresponding path program 1 times [2020-10-19 17:55:57,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:55:57,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933933839] [2020-10-19 17:55:57,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-10-19 17:55:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:57,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-19 17:55:57,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:55:57,616 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-10-19 17:55:57,617 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:55:57,641 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:55:57,642 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:55:57,642 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:19 [2020-10-19 17:55:57,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:55:57,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:55:58,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:55:58,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933933839] [2020-10-19 17:55:58,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:55:58,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-19 17:55:58,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576446810] [2020-10-19 17:55:58,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-19 17:55:58,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:55:58,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-19 17:55:58,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-10-19 17:55:58,563 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 14 states. [2020-10-19 17:55:59,683 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-10-19 17:55:59,921 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-10-19 17:56:00,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:56:00,446 INFO L93 Difference]: Finished difference Result 125 states and 143 transitions. [2020-10-19 17:56:00,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 17:56:00,449 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2020-10-19 17:56:00,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:56:00,450 INFO L225 Difference]: With dead ends: 125 [2020-10-19 17:56:00,450 INFO L226 Difference]: Without dead ends: 125 [2020-10-19 17:56:00,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2020-10-19 17:56:00,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-19 17:56:00,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 118. [2020-10-19 17:56:00,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-19 17:56:00,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2020-10-19 17:56:00,458 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 23 [2020-10-19 17:56:00,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:56:00,459 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2020-10-19 17:56:00,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-19 17:56:00,459 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2020-10-19 17:56:00,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 17:56:00,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:56:00,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:56:00,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-10-19 17:56:00,671 INFO L429 AbstractCegarLoop]: === Iteration 11 === [test_funErr9REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr8REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr6REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr7REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr10REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr11REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:56:00,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:56:00,672 INFO L82 PathProgramCache]: Analyzing trace with hash 357737120, now seen corresponding path program 1 times [2020-10-19 17:56:00,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:56:00,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100957084] [2020-10-19 17:56:00,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-10-19 17:56:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:56:00,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 17:56:00,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:56:00,784 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 17:56:00,784 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:56:00,786 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:56:00,787 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:56:00,787 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 17:56:00,842 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:56:00,844 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-10-19 17:56:00,845 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:56:00,860 INFO L625 ElimStorePlain]: treesize reduction 10, result has 60.0 percent of original size [2020-10-19 17:56:00,862 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:56:00,869 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 17:56:00,870 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:15 [2020-10-19 17:56:00,875 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:56:00,895 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:56:00,910 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:56:00,923 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:56:00,939 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:56:00,959 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:56:00,973 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:56:00,994 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:56:01,011 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:56:01,030 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:56:01,045 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:56:01,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 17:56:01,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:56:05,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 17:56:05,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100957084] [2020-10-19 17:56:05,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:56:05,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2020-10-19 17:56:05,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342778083] [2020-10-19 17:56:05,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 17:56:05,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:56:05,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 17:56:05,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=49, Unknown=2, NotChecked=0, Total=72 [2020-10-19 17:56:05,169 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 9 states. [2020-10-19 17:56:05,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:56:05,441 INFO L93 Difference]: Finished difference Result 117 states and 135 transitions. [2020-10-19 17:56:05,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 17:56:05,442 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-19 17:56:05,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:56:05,443 INFO L225 Difference]: With dead ends: 117 [2020-10-19 17:56:05,443 INFO L226 Difference]: Without dead ends: 88 [2020-10-19 17:56:05,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 11 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=34, Invalid=74, Unknown=2, NotChecked=0, Total=110 [2020-10-19 17:56:05,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-19 17:56:05,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-10-19 17:56:05,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-19 17:56:05,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2020-10-19 17:56:05,458 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 26 [2020-10-19 17:56:05,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:56:05,459 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2020-10-19 17:56:05,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 17:56:05,459 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2020-10-19 17:56:05,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 17:56:05,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:56:05,460 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:56:05,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-10-19 17:56:05,670 INFO L429 AbstractCegarLoop]: === Iteration 12 === [test_funErr9REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr8REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr6REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr7REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr10REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr11REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:56:05,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:56:05,670 INFO L82 PathProgramCache]: Analyzing trace with hash 149782479, now seen corresponding path program 2 times [2020-10-19 17:56:05,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:56:05,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712615298] [2020-10-19 17:56:05,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-10-19 17:56:05,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 17:56:05,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:56:05,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 17:56:05,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:56:05,777 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-10-19 17:56:05,777 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:56:05,803 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:56:05,804 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:56:05,804 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:22 [2020-10-19 17:56:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:56:06,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:56:07,196 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:56:07,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712615298] [2020-10-19 17:56:07,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:56:07,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-19 17:56:07,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685926862] [2020-10-19 17:56:07,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-19 17:56:07,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:56:07,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-19 17:56:07,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-10-19 17:56:07,199 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand 18 states. [2020-10-19 17:56:09,234 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-19 17:56:09,830 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-19 17:56:10,418 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-10-19 17:56:10,858 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-19 17:56:11,331 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-19 17:56:11,670 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-10-19 17:56:11,947 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-10-19 17:56:12,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:56:12,767 INFO L93 Difference]: Finished difference Result 120 states and 138 transitions. [2020-10-19 17:56:12,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-19 17:56:12,769 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 26 [2020-10-19 17:56:12,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:56:12,770 INFO L225 Difference]: With dead ends: 120 [2020-10-19 17:56:12,770 INFO L226 Difference]: Without dead ends: 120 [2020-10-19 17:56:12,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=311, Invalid=619, Unknown=0, NotChecked=0, Total=930 [2020-10-19 17:56:12,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-19 17:56:12,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 112. [2020-10-19 17:56:12,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-19 17:56:12,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 130 transitions. [2020-10-19 17:56:12,776 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 130 transitions. Word has length 26 [2020-10-19 17:56:12,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:56:12,776 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 130 transitions. [2020-10-19 17:56:12,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-19 17:56:12,777 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 130 transitions. [2020-10-19 17:56:12,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-19 17:56:12,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:56:12,778 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:56:12,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-10-19 17:56:12,983 INFO L429 AbstractCegarLoop]: === Iteration 13 === [test_funErr9REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr8REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr6REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr7REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr10REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr11REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:56:12,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:56:12,983 INFO L82 PathProgramCache]: Analyzing trace with hash -2067791423, now seen corresponding path program 2 times [2020-10-19 17:56:12,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:56:12,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239335715] [2020-10-19 17:56:12,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2020-10-19 17:56:13,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 17:56:13,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:56:13,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-19 17:56:13,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:56:13,129 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-10-19 17:56:13,129 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:56:13,148 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:56:13,149 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:56:13,149 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:22 [2020-10-19 17:56:13,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239335715] [2020-10-19 17:56:13,233 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 17:56:13,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1221704802] [2020-10-19 17:56:13,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 17:56:13,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 17:56:13,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:56:13,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 17:56:13,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:56:13,676 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-19 17:56:13,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:56:13,888 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-19 17:56:13,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:56:13,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2020-10-19 17:56:13,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698921864] [2020-10-19 17:56:13,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-19 17:56:13,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:56:13,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-19 17:56:13,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-10-19 17:56:13,891 INFO L87 Difference]: Start difference. First operand 112 states and 130 transitions. Second operand 15 states. [2020-10-19 17:56:14,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:56:14,358 INFO L93 Difference]: Finished difference Result 129 states and 148 transitions. [2020-10-19 17:56:14,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 17:56:14,359 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-10-19 17:56:14,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:56:14,360 INFO L225 Difference]: With dead ends: 129 [2020-10-19 17:56:14,361 INFO L226 Difference]: Without dead ends: 112 [2020-10-19 17:56:14,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2020-10-19 17:56:14,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-19 17:56:14,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-10-19 17:56:14,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-19 17:56:14,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 129 transitions. [2020-10-19 17:56:14,365 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 129 transitions. Word has length 41 [2020-10-19 17:56:14,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:56:14,366 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 129 transitions. [2020-10-19 17:56:14,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-19 17:56:14,366 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 129 transitions. [2020-10-19 17:56:14,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-19 17:56:14,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:56:14,368 