./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 096883e9 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -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 932f76685ed1816d93a388d0ab1addae9c51483a .................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -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 932f76685ed1816d93a388d0ab1addae9c51483a ................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-096883e [2020-12-01 23:36:46,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:36:46,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:36:47,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:36:47,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:36:47,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:36:47,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:36:47,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:36:47,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:36:47,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:36:47,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:36:47,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:36:47,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:36:47,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:36:47,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:36:47,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:36:47,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:36:47,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:36:47,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:36:47,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:36:47,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:36:47,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:36:47,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:36:47,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:36:47,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:36:47,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:36:47,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:36:47,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:36:47,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:36:47,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:36:47,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:36:47,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:36:47,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:36:47,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:36:47,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:36:47,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:36:47,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:36:47,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:36:47,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:36:47,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:36:47,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:36:47,072 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-12-01 23:36:47,120 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:36:47,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:36:47,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:36:47,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:36:47,122 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:36:47,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:36:47,123 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:36:47,123 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 23:36:47,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 23:36:47,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:36:47,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:36:47,124 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-01 23:36:47,124 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-01 23:36:47,125 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-01 23:36:47,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:36:47,125 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-01 23:36:47,125 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:36:47,126 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:36:47,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:36:47,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:36:47,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:36:47,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:36:47,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:36:47,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:36:47,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:36:47,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 23:36:47,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 23:36:47,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:36:47,128 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 932f76685ed1816d93a388d0ab1addae9c51483a [2020-12-01 23:36:47,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:36:47,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:36:47,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:36:47,528 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:36:47,529 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:36:47,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-12-01 23:36:47,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bff518419/f6dca2a36d5a4df3ad94502db535c662/FLAG931457e21 [2020-12-01 23:36:48,211 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:36:48,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-12-01 23:36:48,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bff518419/f6dca2a36d5a4df3ad94502db535c662/FLAG931457e21 [2020-12-01 23:36:48,610 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bff518419/f6dca2a36d5a4df3ad94502db535c662 [2020-12-01 23:36:48,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:36:48,621 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-01 23:36:48,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:36:48,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:36:48,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:36:48,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:36:48" (1/1) ... [2020-12-01 23:36:48,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47d2c67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:36:48, skipping insertion in model container [2020-12-01 23:36:48,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:36:48" (1/1) ... [2020-12-01 23:36:48,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:36:48,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:36:48,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:36:48,862 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) [2020-12-01 23:36:48,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6f0890cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:36:48, skipping insertion in model container [2020-12-01 23:36:48,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:36:48,864 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2020-12-01 23:36:48,867 INFO L168 Benchmark]: Toolchain (without parser) took 244.14 ms. Allocated memory is still 50.3 MB. Free memory was 27.4 MB in the beginning and 32.7 MB in the end (delta: -5.3 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-12-01 23:36:48,868 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 50.3 MB. Free memory is still 34.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:36:48,869 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.68 ms. Allocated memory is still 50.3 MB. Free memory was 27.1 MB in the beginning and 32.7 MB in the end (delta: -5.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-12-01 23:36:48,871 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 50.3 MB. Free memory is still 34.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 237.68 ms. Allocated memory is still 50.3 MB. Free memory was 27.1 MB in the beginning and 32.7 MB in the end (delta: -5.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 15]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-096883e [2020-12-01 23:36:51,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:36:51,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:36:51,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:36:51,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:36:51,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:36:51,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:36:51,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:36:51,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:36:51,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:36:51,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:36:51,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:36:51,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:36:51,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:36:51,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:36:51,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:36:51,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:36:51,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:36:51,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:36:51,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:36:51,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:36:51,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:36:51,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:36:51,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:36:51,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:36:51,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:36:51,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:36:51,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:36:51,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:36:51,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:36:51,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:36:51,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:36:51,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:36:51,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:36:51,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:36:51,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:36:51,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:36:51,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:36:51,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:36:51,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:36:51,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:36:51,142 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-12-01 23:36:51,193 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:36:51,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:36:51,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:36:51,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:36:51,196 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:36:51,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:36:51,196 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:36:51,196 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 23:36:51,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 23:36:51,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:36:51,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:36:51,198 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-01 23:36:51,198 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-01 23:36:51,198 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-01 23:36:51,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:36:51,199 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-01 23:36:51,199 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 23:36:51,199 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 23:36:51,199 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:36:51,200 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:36:51,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:36:51,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:36:51,201 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:36:51,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:36:51,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:36:51,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:36:51,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:36:51,202 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 23:36:51,202 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 23:36:51,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:36:51,203 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 23:36:51,203 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 932f76685ed1816d93a388d0ab1addae9c51483a [2020-12-01 23:36:51,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:36:51,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:36:51,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:36:51,653 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:36:51,653 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:36:51,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-12-01 23:36:51,731 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/485b66249/a45cb6e9a0374278a727b089b439d8b4/FLAGf90ca5512 [2020-12-01 23:36:52,424 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:36:52,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-12-01 23:36:52,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/485b66249/a45cb6e9a0374278a727b089b439d8b4/FLAGf90ca5512 [2020-12-01 23:36:52,453 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/485b66249/a45cb6e9a0374278a727b089b439d8b4 [2020-12-01 23:36:52,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:36:52,459 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-01 23:36:52,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:36:52,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:36:52,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:36:52,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:36:52" (1/1) ... [2020-12-01 23:36:52,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7483ef0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:36:52, skipping insertion in model container [2020-12-01 23:36:52,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:36:52" (1/1) ... [2020-12-01 23:36:52,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:36:52,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:36:52,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:36:52,665 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-12-01 23:36:52,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:36:52,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:36:52,682 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:36:52,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:36:52,721 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:36:52,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:36:52 WrapperNode [2020-12-01 23:36:52,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:36:52,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:36:52,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:36:52,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:36:52,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:36:52" (1/1) ... [2020-12-01 23:36:52,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:36:52" (1/1) ... [2020-12-01 23:36:52,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:36:52" (1/1) ... [2020-12-01 23:36:52,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:36:52" (1/1) ... [2020-12-01 23:36:52,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:36:52" (1/1) ... [2020-12-01 23:36:52,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:36:52" (1/1) ... [2020-12-01 23:36:52,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:36:52" (1/1) ... [2020-12-01 23:36:52,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:36:52,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:36:52,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:36:52,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:36:52,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:36:52" (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 [2020-12-01 23:36:52,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-12-01 23:36:52,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:36:52,871 INFO L138 BoogieDeclarations]: Found implementation of procedure areNatural [2020-12-01 23:36:52,871 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-12-01 23:36:52,871 INFO L130 BoogieDeclarations]: Found specification of procedure areNatural [2020-12-01 23:36:52,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-01 23:36:52,872 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-12-01 23:36:52,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:36:52,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 23:36:52,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 23:36:52,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-12-01 23:36:52,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:36:52,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-12-01 23:36:52,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-01 23:36:52,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-12-01 