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:56:14,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3,18 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 17:56:14,775 INFO L429 AbstractCegarLoop]: === Iteration 14 === [test_funErr9REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr8REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr6REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr7REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr10REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr11REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 17:56:14,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:56:14,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1760549218, now seen corresponding path program 3 times [2020-10-19 17:56:14,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:56:14,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498553120] [2020-10-19 17:56:14,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2020-10-19 17:56:14,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-19 17:56:14,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:56:14,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-19 17:56:14,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:56:14,977 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-10-19 17:56:14,978 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:56:14,994 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:56:14,994 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:56:14,995 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:22 [2020-10-19 17:56:15,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498553120] [2020-10-19 17:56:15,198 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 17:56:15,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1141215552] [2020-10-19 17:56:15,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 20 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 17:56:15,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-19 17:56:15,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:56:15,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-19 17:56:15,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:56:15,673 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-10-19 17:56:15,673 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:56:15,692 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:56:15,693 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:56:15,693 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:22 [2020-10-19 17:56:15,751 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 17:56:15,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393445787] [2020-10-19 17:56:15,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:56:15,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-19 17:56:15,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:56:15,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-19 17:56:15,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:56:15,912 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-10-19 17:56:15,913 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:56:15,929 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:56:15,930 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:56:15,930 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:22 [2020-10-19 17:56:15,998 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 17:56:15,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:56:15,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-19 17:56:15,999 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-19 17:56:15,999 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 17:56:16,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3,21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 17:56:16,620 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-19 17:56:16,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 05:56:16 BoogieIcfgContainer [2020-10-19 17:56:16,620 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 17:56:16,621 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 17:56:16,621 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 17:56:16,621 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 17:56:16,621 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:55:47" (3/4) ... [2020-10-19 17:56:16,624 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 17:56:16,624 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 17:56:16,626 INFO L168 Benchmark]: Toolchain (without parser) took 30490.97 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 317.7 MB). Free memory was 961.3 MB in the beginning and 1.1 GB in the end (delta: -177.2 MB). Peak memory consumption was 140.5 MB. Max. memory is 11.5 GB. [2020-10-19 17:56:16,626 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 17:56:16,627 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 955.9 MB in the beginning and 1.1 GB in the end (delta: -145.8 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. [2020-10-19 17:56:16,627 INFO L168 Benchmark]: Boogie Preprocessor took 64.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 17:56:16,628 INFO L168 Benchmark]: RCFGBuilder took 882.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 11.5 GB. [2020-10-19 17:56:16,629 INFO L168 Benchmark]: TraceAbstraction took 28855.46 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 184.0 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -90.1 MB). Peak memory consumption was 94.0 MB. Max. memory is 11.5 GB. [2020-10-19 17:56:16,629 INFO L168 Benchmark]: Witness Printer took 3.82 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 17:56:16,631 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 673.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 955.9 MB in the beginning and 1.1 GB in the end (delta: -145.8 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 64.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 882.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 28855.46 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 184.0 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -90.1 MB). Peak memory consumption was 94.0 MB. Max. memory is 11.5 GB. * Witness Printer took 3.82 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: 518]: 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: [L529] int array_size = __VERIFIER_nondet_int(); [L530] COND FALSE !(array_size < 1 || array_size >= 2147483647 / sizeof(int)) [L533] int* numbers = (int*) __builtin_alloca (array_size * sizeof(int)); [L535] int k = 0; [L535] COND TRUE k < array_size [L537] numbers[k] = __VERIFIER_nondet_int() [L535] k++ [L535] COND TRUE k < array_size [L537] numbers[k] = __VERIFIER_nondet_int() [L535] k++ [L535] COND FALSE !(k < array_size) [L540] CALL test_fun(numbers, array_size) [L514] int i; [L515] int pos = 0; [L516] int neg = 0; [L517] i = 0 [L517] COND TRUE i < N [L518] EXPR a[i] [L518] COND FALSE !(a[i] < 0) [L522] EXPR a[i] [L522] COND FALSE !(a[i] > 0) [L517] i++ [L517] COND TRUE i < N [L518] EXPR a[i] [L518] COND FALSE !(a[i] < 0) [L522] EXPR a[i] [L522] COND FALSE !(a[i] > 0) [L517] i++ [L517] COND TRUE i < N [L518] EXPR a[i] [L518] COND FALSE !(a[i] < 0) [L522] EXPR a[i] [L522] COND FALSE !(a[i] > 0) [L517] i++ [L517] COND TRUE i < N [L518] EXPR a[i] [L518] COND FALSE !(a[i] < 0) [L522] EXPR a[i] [L522] COND FALSE !(a[i] > 0) [L517] i++ [L517] COND TRUE i < N [L518] a[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 71 locations, 15 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 28.7s, OverallIterations: 14, TraceHistogramMax: 5, AutomataDifference: 12.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 435 SDtfs, 959 SDslu, 1451 SDs, 0 SdLazy, 1207 SolverSat, 154 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 579 GetRequests, 425 SyntacticMatches, 11 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 14.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred in iteration=10, 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, 13 MinimizatonAttempts, 111 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 250 NumberOfCodeBlocks, 250 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 474 ConstructedInterpolants, 16 QuantifiedInterpolants, 87192 SizeOfPredicates, 48 NumberOfNonLiveVariables, 803 ConjunctsInSsa, 102 ConjunctsInUnsatCore, 26 InterpolantComputations, 14 PerfectInterpolantSequences, 102/182 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...