23:36:53,169 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:36:53,170 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-12-01 23:36:53,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:36:53 BoogieIcfgContainer [2020-12-01 23:36:53,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:36:53,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:36:53,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:36:53,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:36:53,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:36:52" (1/3) ... [2020-12-01 23:36:53,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798251c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:36:53, skipping insertion in model container [2020-12-01 23:36:53,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:36:52" (2/3) ... [2020-12-01 23:36:53,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798251c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:36:53, skipping insertion in model container [2020-12-01 23:36:53,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:36:53" (3/3) ... [2020-12-01 23:36:53,184 INFO L111 eAbstractionObserver]: Analyzing ICFG naturalNumbers1.c [2020-12-01 23:36:53,199 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:36:53,204 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-01 23:36:53,220 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-01 23:36:53,255 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:36:53,256 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-01 23:36:53,256 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:36:53,256 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:36:53,256 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:36:53,256 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:36:53,256 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:36:53,256 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:36:53,273 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-12-01 23:36:53,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 23:36:53,283 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:36:53,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:36:53,284 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-12-01 23:36:53,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:36:53,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1845664052, now seen corresponding path program 1 times [2020-12-01 23:36:53,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:36:53,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324370742] [2020-12-01 23:36:53,307 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 [2020-12-01 23:36:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:36:53,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 23:36:53,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:36:53,539 INFO L382 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 [2020-12-01 23:36:53,540 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 23:36:53,548 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 23:36:53,549 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 23:36:53,549 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-01 23:36:53,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:36:53,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:36:53,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:36:53,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324370742] [2020-12-01 23:36:53,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:36:53,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-12-01 23:36:53,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197528925] [2020-12-01 23:36:53,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 23:36:53,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:36:53,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 23:36:53,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 23:36:53,642 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-12-01 23:36:53,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:36:53,728 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-12-01 23:36:53,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 23:36:53,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-01 23:36:53,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:36:53,738 INFO L225 Difference]: With dead ends: 21 [2020-12-01 23:36:53,738 INFO L226 Difference]: Without dead ends: 18 [2020-12-01 23:36:53,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 23:36:53,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-01 23:36:53,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-01 23:36:53,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-01 23:36:53,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-12-01 23:36:53,774 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2020-12-01 23:36:53,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:36:53,774 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-12-01 23:36:53,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 23:36:53,774 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-12-01 23:36:53,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 23:36:53,775 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:36:53,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:36:53,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 23:36:53,989 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-12-01 23:36:53,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:36:53,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1845664051, now seen corresponding path program 1 times [2020-12-01 23:36:53,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:36:53,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556184076] [2020-12-01 23:36:53,992 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 [2020-12-01 23:36:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:36:54,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-01 23:36:54,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:36:54,084 INFO L382 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 [2020-12-01 23:36:54,085 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 23:36:54,091 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 23:36:54,093 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 23:36:54,093 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-01 23:36:54,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:36:54,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:36:54,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:36:54,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1556184076] [2020-12-01 23:36:54,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:36:54,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-12-01 23:36:54,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421860245] [2020-12-01 23:36:54,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 23:36:54,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:36:54,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 23:36:54,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-01 23:36:54,382 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 8 states. [2020-12-01 23:36:54,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:36:54,669 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-12-01 23:36:54,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 23:36:54,672 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2020-12-01 23:36:54,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:36:54,677 INFO L225 Difference]: With dead ends: 28 [2020-12-01 23:36:54,677 INFO L226 Difference]: Without dead ends: 28 [2020-12-01 23:36:54,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-01 23:36:54,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-01 23:36:54,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2020-12-01 23:36:54,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-01 23:36:54,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-12-01 23:36:54,688 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 10 [2020-12-01 23:36:54,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:36:54,689 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-12-01 23:36:54,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 23:36:54,690 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-12-01 23:36:54,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 23:36:54,691 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:36:54,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:36:54,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 23:36:54,907 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-12-01 23:36:54,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:36:54,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1907814666, now seen corresponding path program 1 times [2020-12-01 23:36:54,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:36:54,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359188773] [2020-12-01 23:36:54,911 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 [2020-12-01 23:36:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:36:54,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-01 23:36:54,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:36:55,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:36:55,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:36:55,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:36:55,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359188773] [2020-12-01 23:36:55,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:36:55,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2020-12-01 23:36:55,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529756034] [2020-12-01 23:36:55,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-01 23:36:55,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:36:55,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-01 23:36:55,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=78, Unknown=1, NotChecked=0, Total=110 [2020-12-01 23:36:55,498 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 11 states. [2020-12-01 23:36:55,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:36:55,753 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-12-01 23:36:55,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 23:36:55,755 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-12-01 23:36:55,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:36:55,755 INFO L225 Difference]: With dead ends: 25 [2020-12-01 23:36:55,756 INFO L226 Difference]: Without dead ends: 23 [2020-12-01 23:36:55,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=109, Unknown=1, NotChecked=0, Total=156 [2020-12-01 23:36:55,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-01 23:36:55,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-01 23:36:55,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-01 23:36:55,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-12-01 23:36:55,765 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2020-12-01 23:36:55,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:36:55,766 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-12-01 23:36:55,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-01 23:36:55,766 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-12-01 23:36:55,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 23:36:55,767 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:36:55,768 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:36:55,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-01 23:36:55,979 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-12-01 23:36:55,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:36:55,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1004346541, now seen corresponding path program 1 times [2020-12-01 23:36:55,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:36:55,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70170058] [2020-12-01 23:36:55,981 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 [2020-12-01 23:36:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:36:56,047 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:36:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:36:56,082 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:36:56,106 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-01 23:36:56,107 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:36:56,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-01 23:36:56,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:36:56 BoogieIcfgContainer [2020-12-01 23:36:56,340 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:36:56,341 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:36:56,341 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:36:56,341 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:36:56,341 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:36:53" (3/4) ... [2020-12-01 23:36:56,343 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 23:36:56,387 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-01 23:36:56,387 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:36:56,389 INFO L168 Benchmark]: Toolchain (without parser) took 3928.93 ms. Allocated memory was 46.1 MB in the beginning and 69.2 MB in the end (delta: 23.1 MB). Free memory was 23.0 MB in the beginning and 30.2 MB in the end (delta: -7.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-12-01 23:36:56,389 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 46.1 MB. Free memory was 25.6 MB in the beginning and 25.5 MB in the end (delta: 52.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:36:56,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.43 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.8 MB in the beginning and 32.1 MB in the end (delta: -9.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-12-01 23:36:56,391 INFO L168 Benchmark]: Boogie Preprocessor took 43.49 ms. Allocated memory is still 56.6 MB. Free memory was 32.1 MB in the beginning and 30.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:36:56,392 INFO L168 Benchmark]: RCFGBuilder took 404.59 ms. Allocated memory is still 56.6 MB. Free memory was 30.4 MB in the beginning and 32.3 MB in the end (delta: -1.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 23:36:56,393 INFO L168 Benchmark]: TraceAbstraction took 3164.35 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 31.8 MB in the beginning and 32.3 MB in the end (delta: -471.8 kB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2020-12-01 23:36:56,394 INFO L168 Benchmark]: Witness Printer took 46.61 ms. Allocated memory is still 69.2 MB. Free memory was 32.3 MB in the beginning and 30.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:36:56,398 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 46.1 MB. Free memory was 25.6 MB in the beginning and 25.5 MB in the end (delta: 52.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 261.43 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.8 MB in the beginning and 32.1 MB in the end (delta: -9.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.49 ms. Allocated memory is still 56.6 MB. Free memory was 32.1 MB in the beginning and 30.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 404.59 ms. Allocated memory is still 56.6 MB. Free memory was 30.4 MB in the beginning and 32.3 MB in the end (delta: -1.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3164.35 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 31.8 MB in the beginning and 32.3 MB in the end (delta: -471.8 kB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * Witness Printer took 46.61 ms. Allocated memory is still 69.2 MB. Free memory was 32.3 MB in the beginning and 30.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L13] char numbers[] = {0,1,2,3,4,5,6,7,8,9}; VAL [numbers={3:0}] [L15] CALL areNatural((int*) numbers) VAL [numbers={3:0}] [L2] int i = 0; VAL [i=0, numbers={3:0}, numbers={3:0}] [L3] COND TRUE i < 10 VAL [i=0, numbers={3:0}, numbers={3:0}] [L4] EXPR numbers[i] VAL [i=0, numbers={3:0}, numbers={3:0}, numbers[i]=50462976] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ VAL [i=1, numbers={3:0}, numbers={3:0}] [L3] COND TRUE i < 10 VAL [i=1, numbers={3:0}, numbers={3:0}] [L4] EXPR numbers[i] VAL [i=1, numbers={3:0}, numbers={3:0}, numbers[i]=117835012] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ VAL [i=2, numbers={3:0}, numbers={3:0}] [L3] COND TRUE i < 10 VAL [i=2, numbers={3:0}, numbers={3:0}] [L4] numbers[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.0s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 63 SDslu, 105 SDs, 0 SdLazy, 106 SolverSat, 12 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 64 ConstructedInterpolants, 6 QuantifiedInterpolants, 8444 SizeOfPredicates, 11 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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 proved your program to be incorrect! Received shutdown request...